I have an Altec 803B horn with an unobtanium compression driver that has a sensitivity of about 108db, and a JBL 2235 driver in an Altec A7 box that is about 96db with the short horn-loading taken into account.
At present I'm using one tube amp to drive both highs and lows with a passive crossover. The horn is padded down using resistors and capacitors.
We are probably going to bi-amp the system using something like a QSC amp for the woofer and a tube amp for the highs. I would then need to compensate for the differnces in the gain of the two amps. How would I do this without changing the impedence at the speaker and to also get the adjustment to be as transparent as possible.