I have a 9.2 setup with an Onkyo PR
-SC5507 prepro. I would like to bi amp my front speakers as I have spare amps. According to the service manual, I have to give up my rear surrounds in order to bi amp.
Is it possible or beneficial to use a Y balanced XLR cable to split the front signals from the prepro so that each front pre out signal goes to 2 different amps, which in turn will supply a woofer and a tweeter with its own amp?
Or if it is not a good idea to split the front XLR inputs, could I use the front RCA preout for the woofer and the balanced front preout for the tweeter?
I emailed onkyo support who responded as follows but gave no explanation :
We do not recommend that you use any splitters, so the only way possible is as it states in the owner's manual on page 21 that when bi-amping, the AV controller is able to feed up to 7.2 speakers ONLY. (PLEASE SEE BELOW INFORMATION).
From the manual :
The FRONT L/R and SURR BACK L/R outputs can be used with front speakers and surround back speakers, respectively,
or bi-amped to provide separate tweeter and woofer feeds for a pair of front speakers that support bi-amping,
providing improved bass and treble performance.
When bi-amping is used, the AV controller is able to feed up to 7.2 speakers in the main room.
For bi-amping, the FRONT L/R outputs feed the front speakers' woofer terminals. And the SURR BACK L/R
outputs feed the front speakers' tweeter terminals.
Once you've completed the bi-amping connections shown below and turned on the AV controller, you must set
the Speakers Type(Front) setting to Bi-Amp to enable bi-amping (see page 53).
When making the bi-amping connections, be sure to remove the jumper bars that link the speakers'
tweeter (high) and woofer (low) terminals.
Bi-amping can only be used with speakers that support bi-amping. Refer to your speaker manual.
See your multichannel power amplifier's instruction manual for more information on connecting speakers.