Manual - Stanton
Contents
1. _Speakers_ AmpModel _ Amp Mode seo TWoINT252 A10 Sew moles Sew lT Hwonss oo moles oo Braga mnes Bid lT Two INT 182s Two 1188 One or EL 368 Asp Two JE or EL 36B Stereo Two JE or EL 36B One 36 Aio One AB 36B Two AB 368 Stereo TT Two INT 282s Two EL or JE 368 Four 2 per ch INT 152s A 1800 Stereo two INT 152s per channel WARRANTY amp RETURN POLICY Warranty Through Stanton s authorized dealers around the World Stanton or one of Stanton s authorized distributors outside the U S will with out charge repair or replace at the sole discretion of the entity responsible for making the repair or providing the replacement any Stanton merchandise proved defective in material or workmanship for a period of three 3 years following the date of original purchase Stanton will warrant all replacement parts and repairs for ninety 90 days from the date of original shipment Repairs made necessary by reason of misuse alteration normal wear or accident are not covered under this warranty Returns Authorized Stanton dealers are only authorized to sell and distribute merchandise within a specific country All goods requiring warranty repair or replacement must be returned freight prepaid if2. Retain Instructions The safety and operating instructions should be retained for future reference Heed Warnings All warnings on the appliance and in the operating instructions should be adhered to Follow Instructions All operating and use instructions should be followed Water and Moisture The appliance should not be used near water for ple near a bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool and the like Wall or Ceiling Mounting The product should be mounted to a wall or ceiling only as recommended by the manufacturer Heat Appliance should be situated away from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat Power Sources This product should be operated only from the type of power source indicated on the rating label If you are not sure of the type of power sup ply to your home consult your product dealer or local power company For prod ucts intended to operate from battery power or other sources refer the operat ing instructions Grounding or Polarization This product may be equipped with a polarized alter nation current line plug a plug having one blade wider than the other This plug will fit into the power outlet only one way This is a safety feature If you are unable to insert the plug fully into the outlet try reversing the plug
3. If the plug should still fail to fit contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the polarized plug 10 Power Cord Protection Power supply cords should be routed so that they are 11 12 13 14 15 not likely to be walked on pinched by items placed upon or against them ing particular attention to the cord in correspondence of plugs convenience receptacles and the point where they exit from the appliance Cleaning The appliance should be cleaned only as recommended by the man ufacturer Clean by wiping with a cloth slightly damp with water Avoid getting water inside the appliance For AC line powered units Before returning repaired unit to user use an ohm meter to measure from both AC plug blades to all exposed metallic parts The resistance should be more than 100 000 ohms Non use Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings Damage Requiring Service The appliance should be serviced by qualified serv ice personnel when A The power supply cord or the plug has been damaged or B Objects have fallen or liquid has been spilled into the appliance or C The appliance has been exposed to rain or D The appliance does not appear to operate
4. works well with most compact full range speakers Mode Select PARALLEL 4 y gt BRIDGED STEREO Stereo Mode In stereo mode both channels operate independently with individ ual input gain controls Signal at channel 1 s input produces out put at channel 1 while signal at channel 2 s input produces out put at channel 2 s output Recommended minimum nominal load impedance for stereo operation is 2 ohms per channel Parallel Mode When set to Parallel mode a signal applied to channel 1 5 input will be amplified and appear at outputs for both channel 1 amp 2 The parallel mode is well suited for applications in which driving two speakers with the same signal but with separate amplifica tion Bridged Mono Mode Bridged mono mode straps both amplifier channels together to make a very powerful single channel monaural amplifier One channel pushes and the other channel pulls equally doubling the power over that of either channel alone Therefore the voltage is doubled the peak power is quadrupled and program power is roughly three times as high as that of the individual channel Signal is applied to the channel 1 input only and channel 1 input gain control is used to adjust signal level The input gain control belonging to channel 2 are not used Note Bridged mono mode is to be used only when the A Series is connected to a 4 or 8 ohms speaker load Use of Bridged mode with speaker loads of 4 ohms or less c
