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PreSonus StudioLive 312AI

1. Center or mono systems can provide a simple economical solution for venues where speech intelligibility is the priority rather than music As with a stereo system make sure the coverage pattern of the speaker focuses the energy on the audience This graphic actually shows two speakers The upper speaker is for throwing to the back of the room and the lower speaker covers the space in the front of the room closest to the stage 27 4 System Configuration StudioLive Al Series Loudspeaker 4 2 Delay Systems Owner s Manual 4 2 7 LCR Systems An LCR system is a stereo system with a center speaker added This configuration allows panning and adds depth to the acoustic image This type of system will provide more control than a basic stereo system and is ideal in situations where music and speech intelligibility are equally important 4 2 8 Monitor Systems SL312Al A Mix 2 SL315AlI ato
2. Out 17 24 Out 9 16 8 Em G82 A AE vi Pre Insert Balanced Direct Outputs AN al H Z A zum E y y y y y 1868 18d zl e 18d zl e 18d e 18d e sa ap oe Es Z o em 24d8 Ze zx Sie Aa op Pi k MIXOUT EON MIX OUT EN MIX OUT MIX OUT StudioLive 312Al monitors 3 8 Typical Corporate Conference Setup Diagram FOH StudioLive 328Al speakers StudioLive 328AI delay speakers ojo O CA K O AUDIO 1 0 AUDIO 1 0 AUDIO 1 0 D AUDIO 1 0 y AUDIO 1 0 AUDIO 1 0 Mic Mic ic ine In ine In ine In Line In Line In ine In E StudioLive 312Al speakers 14 13 12 11 10 9 8 7 6 5 4 3 2 1 gggsgese8esese AUDIO 1 0 AUDIO 1 0 E 3 se nea Z ES ee CA SAS EE EA 200 1100 LG neen inser Insert Insert neen ns jns nser In Out A 1 f L 2 L Oe asta OY 4 2 6 4 H R R Right O O 48V e a i 9 P Level Level Talkback Mic Mono Output Mai put Main Out Tape CR Output AUX Inputs Subgroup Outputs di PreSonus Atom STUDIOLIVE 16 4 2 90 240 VAC 50 60 Hz Power E S PDIF 580 800 bf A a Control Output Z E Out 9 16 Out 1 8 Pre Insert Balanced Direct Outputs Wiot j 19 4 System Configuration StudioLive Al Series Loudspeaker 4 1 Recognizing Problem
3. White power on remote mode 3 Hookup StudioLive Al Series Loudspeaker 3 5 Basic Hookup Diagram Owner s Manual 3 5 Basic Hookup Diagram StudioLive 312Al speakers microphone AUDIO 1 0 Y M AUDIO 1 0 MIDI In Out 3 6 Typical Band Setup Diagram StudioLive 328Al speakers StudioLive 312Al monitors ojo AUDIO 1 0 AUDIO 1 0 LINI LINI SPEAKER MIC E 2e mw 9 Ey FE ap oda BD MIX OUT MIC 1248 RI y Insert nse INTEGRATION STUDIOLIVE KC N Power o 0 a o EI utput Pre Insert Balanced Direct Outputs N y L __ 18 3 Hookup StudioLive Al Series Loudspeaker 3 7 Typical Venue Setup Diagram Owner s Manual 3 7 Typical Venue Setup Diagram StudioLive 315Al speakers StudioLive 18sAl subs Studio ve 328Al speakers A ja Ka OO AUDIO 1 0 D AUDIO 1 0 SI AUDIO 1 0 AUDIO UO TA Mic KO r ine In ine In ine In G A V l ight 2 Di M o e 4 pose Talkback Mic lono Ou Me out Main Out Tape CR Outputs AUX Inputs Subgroup Outputs Aux Outputs AS AS Is PreSonus STUDIOLIVE A A Y El a Lal e
4. p g SL18sAl Mix 5 Above is a typical stage monitor layout for a five piece band For musicians such as a vocalist who don t require a lot of low frequency energy in their floor wedge we suggest using a 312Al For musicians that need a little more bass the 328Al is preferable The drum monitor in this example is a full range 4 way system a 315Al atop an 18sAl This can be configured with or without the highpass filter engaged on the 315Al depending on how much 100 Hz overlap the drummer prefers For smaller stages a 315Al atop a low tripod or in the horizontal floor wedge position will be more than adequate 28 4 System Configuration StudioLive Al Series Loudspeaker 4 3 Rigging and Safety Owner s Manual 4 3 Rigging and Safety This section has been created as a reference for safe rigging and mounting practices It is not an installation tutorial PreSonus StudioLive Al Series loudspeakers are professional products and are not intended for consumer use Installation of PreSonus StudioLive Al loudspeakers should only be undertaken by a qualified systems integrator or a professional rigger Every audio project is unique and a licensed and insured professional should be consulted to guarantee the safety and performance of the installed system The installer must have a complete understanding of the design intent as well as knowledge of safe installation techniques to create a successful project Understanding safe rigging an
5. Al Series Loudspeaker 3 2 Onboard Performance Monitoring Owner s Manual Manuana Alignment Adds delay time to the subwoofer Press the recessed button under the Alignment LEDs to step through the three settings OM Select this setting when the full range system is directly over the subwoofer No delay is added to the subwoofer amplifier output 1M Select this setting when the subwoofer is about one meter from the full range loudspeaker a typical distance when the loudspeaker is on an adjacent tripod stand A delay of about 2 9 ms is introduced to the signal that is output through the subwoofer amplifier 2M Select this setting when the subwoofer is about two meters from the full range loudspeaker typical when the full range system is on the stage and the subwoofer is on the floor A delay of about 5 9 ms is introduced to the signal that is output through the subwoofer amplifier Power User Tip The Alignment delay setting compensates for the cancellation or reinforcement of low frequencies when the same frequencies are reproduced by two sound sources that are set some distance apart Low frequencies in the crossover region between full range and subwoofer have wavelengths that are several feet long the wavelength of a 150 Hz wave is about 7 5 ft and reinforcement and cancellation will occur as the waves interact in the room The Alignment delay provides compensation for this effect when the loudspeaker is about the same distanc
6. 600 NRG0181 SLS312Al Grill 600 NRGO182 SLS315Al Grill 600 NRGO176 SLS328Al Grill 600 NRG0183 SLS18sAl Grille 600 NRG0153 Handle 600 NRG0153 Handle 600 NRG0153 Handle 600 NRG0153 Handle Assembly Assembly Assembly Assembly 600 NRG0205 Sliding Foot Bracket 34 INO XIW Owner s Manual LOIS NOILdO AHd Spy OOL OL StudioLive Al Series Loudspeaker 7 DDOD 0D o 0 CO CO 00 0 05 aINW Aejaq nd1ng Huidnosy Jayeads Dj2Uaueied pueq 8 yJ2ol9 6ulssa2o4d dSg 19487 1 SN Jazijenby leeudl nInW dsd lulod bpulleolj ZHA 96 10 Y7 5 5 2 52 52l Y mmm mmm mmm mmm mmm mmm el 2 g Zen O JOWUOW JOO 2S on vo S a Ez A y a OY anesan DEK so Se 2 y Ms x U gt O zo A g U E E E dan aJl S o OU ef Sn e 5 19A0SSOJ JUBWUHI Y DUDU JOUIGe w03 240dUul3 LUN D Ny O 1YNDIS ow ale ou n o 120 39 Hbulssad01g der 8u41a3u U A gt N gt E un UN LL M LAdNI 3NI CH 35 NOILdO oS D S a 1NO XIW pr 32 SS A 1075 NOILdO 2 AHd l e 2 GN CET OOL OL CH LAdNI ANI m PAPA i 40 48 A AS Jezllenb3 wun leeuUdl nInW 0105 aN Aejaq lndln0 puldnolDp leeads Dgj2Waueied pueq 8 120 9 Bulssaxd0i1g dSg Je easn mn mm pn zen pn pn pn mn rn JOJUON JOO1 OQ oO a241NOS Yg dl
7. Attach the two front points first and then adjust tilt angle to ensure the load is safely suspended during installation If additional pan or height adjustment is needed make sure to follow this rule as well Do not suspend any other items from PreSonus StudioLive Al loudspeakers SUPPORTED Two front rigging points plus a pull back NOT SUPPORTED One StudioLive Loudspeaker attached to another PreSonus offers an M10 Kit that includes four 4 forged shoulder steel M10 eyebolts This kit is to be used with the 312Al 315Al and 328Al M10 suspension points These bolts are specifically designed for safe suspension of PreSonus StudioLive Al loudspeakers and must not be substituted These eyebolts are not a common hardware store item Please read all included information A minimum of three 3 eyebolts per cabinet must be used for safe suspension When using the M10 Al Kit please remember that the eyebolt strength rating will vary with the pull angle It is extremely important to observe appropriate pull angles when suspending any loudspeaker with eyebolts Suspending an object with eyebolt should always be done in a way that ensures the resultant forces are within the allowed pull angles Do not use at 45 or less 31 A System Configuration StudioLive Al Series Loudspeaker 4 3 Rigging and Safety Owner s Manual 4 3 4 Precautions StudioLive Al series loudspeakers like all electrical devices must be protected from liquids or excess
8. NETWORK CONNECTED ACTIVITY SETUP lt WIFI gt Ethercon Your StudioLive Al series loudspeaker ships with a control option card installed This option card houses an Ethercon connection to hardwire your speaker to a wireless router for use with SL Room Control A standard RJ45 connector may be used but we recommend the protection provided by using the mating male Ethercon connector For more information on creating a wired LAN network see the SL Room Control Reference Manual USB Connection and Wi Fi Module Your StudioLive Al series loudspeaker features a USB connection for use with the included USB Wi Fi module This will allow you to wirelessly connect to a wireless network and remote control your StudioLive speaker For more information on connecting your StudioLive Al series loudspeaker to an established wireless network see the SL Room Control Reference Manual Power User Tip While wireless networking is ideal for most mobile applications it is highly recommended that a wired LAN network be employed for permanently installed systems or for large venues The USB connection can also be used for firmware updates when no network is available and for resetting your loudspeaker to its factory default state For more information see the SL Room Control Reference Manual Network Status and Controls These LEDs and controls provide information about network connectivity and allow you to configure your included wireless LAN
9. Rooms Owner s Manual 4 System Configuration StudioLive Al series full range loudspeakers are designed to reproduce an input signal with extreme fidelity maintaining near flat frequency and phase response at all levels up to the threshold of clipping However the performance of any loudspeaker will be influenced by the acoustics of the space in which they operate Difficult room acoustics combined with improper loudspeaker placement can interfere with achieving the fidelity of which your StudioLive Al series loudspeakers are capable To help you get the most out of your system this section has been included to guide you around some of the pitfalls when configuring a PA system 4 1 Recognizing Problem Rooms In most live environments the room is rarely designed to maximize the listening experience More often then not money is spent on aesthetic appeal rather than acoustic treatment For large scale tour productions venues are often sports arenas that have been designed to maximize crowd noise Smaller music venues are often chosen for location or architectural aesthetics rather than music reproduction While an empty warehouse or old wine cellar might make a great environment to hang out in it s necessary to recognize and correct what that space does to the sound system in order to optimize the PA s performance in the venue In general the following physical features of a room can affect a sound system s performance e Room s
