Mackie C300z User's Manual
Contents
1. C300z TWO WAY LOUDSPEAKER USER S MANUAL According to OSHA any exposure in excess of these permissible limits could result in some SAFETY INSTRUCTIONS 1 Read these instructions hearing loss To ensure against potentially oO dangerous exposure to high sound pressure 2 Keep these instructions levels it is recommended that all persons Pa p re ri igh sou U U ing pro 4 Follow all instructions tectors while the equipment is in operation Ear plugs or protectors in the 5 Do not use this apparatus near water ear canals or over the ears must be wom when operating the equipment in order to prevent a permanent hearing loss if exposure is in excess of the 6 Clean only with a dry cloth limits set forth here 7 ul IN au Install in accordance with Duration Per Day Sound Level dBA Typical one In Hours Slow Response Example 8 Do not install near any heat sources such as radiators heat 70 Duo in small club registers stoves or other apparatus including amplifiers that 92 produce heat ie Subway Train 9 Only a attachments accessories specified by the 100 Very loud classical music manutacturer 102 10 Refer all servicing to qualified service personnel Servicing is 05 de Ha sear tare en required he n the apparatus has been damaged in eee 0 25 or less 115 Loudest parts at a rock concert such as liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture a Ea f2. However in most cases these remedies are not possible or practical So what do you do Making the sound system louder generally doesn t work because the reflections become louder too The best approach is to provide as indistinct much direct sound coverage to the audience e Avoid placing loudspeakers against a wall as possible The farther away you are from This too increases the low frequency output the speaker the more prominent will be the though not as much as corner placement reflected sound However if you do need to reinforce the low Use more speakers strategically placed so the frequencies this is a good way to do it P Picany p y are closer to the back of the audience If the e Avoid placing the speakers directly on a hollow distance between the front and back speakers stage floor A hollow stage can resonate at certain is more than about 100 feet you should use a frequencies causing peaks and dips in the fre delay processor to time align the sound Since quency response of the room It s better to place sound travels about 1 foot per millisecond it the loudspeakers on a sturdy table or tripod stands takes about 1 10 of a second to travel 100 feet PROTECTION A protection circuit is built into the C300z to protect the high frequency compression driver from excessive power When the power to the HF driver approaches the maximum the power de livered to the driver is momentarily reduced CAUTION The pro
3. Quick Start section on page 4 to verify that all the volume controls in the system are properly adjusted e Is the signal source working and making union scale Make sure all the connecting cables are in good repair and securely connected at both ends One side is way louder than the other e Are the level controls set the same for both channels on the mixer and amplifier e Check the PAN control on the signal source It may be turned too far to one side If you re us ing a stereo signal source it may be delivering an out of balance stereo signal e Try swapping sides Switch the speaker cables coming from the amplifier at the amplifier end If the other side is louder now the problem is with the amplifier the mixer or the signal source Poor bass performance e Check the polarity of the connections between the amplifier and the loudspeakers You may have your positive and negative connections reversed at one end of one cable It hurts when touch my arm or my leg or even my head e You have a broken finger 8 Bad sound e Js it loud and distorted Follow the procedures described in the Quick Start section to verify that the levels are set properly e Are all the connections secure It s a good idea to periodically clean all electrical connec tions with a non lubricating electrical contact cleaner e Keep practicing Repair Service for the C300z is available at a factory authorized se
4. be repaired unless payment is received for labor materials return freight and insurance Products repaired under warranty will be returned freight prepaid by LOUD Technologies to any location within the boundaries of the USA G LOUD Technologies warrants all repairs performed for 90 days or for the remainder of the warranty period This warranty does not extend to damage resulting from improper installation misuse neglect or abuse or to exterior appearance This warranty is recognized only if the inspection seals and serial number on the unit have not been defaced or removed H LOUD Technologies assumes no responsibility for the quality or timeliness of repairs performed by an authorized service center I This warranty is extended to the original purchaser and to anyone who may subsequently purchase this product within the applicable warranty period A copy of the original sales receipt is required to obtain warranty repairs J This is your sole warranty LOUD Technologies does not authorize any third party including any dealer or sales representative to assume any liability on behalf of LOUD Technologies or to make any warranty for LOUD Technologies Inc K THE WARRANTY GIVEN ON THIS PAGE IS THE SOLE WARRANTY GIVEN BY LOUD TECH NOLOGIES INC AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS AND IMPLIED INCLUD ING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE WARRANTY GIVEN ON THIS PAGE S
