REFERENCE AMPLIFIER A500
Contents
1. ccccccccccsscccsssccsssccscsccsssccsesesees 4 3 2 Mono bridged mode 4 Installation soccccccsssssosesecssnsscssssesessssnssorseses sensdueseesees Z 4 1 Installation in a rack 4 2 CONNECTIONS cssscssssssssssssssssccssssssnssssssssssssssssessesssssusscssesssssnuscscessesese 4 3 Audio CONNECTIONS cccssssssssssssssssssssseesssssssssssssssssssesssssseessssessees 7 5 Specifications sssssssssssssisssssssssssssssssssssssssss sss sssssssssss D Limited Warranty ss ascsssssecsosssssvsosousssevssisesovsevouasvseioneess 10 Legal Disclaimer sssssossossssoseosossosossoss PAR 11 ENGLISH Important Safety Instructions CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIGUE NE PAS OUVRIR Terminals marked with this symbol carry electrical current of sufficient magnitude to constitute risk of electric shock Use only high quality commercially available speaker cables with 1 4 TS plugs pre installed All other installation or modification should be performed only by qualified personnel A This symbol wherever it appears alerts you to the presence of uninsulated dangerous voltage inside the enclosure voltage that may be sufficient to constitute a risk of shock A This symbol wherever it appears alerts you to important operating and maintenance instructions in the accompanying literature Please read the manual A Caution To reduce the risk of electric shock2. User Manual ie Thank you By purchasing an A500 you have obtained a high end reference amplifier It was developed for professional use in recording studios but at the same time it offers enough power reserves to be used in smaller live setups as well Its rich list of features will make it a dependable part of your equipment with a broad spectrum of possible uses The A500 features special circuitry that protects your speakers from transients during start up and your amp from overheating The amp is not put at any risk even if there is a short on its outputs Various operating modes such as parallel and mono mode open up different possibilities for effective implementation with the rest of your audio equipment leaving little to be desired This manual is available in English German French Spanish Italian Russian Polish Dutch Finnish Swedish Danish Portuguese Greek Japanese and Chinese There may also be more current versions of this document Download them by going to the appropriate product page at www behringer com A50 00000 03753 REFERENCE AMPLIFIER A500 Table of Contents THANK YOU sciasessceceseossasescsasesesasssesosassosass scseceesecnsvereseeres 1 Important Safety Instructions cccsccccsssessseseeee 2 1 Introduction cccccseeee Sessa 3 1 1 Before you get started s ssssssssssssesessssessesessssesesseseseesesossesessese 3 2 Control Elements
3. to avoid the possibility of electric shock When running the amp in mono bridged mode always use the middle two binding post connectors paying attention to correct polarity ATTENTION If you notice bare cable endings on the binding post connectors disconnect the AC mains and remedy the improper output connection before powering the amplifier on again Connecting to the mains Always connect your power amplifier to the voltage specified on the rear of the unit Connecting the amp to incorrect voltage can permanently damage it also see ch 2 under _11_ FUSE SWITCH VOLTAGE SELECTION Before powering up the amplifier double check all connections and fully lower the gain settings 4 3 Audio connections Various cables are needed for different types of applications The following illustrations show the correct wiring Always use high grade cables input ground shield hot ve cold ve WNE ou tl output For unbalanced use pin 1 and pin 3 have to be bridged Balanced use with XLR connectors Fig 4 1 XLR connections Strain relief clamp __ Sleeve lt __ Sleeve ground shield lt _ __ Tip signal Unbalanced 1 4 TS connector Fig 4 2 4 TS connector lt _ strain relief clamp lt _ sleeve O 4 ring sleeve ground shield lt 4 ring cold ve 4 tip
4. Due to safety considerations the inputs can not be used in parallel However if you are using cinch and XLR or 14 TRS connectors simultaneously the cinch input is given preference and the other signal is muted 0 If you wish to use the A500 in mono bridged mode please only use one of the channel 1 inputs 7 CHANNEL INPUT 2 These are the inputs for channel 2 The STEREO BRIDGED MONO switch is used to toggle between the two operating modes of your A500 Please power the A500 down using the POWER switch each time you change the operating mode Similarly only connect disconnect speaker connectors if the A500 has first been powered off OUTPUT 1 OUTPUT 2 and BRIDGED MONO These are the speaker connectors of your A500 laid out as 14 TS mono connectors When in mono bridged mode only use the BRIDGED MONO output Keep in mind the minimum power impedance of 4 Ohms per channel in stereo mode When in mono bridged mode a loudspeaker whose impedance is at least 8 Ohms must be used In addition to XLR or 1 4 TRS connectors you can also use binding posts for connecting speaker cables When in mono bridged mode make sure to connect your cables to both middle connectors as shown on the unit itself FUSE SWITCH VOLTAGE SELECTION Before connecting the unit to the mains please check if the voltage selector corresponds to your local voltag