10. causing cancellation and reinforcement If they re 180 degrees out of phase with respect to each other they will cancel each other out If you are using your loudspeakers in a reverberant environment position them so that as much sound as possible is focused on the audience area and steered away from reflective surfaces StudioLive Al series full range loudspeakers have a nominal 90 degree horizontal and 60 degree vertical coverage pattern When you do your placement and positioning it s a good idea take some time to do a walk around of your loudspeakers playing either pink noise or program material so you get a feel for how the sounds are translating into the room 4 2 Delay Systems In most situations a PA system relies on two main speaker systems positioned at the front of the room to reproduce audio for the entire performance space As a result the level of the system is considerably louder at the front line then it is at mix position With a point source horn loaded loudspeaker such as a single powered loudspeaker sound intensity is lost at a rate of 6 dB per doubling of distance This is true regardless of tuning amplification power rating or any other speaker specifications So if your signal level is 106 dB SPL at 1 foot at 8 feet away it s down by 18 dB Here s a simple chart that illustrates the math In situations where sound must be reproduced outside of the main system s optimum range well placed dela
11. handling high and mid frequency content for part of the space As a speaker is pushed harder the edges of its frequency response begin to distort so by easing the demands on the mains delay systems increase fidelity sonically as well as mechanically This also means that the front row doesn t need to be blasted just so the people at the back can hear the show The goal of distributed sound is to extend the intelligible range of the system without killing the front of the crowd with excessive level As noted earlier sound travels much slower than electricity so the audio coming out of the delay system will arrive to the listeners before the audio coming out of the main system Without proper alignment the multiple arrival times create confusion to the listener and sonic definition is lost Speech and beat transients become less intelligible In large venues this can actually create a flam or echo effect By delaying the audio going to side and rear fills you can create a cohesive listening environment for the entire audience It should be noted that frequencies in the sub bass range of a delay system do not require distribution In fact a delay system s highpass filter should be rolled up as high as 300 to 400 Hz to avoid sound going back toward the stage as low frequencies become omnidirectional When placing delay systems the main goal is to maintain intelligibility of the PA especially in the vocal consonant range 2 to 4 kHz Howeve
12. o0 o0 00000 Ch 9 Turn the Speaker level knob on your full range loudspeakers to the 12 o clock position y el See L OFF aa 2448 B DON E 10 Turn the Sub level knob on your 18sAl to the 12 o clock position This is unity gain As PreSonus STUDIOLIVE 18s 10 2 Getting Started StudioLive Al Series Loudspeaker 2 2 Level Setting Procedure 18sAl Owner s Manual SIGNAL LIMIT CLIP THERMAL SLPS O 050 0 0 0 0 0 0 0 0 09 POS RO Y 0000000000 As PreSonus STUDIOLIVE 18s 11 14 Turn the Line level knob on your full range loudspeakers to the fully clockwise position The line level inputs should be set so that the green Signal LED is illuminated most of the time but the red Clip LED illuminates only with the highest transient peaks or not at all If your line level source is clipping the inputs on your 18sAl you will need to turn down the source s output level If more high frequency output level is required turn the Speaker level knob clockwise on your full range loudspeakers In most cases the level should be set the same on both loudspeakers Adjust the Sub level control on your 18sAl to balance the low frequency content level to taste The full range loudspeakers offer a highpass filter centered at 100 Hz With or without this filter e
13. repeatedly to step through the three contours User Layer The User Layer accesses DSP settings that you create using SL Room Control software This layer contains custom EQ High Pass Filter Delay and Group settings Parameter adjustments in SL Room Control are automatically stored in the DSP memory in real time You can also create and load user presets from SL Room Control For more information on SL Room Control see the SL Room Control Reference Manual Press and hold the recessed button below the User LED to turn the User Layer on or off This will apply the User Layer parameters on top of the currently selected DSP contour when you are not connected to SL Room Control 100 Hz High Pass Filter This option engages a highpass filter that removes frequency content below 100 Hz Engaging the highpass filter will also adjust phase and time alignment settings Because of this your loudspeaker will mute momentarily while these new internal settings are being applied While these settings are optimized for use with the StudioLive 18sAl you can use this mode with any subwoofer to remove unwanted low frequency content Power User Tip The three full range loudspeakers are phase and time aligned to form a true 4 way system when paired with an 18sAl subwoofer with or without the 100 Hz High Pass Filter engaged With most 4 way systems leaving frequency content below 100 Hz in the full range loudspeaker can introduce destructive cancellations with t
14. the speaker is blocked by a hard surface and forced to radiate in a crescent shape Depending on the proximity and position there may be a boost in low frequency energy Testing your speaker placement and doing some critical listening tests will 26 4 System Configuration StudioLive Al Series Loudspeaker 4 2 Delay Systems 4 2 5 Stereo System Owner s Manual help determine the best final location for your loudspeaker system If your speakers are sitting on the floor you can expect a certain amount of half space loading If you are using your speakers as floor wedges you might want to experiment with using the High Pass Filter to reduce low energy In some cases this might improve intelligibility Using the Floor Monitor DSP contour will also help you get the best use out of your StudioLive Al loudspeakers in this position A stereo system allows panning and adds depth to the acoustic image This is good for speech reinforcement and greatly enhances live or pre recorded music Locate speakers to give the best horizontal coverage Ensure that the listeners are well covered by the pattern 4 2 6 Mono Cluster with Down Fill
15. 315Al 328Al e 8notch filters 312Al 315Al 328Al e Limiter e Speaker delay up to 500 ms e DSP input level e EQ preset browser e Custom labels and comments field for each speaker e Preset save and load e Create and store User Operation mode onboard each speaker for use away from SL Room Control Note Complete information about SL Room Control can be found in the SL Room Control Reference Manual 1 Overview StudioLive Al Series Loudspeaker 1 4 What is in the Box Owner s Manual 1 4 Whatis in the Box In addition to this manual your StudioLive package contains the following e The loudspeaker product e Locking IEC power cable e USB Wireless LAN Adapter e SLRoom Control download instructions e PreSonus Health Safety and Compliance Guide 2 Getting Started StudioLive Al Series Loudspeaker 2 1 Level Setting Procedure Full Range Owner s Manual 2 Getting Started Before you begin here are a few general rules of thumb Always make sure your loudspeakers are powered off when making connections Do not allow your inputs to clip Watch the Clip LED on the back of your loudspeaker When this LED illuminates it indicates that the analog to digital converters are in danger of being overdriven Overdriving the converters will cause digital distortion which sounds terrible Your full range loudspeaker provides attenuation control only for the speaker and line levels If you are not getting adequate v
16. Jayng lndul DAY O JELUION LE ES S 19A0SSO4 JU3MUBI y DUIUDL JOUIGe 03 e10du3 LUN D ny I 031 dat dl TVNDIS 4130 9 6ulssa2o4d de ISuASuu Technical Information System Block Diagrams 312 315Al dS lulod puleoljJ ZHA 96 3 9 7Z 5 5 2 36 Owner s Manual StudioLive Al Series Loudspeaker Technical Information System Block Diagrams 5 5 2 LOIS NOILdO pued 1e9y Sasejd paxiy St OOL OL NOILdO hh Kejaq ywn 1891Y1 2 NIN 101JUO WOOY 15 alqeueA 0log enWN Aeladlndljn0 buldnolD sayeads 420 g Bulssad01g EE de 194e7 1 SN PTO 081 3ulod fe 0 j pul Es N D a 1ND eold IO euuoN HDIH D L LNdNI ZH 96 Smels J AOSSO1 JUBUUHIY urun J9UIQE a aera 11q Z yJ2olg Pulssa2o4d T O DO Day Ges o an an Uwe dsd 24131u y a1 IWNDIS wins OUOW A 4 gt aql OUOu L LAdLNO 5 2 2 18sAl Subwoofer 37 5 Technical Information StudioLive Al Series Loudspeaker 5 3 Mechanical Drawings Owner s Manual 5 3 Mechanical Drawings 5 3 1 StudioLive 312Al 5 3 2 StudioLive 315Al 38 5 Technical Information StudioLive Al Series Loudspeaker 5 3 Mechanical Drawings Owner s Manual 5 3 3 StudioLive 328Al 5 3 4 StudioLive 18sAl 23 858 mm 39 5 Technical Information StudioLive Al Series Loudspeaker 5 4 Optional Accesso
17. StudioLive Al Series Active Integration PA Speakers PreSonus E S N a S a S S gt Ss Manual Q N E A Owner 1 Overview 1 LI Introduction 7 4 2 1 2 AboutThis Manual 1 1 3 Summary of StudioLive Al Series Loudspeaker Features 2 1 3 1 Full range Models 312Al 315Al and 328Al 2 1 3 2 18sAl Subwoofer 2 1 3 3 SL Room Control 3 1 4 Whatisinthe Box 4 2 Getting Started 5 4 3 2 1 Level Setting Procedure Full Range 5 2 2 Level Setting Procedure 18sAl 8 3 Hookup 72 3 1 Rear Panel Connections and Controls 72 3 1 1 Full Range Models 312Al 315Al 5 and 328Al 12 3 1 2 18sAl Subwoofer 14 5 1 3 2 Onboard Performance Monitoring 15 5 2 3 2 1 A Note About the Limiter 16 3 3 Networking Connections and Controls 16 3 4 Power 17 3 5 Basic Hookup Diagram 18 3 6 Typical Band Setup Diagram 18 ge 3 7 Typical Venue Setup Diagram 19 3 8 Typical Corporate Conference Setup Diagram 19 4 System Configuration 20 54 4 1 Recognizing Problem Rooms 20 6 4 1 1 Vertical Coverage 21 4 1 2 Wall and Corner Loading 27 ed 4 1 3 Maintain a High Direct to Reverberant Ratio 22 6 2 Delay Systems 22 4 2 1 Delay Basics 23 4 2 2 SubAlignment 24 4 2 3 4 2 4 4 2 5 4 2 6 4 2 7 4 2 8 Real World Delay System Example 26