5. does not operate normally or has been dropped 14 Rigging Precautions When mounting of suspending Mackie loudspeaker enclosures it is essential that load ratings rigging 11 The entire sound system must be designed in compliance with the techniques and special safety considerations be appropriate current standards and laws regarding electrical systems for the installation Use only the mounting rigging points on the loudspeaker enclosure intended for this purpose The user must determine the load requirements dynamic loading and any other contributing factors affecting the loudspeaker installation 12 When installing and using this apparatus keep in mind the technical specifications indicated in the dedicated section of the manual The user must determine the proper safety factor for specific 13 Exposure to extremely high noise levels may cause permanent applications and the required load rating of the connection hearing loss Individuals vary considerably in susceptibility to to structure Comply with all applicable federal state and local noise induced hearing loss but nearly everyone will lose some regulations hearing if exposed to sufficiently intense noise for a period of time BS ac The lS Government s Occupational Safe and Health Mackie strongly recommends the following rigging system practices Administration OSHA has specified the permissible noise level Documentation Thoroughly document the mounting rigging desig
6. explaining exactly how to duplicate the problem a copy of the sales receipt with price and date showing and your return street address no P O boxes or route numbers please If we cannot duplicate the problem or establish the starting date of your Limited Warranty we may at our option charge for service time 3 Ship the product in its original shipping carton freight prepaid to the authorized service center The address of your closest authorized service center will be given to you by Technical Support IMPORTANT Make sure that the Service Request Number is plainly written on the shipping carton E LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out LOUD Technologies may at our option require proof of the original date of purchase in the form of a dated copy of the original dealer s invoice or sales receipt Final determination of warranty coverage lies solely with LOUD Technologies F Any products returned to one of the LOUD Technologies factory authorized service centers and deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced within thirty days of receipt LOUD Technologies and its authorized service centers may use refurbished parts for repair or replacement of any product Products returned to LOUD Technologies that do not meet the terms of this Warranty will not
7. 0 kHz Vertical Coverage 45 10 2 8 kHz 20 kHz Low Frequency Crossover Type Construction Features 24 dB octave time offset corrected Basic Design Asymmetrical Trapezoidal High Frequency Crossover Type Enclosure Alignment Sixth Order 24 dB octave Material Polypropylene Crossover Frequency 1800 Hz Finish Grey textured finish Handles One on each side one on top Mounting Methods Integrated mounting points M10 Audio Two located on each side top Input Type Speakon style NL4 jack bottom and rear of enclosure 1 4 inch TS phone jack Grille Perforated metal with weather Input Impedance 8 ohms resistant coating Power Handling rms 300 watts Physical Properties music 500 watts Height 26 in 660 mm peak 750 watts Width 15 4 in 390 mm Operating Temperature Range Depth 14 8 in 376 mm 10 C to 45 C Weight 43 Ibs 19 5 kg 14 F to 113 F Options PA A1 forged shoulder eyebolt hardware M10 x 1 5 mm x 20 mm Disclaimer Since we are always striving to make our products better by incorporating new and improved materials components and manufacturing methods we reserve the right to change these specifications at any time without notice Mackie and the Running Man figure are regis tered trademarks of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged 2004 2005 LOUD Technologies Inc All Rights Reserve
