Bi- amping

bassaholic

How do I do it? My Denon 3805 has seperate amps for different "zones" that I am not using so Id like to add additional power to my fronts. How do i make these connections? If possible please be specific. Thanks, Steve

John K.

Steve, you may have misunderstood that feature of your 3805. There are only seven amp channels available and your list of speakers indicates that you're already using all seven(two mains, center, two side surrounds and two back surrounds). If you weren't using the two back surround channels the 3805 has a procedure for using them in a passive bi-amping setup of the front speakers, but as has been discussed here before, that doesn't increase the power available; the same power is still available to each section of the speaker(not double the power)since there's only one power supply section in the receiver and there's no way for one amp channel to "borrow" extra power from the other one. Relax and enjoy; you have a fine setup.

Eric W

Well you can bi-amp using that receiver for bi-amp capable speakers. However, if you have RT2000i's though, those speakers are already biamped (internal powered sub) and you cannot readily biamplify them.

In terms of biamping in general, you will need to purchase another power amplifier. You would run the receiver's front L and R speaker outputs to the "high" inputs of your biampable speakers. Then you would run some RCA cables from the front L and R "preamp out" to an external power amplifier, that will power the bass section. It is important to get an external amp with volume controls on it, as the sound will most likely be very bright or very dull sounding as the new amp is unlikely to be perfectly level matched to the Denon's internal amp.