18. System Configuration Suggestions 26 Stereo System 27 Mono Cluster with Down Fill 27 LCR Systems 28 Monitor Systems 28 Rigging and Safety 29 4 3 1 Safety is the Priority 29 4 3 2 Ground Stacking 30 4 3 3 Pole Mount 30 4 3 4 4 3 4 Suspending the Loudspeaker 31 Precautions 32 Technical Information 33 Specifications 33 System Block Diagrams 35 5 2 1 Full range Models 35 328Al 35 312 315Al 36 5 2 2 18sAl Subwoofer 37 Mechanical Drawings 38 5 3 1 StudioLive 312Al 38 5 3 2 StudioLive 315Al 38 5 3 3 StudioLive 328Al 39 5 3 4 StudioLive 18sAl 39 Optional Accessories 40 Troubleshooting and Warranty 417 Support and Troubleshooting 47 Warranty 42 1 Overview StudioLive Al Series Loudspeaker 1 1 Introduction Owner s Manual dd Introduction Thank you for purchasing a PreSonus StudioLive Al series Active Loudspeaker PreSonus Audio Electronics has designed StudioLive Al series loudspeakers utilizing high grade components to ensure optimum performance throughout the life of your PA system StudioLive Al series loudspeakers are the first affordable active PA speaker systems that deliver studio monitor accuracy on stage exceptionally clear coherent sound while supplying the features and protection systems required to mix a live show that sounds great in a wide variety of venues and with any mus
19. TY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE OR BY COUNTRY OR PROVINCE OTHER THAN AS PERMITTED BY LAW PRESONUS DOES NOT EXCLUDE LIMIT OR SUSPEND OTHER RIGHTS YOU MAY HAVE INCLUDING THOSE THAT MAY ARISE FROM THE NONCONFORMITY OF A SALES CONTRACT FOR A FULL UNDERSTANDING OF YOUR RIGHTS YOU SHOULD CONSULT THE LAWS OF YOUR COUNTRY PROVINCE OR STATE PreSonus Products And EU Statutory Warranty When you purchase PreSonus products European Union consumer law provides statutory warranty rights in addition to the coverage you receive from the PreSonus limited warranty A summary of the EU Statutory Warranty and the PreSonus Limited Warranty is below EU Consumer Law PreSonus Limited _ Repair or Replacement Defects present when customer Defects arising after customer takes eee Coverage For takes delivery 2 years minimum from Warranty Period original date of purchase unless 1 year from original date of purchase unless superseded by PreSonus superseded by PreSonus Cost of Coverage Provided at no additional cost Included at no additional cost at no additional cost Who to contact to make The seller PreSonus technical support for your region What This Warranty Covers PreSonus Audio Electronics Inc PreSonus warrants defects in material and workmanship in PreSonus branded products under normal use This Limited Warranty applies only to hardware products
20. adapter e Wi Fi On Button and LED To turn on Wi Fi and activate wireless networking press the recessed Wi Fi button The red On LED above the button will illuminate e Wi Fi Setup Button and LED The recessed Setup button is used to reset to the default wireless network name StudioLive and password StudioLive To reset press and hold the Wi Fi Setup Button for 3 seconds e Network Status LEDs Two LEDs indicate status of wired or wireless Wi Fi network operation e Connected Illuminates blue when connected to either the Wi Fi access point in the controlling device a Mac PC or iPad or the wired LAN It will illuminate red when no network connection is present e Activity llluminates blinking as data packets are sent and received 3 Hookup StudioLive Al Series Loudspeaker 3 4 Power Owner s Manual A Power AC Line Connection StudioLive series loudspeakers have a universal power supply that accepts AC power input between 100 and 250V AC at 50 60 Hz Each loudspeaker is supplied with a locking IEC cord appropriate for the country of sale WARNING Do not remove the center grounding prong or use a ground lift adapter as this could result in electrical shock Power Switch This is the On Off switch for the StudioLive loudspeaker Use the rear panel power switch to turn the loudspeaker on 1 and off 0 Power status is indicted by an LED on the front of the cabinet Off power off Blue power on manual mode
21. against wind load StudioLive Al series full range loudspeakers can be mounted on top of a StudioLive 18sAl subwoofer using the optional SP1BK threaded subwoofer pole This 31 5 inch pole is designed to secure the 18sAl subwoofer and has been pull and tilt tested for safety with all three full range StudioLive Al series loudspeakers WARNING Do not substitute a longer pole from a third party supplier Use of a longer pole than specified could cause instability which in turn could result in serious injury or death WARNING StudioLive Al series loudspeakers weigh a minimum of 51 lbs 23 1 kg Use proper lifting techniques and safety precautions when mounting an Al series loudspeaker on a SP1BK subwoofer pole or speaker stand When mounting atop a speaker stand verify that it is rated to support the weight of your StudioLive Al series loudspeaker The weight of each model can be found in Section 5 1 30 4 System Configuration StudioLive Al Series Loudspeaker 4 3 Rigging and Safety Owner s Manual 4 3 4 Suspending the Loudspeaker A minimum of three suspension points must be used per speaker to safely suspend StudioLive Al loudspeakers Two wires fixed symmetrically to the front of the cabinet to hold the weight and one wire attached to the back for tilt will satisfy this requirement Select the strongest overhead structure available for the two front points and if possible two independent points to allow one to act as a backup
22. ber feet on one side for stage monitor applications If your application is primarily portable PreSonus loudspeakers can be easily ground stacked and configured for a variety of venues When ground stacking make sure all speakers are securely anchored to the floor using load straps or other anchors Rubber mats can also be utilized between cabinets to prevent boxes from walking This is particularly important if the speakers are accessible to the public Check that the surface the speakers are to be stacked on is level even and has sufficient structural integrity to support the speakers If ground stacking on a portable stage make sure you know what is directly below the speaker stack WARNING Placement on improper or unstable surfaces could cause the loudspeaker to topple which could result in serious injury or death All full range StudioLive loudspeakers are equipped with 35 mm pole socket that allows the speaker to be mounted on a speaker stand or on a pole over an 18sAl subwoofer This pole socket allows for straight 90 vertical mounting or for tilting the full range loudspeaker down 10 while on a pole When using a tripod speaker stand extend the legs to provide the most stable support to the speaker so that it cannot be tipped over It is highly recommended that tripod stands be placed away from foot traffic If the stands are to be used outdoors theatrical sand bags may be placed on the legs to provide some protection
23. bwoofer is equipped with two DSP contours DSP CONTROL These contours change the character of your StudioLive loudspeaker in a CONTOUR ALIGNMENT fundamental way adjusting FIR filters alignment and crossover settings to NORMAL Veena customize your loudspeaker for one of two applications Dan e Normal Optimized for use with mixers and full range loudspeakers 180 2M o EXTENDED LF e USER Hold e Extended LF Inserts a subharmonic bass synthesizer to extend extreme deep bass response Because these contours are changing fundamental tuning parameters your 18sAl will mute momentarily while the new parameters load Because of this do not change the DSP Contour once your performance has begun Press the recessed button below the User LED repeatedly to step between the contours User Layer The User Layer accesses DSP settings that you create using SL Room Control software This layer contains Low Pass Filter Delay and Group settings Parameter adjustments in SL Room Control are automatically stored in the DSP memory in real time You can also create and load user presets from SL Room Control For more information on SL Room Control see the SL Room Control Reference Manual Press and hold the recessed button below the User LED to turn the User Layer on or off This will apply the User Layer parameters on top of the currently selected DSP Contour when you are not connected to SL Room Control 14 3 Hookup StudioLive
24. com buy international_distributors and follow procedures provided by your PreSonus contact Limitation of Implied Warranties Exclusion of Damages ANY IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY Some states countries or provinces do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you PRESONUS S LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO THE REPAIR OR REPLACEMENT OF THE PRODUCT AT PRESONUS S SOLE OPTION IF PRESONUS ELECTS TO REPLACE THE PRODUCT THE REPLACEMENT MAY BE A RECONDITIONED UNIT IN NO EVENT WILL PRESONUS BE LIABLE FOR DAMAGES BASED ON INCONVENIENCE LOSS OF USE LOST PROFITS LOST SAVINGS DAMAGE TO ANY OTHER EQUIPMENT OR OTHER ITEMS AT THE SITE OF USE AND TO THE EXTENT PERMITTED BY LAW DAMAGES FOR PERSONAL INJURY OR ANY OTHER DAMAGES WHETHER INCIDENTAL CONSEQUENTIAL OR OTHERWISE EVEN IF PRESONUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Some states countries or provinces do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you If you have any questions about this warranty or service received please contact PreSonus USA at 225 216 7887 or one of our authorized international distributors at http www presonus com buy international_distributors Product features design and sp
