How to connect PA mixer with built-in amp to feedbk dstryr unit?
I've got a YAMAHA EMX5000 amplified mixer (PA system), and a separate Behringer feedback destroyer FBQ2496. I'd like to know how to connect them together so that the feedback destroyer controls sound/feedback of the FOH speakers.
Should I connect from YAMAHA's 'ST-OUT' outputs to the Behringer's input, then from Behringher output back to YAMAHA's 'P.AMP IN' inputs? I just want some confirmation before I try it out, I don't want to cause any damage to the equipment. Thanks!
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NO. It is a powered mixer only - although there is nothing to stop you turning the master volume control down to zero (even so I would still prefer to have speakers connected to ensure that there is no overloading of the output stage).
However you can attach a separate amplifier by using the AMP INSERT socket with a TRS (tip ring sleeve) STEREO jack plug.
This is applicable to the PMP powered mixers regarding an undocumented issue of polarity of speaker connections.
Failure of the "A" side of these units can happen if Speakon to 1/4 inch speaker cables are used and IF the barrel of the 1/4 inch plug becomes grounded. This can happen from careless handling or from intentionally trying to parallel another device from the output which results in a ground being placed on the barrel of the 1/4 inch jack on the "A" side of these mixers. The barrel of a 1/4 inch on the "A" side is the "hot" from the amp.
Upon analyzing the circuitry, these mixers internally invert the audio signal to the "A" side and then the speaker connections reverse the polarity again. Behringer does this to easily allow "bridged" operation of the amplifier.
This creates a hazard that can result in blowing the "A" side amp of these mixers.
If one ONLY uses Speakon connectors everywhere it is NOT a problem, but anytime 1/4 inch plugs are used in the speaker cable system, the hazard exists.
hi, check the power outlet socket to which the amp and mixer is connected. if there is any loose contact in that power socket, this problem can occur. try to use a good surge protector with emi filter for connecting the amp and mixer. ok
Hi, If you have small electronics knowledge this might help you. First fine in each mixer the amplifiers line In if your mixer has two amplifiers then you have four line In. Disconnect this line from your mixer and build a circuit Line out multiflier. You can use op amp for this application this is a simple circuit. You made two input and four outputs. If you are interested i can send you a schematic diagram.
Just try to resolder all component parts in power supply section,maybe there is a loose connection or cold solder joints that causing of abnormal voltage or missing voltage.Also check the resistor for cange value causing the voltage trap.Check also all electrolytic capacitor for leak.
Hope it may help you;;
first of all you must connect as follows. 1-preamp/mixer-------equalizer/reverb unit------amp-----speakers(keep all equalizer control to 0db). 2-check your cables for good connector no touching of any inner wire to chassis of any equipment. 3-go to radio shack and buy(ground-loop isolator). parts code(270-054)-----better to buy two pieces and connect it between your equipment.
Connect either of the XLR DI output of the Behringer directly to a MIC IN channel on the Powerpod using a standard Microphone cable. If you wish to push a stereo sound then connect both(L + R) of the XLR DI outputs from the amp... that's about all you need to do. The only reason you need to use stereo(both XLR Outs) from the Behringer is if you want a full stereo FX output from the amp, otherwise you can get away with 1 connected. You may need to back the gain off for those channels on the power pod. You can get a manual for the Powerpod from here