Hi All, apologies if this is general knowledge, but I'm damned if I can find it, and Behringer technical help don't know either! I wish to use three EP2500 amps in bridged mono driven by one XLR output.
Can a single crossover output feed the first amp and out to the second one and thence to the third?
The parallel mode and using the TRS 1/4" jacks come to mind, however the manual states on one page that the parallel switches must be 'off' in bridged mode, yet on another states that if they are 'on' then the signal feeds through. I'm not in a position to physically test this with my amps at present and was posting to see what other folks do - I am trying to avoid a distribution amp! Cheers, Carl.
Also apologies if posted in the wrong section - which I believe I have...🙁
Can a single crossover output feed the first amp and out to the second one and thence to the third?
The parallel mode and using the TRS 1/4" jacks come to mind, however the manual states on one page that the parallel switches must be 'off' in bridged mode, yet on another states that if they are 'on' then the signal feeds through. I'm not in a position to physically test this with my amps at present and was posting to see what other folks do - I am trying to avoid a distribution amp! Cheers, Carl.
Also apologies if posted in the wrong section - which I believe I have...🙁
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Bridged mono and parallel mono is not the same !!
Bridged means ~4x power & only one speaker per amp.
Parallel means 2 speakers per amp but they play the same signal. Usually channel A input.
In bridged mono or parallel You usually drive one of the inputs only. The other channel is driven internally in phase (parallel) or anti-phase (Bridged) by the switch circuitry.
You can usually go up to 6 units depending on impedances. 10K amp input impedance for example divided by 6 gives 1600 Ohms. I suppose Your crossover has low impedance in the order of 100 Ohms. So ~10 times lower.
In order to drive three amps You feed the first amp to the XLR and then daisy chain with the other amp via the TRS jack since they are connected in parallel and You have no XLR outputs. So TRS-XLR Cables for the second & third amp.
Thanks for the reply; I fully understand the technicalities of bridged and mono modes - apologies if my wording was ambiguous. According to Behringer the XLR and TRS are not simply connected in parallel (which was my original thought), since the TRS has switched contacts, so I was hoping to find someone here who had actually done this in practice. It looks like a practical test will be the only way to check this.
Thanks for the idea; I try to avoid making things if a 'plug-in' solution is available! I have a distribution amplifier I can use but it's just one more failure point degrading the sound and requires extra wiring between racks at the gig...
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