25. correction and amplitude anomalies correction Wireless or wired networking with free SL Room Control software for Mac Windows and iPad enables complete setup tuning and monitoring Input mixer with e XMAX Class A solid state mic preamp with 12V phantom power e Line input with attenuation e Balanced Mix output 4 DSP Contours optimized for e Normal live front of house e LBR Source low bit rate source audio e Floor Monitor stage wedge e User customizable preset Speaker level control Universal switch mode power supply with power factor correction Comfortable ergonomic handles Integrated M10 fly points and pole mounts Ships with Ethercon connection for wired remote control Ships with USB Wi Fi module for wireless remote control Optional Dante card 18 inch transducer with 1 000 watt Class D amplifier Active Integration 32 bit 96 kHz DSP with variable crossover dynamic limiting and excursion limiting Stereo line inputs XLR V combo Switchable stereo summed mono line thrus XLR Adjustable alignment delay presets 0 1 or 2 meters 3 DSP Contours optimized for e Normal live front of house e Extended LF bigger bass sound e User customizable preset Integrated pole insert and interlocking stacking provisions Universal switch mode power supply with power factor correction Comfortable ergonomic handles Ships with Ethercon connection for wired remote control StudioLive Al Series Loud
26. d complete the registration process 2 Contact our Technical Support Department at 225 216 7887 or log a support ticket at http support presonus com TO AVOID THE POSSIBILITY OF SENDING IN A PRODUCT THAT DOES NOT HAVE A PROBLEM ALL SERVICE REQUESTS SHALL BE CONFIRMED BY OUR TECH SUPPORT DEPARTMENT 3 The return authorization number as well as shipping instructions shall be provided after your service request is reviewed and confirmed 4 The product should be returned for service in the original product packaging Products may be shipped in a manufactured flight or road style cases but PreSonus will NOT cover any shipping damage to these cases Products that are not shipped in the original product package or a manufactured case may not receive a warranty repair at PreSonus s sole discretion Depending on the product model and the condition of your original packaging your product may not be returned to you in the original packaging The return shipping box may be a generic box that has been fitted for that model tested if the original gift box is not available How to Get Warranty Service outside of USA 1 You must have an active user account with PreSonus and your hardware must be on file with your account If you do not have an account please go to http www presonus com registration and complete the registration process Contact the Technical Support Service Department for your region at http www presonus
27. d mounting practices will provide these benefits e Proper coverage of listening area with accurate speaker placement e Best installation methods will be utilized with regard to safety performance aesthetics and cost e Minimal wasted time during installation 4 3 1 Safety is the Priority WARNING Failure to observe the following safety precautions may result in severe injury or death Installations such as described in this guide should only be attempted by a trained professional e Inspect all the components associated with the project for damage before assembly Any suspect parts should not be used and the component manufacturer should be contacted to arrange for replacement parts e Read all instructions shipped with selected speaker or rigging products Make sure you fully understand all components e Always make sure that the structure the loudspeaker is to be suspended from has been approved by the building or structural engineer and will support the weight of all the components of the speaker system including speakers speaker cable wire rope etc e Make sure all installation crew members are trained for loudspeaker rigging and mounting and are in compliance with applicable local laws Local government offices can help with this information e Make sure that all relevant health and safety regulations are known and followed by the installation crew e Suspended installations must be completed or supervised by a certifie
28. d rigger e The system should be designed so that it is a static suspension There should be no dynamic or shock loading e Personal protective equipment hardhats steel toed footwear safety glasses etc should be worn at all times by the installation crew e If called for in the design make sure all installation personnel are trained to work at height and have certifications for scissor lifts theatrical hoists etc e Make sure all lifting equipment slings span sets deck chain scaffolding etc is in good working order Thoroughly inspect all components prior to use e Keep a tidy workplace Do not leave tools rigging items etc on top of loudspeakers during installation Loose items can fall and cause injury e Never leave the system unattended during the installation process Make sure that the workspace is isolated from public access No one should be allowed to pass beneath the loudspeakers during installation e Donot suspend any other components or loudspeakers from PreSonus StudioLive Al loudspeakers e f secondary steel safeties are required they should be installed once the entire system is at operating height and before public access is allowed 29 4 System Configuration StudioLive Al Series Loudspeaker 4 3 Rigging and Safety Owner s Manual 4 3 2 Ground Stacking StudioLive Al series full range loudspeakers have four nonskid rubber feet on the bottom for upright front of house use and four nonskid rub
29. d that you turn down the channel trim or power down your loudspeaker before changing connections This simple step will add years to life of your audio equipment Mix Out A balanced Mix output is provided on an XLR M connector The Mix Out connection is used to send signals connected to the inputs of your loudspeaker to other StudioLive series loudspeakers The Mix output signal is the same as the signal sent to the loudspeaker s internal amplifier and it may be derived from the microphone input the line input or a mix of both Power User Tip When cascading to the Line Input on a second speaker from the Mix Out set the Line Input Level on the second speaker to 0 dB and use the Speaker Level control to attenuate the volume as needed In this way you will maximize signal clarity and minimize distortion 3 Hookup StudioLive Al Series Loudspeaker 3 1 Rear Panel Connections and Controls Owner s Manual SPEAKER DSP PRESETS NORMAL LBR SOURCE FLOooOR MON USER Hold Speaker Level This control attenuates the output level of your StudioLive full range loudspeaker s internal amplifier As with the Line Input level control in most situations you can set this knob fully clockwise to the 0 dB setting Note The Mix output level is not affected by the Speaker level control Power User Tip The Speaker level control allows you to set the maximum output level of your speaker This is especially
30. dels are the same In many respects the functions of the 18sAl are also the same Whenever possible these features and functions will be described for the entire line Unless preceded by full range the term loudspeaker will refer to both full range models and the subwoofer Throughout this manual you will find Power User Tips highlighting unique aspects of StudioLive Al series loudspeakers as well as explanations of various audio terms In addition you will find tutorials that cover the basics of room acoustics and speaker placement Thank you once again for buying our product We are confident that you will enjoy your StudioLive Al loudspeakers 1 Overview StudioLive Al Series Loudspeaker 1 3 Summary of StudioLive Al Series Loudspeaker Features Owner s Manual 1 3 Summary of StudioLive Al Series Loudspeaker Features 1 3 1 Full range Models 312Al 315Al and 328Al 1 3 2 18sAl Subwoofer Unique coaxial design integrates a custom designed 8 inch ferrite midrange driver and 1 75 inch titanium compression driver with Temporal Equalization and Coaxial Speaker Coherence Alignment 12 inch 15 inch 2x8 inch ferrite low frequency transducer 2 000 watt Class D triamplification Active Integration 32 bit floating point DSP with asymmetric three way crossover performance contouring dynamic limiting excursion limiting and Temporal Equalization which compensates for horn reflection and manages linear time
31. dspeaker to which your sources are connected to the line input of the second loudspeaker and repeat steps 9 11 E CLORO LLL LA POMO OOO ME MEMO O KO OOO OOOO OOO O CO COCO COCO Ono ORKLA KLAAI AKA KA KAKS AUDIO 1 0 LINE Y DSP PRESETS NORMAL SPEAKER Mo TUDIOLIVE 328 Active_ INTEGRATION S a PreSonus J 2 2 Level Setting Procedure 18sAl u 4 N 68 18 es A Ab E Q A OFF 48dB 24dB Odg Ss y BO 24dB O STUDIOLIV With the power switch in the Off position connect the locking IEC plug to the IEC socket connection on the back of each loudspeaker and plug it into a grounded AC outlet or surge protector Turn the Mic Line and Speaker level knobs on your full range loudspeakers fully counterclockwise to the lowest position 2 Getting Started 2 2 Level Setting Procedure 18sAl oo0oo0oo0000000000000000Q000 AUDIO 1 0 lg DSJ CONTOUR MD PreSonus STUDIOLIVE 18s AUDIO I O m n A Oo E evel MonMDutput StudioLive Al Series Loudspeaker Owner s Manual 3 Turn the Sub level knob on your 18sAl counterclockwise to the lowest position Connect your line level source e g a StudioLive mixer to the Line inputs This is a co
32. e Temblor and XMAX are trademarks or registered trademarks of PreSonus Audio Electronics Inc Capture Impact Mixverb Presence RedLightDist SampleOne Studio One and Tricomp are trademarks or registered trademarks of PreSonus Software Ltd Mac and Mac 0S are registered trademarks of Apple Inc in the U S and other countries Windows is a registered trademark of Microsoft Inc in the U S and other countries Other product names mentioned herein may be trademarks of their respective companies All specifications subject to change without notice except the recipe which is a classic StudioLive Al Series Active Integration PA Speakers E E a aya eee Ean pane o L a aaa A ay EN y fae E y TA WA TT Fr AN YA i d B i A OCE X A WA UE Y een REV 4 F a s p al A ARN a e 18011 Grand Bay Ct e Baton Rouge VAWIVITVO a Puiu Louisiana 70809 USA 1 225 216 7887 AVY D 1 E onus Partit 820 NRG0026 D WAAR wWww presonus com
33. e away from or in front of the subwoofer as specified in the setting As room acoustics will influence effectiveness we recommend listening tests using the different Alignment settings in conjunction with alternate Polarity settings to determine the best results For permanent installations or recurring temporary use in the same space we recommend creating a User preset using SL Room Control software mina Polarity The Polarity button reverses the polarity of the summed input signal Press the recessed Polarity button to reverse signal polarity The LED will illuminate to indicate that the polarity is reversed 180 Power User Tip Reversing the polarity can improve the system s response when low frequency waveforms from the subwoofer are reinforced or canceled by waveforms from another subwoofer or from the low frequency drivers of the full range loudspeakers This is acomplex interaction that also includes room acoustics so setting is best done by ear 3 2 Onboard Performance Monitoring SIGNAL LIMIT THERMAL Performance Monitoring These four LEDs display the performance status of the internal amplifier Signal illuminates green when a signal is present at the input Limit Illuminates yellow when the internal limiter is engaged Clip llluminates red when the input signal reaches O dBFS At this level the signal will exhibit signs of clipping distortion and the analog to digital ADC converter and theref