5. RMS is present between the output connectors of the A500 Always adhere to all appropriate safety precautions when connecting your speakers to avoid the risk of electric shock Running your amp in mono bridged mode puts both the amp and your loudspeakers under additional strain Excessive overdriving can result in premature shutting down of the unit itself or permanent damage to the speakers Make sure that your speaker impedance at least 8 Ohms and the cables you use can indeed handle the power load fed into through them REFERENCE AMPLIFIER A500 User Manual 4 Installation 4 1 Installation in a rack Your A500 can be installed into a 19 rack and requires two rack spaces Please use four attaching screws and washers for installation Reinforce the back end especially for on the road use Please ensure that enough cool air reaches the rack especially if other rack equipment generates a lot of heat Due to its weight we recommend installing the A500 in the lower portion of your rack If you are installing several amps in a single rack you should leave some space between individual amps approx 1 height unit to allow for sufficient cooling 0 The A500 has massive heat sinks on its side frame that guarantee reliable operation Never block air supply to these heat sinks because excessive heat may damage the components inside your amp Even though the protective circuitry guards the inside components from damage caused by excess
6. The automatic servo function recognizes when unbalanced jacks are connected and internally adjusts the nominal signal level so that no difference in the signal level between inputs and outputs exists 6 dB correction This manual first describes the terminology used so that you fully understand the A500 and its functions Please read the manual carefully and keep it for future reference 1 1 Before you get started 1 1 1 Shipment Your A500 was carefully packed at the factory and the packaging was designed to protect the unit from rough handling Nevertheless we recommend that you carefully examine the packaging and its contents for any signs of physical damage that may have occurred during transit If the unit is damaged please do NOT return it to BEHRINGER Instead notify your dealer and the shipping company immediately Otherwise claims for damage or replacement may not be honored Always use the original packaging to prevent damage during storage or transport 0 Make sure that no children are left unsupervised with the A500 or its packaging Please ensure proper disposal of all packing materials 1 1 2 Initial operation Make sure there is enough space around the unit for cooling To avoid overheating please do not place your amplifier near radiators and other equipment emitting heat Before plugging the unit into a power socket please make sure you have selected the correct voltage The fuse compartment ne
7. be accompanied by a description of the problem and the serial number of the product After verifying the product s warranty eligibility with the original sales receipt BEHRINGER will then issue a Return Materials Authorization RMA number N Subsequently the product must be returned in its original shipping carton gether with the return authorization number to the address indicated by BEHRINGER i Shipments without freight prepaid will not be accepted m 4 Warranty Exclusions This limited warranty does not cover consumable parts including but not limited to fuses and batteries Where applicable BEHRINGER warrants the valves or meters contained in the product to be free from defects in material and workmanship for a period of ninety 90 days from date of purchase REFERENCE AMPLIFIER A500 User Manual 2 This limited warranty does not cover the product if it has been electronically or mechanically modified in any way Ifthe product needs to be modified or adapted in order to comply with applicable technical or safety standards on a national or local level in any country which is not the country for which the product was originally developed and manufactured this modification adaptation shall not be considered a defect in materials or workmanship This limited warranty does not cover any such modification adaptation regardless of whether it was carried out properly or not U
8. do not remove the top cover or the rear section No user serviceable parts inside Refer servicing to qualified personnel A Caution To reduce the risk of fire or electric shock do not expose this appliance to rain and moisture The apparatus shall not be exposed to dripping or splashing liquids and no objects filled with liquids such as vases shall be placed on the apparatus A Caution These service instructions are for use by qualified service personnel only To reduce the risk of electric shock do not perform any servicing other than that contained in the operation instructions Repairs have to be performed by qualified service personnel E Read these instructions m Keep these instructions E Heed all warnings E Follow all instructions E Do not use this apparatus near water REFERENCE AMPLIFIER A500 User Manual 6 Clean only with dry cloth Z Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 8 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not f
