Thanks for the feedback. I got the same info from Scott at Outlaw CS. I followed up with Parasound and found out that there's no whine from the HCA-1500A because it's protection circuit kicks in on power down and so the capacitor drain never makes it out to the speakers.

I actually have moved back to a simple bi-wired configuration from a single channel on the 750. That leaves me enough channels to move to 7.1 later this year.


Quote:
Originally posted by felthove:
I'm biamping some Paradigm Reference 100's (and using the 5th channel for my center channel). I think the whining sound is the saved up power coming coming out of the capacitors. You'll notice that the music keeps playing briefly after the power is turned off, then gets distorted, then turns to whining, then ceases. It is merely the power reserves draining. My other amps do it too.





[This message has been edited by palmer (edited August 18, 2003).]
_________________________
Outlaw 976, Outlaw 7700, Pro-Ject Phono Box S
Sonus Faber Domus Grand Piano (F&C), Niles HDFX (Surr. & Rear Surr.), Outlaw LFM-1 Plus, Velodyne SMS-1
Sonos multi room audio
Video: Sony KDL-46V2500, OPPO BDP-103, TiVo Premiere XL4
2-channel: Outlaw RR2150, SF Concerto Home, Outlaw LFM-2