Onkyo TX-SR606 and BOSE Acoustimas Speakers

The 606 is actually rated at 90wpc 20-20k. Actual real world all channels driven will probably be half that.

The speaker power handling rating is their mechanical/thermal failure peak threshhold over a sustained time frame. The 606 does not output a set amount of power based on its power spec. Most of the time you will be outputting 10wpc or less. Dynamic peaks from the source material (movies/music) determines how much power is output. Volume control/level trim/attenuation all contribute.

If the source asks for 200watts, the receiver will go into clipping and output lots of distortion. The good side is these peaks are very short. The bad side is even short bursts can be damaging.

The 606 will be fine to drive the AM10. I would however consider selling the AM10 in the near future, as they have great resale value, but very poor sound quality.

In regards to pricing, the 606 should be below $500 US. Street prices can be considerably lower.

For the TV, all source material is scaled to its native resolution. 1080i material will be scaled to whatever the tv resolution is, as well as deinterlaced. If they native resolution is 1080p, everything is scaled to 1080p. 1080i in this case would ONLY need to be deinterlaced. Scaling to the native resolution doesn't mean the quality is improved significantly. ALl tv scalers are not created equal. Also, the original source is the determining factor in quality. Native 1080p will always be significantly better than scaled 480p to1080p, or similiar. Some video processors do a superb job at upscaling and deinterlacing, though.

Good answer.

I've got the 606 and AM10 as well. My concern is the ohm rating. The AM10 is 4ohm and the 606 is 6ohm. Is there something I need to buy to bring the AM10 to 6ohm? What's the risk/detriment of running 4ohm speakers with a 6ohm amp?

Thanks in advance for the advice.