9. entitled to give any warranty promise on behalf of BEHRINGER REFERENCE AMPLIFIER A500 User Manual 6 Claim for damage Subject only to the operation of mandatory applicable local laws BEHRINGER shall have no liability to the buyer under this warranty for any consequential or indirect loss or damage of any kind In no event shall the liability of BEHRINGER under this limited warranty exceed the invoiced value of the product 7 Limitation of liability This limited warranty is the complete and exclusive warranty between you and BEHRINGER It supersedes all other written or oral communications related to this product BEHRINGER provides no other warranties for this product 8 Other warranty rights and national law 1 This limited warranty does not exclude or limit the buyer s statutory rights as a consumer in any way 2 The limited warranty regulations mentioned herein are applicable unless they constitute an infringement of applicable mandatory local laws 3 This warranty does not detract from the seller s obligations in regard to any lack of conformity of the product and any hidden defect 9 Amendment Warranty service conditions are subject to change without notice For the latest warranty terms and conditions and additional information regarding BEHRINGER s limited warranty please see complete details online at www behringer com BEHRINGER Macao Commercial Offshore Limited of Rue de Pequim N
10. from the mains When not using the unit for prolonged periods of time please unplug the unit s power cord from the power outlet Your power amp should always be the last device you power up since some equipment in the signal path creates strong impulses which are then amplified in the amp and are passed onto the loudspeakers possibly damaging them Consequently always let your power amp be the first device you power down Each channel features a volume control Use it to adjust gain on your A500 Both volume controls should be turned all the way to the left whenever you power the unit up or down If an active signal is present on the input turning the volume down will protect your speakers and your ears from unwanted pops or transients The PROTLED lights up whenever the protective circuitry mutes the speaker output Please turn your A500 off immediately whenever this LED is lit The protective circuitry is activated if the amp gets too hot Let your A500 cool down a little before you turn it on again Besides check if the heat sink has enough space around it to perform its job The high precision power indicator gives out current signal strength The CLIP LED lights up when the signal is distorted Should distortion occur reduce the input level so that the CLIP LED no longer lights up If the CLIP LED remains being lit check the cable connection to the speakers because there might be a short on the sp
11. hot ve For connection of balanced and unbalanced plugs ring and sleeve have to be bridged at the stereo plug Balanced 1 4 TRS connector Fig 4 3 4 TRS connector REFERENCE AMPLIFIER A500 User Manual Signal Flow Output Device A Tip Sleeve Shield Input A500 Sleeve Fig 4 4 Unbalanced connection using a cinch cable Tip REFERENCE AMPLIFIER A500 User Manual 5 Specifications OUTPUT POWER Power supply Voltage Fuses RMS POWER USA Canada 120V 60 Hz T 10 AH 250V UK Australia 240V 50Hz T 5AH 250V Stereo Mode both channels driven T 230V 50Hz T 5 AH 250V Eea ALLL es Japan 100V 50 60 Hz T 10 AH 250V ania Li Power consumption 660W Bridged Mono Mains connector Standard IEC receptacle 80 1kHz 1 THD 375W ee Dimensions weight PEAK POWER Dimensions HxWxD 482 6 x 257 5 x 101 6 mm Stereo Mode both channels driven is 80 1kHz 175W EN ee 40 1kHz 300W Bridged Mono 80 1kHz 600W Input Sensitivity 1 64V Distortion lt 0 01 Frequency Response 20 Hz 20 kHz 0 1 dB Voltage Gain 26 dB Damping Factor gt 220 80 Input impedance 10 KQ unbalanced 20 k0 balanced Signal to Noise gt 100 dBA Controls Front POWER switch GAIN control channel 1 and 2 Rear MODE switch Indicators POWER Blue LEDs CLIP per channel Red LEDs PROT per channel Yellow LEDs SIGNAL pe
12. interference that may cause undesired operation This manual is available in English German French Spanish Italian Russian Polish Dutch Finnish Swedish Danish Portuguese Greek Japanese and Chinese There may also be more current versions of this document Download them by going to the appropriate product page at www behringer com
13. 72 0816 Fax 1 425 673 7647 hereby declares that the product REFERENCE AMPLIFIER A500 complies with the FCC rules as mentioned in the following paragraph This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur ina particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 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 must accept any interference received including