5. H SAME TYPE FUSE AVIS ATTENTION RISQUE DE UTILISER UN FUSIBLE ELECTRONIQUE DERECHANGE NE PAS OUVRIR MEME TYPE gt SPEAKER OUT min 42 CLASS2 WIRING PARALLEL 4 BRIDGED E CONNECT 2 STEREO EB CONNECT 2 MADE IN CHINA SPK to PIN 1 SPK to PIN 1 Bridged Mono Mode Bridged Mono CONNECT 1 CAUTION RISK OF El IC SHOCK DO NOT OPEN WARNING CAUTION DO NOT EXPOSE FOR CONTINUED PROTECTION THIS EQUIPMENT TO AGAINST RISK OF FIRE REPLACE RAIN OR MOISTURE _ONLY WITH SAME TYPE FUSE AVIS ATTENTION RISQUE DE UTIUSER UN FUSIBLE 5882 emm NE PAS OUVRIR MEME TPE Babes SPEAKER OUT mine CLASS2 WIRING 7 PARALEL E BADGES CONNECT 1 CONNECT 2 2 STEREO 3 BRIDGE 2 SPK to PIN 1 SPK to PIN 2 SPK to PIN 1 SPK to PIN 1 CONNECT 1 1 1 x DO NOT OPEN WARNING CAUTION DONOTEXPOSE FOR CONTINUED PROTECTION THIS EQUIPMENT TO AGAINST RISK OF FIRE REPLACE RAIN OR MOISTURE WITH SAME TYPE FUSE AVIS ATTENTION DE UTIUSER UN FUSIBLE ELECTRONIQUE DE RECHANGE BRIDGE SPEAKER OUT 2 2 CLASS2 WIRING 4 060 2 NE PAS OUVRIR MEME TYPE PARALLEL 4 gt BRIDGED STEREO MADE IN CHINA SPK to PIN 2 SPK to PIN 2 SPK to PIN 1 SPK to PIN 1 CONNECT 1 CAUTION RIS
6. K OF ELECTRIC SHOCI DO NOT OPEN WARNING CAUTION DO NOT EXPOSE FOR CONTINUED PROTECTION THIS EQUIPMENT TO AGAINST RISK OF FIRE REPLACE RAIN OR MOISTURE ONLY WITH SAME TYPE FUSE AVIS ATTENTION NSQUE DE UTSER UN FUSIBLE TLECTRONIQUE DERECHANGE BRIDGE SINE PAS OUVRIR TYPE 59 CLASS2 WIRING 2 60 2 PARALLEL 4 gt BRIDGED E CONNECT 2 STEREO EB MADE In CHINA SPK to 2 SPK to PIN 2 These are several ways to interface the amplifier to support a variety of applications Unbalanced 1 4 Connector Unbalanced 1 4 Connector sleeve tip strain relief clamp ground shield signal sleeve tip 11 Balanced TRS 1 4 Connector front view rear view sleeve tip strain relief clamp ground shield hot sleeve ring r ng cold Aias For connection of balanced and unbalanced plugs ring and sleeve have to be bridged at stereo plug XLR Balanced Wiring Guide input output 1 ground shield 2 hot ve 3 cold ve For unbalanced use pin 1 and pin 3 have to be bridged Rated Output Power 8 ohms 4 ohms 2 ohms Rated Output Power 8 ohms 4 ohms Signal to Noise Ratio 20 Hz 20K Hz Distortion SMPTE IM Input sensitivity 8 ohms Voltage Gain Output Circuitry Current Consumption 1 8 power 4 ohms 1 3 power 4 ohms Rated power 4 ohms Distortion 20 Hz 20k Hz Half Po
7. LATION Although it is neither complicated to install nor difficult to operate your amplifier a few minutes of your time are required to read this manual for a properly wired installation and to become familiar with the unit s features Please take great care in unpacking the unit and do not discard the carton and other packing materials They may be needed when moving the unit and are required if it ever becomes necessary to return the unit for service Never place the unit near a radiator in front of heating vents in direct sunlight in excessive humidity or dusty locations to avoid damages and to guaranty a long reliable use Connect the unit with the system components accord ing to the description on the following pages FEATURES Stanton amplifiers deliver the following power ratings A 900 2 x 210 Watts at 8 ohm 2 x 320 Watts at 4 ohm and 2 x 420 Watts at 2 ohm A 1800 2 x 400 Watts at 8 ohm 2 x 600 Watts at 4 ohm and 2 x 900 Watts at 2 ohm 2800 2 x 600 Watts at 8 ohm 2 x 900 Watts at 4 ohm and 2 x 1400 Watts at 2 ohm 2 channel parallel or bridged mono operating modes for flexible application 900 Watts for A 900 1800 Watts for A 1800 and 2800 Watts for A 2800 Independent limiters for each channel reduce distortion Independent input level controls for each channel allow precision adjustments Precise signal and clip LED indicators to monitor performance allow you to correct for overloadin