8. C design places inductors in se ries with the woofer whose values are markedly lower than conventional designs This reduces the amount of energy that is typically wasted as heat and increases the amount of energy that is transformed into real acoustic power It also incor porates dynamic protection for the compression driver from non linear signals The Cabinet The C300z cabinet was designed to be the strongest molded composite cabinet on the planet This material is as strong as a rhinoceros horn and rigid enough to prevent unwanted vibrations and standing waves in the cabinet It has built in fly points for hanging and a socket in the bottom for mounting on a tripod stand Although it is an exceptional choice for installed sound situations its light weight and durable finish also make it ideal for portable sound system use The asym metrical trapezoidal design of the cabinet also makes it easy to use as a floor wedge for stage monitor applications The C300z offers a portable lightweight solution for a variety of high powered sound rein forcement applications HOOKUP DIAGRAMS Quick Start Make all initial connections 3 Turn on your mixing console or other signal with the power switches OFF source on all equipment Make sure 4 Turn on the amplifier Turn up its volume or all master volume level or gain gain control s as recommended by the manu controls are all the way down facturer 1 Connect the line level
9. HALL BE STRICTLY LIMITED IN DURATION TO TWO YEARS FROM THE DATE OF ORIGINAL PURCHASE FROM AN AUTHORIZED MACKIE DEALER UPON EXPIRATION OF THE APPLICABLE WARRANTY PE RIOD LOUD TECHNOLOGIES INC SHALL HAVE NO FURTHER WARRANTY OBLIGATION OF ANY KIND LOUD TECHNOLOGIES INC SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE MACKIE PRODUCT OR ANY WARRANTY CLAIM Some states do not allow exclusion or limitation of incidental special or consequential damages or a limitation on how long warranties last so some of the above limitations and exclusions may not apply to you This warranty provides specific legal rights and you may have other rights which vary from state to state 11 16220 Wood Red Road NE Woodinville WA 98072 USA US and Canada 800 898 3211 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie com
10. and have a locking fea ture to prevent accidental disconnections Simply line up the tabs on the plug with the jack on the C300z push it in and rotate it 1 4 turn to the right to lock it in place NLA Wiring Pin 1 Cold Pin 1 Hot Pin 2 No Connection Pin 2 No Connection 1 ma r e _ P m be lt COLD 1 HOT RJ 2 0 from 7 AM to 5 PM PST at 1 800 898 3211 After hours visit www mackie com and click Support or email us at techmail mackie com 9 C300z SPECIFICATIONS Safety Features Over Excursion Protection System Specifications Frequency Response 3 dB 55 Hz 18 kHz Second Order High Pass Filter Frequency Range 10 dB Driver Protection 45 Hz 20 kHz Dynamic protection for compression driver Maximum SPL Long term 1m 123 dB Low Frequency Transducer Diameter Voice Coil Diameter Sensitivity 1W 1m Nominal Impedance Power Handling Frequency Range Diaphragm Diameter Exit Throat Diameter Diaphragm Material Sensitivity 1W 1m Nominal Impedance Power Handling Frequency Range Horn Type Transducer Specifications 12 in 300 mm 3 0 in 75 mm 98 dB 8 ohms 300 watts 50 Hz 3000 Hz High Frequency Driver and Horn 1 75 in 44 5 mm 1 in 24 5 mm Titanium 106 dB 8 ohms 150 watts 1000 Hz 20000 Hz Composite Exponential and Conical Mouth Size 12 in 305 mm W x 7 in 178 mm H Horizontal Coverage 90 10 1 kHz 2
11. ber The loudspeaker must be packaged in its original packing box and must have the Service Request Number on the box Once it is repaired we ll ship it back the same way in which it was received This paragraph does not necessarily apply to non wartranty service Note You must have a sales receipt from an Authorized Mackie Dealer to qualify for a warranty repair CARE AND MAINTENANCE Your Mackie loudspeakers will provide many years of reliable service if you follow these simple guidelines e Avoid exposing the loudspeakers to moisture If they are set up outdoors be sure they are under cover if you expect rain e Avoid exposure to extreme cold below freez ing temperatures If you must operate the loudspeakers in a cold environment warm up the voice coils slowly by sending a low level signal through them for about 15 minutes prior to high power operation e Use a slightly damp cloth with a mild soap solution to clean the cabinets Avoid getting moisture into any of the openings of the cab inet particularly where the drivers are located CONNECTIONS The C300z has 1 4 TS and Speakon style IN PUT and THRU connectors The connectors are wired in parallel so use only one of the input connec tors either 1 4 TS or Speakon style INPUT QT amp C300z Connector Panel Normally you would use only one THRU connector but it is possible to use both THRU connectors Keep in mind that all the speakers a