14. ar the power plug socket contains three triangular markings Two of these triangles are opposite one another The voltage indicated adjacent to these markings is the voltage to which your unit has been set up and can be altered by rotating the fuse compartment by 180 ATTENTION This does not apply to export models that were manufactured only for use with 120 V for example 3 0 Ifyou alter the unit s voltage you must change the fuse accordingly The correct value of the fuse needed can be found in the chapter SPECIFICATIONS Faulty fuses must be replaced with fuses of appropriate rating only The correct value of the fuses needed can be found in the chapter SPECIFICATIONS Power is delivered via the cable enclosed with the unit All required safety precautions have been adhered to Please keep in mind that all your equipment has to be grounded at all times For your own protection never change or disable the grounding on your equipment or on the cables The unit should always be connected to the mains socket outlet with a protective earthing connection ATTENTION High volume levels can damage your hearing and your speakers Please turn down both volume controls to the minimum all the way to the left before you power up the amp Always make sure you use appropriate volume levels 1 1 3 Online registration Please do remember to register your new BEHRINGER equipment right after your purchase by visiting ww
15. e When replacing fuses you should only use fuses of the same type and rating With some units the fuse switch can be put into two different positions in order to select between 230 V and 120V operation Please bear in mind If you wish to use your equipment outside of Europe running on 120 V you will have to use a fuse with a higher Ampere value The mains connection is made via a standard IEC RECEPTACLE A matching cable is enclosed SERIAL NUMBER 6 3 Application Examples 3 1 Stereo mode In this mode both channels run independently with a separate input signal Connect passive loudspeakers preferably high quality studio monitors such as the BEHRINGER TRUTH B2031P Set the STEREO BRIDGED MONO switch _8_ to STEREO to enable stereo mode Please use the POWER switch to power down your A500 before making any changes to the operating mode settings 0 Keepin mind the minimum load impedance of 4 Ohms per channel in stereo mode XENYX 2222FX Ctrl Room out REFERENCE AMPLIFIER A500 Input Stereo Mode Input Channel 2 Passive monitors TRUTH B2031P Fig 3 1 A500 in stereo operation Additional examples e Two independent mono signals e g instrument signal and monitor mix e Bi amp operation with the bass signal on channel 1 and the treble signal on channel 2 3 2 Mono bridged mode In
16. eaker output REFERENCE AMPLIFIER A500 User Manual 2 2 The back 7 Po vER E w y Fig 2 2 Control elements and connections in the back 6 CHANNEL INPUT 1 MONO Connect the signal source whose output needs to be amplified Please use only one of the three input connectors per channel at any one time Here you will connect an output of your mixing console your HiFi preamp or another signal source Our rack mixing console EURORACK PRO RX1602 with its eight mono usable balanced stereo channels is an ideal choice for signal processing and source selection The connections for both channels are laid out as RCA XLR and 1 4 TRS stereo connectors The cinch inputs are intended for use with outputs laid out as unbalanced signals with a 10 dBV line signal level Because these inputs are more sensitive than others you can directly connect a CD player or a DAT recorder Of course this input can also be used for connecting mixing consoles and similar equipment The XLR and 1 4 TRS stereo connectors are laid out balanced but they too can of course be used to connect unbalanced signals Their sensitivity is 4 dBu also see ch 4 Generally speaking you should choose balanced over unbalanced signals in order to guarantee the highest noise protection
17. her condition that is beyond the control of BEHRINGER I Any repair or opening of the unit carried out by unauthorized personnel user included will void the limited warranty 8 Ifan inspection of the product by BEHRINGER shows that the defect in question is not covered by the limited warranty the inspection costs are payable by the customer 9 Products which do not meet the terms of this limited warranty will be repaired exclusively at the buyer s expense BEHRINGER or its authorized service center will inform the buyer of any such circumstance If the buyer fails to submit a written repair order within 6 weeks after notification BEHRINGER will return the unit C 0 D with a separate invoice for freight and packing Such costs will also be invoiced separately when the buyer has sent in a written repair order 9 Authorized BEHRINGER dealers do not sell new products directly in online auctions Purchases made through an online auction are on a buyer beware basis Online auction confirmations or sales receipts are not accepted for warranty verification and BEHRINGER will not repair or replace any product purchased through an online auction 5 Warranty transferability This limited warranty is extended exclusively to the original buyer customer of authorized retail dealer and is not transferable to anyone who may subsequently purchase this product No other person retail dealer etc shall be