8. an result in severe damage to the unit due to excessive heat and current limiting Use extreme caution when operating the amplifier in Bridged Mono Mode Never ground either side of the speaker cable the speaker load must float away from the amplifier chassis CONNECTIONS Stereo Mode 5 Way Outut Binding Posts CAUTION RISK OF El DO SPEAKER OUT CLASS2 WIRING Parallel Mode 5 Way Outut Binding Posts RISK OF ELECTRIC SHOCK DO NOT OPEN SPEAKER OUT CLASS2 WIRING Bridged Mono Mode 5 Way Outut Binding Posts __ _ Bridged Mono CONNECT 1 SPEAKER OUT CLASS2 WIRING IW o0 CONNECT 2 CONNECTIONS Stereo Mode SPK to PIN 1 SPK to PIN 1 CAUTION K OF ELECTRIC SHOCK ae DO NOT OPEN WARNING CAUTION DO NOT EXPOSE FOR CONTINUED PROTECTION THIS EQUIPMENT TO AGAINST RISK OF FIRE REPLACE RAIN OR MOISTURE ONLY WITH SAME TYPE FUSE CONNECT 1 AVIS ATTENTION RISQUE DE UTILISER UN FUSIBLE ELECTRONIQUE DE RECHANGE NE PAS OUVRIR MEME TYPE Pan SPEAKER OUT CLASS2 WIRING PARALLEL 4 gt BRIDGED CONNECT 4 CONNECT 2 STEREO EB ch 2 2 2 SPK to PIN 1 SPK to PIN 1 Parallel Mode SPK to PIN 1 SPK to PIN 1 CONNECT 1 DO NOT OPEN WARNING CAUTION DO NOT EXPOSE FOR CONTINUED PROTECTION THIS EQUIPMENT TO AGAINST RISK OF FIRE REPLACE RAIN OR MOISTURE ONLY WIT
9. arefully in order to locate and correct the condition Clip limiter OFF lt gt Clipping is the result of an amplifier running into power supply lim itation The maximum output voltage that any amplifier can pro duce is limited by its power supply Attempting to output a voltage or current level that exceeds the power supply limit will result in a flattening effect on the signal A clipped waveform exhibits extreme harmonic distortion making it sound harsh or dissonant The clip limiter detects this and reduces the gain to minimize the amount of overdrive To preserve as much of the program dynam ics as possible limiting reduces the average program level until peaks barely clip Each channel has its own clip limiter which can be switched on or off When driving full range speakers clip lim iting reduces high frequency distortion caused by bass overload It also protects higher frequency drivers from excess overdrive and harsh clipping harmonics HPF Hi Pass Filter Also known as a low cut filter a High Pass Filter rolls off signals below 40Hz The reproduction of the signal s bass portion is thus optimized since ultra low distracting frequencies are eliminated and more power is available for the reproduction of the wanted segment of the signal You should set up the filters so they best suit the frequency response of your speakers since some speakers are particularly sensitive to over excursion The 40Hz filter
10. by the negligence of Stanton or otherwise To the extent permitted by law and except as oth erwise provided above Stanton disclaims any express or implied warranties of merchantability or fitness for a particular purpose The above warranty provides you with specific legal rights You may also have additional rights which are subject to variation from state to state and country to country If there is a dispute regarding the warranty of merchandise that does not fall under the warranty conditions stated above please include a written explanation with the merchandise when returned pursuant to the terms and conditions set forth herein Please register your product online at www stantondj com or mail your completed warranty card to Stanton Magnetics Inc 3000 SW 42 St Hollywood Florida 33312 NOTES NOTES siy Ang pip Jequunw JOQUINN 9POIN LONGOUd Hena uoyd j L diz 933 OWEN O3NI 1VNOS I3d Japo UI no pay pes SIU MMM je jonpoud Jajsibaj se jd sseooe jeulajul J NOLIVALSIDIYA ALNVYYVM 5 cut along dotted line Stanton Magnetics Inc P O Box 816667 Hollywood FL 33081 5
11. ches are used to activate the built in High Pass Filter The HPF rolls off signals below 40Hz This improves bass per formance by limiting sub audio cone motion making more power available for the 5 rated frequency range When the filter is turned off a5 Hz roll off protects against DC or deep sub audio inputs 5 Limiter switch When the input signal connected to your amplifier is too high you end up with a distorted output signal To prevent this both chan nels feature a clip limiter that can be engaged or disengaged selectively 6 Bridge Stereo Parallel switch This switch changes the amplifier operating mode between stereo mono bridged and parallel SPEAKER OUT CLASS 2 WIRING f 7 5 way Binding Post Connect each channel of the unit to 4 ohms or 8 ohms loudspeak ers Two pairs of 5 way binding posts are provided for each chan nel so that paralleling of speakers is possible Connection to the binding posts can be made with bare wire banana plugs or spade lug terminations Make connections to both the Channel 1 and Channel 2 terminals for Stereo or Parallel Mode or a single connection across the red terminals only of Channel 1 and Channel 2 for Bridged Mono Mode 8 Speakon output connectors You can use these to connect each channel of the unit to 8 ohms or 4 ohms loudspeakers Using Speakon speaker cables make connections to both the channel 1 and channel 2 c