34. ecifications are subject to change without notice Dinner is Served Added bonus PreSonus previously Top Secret recipe for Jambalaya Ingredients e 5 lbs link andouille sausage e 3 lbs boneless chicken e 2 lbs ground beef e 3 lbs onions yellow or purple e 2 stalks of celery e 1 lb bell peppers green or red e 1 batch green onions e 3lbsrice e Tony Chachere Cajun Seasoning e 1 bottle chicken stock concentrate or 3 cubes chicken bullion e 1can Rotel tomatoes with chilies diced regular hot e Tabasco sauce Cooking Instructions 1 Ina16qt pot or larger slice link sausage and pan fry until brown 2 Add ground beef and brown 3 Donot remove from pot Add diced onions celery and bell peppers 1 can Rotel Original diced tomatoes with chilies 3 oz concentrate chicken stock Y teaspoon of Cajun seasoning 1 teaspoon of Tabasco hot sauce or more maybe lots more Cook until onions are translucent Add chicken and cook until it turns white Add diced green onions 1 tsp salt 2 gallon water and bring to a boil Cook covered on low for 10 minutes stirring only once 4 5 6 7 Add rice and bring to a boil Cook on high for 8 minutes covered stirring every 2 minutes 8 9 Turn off and let sit for 30 minutes 1 O Serve and enjoy Serves 20 2014 PreSonus Audio Electronics Inc All Rights Reserved Active Integration AudioBox DigiMax FireStudio Nimbit Notion PreSonus QMix Al StudioLiv
35. f you re in an old cotton mill and the walls and floor are made of thick concrete that don t vibrate much the bass response is going to be much more powerful than if you ve set up a show in an old warehouse where the walls are made of barge board and tin 20 A System Configuration StudioLive Al Series Loudspeaker 4 1 Recognizing Problem Rooms Owner s Manual 4 1 1 Vertical Coverage Itis important to keep in mind that vertical coverage is just as important as horizontal coverage If you are using a ground stack approach with pole mounts make sure your coverage matches the listening plane Suspension of speakers will provide even further control Each StudioLive Al series full range loudspeaker features dual position pole mounts Using the 10 downward tilt mount will focus the loudspeaker s energy onto the audience and avoid destructive reflections This is ideal for situations where the loudspeaker is mounted atop a tripod stand and placed on a stage or where the pole mounted loudspeaker is on the floor and the coverage area is relatively shallow conference coffee house etc Flat Floor with Stage l Ka Elevated Floor No Stage Flat Floor a 4 1 2 Wall and Corner Loading Very low frequencies are not directional so they radiate out of the sides and back of the loudspeaker as well as out of the front If you place a loudspeaker against a wall the rear sound propagates back into the room This can increa
36. he highest frequencies that are reproduced by the subwoofer StudioLive Al series loudspeakers are designed to avoid this problem when combined with an 18sAl subwoofer This means that for applications where a frequency overlap at 100 Hz is beneficial you can achieve bigger bass sound without any extra effort For applications that require a more linear frequency response between the subwoofer and full range content simply engage the highpass filter on the full range Al series loudspeaker This will also readjust the phase and time alignment to keep it in phase with the 18sAl subwoofer enabling you to create the best four way system for your application 3 Hookup StudioLive Al Series Loudspeaker 3 1 Rear Panel Connections and Controls Owner s Manual 3 1 2 18sAl Subwoofer Line Inputs The 18sAl features two line level inputs These balanced combo connections are provided to connect your subwoofer to a StudioLive digital mixer or other mixing console The line inputs will accept up to a 24 dBu source before clipping Power User Tip Two inputs are provided in order to accept a stereo signal from the output of the mixing console Both channels should be connected as the low frequency content from both channels of a stereo signal is summed before the lowpass filter However if the mixing console output signal is mono only or if you are sending low frequency channels bass kick keyboards etc to a separate aux or subgroup output for the s
37. ic Level Variable Off to Mic Level Variable Off to Mic Level Variable Off to Speaker Level Variable 12 48 dB Line Attenuation 48 dB Line Attenuation 48 dB Line Attenuation dB to 12 dB Mono Sum Variable 24 dB to 0 dB Variable 24 dB to 0 dB Variable 24 dB to 0 dB Speaker Attenuation Vari Speaker Attenuation Vari Speaker Attenuation Vari able 24 dB to 0 dB able 24 dB to 0 dB able 24 dB to 0 dB DSP Preset HPF On Off Net DSP Preset HPF On Off Net DSP Preset HPF On Off Net DSP Preset Delay Preset work Connected Network work Connected Network work Connected Network Polarity Invert Network Activity WiFi Setup WiFi On Activity WiFi Setup WiFi On Activity WiFi Setup WiFi On Connected Network Activity Signal Limit Clip Thermal Signal Limit Clip Thermal Signal Limit Clip Thermal WiFi Setup WiFi On Signal Limit Clip Thermal Continued on the following page 33 5 Technical Information StudioLive Al Series Loudspeaker 5 1 Specifications Owner s Manual Continued from the previous page ST CT St328 SET Contour Presets Normal LBR Source Floor Normal LBR Source Floor Normal LBR Source Floor Normal Extended LF Monitor Monitor Monitor 100 Hz 4th Order Linkwitz 100 Hz 4th Order Linkwitz 100 Hz 4th Order Linkwitz To T E Polarity NormalorReverse or Reverse Sampere ww ww ll ww ww e MOE E MC Powder coated Steel Powder coated S
38. ical genre These features include wireless and wired control of all setup and monitoring functions using an iPad or laptop including customized signal delay and EQ processing Loaded with unprecedented amounts of DSP an 8 inch custom CoActual coaxial speaker Fulcrum Acoustic s TO Temporal Equalization algorithms and more StudioLive Al series loudspeakers break new ground for live music speaker systems We encourage you to contact us with questions or comments regarding this product PreSonus Audio Electronics is committed to constant product improvement and we value your suggestions highly We believe the best way to achieve our goal of constant product improvement is by listening to the real experts our valued customers We appreciate the support you have shown us through the purchase of this product For technical support please see Section 6 1 Troubleshooting 1 2 About This Manual This manual covers hardware features and functions for all three full range Al loudspeakers 312Al 315Al and 328Al as well as the companion 18sAl subwoofer We suggest that you use the manual to familiarize yourself with the features applications and connection procedures for your StudioLive Al series loudspeakers before trying to set up and operate them Except for low frequency driver configuration and some technical specifications such as weight frequency response and maximum SPL the features and functions of the three full range mo
39. iginal date of purchase from the retail purchaser and the duration is as follows 1 Year Limited Warranty Product Category Model Transferable AudioBox iOne AudioBox iTwo AudioBox Stereo AudioBox Studio AudioBox USB Recording Interfaces AudioBox VSL 1818 44 22 FireStudio Project FireStudio Mobile FireStudio Mobile Studio Music Creation Suite Pre amplifiers ADL600 ADL700 BlueTube DP V2 DigiMax D8 Eureka RC500 StudioChannel TubePre V2 StudioLive Mixers SL 1642 SL 2442 SL 1602 SLM16 4 2 Al SLM24 4 2 Al SLM32 4 2Al Eris Central Station Plus FaderPort HP4 HP60 Monitor Station Monitor Station V2 Sceptre Temblor Signal Processing ACP88 Accessories Covers Dolly PRM1 mic Sub Pole Breakout Cables Power Supplies M10 Kit 3 Years Limited Warranty Monitoring amp Controlling Product Category Model Transferable Live Sound StudioLive Al 328 312 315 18 Ves What PreSonus Will Do PreSonus will repair or replace at our sole and absolute option products covered by this warranty at no charge for labor or materials If the product must be shipped to PreSonus for warranty service the customer must pay the initial shipping charges PreSonus will pay the return shipping charges How to Get Warranty Service USA 1 You must have an active user account with PreSonus and your hardware must be on file with your account If you do not have an account please go to http www presonus com registration an
40. ins to be at equal level to the PA in the intelligibility range When working outside the delay system is used to overcome outdoor noise including but not limited to crowd murmur concessions generators tractors babies etc At this point the main system needs more support in order to deliver the same perceived loudness as you get further from the source FOH Mix Position Once you have positioned and delayed your satellite system use an SPL meter to match the output of the main and delay systems at the measurement point If you are standing 20 feet from the left side of the main system and 30 feet from the left side of the delay system and if the output of the main system is 85 dB the output of the delay system should also be 85 dB 4 2 2 Sub Alignment The 18sAl subwoofer has been designed and customized for use with the full range Al series loudspeakers It features three delay presets to guarantee that your 4 way system stays in alignment OM Select this setting when the full range system is directly over the subwoofer i e mounted atop using the SP1BK sub pole accessory No delay is added to the subwoofer amplifier output 1M Select this setting when the subwoofer is about one meter from the full range loudspeaker a typical distance when the loudspeaker is on an adjacent tripod stand A delay of about 2 9 ms is introduced to the signal that is output through the subwoofer amplifier 24 4 System Configuration S