12. d C300z LIMITED WARRANTY Please keep your sales receipt in a safe place A LOUD Technologies Inc warrants all materials workmanship and proper operation of this product for a period of two years from the original date of purchase If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period LOUD Technologies at its option will repair or replace the product This warranty applies only to equipment sold and delivered within the U S by LOUD Technologies Inc or its authorized dealers B Failure to register online or return the product registration card will not void the two year warranty C Service and repairs of Mackie products are to be performed only at a factory authorized facility see D below Unauthorized service repairs or modification will void this warranty To obtain repairs under warranty you must have a copy of your sales receipt from the authorized Mackie dealer where you purchased the product It is necessary to establish purchase date and determine whether your Mackie product is within the warranty period D To obtain factory authorized service 1 Call Mackie Technical Support at 800 898 3211 7 AM to 5 PM Monday through Friday Pacific Time to get a Service Request Number Products returned without a Service Request Number will be refused 2 Pack the product in its original shipping carton Also include a note
13. erful system The active crossover inside the subwoofer splits the full range stereo input signal into two ranges The SWA1501 Stereo Power Mount Amplifier sums the left and right low frequency range and a e 7 Ol i Tn e Line Level plays it through its built iPass Out in amplifier and 15 inch 7 woofer It sends the ste reo high pass range to the LL d C300zs via an external sr power amplifier The C300z can be pole mounted on top of the SWA1501 or 1801 as SWA1501 shown Plays the Low Frequencies 300z BIAMPING WITH A POWERED SUBWOOFER Both Sides PLACEMENT The C300z loudspeakers are designed to sit on the floor a tabletop or to fit on a standard tripod speaker stand They can also be suspended by the rigging points shown at the right also see Rig ging on the next page You can lay the cabinet down on its side and use the C300z as a floor monitor The asymmetrical trapezoidal shape of the cabinet provides a perfect angle for aiming up toward performers from the front of the stage Warning Do not stack speak ers in a column This is to avoid the danger of toppling speakers gt As with any loudspeakers protect them from Top Bottom moisture If you are setting them up outdoors make sure they are under cover if you expect rain e Position the loudspeakers so the h
14. ets are fitted with ten rigging points as shown in the diagram on the previous page These are M10 inserts M10 threaded eye bolts M10 x 1 5 mm x 20 mm are available to fit in these inserts PA A1 Eyebolts WARNING Never attempt to suspend the C300z loudspeak ers by their handles If you want to suspend them use the rigging points only Consult a professional rigger or structural engineer prior to suspending loudspeakers from a structure not intended for that use Always know the working load limit of the structure supporting the loudspeaker array Always make sure that the rigging hardware minimum rating is at least five times the actual load be 2 gt SERVICE INFO Warranty Service Details concerning Warranty Service are spelled out on page 11 of this manual If you think your loudspeaker has a problem please do everything you can to confirm it before calling for service including reading through the following Troubleshooting section Doing so might save you from being deprived of your Mack ie loudspeaker Of all Mackie products returned for service which is hardly any at all many are coded CND Could Not Duplicate which usually means the problem lay somewhere else in the sys tem These may sound obvious to you but here are some things you can check Troubleshooting No sound e Are the level controls on the mixer or am plifier turned all the way down Follow the procedures in the
15. igh frequency drivers are 2 to 4 feet above ear level for the Room Acoustics audience make allowances for a standing The C300z loudspeakers are designed to sound dancing in the aisles audience High fre as neutral as possible that is to reproduce the in quencies are highly directional and tend to be put signal as accurately as possible monitoring the absorbed much easier than lower frequencies audio signal rather than changing it By providing direct line of sight from the Room acoustics play a crucial role in the over loudspeakers to the audience you increase all performance of a sound system However the the overall brightness and intelligibility of the wide high frequency dispersion of the C300z helps sound system to minimize the problems that typically arise e Highly reverberant rooms like many gymna situms and auditoriums are a nightmare for sound system intelligibility Multiple reflec tions off the hard walls ceiling and floor play havoc with the sound Depending on the situation you may be able to take some steps to minimize the reflections such as putting carpeting on the floors closing draperies to cover large glass windows or hanging tapes tries or other materials on the walls to absorb some of the sound 90 Dispersion S up to 20 kHz Here are some other placement tips e Avoid placing loudspeakers in the corners of a room This increases the low frequency output and can cause the sound to be muddy and