12. ded protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or cable system This will prevent dam age to the product due to lightning and power line surges Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards Safety Check Upon completion of any service or repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition 23 This product is in compliance with EU WEEE regulations 24 Disposal of end of life product should not be treated as municipal waste Please refer to your local regulations for instructions on proper disposal of this product Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combination to overturn 25 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device mus
13. g clipping condition Low frequency filters 40 Hz remove rumble and subsonic frequencies Twin tunnel and two temperature sensitivity forced air cooling system to maintain a low operating temperature during use Balanced XLR or balanced 1 4 inch TRS Combination input connector for each channel and LINK ports 5 way output binding posts or Speakon connectors enable secure operation High current toroidal transformer for absolute reliability Independent DC and thermal overload protection on each channel automatically protects amplifier and speaker from damage or failure The A Series can be mounted in any standard 19 rack FRONT PANEL CONTROLS O0 O O O_O O OO Oo O O O stanton A 1 Rack Ears These ears are used to mount the amplifier in any standard 19 rack 2 Fan Vent The A Series amplifiers are cooled by two rear mounted fans except for A 900 which is cooled by a single rear mounted fan Cool air flows through the front fan filters reducing the tempera ture internal components while forcing the heat out the rear vents Never block these vents and keep them clean at all time 3 AC Power Switch This switch powers the unit on and off 4 Signal Indicators These blue LED s will illuminate to indicate that a signal is pres ent at the amplifier input and that the signal is being amplified 5 Clip Indicator
14. l Mode both input level control are used to adjust signal level for their respective amplifier channels At their fully counter clockwise position the signal is attenuated by more than 80dB At their fully clockwise position the signal is at unity gain When 0 dBu of signal arrives at the input jacks and the Channel input level controls are set to their fully clockwise position the unit delivers full power output REAR PANEL CONTROLS 1 Fan This is a variable speed cooling fan Cool air enters the amplifier through the fan filters located on the front of the amplifier Be sure not to block these ports when installing the amplifier or other equipment 2 Input connectors Connect the input source to the balanced combo connectors using either XLR or 1 4 TRS plugs They are configured as fol lows Pin 2 Tip hot Pin 3 Ring cold and Pin 1 Sleeve ground We recommend using balanced three conductor cabling wherever possible Unbalanced two conductor 1 4 plugs can also be inserted into these inputs but you will get better signal quality and less outside noise and hum if you use balanced lines Stereo signal should be connected to both the Channel 1 and Channel 2 input jacks When operating the unit in Bridged Mono or Parallel modes use the Channel 1 input jack only 3 Link connectors These jacks are used to send a parallel signal to another device or amplifier 4 High Pass Filter HPF switch These swit
15. n A 1800 000000 PROTECT CLIP 10dB 20dB SIGNAL ACTIVE 000000 0 0 00 000 10 CHANNEL 2 oo 10 CHANNEL 1 Stanton A 2800 cup 10dB 20dB SIGNAL ACTIVE OOOOOO OQOOO0O000000000 0o20 050 05050 O_O O 10 CHANNEL 2 USER MANUAL 0 0_0_0_0 O_O O_O O O O 090000000500000090050 O O E O LLO 0000000000000 O O 0 0 O 0 00 00 00000 E RS 050 0 0 O0 0 O OO O OO 0 0 0 0 0 0 0 0 0 Kor 000000000000000 O O0 0205070 07070 0000000000004 000000000 0 0 0 0 0 0 0 070 O O _ o 0000000 O O OO On OO _ 00 0000 O 00 O O O_O x 000 O 0 0 0 Poo 00 2 0 2 OO O o Read Instructions Allthe safety and operating instructions should be read before this product is operated
16. normally or exhibits a marked change in performance or E The appliance has been dropped or the enclosure is damaged IMPORTANT SAFETY INSTRUCTIONS 16 12 Servicing Do not attempt any service to the appliance beyond that described in the operating instructions All other servicing should be referred to qualified serv ice personnel Ventilation Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is the manufacturer s instructions have been adhered to 18 Attachments do not use attachments not recommended by the product manu facturer as they may cause hazards 19 Accessories Do not place this product on an unstable cart stand tripod brack 20 21 22 et table The product may fall causing serious injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Any mounting of the product should follow the manufacturer s instructions and should use a mounting accessory recommended by the manufacturer Lightning For ad