41. ive moisture They are not designed for outdoor use during inclement weather If you are using your StudioLive Al series loudspeakers outside when rain or other wet weather occurs immediately power down your loudspeakers and protect the cabinets with waterproof coverings The amplifiers in StudioLive Al series loudspeakers are convection cooled via the rear panel heatsink Free airflow must be maintained around and behind the heatsink with a minimum clearance of six inches behind the cabinet Make certain the heatsink is kept clear of any adjacent materials such as stage curtains that could impede airflow 32 5 Technical Information StudioLive Al Series Loudspeaker 5 1 Specifications Owner s Manual Technical Information 5 1 Specifications ST CTO genau ES ET Acoustic Performance 3 Way Tri amplified Loud 3 Way Tri amplified Loud 3 Way Quad amplified speaker System speaker System Loudspeaker System kHz HF 1 8 kHz kHz HF 1 8 kHz oie CoiDiameter O Amplifier Total Power Output 2000W Total Power without 2000W Total Power without 2000W Total Power without 1000W Total Power without Protection Algorithms amp Protection Algorithms amp Protection Algorithms amp Protection Algorithms amp Limiter enabled Limiter enabled Limiter enabled Limiter enabled Fewer mmer mme um mmer Connections amp Controls SEET Line putimpedance ww mm mm Maximuminput om am wm om M
42. ize e Construction e Reflectivity The size of the room directly impacts how well certain frequencies will be reproduced For example if you measure a room diagonally you will discover how well that room will be able to sustain low frequencies This may seem odd until you think about the physical size of audio waves at various frequencies For example a 50 Hz wave is about 22 6 feet long To calculate how big an audio wave is divide the speed of sound 1 130 ft second by the frequency For a 50 Hz wave 1 130 50 22 6 ft So a room that is 45 feet on the diagonal is going to regenerate low frequencies more effectively than a room that is 15 feet on the diagonal When a room s width or length correlates directly to the size of a waveform at a specific frequency a standing wave can occur where the initial sound and the reflected sound begin to reinforce each other Let s say we have a long narrow room where the distance from one side to the other is 22 6 feet When a 50 Hz wave bounces off the wall the reflective wave travels right back along the same path and bounces off the other wall and cycle repeats In a room such as this 50 Hz reproduces very well maybe too well So any mix will have a heavier low end In addition low frequency waves are powerful enough to cause the walls ceiling and even the floor to flex and move This is called diaphragmatic action and it dissipates energy and strips away the low end definition So i
43. manufactured by or for PreSonus that can be identified by the PreSonus trademark trade name or logo affixed to them Exclusions and Limitations 1 This warranty does not cover the following Damage caused by accident abuse improper installation failure to follow instructions in the applicable owner s manual or improper operation rental product modification alteration or neglect Damage from improper grounding faulty wiring AC and signal faulty equipment or connection to a voltage range outside published specifications see applicable owner s manual Damage to drivers or diaphragm assemblies found to have burnt voice coils from over under driving or signal surge from another device 4 Damage occurring during shipment or improper handling 42 5 Damage caused by repair or service performed by persons not authorized by PreSonus 6 Products on which the serial number has been altered defaced or removed 7 Products purchased from an un authorized PreSonus dealer products that have transferable warranties are excluded from this provision provided the customer and the product are registered with PreSonus Who This Warranty Protects This Warranty protects only the original retail purchaser of the product products that have transferable warranties are excluded from this provision provided the customer and the product are registered with PreSonus How Long This Warranty Lasts The Warranty begins on the or
44. mbo jack that accepts a balanced TRS or XLR plug If you are connecting a stereo source the left side should be connected to Input 1 and the right side should be connected to Input 2 5 Connect Output 1 of your 18sAl to the left full range loudspeaker and Output 2 of your 18sAl to the right full range loudspeaker OO MOMO MOMO MIO MOMO MOMIA OMAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 RARO OOO SO COCO RO CORO COCOS 0000000000000000000000 AUDIO 1 0 D DSP PRESETS NETWORK INE RIGHT ICO MOMO MOMO OOO MO MOMO MIMOSA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 OOOO OPPO oo0o00000000000000000000 AUDIO 1 0 DSP PRESETS NETWORK LINE Ai TUDIOLIVE 328 M INTEGRATION O D one omo LD O AM O 0 0 0 00 000 000 Cococococooooococococooocoo p O000000000000 0 0 DSP CONTROL MD PreSonus STUDIOLIVE 18s INTEGRATION 2 Getting Started StudioLive Al Series Loudspeaker 2 2 Level Setting Procedure 18sAl Owner s Manual 6 Power on your line level source 7 Power on your 18sAl HMMMR MMMM MMMM RRA CO O OOO O 0 0 0 0 0 0 0 0 0 0 0 0 LOO OO OOOO OOO AA 8 Power on your StudioLive Al full range loudspeakers Q0 0 0 0 0 0 0 0 0 O 0 0 0 0 0 O Y EE aoo o o0
45. ne technical support is available to customers in the USA on Monday through Friday from 9 a m to 5 p m Central Time by calling 1 225 216 7887 Customers outside of the USA should contact their national or regional distributor for telephone technical support A list of international distributors is provided at www presonus com buy international_distributors Loudspeaker won t turn on Ifthe loudspeaker is plugged in and the switch is on but no LEDs illuminate check the following e Make sure the power cord is fully and securely inserted in the IEC receptacle and in the wall outlet e Confirm that the AC outlet is live using a tester or other device such as a lamp that is known to be working e Ifthe loudspeaker still shows no power it is possible that the internal fuse may have opened This is not a user serviceable part Contact PreSonus technical support for more information Loudspeaker is on but there s no sound Check to make sure the signal is live from an external source Check that output faders are up on the mixing console and check the output level using headphones If another speaker in a stereo configuration is working swap input cables If the problem moves replace the faulty cable If the loudspeaker has been producing sound at high levels and then stops it may have gone into thermal muting Allow the unit to cool and make sure the heat sink has sufficient ventilation Sound breaks up intermit
46. ngaged the full range loudspeakers are time aligned to pair with the 18sAl to create a true 4 way system Experiment with engaging and disengaging this filter to get the desired effect Without the filter engaged your system will provide bigger low frequency content Engaging the filter will provide a more linear frequency response In either case please remember that engaging disengaging the highpass filter will also adjust the time alignment of the speaker and it will mute momentarily until all filters and timing settings have been loaded in the DSP 3 Hookup StudioLive Al Series Loudspeaker 3 1 Rear Panel Connections and Controls Owner s Manual 3 Hookup 3 1 Rear Panel Connections and Controls 3 1 1 Full Range Models 312Al 315Al and 328Al 12V Microphone Input Your Al series full range loudspeaker is equipped with a PreSonus XMAX microphone preamplifier for use with most microphone types The XMAX solid state preamplifier has a Class A input buffer followed by a dual servo gain stage This arrangement results in ultra low noise and wide gain control allowing you to boost signals without increasing unwanted background noise A 12V phantom power supply is present on the microphone input at all times XLR connector wiring for phantom power Pin1 GND Pin2 12V Pin 3 12V WARNING Phantom power can severely damage some dynamic microphones especially ribbon mics Therefore we recommend reviewing your microphone docume
47. ntation prior to use to ensure that it will not be damaged by low level phantom power Note that the supplied 12V may not be adequate for some condenser mics Microphone Input Level Adjusts the gain level of the Microphone input Power User Tip It is very important to properly adjust this control in order to minimize noise and avoid overload distortion Follow the level setting instructions in Section 2 1 before operating a channel Line Input This is a balanced XLR 14 TRS combo connection for line level input Use the Line input to connect the loudspeaker to a StudioLive digital mixer or other mixing console either directly or through the Line in out connectors ona StudioLive S18sAl subwoofer The Line input will accept a signal level of up to 24 dBu before clipping Line Input Level Adjusts the gain level of the Line input Like the Microphone Input Level it is very important to properly adjust this control in order to minimize noise and avoid overload distortion This knob provides attenuation control only In most situations you will set this control fully clockwise to 0 dB However if your line level source has a very high gain output you may need to attenuate it to avoid clipping the ADC Note As with any amplifier or active loudspeaker plugging in a microphone or a line level input device will create a momentary spike in the audio output of your StudioLive full range loudspeaker Because of this it is highly recommende
48. nto your signal path OUT 9 With audio playing through your line level source turn the Line level knob until you have achieved a comfortable listening volume If you are not using the Line input it is recommended that you leave this knob in the 24 dB position so as not to introduce noise into your signal path 2 Getting Started StudioLive Al Series Loudspeaker 2 2 Level Setting Procedure 18sAl Owner s Manual SIGNAL LIMIT CLIP THERMAL O O y 1800 A e OFF aa 2448 0dB DEN D O H COMO MOMO MOMO KO MOMO EE 000000000 000 00000000 0 0 POMO MOM MEMO MOMO MOMO O MOMO MOMO KO 0000000000000000000000 AUDIO 1 0 __DSP PRESETS IC NETWORK _ ay E O Mo Presonus STUDIGLIVE 328 O XN y 10 Both the Microphone and Line inputs should be set so that the green Signal LED is illuminated most of the time but the red Clip LED illuminates only with the highest transient peaks or not at all 11 If more output level is required turn the Speaker level knob clockwise This is the master level control for your loudspeaker It controls the mixed signal of the Mic and Line inputs 12 Ifyou are using the input mixer of one loudspeaker to connect a microphone and a line level source or if you are running a mono system connect the Mix Out from the lou