18. it into your outlet consult an electrician for replacement of the obsolete outlet fi Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus E Use only attachments accessories specified by the manufacturer fi Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 3 Unplug this apparatus during lightning storms or when unused for long periods of time 4 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 5 The apparatus shall be connected to a MAINS socket outlet with a protective earthing connection fis Where the MAINS plug or an appliance coupler is used as the disconnect device the disconnect device shall remain readily operable REFERENCE AMPLIFIER A500 User Manual 1 Introduction Balanced inputs and outputs Your BEHRINGER A500 features electronically servo balanced inputs exception RCA connectors 6 _ Jand are intended only for unbalanced connections
19. ive internal temperatures you should still double check where the amp is placed and inspect cable connections if you are experiencing thermal protection dropouts 4 2 Connections Inputs If you wish to use XLR connections for unbalanced input signals connect the unused pin on the XLR connector pin 3 with the ground No modification is needed if using mono jacks also see ch 4 3 Should you register distractive signals such as noise or hissing we recommend separating the amp input from the signal source This way you can quickly determine if the noise originates in the equipment connected to the amp Always make sure to completely lower amplification of both channels before powering up the amp GAIN control turned all the way to the left Otherwise permanent damage to your speakers may occur Outputs Your A500 offers several output connection possibilities two 1 4 TS mono connectors and two pairs of touch safe binding posts In addition to both 1 4 TS mono connectors for individual channels the A500 also features an extra 14 connector for use in mono bridged mode Whenever possible use thick and short speaker cables to minimize power losses Never route output cables near input cables When using binding posts make sure that the wire insulation is not stripped more than what is necessary and that wires are completely inserted into the binding post so that no bare wire is visible Cable clamps must be isolated
20. nder the terms of this limited warranty BEHRINGER shall not be held responsible for any cost resulting from such a modification adaptation 3 This limited warranty covers only the product hardware It does not cover technical assistance for hardware or software usage and it does not cover any software products whether or not contained in the product Any such software is provided AS IS unless expressly provided for in any enclosed software limited warranty A This limited warranty is invalid if the factory applied serial number has been tered or removed from the product v 5 Free inspections and maintenance repair work are expressly excluded from this limited warranty in particular if caused by improper handling of the product by the user This also applies to defects caused by normal wear and tear in particular of faders crossfaders potentiometers keys buttons guitar strings illuminants and similar parts 6 Damage defects caused by the following conditions are not covered by this limited warranty e improper handling neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used e damage defects caused by acts of God Nature accident fire flood etc or any ot
21. o 202 A Macau Finance Centre 9 J Macau including all BEHRINGER group companies 11 Legal Disclaimer Technical specifications and appearance are subject to change without notice The information contained herein is correct at the time of printing BEHRINGER accepts no liability for any loss which may be suffered by any person who relies either wholly or in part upon any description photograph or statement contained herein Colors and specifications may vary slightly from product BEHRINGER products are sold through authorized dealers only Distributors and dealers are not agents of BEHRINGER and have absolutely no authority to bind BEHRINGER by any express or implied undertaking or representation This manual is copyrighted No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording of any kind for any purpose without the express written permission of Red Chip Company Ltd ALL RIGHTS RESERVED 2009 Red Chip Company Ltd Trident Chambers Wickhams Cay P O Box 146 Road Town Tortola British Virgin Islands 12 REFERENCE AMPLIFIER A500 User Manual REFERENCE AMPLIFIER A500 User Manual 13 FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE INFORMATION FC BEHRINGER REFERENCE AMPLIFIER A500 Responsible party name BEHRINGER USA Inc Address 18912 North Creek Parkway Suite 200 Bothell WA 98011 USA Phone Fax No Phone 1 425 6