16. n with exposures shown in the following chart detailed drawings and parts lits Analysis Have a licensed structural engineer or other qualified profes sional review and approve the mounting tigging design before its implementation Installation Use personnel experienced and qualified for mounting rigging loudspeakers in accordance with and in compliance with all federal state and local regulations DANGER Loudspeakers should be mounted or suspended only by persons with knowledge of the proper hardware and rigging techniques When stacking or pole mounting loudspeakers be sure that they are stabilized and secured from falling over or being accidentally pushed over Failure to follow these precautions may result in damage to the equipment personal injury or death CONTENTS SERVICE INFO mm 8 Warranty Service sn 8 INTRODUCTION sssissssistinisss ctessstasissastsasnanssnnntsveritssnisaavens 3 Troubleshooting mn 8 HOOKUP DIAGRAMS menneeennne 4 a T E E E E 8 Ouk SR en en annee 4 CARE AND MAINTENANCE nes 9 PLACEMENT sisivsvedivssvssrsiesannssssssnstainisitiaviitsinnivinniiiisit 6 CONNECTIONS ennenennennns 9 PROTECTION aa ee annennens 7 C300z SPECIFICATIONS nes 10 PEGGING maman A N 7 C300z LIMITED WARRANTY mens 11 Don t forget to visit our website at www mackie com for more information about this and other Mackie products INTRODUCTION Thank you for choosing Mackie sound rein forcement loudspeakers The C300z is a p
17. o 8 ohms This insures that the amplifier can reproduce peaks that are 6 dB higher than the continuous rms power handling rating before clipping occurs Preventing Loudspeaker Damage Speaking of clipping this is likely the number one cause of damage to loudspeakers Clipping oc curs when the signal at the output of any device in the system not just the amplifier reaches its maximum level The input signal to the device may continue to increase but the output simply stops and is characterized by a flat top ap pearance to the waveform when viewed on an oscilloscope Normal Sine Wave Signal Clipped Sine Wave Signal Clipping interrupts the motion of the trans ducer creating distortion and excessive heat in the driver which can damage it over time Some folks think that if they use a power am plifier whose power rating is below the maximum power handling rating of the loudspeaker then they can t possibly damage the loudspeaker But if the amplifier is driven into clipping even a lower power amplifier can damage the loudspeaker The bottom line is that to prevent damage to the loudspeakers you must have a properly oper ating sound system Proper operation of a sound system includes being aware of the types of audio signals being reproduced controlling the output levels accordingly and operating all the devices in the system so that no clipping occurs within the signal chain RIGGING The C300z cabin
18. ortable two way loudspeaker system specifically designed to complement our PPM Series line of professional powered mix ers They are capable of extremely high sound pressure levels and designed to give you the best performance of any loudspeaker in its class and price range The Transducers The C300z features a 12 inch high power low frequency woofer and a 1 75 inch titanium diaphragm high output compression driver The woofer incorporates technology used in large format touring systems and with a massive precision 3 inch voice coil is virtually inde structible The high frequency compression driver is mounted on a multi cell aperture loaded on a constant directivity horn providing an ultra wide controlled dispersion pattern and precise reproduction of the critical upper mid range and high frequencies The result is an unbelievably smooth off axis response that allows everyone in the audience to experience the same high reso lution audio no matter where they are seated Each driver has been specifically designed by our engineers for optimum performance in a light weight high strength cabinet Please write your serial number here for future reference i e insurance claims tech support return authorization etc pO Purchased at Date of purchase pO Part No 820 188 90 Rev B 3 05 2004 2005 LOUD Technologies Inc All Rights Reserved The Crossover This unique Low Impedance Compensated Crossover LIC