49. olume with these controls turned all the way up 0 dB make sure that your mixer is properly gain staged and that you are using enough loudspeakers for your application Your PA and studio equipment should be powered on in the following order Sound sources keyboards direct boxes microphones etc connected to your mixer Mixer StudioLive Al series Loudspeakers When it s time to power down your system should be turned off in the reverse order Now that you know what not to do let s get some audio going The following level setting tutorials cover best practices that can be applied to nearly every application The first tutorial covers level setting for the full range models only the second tutorial describes proper level setting for a system that includes one 18sAl subwoofer and two full range Al series loudspeakers 2 1 Level Setting Procedure Full Range TETTTTYTTTSTE 0000 000 0000 09 MOONEY OY 1 With the power switch in the Off position connect the locking IEC plug to the IEC socket connection on the back of the loudspeaker and plug it into a grounded AC outlet or surge protector Power User Tip While a locking IEC cable is ideal for permanent installation be careful that this cable cannot be tripped over in ground stacked applications as this is a toppling risk 2 Turn the Mic Line and Speaker level knobs fully counterclockwise to the lowest position 2 Getting S
50. ore the amp will be clipping Thermal illuminates red when the amplifier power supply or output stages exceed thermal limits The amplifier will mute until the temperature drops below the thermal limit threshold Power User Tip Never run your input levels higher than the channel inputs can handle If you overdrive the A D converters it will cause digital distortion digital clipping which sounds terrible It should be noted that additional performance monitoring is available in SL Room Control Please see the SL Room Control Reference Manual 3 Hookup StudioLive Al Series Loudspeaker 3 3 Networking Connections and Controls Owner s Manual 3 2 1 A Note About the Limiter All StudioLive Al series loudspeakers provide reliable operation at high sound pressure levels by incorporating an innovative new multi band limiting architecture This system evaluates both the excursion and voicecoil temperature of every driver and uses that information to maximize the output of the loudspeaker while preserving the integrity of audio sources that span more than one band This means that even when exceeding the threshold of the limiter StudioLive Al series loudspeakers continue to provide clean and powerful vocals without the harsh edginess that is characteristic of conventional protection schemes Because of this you may not hear the limiter even though the Limit light is illuminated 3 3 Networking Connections and Controls Control
51. r this goal is achieved by overcoming different obstacles depending on whether you are indoors or outdoors In both situations the delay system should be set where the main systems intelligibility falls apart As with the main system the placement of the delay systems will determine how successfully you are able to achieve these goals Inside Indoors you are trying to overcome the direct to reverberant reflections The location of the delay system is dependent on the critical listening area typically just behind front of house Your goal is to find where the direct signal to reverberation ratio has reached about 50 50 At this point the reflections in the room are at an equal level to the direct sound of the PA and vocal intelligibility is lost Listen for a lack of intelligibility in the vocals and find the point at which the drums and rhythm section don t feel tight A great way to find the best position for your delay speakers is to set up and tune your main system and play audio through it Play something similar to what you will be mixing later Set the level so that it is comfortable from the front row Walk backward away from the main system until you notice a lack of clarity This is the beginning of the space that will need delay system coverage 23 4 System Configuration StudioLive Al Series Loudspeaker 4 2 Delay Systems Owner s Manual Outside Outdoors you are trying to maintain level as the noise floor of the crowd beg
52. ries Owner s Manual 5 4 Optional Accessories The following optional accessories are available through your PreSonus dealer Flying Kit M10AI KIT Q000 The M10 Flying Kit is intended for use with all StudioLive Al series full range loudspeakers and includes four M10 eyebolts Custom Sub Pole SP1BK S Use the custom threaded pole to mount a StudioLive Al series full range loudspeaker over an 18sAl subwoofer Pole length has been measured and tested for system stability Platform Dolly for 18sAl D18s This is a heavy duty platform dolly that has been custom designed for stable secure movement of the 18sAl subwoofer Protective Soft Covers These protective soft covers are custom fitted for each model Tough rip resistant material protects loudspeaker cabinets during transportation A cutout allows access to the handles Order according to speaker model number 40 6 Troubleshooting and Warranty StudioLive Al Series Loudspeaker 6 1 Support and Troubleshooting Owner s Manual Troubleshooting and Warranty 6 1 Support and Troubleshooting Please check the PreSonus Web site www presonus com regularly for software information and updates firmware updates and support documentation including frequently asked questions Online technical support is available at www presonus com support Contact Technical Support Technical support is available via email at techsupport presonus com PreSonus telepho
53. se output of bass frequencies as much as 6 dB and as much as 12 dB if you put the loudspeaker in a corner In order to have the most control over your sound it s best to always start with the flattest response so you normally should avoid wall and corner placement On the other hand if you need some extra bass boost this technique may be worth a try It is important to be aware of what s happening and be prepared to take advantage of it or compensate for it Power User Tip Because a floor monitor placed on the stage is unavoidably subject to half space loading the Monitor DSP contour in your StudioLive Al series full range loudspeaker is specifically designed to compensate for bass buildup and maintain a tight mid bass response 21 4 System Configuration StudioLive Al Series Loudspeaker 4 2 Delay Systems Owner s Manual 4 1 3 Maintain a High Direct to Reverberant Ratio Another way a room interacts with sound waves is through reflectivity Like most room anomalies reflections can be good and bad Consider the effect of a cathedral s reflections on a choir or a piano This type of reverberation reverb is quite desirable But not all reverb is good reverb Reflections can also cause comb filtering For example if a speaker is placed near a reflective surface such as a concrete wall the direct sound coming from the speaker and the reflected sound coming from the wall can arrive at the listener s ears out of phase with each other
54. speaker Summary of StudioLive Al Series Loudspeaker Features Owner s Manual e Ships with USB Wi Fi module for wireless remote control e Optional Dante card e Optional Sub Dolly and pull tested Sub Pole to mount a full range system atop the 18sAl 1 3 3 SLRoom Control PreSonus StudioLive Al series Active Integration PA speakers offer a wealth of system control and performance monitoring features that give you unprecedented control The secret to accessing these features is SLRoom Control a soeaker management system and remote control monitoring software for Mac OS X Windows and OS To use SL Room Control you simply create a local area network using a wireless router and connect your StudioLive Al speakers with the included USB 2 0 Wi Fi LAN adapter or onboard Ethercon connection Connect your Mac PC or iPad to the same Wi Fi network and launch SL Room Control to unlock your StudioLive Al speaker system s full power SL Room Control Network Setup wizard makes it easy to network your entire system e Remote control over e Polarity invert 18sAl e DSP Contours e 100 Hz highpass filter 312Al 315Al 328Al e Network Setup wizard e Network scanning to automatically detect all speakers e Network browser e Performance monitoring over e Excursion limiting e Over temperature e ADC clip detection e Power amp soft limiting e Group speaker management with level control and 31 band graphic EQ e 8 band parametric EQ 312Al
55. tance from the overlap area to each speaker location Subtract the smaller distance from the larger Divide that number by 1 100 and apply that delay value to the speaker that is closest Keep in mind that the overlap area may be behind FOH 25 4 System Configuration StudioLive Al Series Loudspeaker 4 2 Delay Systems Owner s Manual 4 2 3 Real World Delay System Example ZONE 3 SL312Al SL315Al Source SL328Al SL328Al The goal in a complicated system with loudspeakers distributed throughout the venue is to delay each satellite system to its counterpart in the main system e g the left front fill to the left FOH loudspeaker e Delay the main system relative to the source on stage On small stages where the guitar amp and drum kit can be clearly heard above the FOH loudspeaker system delaying the main system can move up the backline so that it aligns with these instruments and decreases blurring in the mix This will tighten the overall mix and give it more punch e Delay the front fills relative to the main system by delaying each side of the system independently e g delay the left front fill to the left FOH loudspeaker e Delay subwoofers relative to the main system How you do this will depend on how your subwoofer system is positioned and configured In general you will want to delay each subwoofer relative to the full range loudspeaker closest to it e Delay down fill soeakers upper and under balcon