17. not hand delivered to the authorized Stanton dealer from whom the merchan dise was purchased and in the same country where the merchandise was purchased For purposes of purchases made via the Internet the merchandise must be returned to the authorized Stanton dealer in the country where the authorized Stanton dealer which sold the merchandise to purchaser is located and not the authorized Stanton dealer in the country where the purchaser is located or the country in which the merchandise was received Any returns to a non authorized dealer or to an authorized Stanton dealer not in the same coun try as the merchandise was intended to be sold or as set forth above will void this warranty To initiate a warranty repair you must contact the authorized Stanton dealer from whom you purchased the merchandise and follow such authorized Stanton dealer s return policy Stanton assumes no risk and shall be subject to no liability for damages or loss resulting from the specific use or application made of the merchandise Stanton s liability for any claim whether based on breach of contract negligence infringement of any rights of any party or product liability and relating to the merchandise shall not exceed the price received by Stanton from your purchase of such merchan dise In no event will Stanton be liable for any special incidental or consequential damages including loss of use loss of profit and claims of third parties however caused whether
18. onnectors for Stereo or Parallel Mode or to the Bridged mode connector for Bridged Mono Mode 9 Circuit breaker The breaker acts in place of common disposable fuses This cir cuit breaker will trip if there is a fault with the main voltage or if maximum output is exceeded Simply depress the circuit breaker and power up the unit again 10 AC input IEC connector for AC power cable Connect the supplied heavy gauge 3 pin IEC power cable PROTECTION Every model in the A Series incorporates protection features The front panel Protection LED indicates the activity of the relay speaker connection circuitry in each channel When the protection LED turns on this circuitry is active and all connected speakers are muted Initial power up For approximately five seconds after initial power up the protection circuitry is activated and the speaker outputs are muted If everything is operating normally you will hear an audible click at the conclusion of this brief period as the protection circuitry is deactivated and the unit begins delivering signal to the connected speakers It is normal for the Protection LED to fade gradually after the amplifier is powered off Thermal Protection Abnormally high heat sink temperatures will engage the protection circuitry for the overheating channel only An output relay disconnects the speakers until normal tem perature range is restored The Protect indicator will light to show the protection circui
19. s These red LED s will illuminate at the clipping threshold These lights should not light up during normal use as they indicate sig nal outside of the amplification range of the amplifier When a sig nal is clipped and the clip indicator illuminates it means that the signal is being distorted at the output stage Prolonged clipping can not only damage your amplifier but also your speakers so be careful to monitor the clip indicator during setup and use If the clip indicator is illuminated then simply lower the channel gain or input signal until the indicator does not light O_O O_O O OO 0509090 0 0 0 0 O O X RR 22 6 Active Indicators These blue LED s indicate that AC power is connected and the amplifier is turned on 7 Protect Indicators These red LED s indicate that the channel is in Protect mode When the channel goes into protect mode all output for that chan nel will be muted The protect LED s light when overheating or other severe problems occur This is to protect any speakers con nected to the channel The LED s also light for approximately five seconds whenever the unit is powered on and fade slowly when the amplifier is powered off 8 Channel input level control These two 21 position detented potentiometers adjust input level for their respective amplifier channels In Bridged Mono Mode only channel 1 level control are used to adjust signal level In Paralle