22. r channel 30 dB 6 dB Green LEDs SIGNAL per channel 3 dB 0 dB Yellow LEDs Connectors Inputs Balanced XLR 14 TRS RCA Outputs 14 TS connectors and touch proof binding posts Circuit protection Cooling Convection type Amplifier protection Short circuit and overload Output circuit type Class AB 10 Limited Warranty 1 Warranty This limited warranty is valid only if you purchased the product from a BEHRINGER authorized dealer in the country of purchase A list of authorized dealers can be found on BEHRINGER s website www behringer com under Where to Buy or you can contact the BEHRINGER office closest to you BEHRINGER warrants the mechanical and electronic components of this product to be free of defects in material and workmanship if used under normal operating conditions for a period of one 1 year from the original date of purchase see the Limited Warranty terms in 4 below unless a longer minimum warranty period is mandated by applicable local laws If the product shows any defects within the specified warranty period and that defect is not excluded under 4 BEHRINGER shall at its discretion either replace or repair the product using suitable new or reconditioned product or parts In case BEHRINGER decides to replace the entire product this limited warranty shall apply to the replacement product for the remaining initial warranty period i e one 1 year or otherwise applicable minimum war
23. ranty period from the date of purchase of the original product N 3 Upon validation of the warranty claim the repaired or replacement product will be returned to the user freight prepaid by BEHRINGER A Warranty claims other than those indicated above are expressly excluded PLEASE RETAIN YOUR SALES RECEIPT IT IS YOUR PROOF OF PURCHASE COVERING YOUR LIMITED WARRANTY THIS LIMITED WARRANTY IS VOID WITHOUT SUCH PROOF OF PURCHASE 2 Online registration Please do remember to register your new BEHRINGER equipment right after your purchase at www behringer com under Support and kindly read the terms and conditions of our limited warranty carefully Registering your purchase and equipment with us helps us process your repair claims quicker and more efficiently Thank you for your cooperation 3 Return authorization number To obtain warranty service please contact the retailer from whom the equipment was purchased Should your BEHRINGER dealer not be located in your vicinity you may contact the BEHRINGER distributor for your country listed under Support at www behringer com If your country is not listed please check if your problem can be dealt with by our Online Support which may also be found under Support at www behringer com Alternatively please submit an online warranty claim at www behringer com BEFORE returning the product All inquiries must
24. this mode the voltages of both channels are added up and routed to just one loudspeaker This results in a doubling of voltage quadrupling of the peak power value and roughly trippling of the continuous power output on a single channel The input and the gain control on channel 1 are used in mono bridged mode The channel 2 control REFERENCE AMPLIFIER A500 User Manual elements are not used ATTENTION To avoid cancellations due to internal phase inversion the GAIN control on channel 2 must be turned all the way to the left Use this operating mode to feed the output of both channels into a single 4 Ohm load Set the STEREO BRIDGED MONO switch _8_ to BRIDGED MONO Please only connect the speaker using the BRIDGED MONO connector _9_ or by using both of the middle binding posts _10_ Always power the A500 down using the POWER switch whenever you make any changes to the operating mode settings Keepin mind the minimum load impedance of 8 Ohms in mono bridged mode BASS V AMP PRO is o Input Channel 1 BB410 REFERENCE AMPLIFIER A500 Mono Bridged Mode PSE Fig 3 2 Mono bridged operation If your amp is overdriving for a longer period of time it may become muted for several seconds at a time Always select appropriate volume values to avoid overdriving Safety precautions for mono bridged operation A voltage of up to 60 V
25. w behringer com alternatively www behringer de and kindly read the terms and conditions of our warranty carefully Should your BEHRINGER product malfunction our goal is to have it repaired as quickly as possible To arrange for warranty service please contact the retailer from whom the equipment was purchased Should your BEHRINGER dealer not be located in your vicinity you may directly contact one of our subsidiaries Corresponding contact information is included in the original equipment packaging Global Contact Information European Contact Information Should your country not be listed please contact the distributor nearest you A list of distributors can be found in the support area of our website www behringer com support Registering your purchase and equipment with us helps us process your repair claims quicker and more efficiently Thank you for your cooperation 4 2 Control Elements 2 1 The front REFERENCE AMPLIFIER A500 User Manual sts CHANNEL 1 H Paa A eee Pe K A quill adi gy 0 ay REFERENCE AMIPLIFIER A500 Fig 2 1 Control elements in the front The POWER switch is used to power up the A500 The POWER switch should always be in its Off position when you connect the unit to the mains POWER LED lights up as soon as you power up the A500 Please note Merely switching the unit off does not mean that it is fully disconnected
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