56. tarted StudioLive Al Series Loudspeaker 2 1 Level Setting Procedure Full Range Owner s Manual 3 If you re using the StudioLive full range loudspeaker as a mixer connect a microphone to the Mic input with a standard XLR cable 4 Connect your line level source such as a PreSonus StudioLive digital mixer to the Line input The Line input is a combo connection that accepts a balanced TRS or XLR cable Power User Tip If you are running a stereo system connect the Left output of your mixer to the Left loudspeaker s line input and the Right output to the Right loudspeaker s line input _DSP PRESETS NETWORK y 5 Power on your line level source 2 Getting Started StudioLive Al Series Loudspeaker 2 1 Level Setting Procedure Full Range Owner s Manual 6 Power on your StudioLive loudspeaker OO EE 0 0 0 0 0 EE RR CN 7 Turn the Speaker level knob to the 12 o clock position AS TE 0202020002000000 MEMOS Y OO BON OFF 48dB ER eg d gt d Sa ag 0dB D 8 While speaking into the microphone use the Mic level knob to adjust the microphone level Be sure that you are not standing directly in front of the loudspeaker while doing this as doing so could result in feedback If you are not using the Mic input it is recommended that you leave this knob in the Off position so as not to introduce noise i
57. teel Powder coated Steel Powder coated Steel Dimensions site __ x Dx W 24 8 x 19 5 x 16 4 630 x 27 9 x 21 5 x 18 6 709 x 30 1 x 15 7 x 13 3 765 x 23 x 24 x 26 585 x 610 x 496 x 417 mm 547 x 473 mm 399 x 338mm 661 mm 62 Ibs 28 12 kg 71 lbs 32 2 kg 51 Ibs 23 13 kg 94 Ibs 42 64 kg oe O l Safety Amplifier Protection Over Current DC Over Over Current DC Over Over Current DC Over Over Current DC Over Under Voltage Over tem Under Voltage Over tem Under Voltage Over tem Under Voltage Over tem perature High Frequency perature High Frequency perature High Frequency perature High Frequency Transducer Protections 4 ch Multi Threat Limiter 4 ch Multi Threat Limiter 4 ch Multi Threat Limiter 4 ch Multi Threat Limiter AC Power Input 100 230V 50 60 Hz 100 230V 50 60 Hz 100 230V 50 60 Hz 100 230V 50 60 Hz AC Power Consumption 1 8 250W 250W 250W 150W Power Suspension Mounting 12 M10 12 M10 12 M10 n a Rigging Points Mounting 35 mm 2 Position 35 mm 2 Position 35 mm 2 Position Accessories Replacement Parts mm NOOO TOS ene ll ww mw sw mmm Replacement Parts 355 NRG COAX 8 8 Coaxial 355 NRG COAX 8 8 Coaxial 355 NRG COAX 8 8 Coaxial Driver Driver Driver 355 NRG LO FREQ 12 12 355 NRG LO FREQ 15 15 355 NRG LO FREQ 8 8 355 NRG LO FREQ 18 18 Low Frequency Driver Low Frequency Driver Low Frequency Driver Low Frequency Driver
58. tently Distorted sound Check the input sources using headphones if possible to determine if the problem is with the source Check console outputs and all input and loop thru connectors to make sure they are securely plugged in If the problem persists try replacing cables with spares Check the input sources using headphones if possible to make sure the signal is not already distorted Check the clip indicator on the rear panel or in SL Room Control monitoring If the LED is lit all or most of the time reduce the input levels 41 6 Troubleshooting and Warranty StudioLive Al Series Loudspeaker 6 2 Warranty Owner s Manual Loudspeaker has hum or buzz 6 2 Warranty Nearly all hum and buzz problems are related to cable grounding With the loudspeaker at low volume remove input and output cables one at a time until the noise disappears Try replacing the suspect cable If you are using two conductor cables with unbalanced 1 4 connectors try replacing with balanced cables using TRS or XLR connectors Try plugging loudspeakers and the external mixer into outlets that share a common ground If necessary use an extension cord to plug the external mixer into the same outlet as the loudspeaker but do not run the AC cord bundled with signal cables PreSonus s warranty obligations for this hardware product are limited to the terms set forth below How Consumer Law Relates To This Warranty THIS WARRAN
59. tudioLive Al Series Loudspeaker 4 2 Delay Systems Owner s Manual 2M Select this setting when the subwoofer is about two meters from the full range loudspeaker typical when the full range system is on the stage and the subwoofer is on the floor A delay of about 5 9 ms is introduced to the signal that is output through the subwoofer amplifier The Alignment delay setting compensates for the cancellation or reinforcement of low frequencies when the same frequencies are reproduced by two sound sources that are set some distance apart Low frequencies in the crossover region between full range and subwoofer have wavelengths that are several feet long the wavelength of a 150 Hz wave is about 7 5 ft which means that reinforcement and cancellation will occur as the waves interact in the room The Alignment delay provides compensation for this effect when the loudspeaker is about the same distance away from or in front of the subwoofer as specified in the setting As room acoustics will influence effectiveness we recommend listening tests using the different Alignment settings in conjunction with alternate Polarity settings to determine the best results If you are aligning for a custom installation or the subs must be located some distance from the main speakers you will need to do some calculating AD Overlap Area Find the spot in the room where coverage from the main speakers and the subwoofers overlap Measure the dis
60. ubwoofer only either input may be used If you are using two 18sAl subwoofers and running your system in stereo connect the Left side to Input 1 of the left 18sAl and the Right side to Input 1 of the right 18sAl Outputs Two line level outputs 1 and 2 are provided to pass the stereo signal from the subwoofer to full range StudioLive Al series loudspeakers The outputs are parallel to Inputs 1 and 2 respectively For more information on connecting multiple loudspeaker systems see the hookup diagrams in Sections 3 5 through 3 8 Mono Switch The Mono switch sums Inputs 1 and 2 and patches the summed signal to Outputs 1 and 2 This feature is especially useful when running stereo full range systems with multiple mono subwoofers Sub Level The Sub level knob determines the output level volume of the subwoofer power amplifier It has no effect on the signal level from Outputs 1 and 2 You can adjust the speaker level from 12 dB to 12 dB Signal level sent to the subwoofer outputs is not affected by the Sub level control Power User Tip A subwoofer can significantly change the frequency response of a full range system A 4 way system with a subwoofer will be 6 to 18 dB hotter below 80 to 100 Hz Set the appropriate level for your subwoofer before adjusting your system EQ When used with a StudioLive mixer and StudioLive Al series full range loudspeakers the Sub level knob can typically be set to 0 dB DSP Contours Your 18sAl Su
61. useful in situations where there is an SPL ordinance in effect or where your audience and your front of house engineer have different opinions about how loud a performance should be DSP Contours Your StudioLive Al series loudspeaker is equipped with three DSP contour presets These contours change the character of your StudioLive loudspeaker in a fundamental way adjusting FIR filters alignment and crossover settings to customize your loudspeaker for one of three applications e Normal Normal mode sets dynamics and equalization for optimum performance for live music This mode is suitable for use with PreSonus StudioLive consoles and most other mixing consoles e LBR Source Al series loudspeakers are designed to provide high resolution accurate reproduction of high quality recordings and live mixes When low bit rate MP3s are played the unusual clarity of Al speakers may reveal the artifacts of MP3 compression to an unflattering degree The LBR Source contour is specifically designed to reduce the audibility of these artifacts e Floor Monitor Floor mode sets dynamics and equalization for optimum results when the loudspeaker is used as a floor monitor Because these contours are changing fundamental tuning parameters your StudioLive Al series loudspeaker will mute momentarily while the new parameters load Because of this do not change the DSP contour once your performance has begun Press the recessed button below the User LED
62. y relative to the main system again delaying each side of the system independently 4 2 4 System Configuration Suggestions The following subsections will demonstrate some system configurations for common rooms The size and shape of your room and the application for which it will be used determine to a large extent how many speakers you will need and where they should be placed In every situation keep in mind two important design factors your loudspeaker s coverage pattern and half space loading Every full range StudioLive Al loudspeaker offers a 90 horizontal x 60 vertical coverage pattern Be sure to pay close attention to these angles when using your speakers Rotating the cabinet changes the horizontal and vertical coverage When configured for stereo use make sure the cabinets are not placed too wide for the room or too far back into the corners Too wide of a placement will direct too much energy onto the walls and can potentially add destructive interference to the room Adjust the left and right speakers as well as the toe in angle to produce the best stereo image If a room is very narrow a mono cluster might be a better choice than stereo Wherever you place your loudspeakers you should be aware of half space loading Half space loading occurs when a speaker comes in close contact with or touches a hard surface like a floor or wall As its name indicates this type of summation happens when the circular radiation of
63. y systems offer support by extending the intelligible range of the PA Rather than relying on a pair of front of house speakers to fill the entire room you can create listening zones throughout the room so that your front of house system only needs to be loud enough to cover the front of the room This allows you to lower the level give the front row listeners ears a break and get better fidelity from your speakers However it s not as easy as just bringing an extra pair of speakers Since electricity travels much faster than sound listeners in the rear of the room are likely to hear the sound coming from the nearest set of speakers before they hear the sound from stage which can dampen the attack and intelligibility ofthe sound and create an unpleasant phasing effect To compensate you need to delay the signal going to the additional speakers For example it takes about 55 ms for sound to travel 50 feet So if you put your speakers 50 feet back you need to delay the signal by that much Fortunately with StudioLive Al series loudspeakers and SL Room Control you can delay each speaker by up to 300 ms All you need is a reasonably accurate measurement of the distance between your main speakers and delays 22 4 4 2 4 2 1 System Configuration StudioLive Al Series Loudspeaker Delay Systems Delay Basics Owner s Manual Delay speakers allow you to run the main speakers at a lower volume as they relieve the mains of

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PreSonus StudioLive 312AI