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In Reply to: REVIEW: Panasonic SA-XR55 Receiver posted by budget minded on October 13, 2005 at 07:40:39:
My Panny SA-XR55S should arrive today via UPS.I've read the on-line manual, but I still can't figure this out.
In biamp/biwire mode, am I able to set the crossover point for the top speaker AND the bottom speaker, or just the top speaker?
In "dual amp" mode, which amplification channels should be unconnected (so only doing 5.1 not 7.1) in order to shunt additional power to the front 2 speakers.
Follow Ups:
For your first question, I dunno -- I don't bi-wire.For the second question, you don't need to unhook anything to put the "amp" in dual-amp mode. All you need to do is press the "OFF" button on the remote (the Surround off, not power off..;o) At that time, you'll hear a relay click off, and a red LED will light up on the front panel. Now all the "amps" are tied into two channels, your left front and right front. Dual Amp only works in 2-ch stereo.. not in any surround mode.
from what i understand, it is really the same thing as dual stereo. it isn't true biamplification, it's more like biwiring. your speakers will still split the same signals only you'll be wasting treble power on your woofers and vice versus.if you want true biamplification, you'll need an external crossover such as the behringer DCX2496. i bought my SA-XR55 planning on using it to biamplify maggies down the road with a DCX2496.
i don't believe that an extra channel of full range to a speaker would make that much difference. you'd still be feeding the exact same signal to each driver. true biamping lets you dedicate all of an amp's power to each driver instead of wasting 1/2 of it in the spaker's x-over.
from what i can tell, the panasonic "biamp" mode is no different than the "all speaker" mode on my onkyo.
if i were motivated to unhook my biamp input mission M71s up from my PC, struggle with their hideous posts designed for spades only and then run another pair of cables to them from my panny, i could A/B biamp mode, but i'm not too keen on the M71 sound anyways. they do sound alot better on the panny in regular stereo mode than they do on my onkyo though. they have cheesy 1/2" MDF cabinets. my zeros are way less resonant.
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