Amp advice

[AcuDefTechGuy]

I thought about that (your point 1) above) but ruled that out because speaker level should affect both the internal amp's L/R channels the same. In other words, if he increases the L/R channel levels by 5 dB to make the Adcom louder, then the AVR's internal L/R channel amp will still be 5 dB louder than using the front L/R preouts to drive the Adcom power amp as they will both go up 5 dB.

Yes, increasing the Speaker Channel Levels on the Denon would Increase the volume of everything hooked up to it.

I think the OP's is concerned about having to turn the Denon volume knob WAY up to "3/4" max volume when he hooks up the Adcom amp. I think his goal is to hook up the amp to the Denon and not have to turn the Master Volume Knob way up. For example, being able to set the Master Volume to only -25.0.

So all he has to do is increase the Speaker Channel Levels on the Denon. For example to +6.0dB. Then he would only have to set his Denon Master Volume Knob to -25.0, instead of -0.0 or something like that.

I think that's what he is looking for.

I've tried this to see if I could hear speaker hiss noise (SNR). Even at +12.0 Channel Level, my speakers were dead silent.

 

[PENG]

Yes, increasing the Speaker Channel Levels on the Denon would Increase the volume of everything hooked up to it.

I think the OP's is concerned about having to turn the Denon volume knob WAY up to "3/4" max volume when he hooks up the Adcom amp. I think his goal is to hook up the amp to the Denon and not have to turn the Master Volume Knob way up. For example, being able to set the Master Volume to only -25.0.

So all he has to do is increase the Speaker Channel Levels on the Denon. For example to +6.0dB. Then he would only have to set his Denon Master Volume Knob to -25.0, instead of -0.0 or something like that.

I think that's what he is looking for.

I've tried this to see if I could hear speaker hiss noise (SNR). Even at +12.0 Channel Level, my speakers were dead silent.

I thought you were suggesting that as the "cause". I fully agree with what you are suggesting is a "fix", a very simple but effective fix of his issue, and he really needs to do it if he is to keep using the Adcom to drive the front L/R speakers.

By the way, I shouldn't have doubted someone who has more AVRs and amps than me.

 

[AcuDefTechGuy]

...someone who has more AVRs and amps than me.

I have 1 Denon 990, 2 Denon 3310s, 1 Denon 3800BD, 1 Denon 4010UD, 2 Crown XLS2500s, & 1 KEF 201/2 in the closet. So full, it's not even funny.

 

[bowlman]

Thanks for all the advice,this weekend I will try to make some adjustments on my receiver and post back my findings..
I have learned quite alot.

 

[bowlman]

Thanks to all for all the info. I tested a Krell kav250 amp,Adcom 555 amp and a Crown xls 2000 amp.
I had to adjust master volume control up for each amp.What I found was the more power the amp had the better the sound was.
The Adcom had nice bass and highs,the Krell was a little better,and the Crown amp had nice bass and great highs.
My conclusion was, the more power an amp has does not raise the volume level but , enhances the sound. So I just turn up the volume.