Ah, I see... I guess that's the price of having new technology during a transition period. That receiver looks to be one of the first Dolby Digital models, when the emphasis on most receivers was still on pseudo-surround "Pro Logic" encoding, so it's not too surprising to find its surround features lacking. I'll bet it would make a great two-channel amp all by itself; it certainly has the specifications and high-dollar pedigree to be one. This is one case where it will be tough to tell how much of an upgrade a separate power amplifier will be, unless your speakers are especially hard to drive.
Anyway, my guess is that the receiver sums the left and right channels and sends them through a low-pass filter with a 200 Hz cut-off frequency and passes unmodified full-range signals to all other speakers no matter what. You'll want to use a SPL meter to check the levels while running a series of low-frequency sine waves. That way, you can adjust your subwoofer's crossover frequency and volume level to match with the mains in order to prevent a dip or bump in the response.
__________________
Team Value-Fi.
Last edited by infinitesymphony; 05-10-2008 at 08:22 AM..
|