19. outputs from your 5 Start the signal source whether it be speak mixing console or other signal source to the ing into a microphone or starting a CD player inputs of your power amplifier Adjust the volume controls on the mixer or 2 Connect the Speaker Output from your power other signal source for normal operation amplifier or powered mixer to one of the INPUT connectors on the C300z either the 1 4 TS jack or the NLA Speakon style connector POWERED MIXER MAXIMUM NUMBER OF SPEAKERS IN PARALLEL IS 2 PER POWERED MIXER OR AMPLIFIED CHANNEL Stereo Power Amplifier Left Line level Output E Right Line level Output Mixer or Preamplifier o a d 0 GOO D o 33 E it Pennine SBoanepoeoon 260 60 6e C y C300z WITH A MIXER AND POWER AMPLIFIER Spea ker Cable Speaker Cable not a guitar cord not a guitar cordl Left Line level Right Line level Output Mixer or Preamplifier ome C300z WITH A MIXER AND POWER AMPLIFIER AND USING THE THRU JACK C300z C300z The C300z can be used with a Mackie SWA1501 or SWA1801 subwoofer to create an incredibly pow
20. re connected in parallel through these connectors so you want to be sure not to go below the minimum impedance requirement for your amplifier The C300z has a nominal impedance of 8 ohms Two C300zs in parallel equals 4 ohms Three C300zs in parallel equals 2 7 ohms Four C300zs in parallel equals 2 ohms Need Help You can reach a technical support representative Monday through Friday Use heavy gauge stranded wire for connecting a speaker to the output of a power amplifier Do not use coaxial cable like a guitar cord to make speaker connections They are not designed to handle the high currents produced by a power amplifier and can overheat As the distance between the amplifier and speakers increases the thickness of the wire should also increase Speaker wire has resistance and when electricity passes through a resistor power is lost The thicker the wire the less the re sistance it offers and the more power actually gets to the speaker 1 4 TS Phone Plugs and Jacks TS stands for Tip Sleeve the two connec tions available on a mono 1 4 phone jack or plug They are used for unbalanced signals and speaker connections 1 4 TS Wiring Sleeve Cold Ge A Re gt Tip Hot TI l Yv TIP NL4 Type Plugs and Jacks This connector is compatible with the popular Neutrik Speakon 4 pole plugs These con nectors are designed to handle the higher currents produced by amplifiers
21. rvice center Service for Mackie products living outside the United States can be obtained through local dealers or distributors If your Mackie loudspeaker needs service fol low these instructions 1 Review the preceding troubleshooting sugges tions Please 2 Call Tech Support at 1 800 898 3211 7 am to 5 pm PST to explain the problem and obtain a Service Request Number Have your speaker s serial number ready You must have a Service Request Number before you can obtain fac tory authorized service 3 Keep this owner s manual We don t need it to repair the loudspeaker 4 Pack the loudspeaker in its original package including protective wrap endcaps and box This is very important Do not use styrofoam peanuts Mackie is not responsible for any damage that occurs due to non factory pack aging 5 Include a legible note stating your name ship ping address no P O boxes daytime phone number Service Request Number and a detailed description of the problem including how we can duplicate it 6 Write the Service Request Number in BIG PRINT on top of the box Products sent to us without the Service Request Number will be refused 7 Tech Support will tell you where to ship the loudspeaker for repair We suggest insurance for all forms of cartage 8 We ll try to fix the loudspeaker within three to five business days Ask Tech Support for the latest turnaround times when you call for your Service Request Num
22. tection circuit is designed to protect the HF driver under reasonable and sensible conditions Should you choose to ignore the warn ing signs i e frequent clip LED indications excessive distortion you can still damage the speakers in the C300z by over driving them past their recommended amplifier power handling ratings or past the point of am plifier clipping Such damage is beyond the scope of the warranty z 2 3 gt Amplifier Power We give you three power handling numbers for the C300z rms continuous music and peak So how much power do you really need to drive the C300z The answer to that question depends on what type of program material you are running through the system and how loud it needs to be Some audio signals have lots of momentary peaks whose amplitudes extend far above the average overall level of the program Percussion in struments are a good example of this Other types of signals like highly compressed rock music have a higher average signal level with fewer peaks Speech reinforcement requires less power overall but involves large moment to moment variations in level Assuming you want to use the full capability of the loudspeaker and the program contains at least some momentary peaks we recommend that you use an amplifier that is rated at twice the con tinuous power rating of the loudspeaker into 8 ohms For the C300z this would be 300 watts x 2 600 watts per channel int
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