20. stanton A 900 A 1800 A 2800 HEAVY DUTY PROFESSIONAL AMPLIFIERS O_O O 9 0 O 000000000 O O O 0505 O O O O 000 0000 OO O O_O O_O oo o lt O y O O_O O O O O 00000 00000 O O 00000 O O00 20o 06050 00600 00000 _ O x O_O 0 0 0 oo O 00000 0000 009090909090909 2 0 c9 O 0000005 E 0 0 0 0 IL O O_O O_O De O C ia AN O O O 0 000000 10 CHANNEL 1 Stanton A 900 000000 PROTECT 10dB 20d8 SIGNAL ACTIVE 000000 O 0 0 0 0 0 0 0 0 0 0 0 0 0 25202020 10 Oe C CHANNEL 2 O_O 0000 u 10 CHANNEL 1 Stanto
21. t accept any interference received including interference that may cause undesired operation CAUTION To reduce the risk of electric shock do not remove any RISK OF ELECTRIC SHOCK DO NOT OPEN cover No user serviceable parts inside Refer servicing to quali fied service personnel only The lightning flash with arrowhead symbol within the equilateral triangle is intended to alert the user to the presence of un insulated dangerous voltage within the product s enclosure that may be of suf ficient magnitude to constitute a risk of electric shock The exclamation point within the equilateral triangle is intended to alert the user to the presence of important operation and maintenance servicing instructions in the literature accompanying this appli ance CAUTION To prevent electric shock do not use this polarized plug with an extension cord receptacle or other out let unless the blades can be fully inserted to prevent blade exposure INTRODUCTION Thank you for your decision to purchase Stanton s innovative new A Series professional power amplifier Engineered for superior sound reproduction the A Series line of professional amplifiers deliver top quality audio at an affordable price The A Series offer a standard of reliability and efficiency that makes them the perfect solution for every DJ musician and sound engineer Welcome to a new level of pro fessional quality sound performance UNPACKING amp INSTAL
22. t is active To guard against this problem make sure the unit receives adequate ventilation on all sides and that both the front and rear panels are unobstructed If the power transformer gets too hot its thermal switch will disconnect all of the secondary power and disconnect both channel outputs Short circuit If output is shorted due to faulty wiring the ther mal circuitry will automatically protect the amplifier If this occurs the load will be disconnected by thermal protection circuitry DC Voltage Protection If an amplifier channel detects DC volt age at the speaker output the output relay will immediately open to prevent speaker damage Subsonic Frequency Protection The built in High Pass Filter provides subsonic frequency protection for each channel Current limiting Protection At the amplifier s full power limit or clipping point the limiter circuitry will be activated This is indicat ed by illumination of the Clip LED The channel gain is automati cally reduced protecting the speakers from high power Uncontrolled feedback oscillations or improper equipment gain setting may activate this circuitry which is virtually transparent in operation as full signal bandwidth is maintained There is reason to be concerned any time the Protection LED lights up except for initial power up during approximately five seconds If this occurs turn the amplifier off immediately and check all wiring and external equipment c
23. wer 1k Hz Rated Power Frequency Response Damping Factor 400 Hz Input Impedance Input Clipping Cooling Connectors each Input Rear SPECIFICATIONS A 900 A 1800 A 2800 Stereo Both Channel Driven zw 320 420 Bridged Mono sow 545 100dB 102dB 104dB AB 120Vac 240Vac 0 01 0 01 0 03 0 0 5dB 20Hz 20KHz O 3dB 5Hz 60KHz 200 280 350 15Kohm Unbalanced 3 0Kohm Balanced 22dBu 10Vrms Continuously variable speed Front to rear Active balanced combo XLR and 1 4 TRS common use Output 5 way Binding post and Speakon CI power switch Channel 1 and 2 volume HPF switch Limiter switch Mode selector switch Indicators Protection 100v 50 60Hz JP 120V 60Hz U S A amp Canada 240V 50Hz EU Dimensions Dimensions W_H_D H D Net VVeight Active light blue Protection red Clip red Signal dark blue Short circuit Thermal Current limit DC offset Current inrush protection Turn on Turn off muting 19 482mm 3 5 88mm 16 5 420 mm 28 Ib 12 6 kg 40 Ib 18 kg 46 Ib 20 7 kg SPEAKER COMPATIBILITY The A Series of amplifiers are designed to work with many different speakers on the market They have been paired with the following Cerwin Vega speakers The following compatibility matrix can be used as a reference See www cerwin vega com for product specs Amp Compatibility Information with CV Speakers
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