2. amps-preamps
  3. 1103538881

How to equalize a bi-amplification setup?

Greetings!

Any one experienced in bi-amplification setups with different amplifiers, where output must be equalized?

In my bi-amp setup I use one pre-amplifier connected two different amplifiers, via balanced and unbalanced connection, feeding a pair of 2-ways loudspeakers (Pass Aleph P, Pass Aleph 3 on tweeter and Pass Aleph 0s on woofer).

Problem is the Aleph 0s results in a final higher sound volume (at least +3dB). Theorically I think this should not happen as manual gain of both amplifiers indicate a +20dB gain, altough the Aleph 0s outputs much more current.

How can I "calm down" the bass amp without comprimising the sound quality and without opening the loudspeaker to introduce one attenuation circuit?
sony
drrdiamond
671 posts
 
An easier solution:

Whatever interconnects you are using, contact the company and they can make you a balanced Y splitter so that the output of the amps will be the same. Feeding both amps balanced will probably also give you better sound.

Richard
herman
2,267 posts
 
The Aleph 3 doesn't have balanced inputs
sony OP
22 posts
 
Herman, that's right - only the Aleph 0s has balanced inputs.

Drrdiamond, could I extract the signal of the balanced output of the preamplifier and split it into a balanced and unbalanced connection? (one XLR to one XLR and one RCA)

Another reason for doing so is that I will have more power in the end than attenuating the signal to the bass amplifier.

Cadet1, I must say that my bass section is not a sub-bass one (200Hz), since it will be handling frequencies up to 2.5KHz, so there's a lot of midrange there. Couldn't the eq spoil it a bit?
cadet1
50 posts
 
sony,
Personally, I'd be uneasy about going up that high. In my present system the signal is only EQ'd below 100Hz.Something like EVS attenuators would probably work better for this application,I used to have a pair of these and they work extremely well. Only one series resistor in the signal path and one shunting to ground.
drrdiamond
671 posts
 
Sony,

Unfortunately, no.

Sorry
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