Setting up 2 power amplifiers to setup at once help?


Hey guys I’m using a pair of Polk rti a7s with a Denon Poa 2800 amplifier and Denon receiver 2801. I just bought another power yamha PC2002M power amplifier which has a little more kick then the denon 2800. But I will be giving the denon 2800 to my dad when he gets back from his trip. I just want to know is it possible to hook up the 2 power amps to my setup at once ? And is it worth will I see a big difference in sound quality and performance ? I’m just curious and want to do a bit of experimenting only if it’s possible? Don’t want to risk blowing anything up. Thanks guys

Tony
daoki
I took a look at the manuals for the two amps in question, which can be found at hifiengine.com if one is registered there, and I calculated their gains based on their specified sensitivities and power ratings. In this particular case it happens that the gains of the two amps are almost equal, assuming the specs are accurate.

To be precise, the Denon’s calculated gain is 32.0 db, and the Yamaha’s is 31.24 db. Also, the Yamaha has input level controls, providing up to 20 db of attenuation in 1 db steps, and the Denon **might** also have input level controls. Input level controls on the Denon are "only provided for versions other than USA Canada and multi-voltage versions."

Finally, I took a look at the manual for the speakers and it confirms that they are suitable for biamping (when the jumpers are removed, of course), meaning that the low frequency and high frequency sections are not interconnected internally.

Regards,
-- Al
Might consider using the 2801 to power the highs for your speakers and the 'sub' out from the 2801 into the Yamaha to power the lows. 

Make sure there is no bridge between the speaker inputs. 
If you can dial in the crossover freq. start at lowest and move up to level that works. If not available set front speakers to "small" (which I would do anyway). 
Wow. A lot of things to consider. Appreciate all user comments and feedback. Probably going to do a bit more further reading and research before I attempt anything just to make sure I take every step with precaution and th advice you guys have given me. So it can be done without and active cross over? And unidentical amps. Considering that @almarg has mentioned that the gains are almost identical ?