Using older receivers with full discrete amps as amps with my Denon X4300H for driving 7.1.4

[Verdinut]

Passive bi-amping is not a 3dB advantage as that would take a doubling of power....which passive bi-amping is not.

With two similar amps connected, one to the mid-high frequency connector and the other to the woofer connector, you increase the total available amp power by 3 dB, no?

 

[lovinthehd]

With two similar amps connected, one to the mid-high frequency connector and the other to the woofer connector, you increase the total available amp power by 3 dB, no?

Not really. You make available equal amounts of power to the two terminals, but the drivers are limited in what they can use, but it's not additive. I believe 1dB advantage has been mentioned as possible under some circumstances.

 

[Kleinst]

So you are saying you had to increase the levels +12 or so to get back to the SPL you were at with the Denon alone?

Assuming has to do with either the pre out voltage of the denon and/ or the input gain of the AMP?

I've noticed this with different AMPs I have. My Outlaw/ATI AMPs give me the best results so far in this regard. I guess it doesn't mean like there is another wrong with boosting the levels to get back to the same SPL at a relative volume #. But psychologically it is defeating after buying an AMP that you have to work so hard to get back to the same loudness (if this makes any sense)

 

[Verdinut]

Not really. You make available equal amounts of power to the two terminals, but the drivers are limited in what they can use, but it's not additive. I believe 1dB advantage has been mentioned as possible under some circumstances.

Yeah! 1.5 dB per channel which doesn't have to be used to drive the alternate lug terminal, but it can vary. That's why it's not worth the trouble.

 

[lovinthehd]

Yeah! 1.5 dB per channel which doesn't have to be used to drive the alternate lug terminal, but it can vary. That's why it's not worth the trouble.

I'd think 1.5 is very optimistic/circumstance specific. Even then doesn't make it particularly audible. Certainly not worth the trouble or extra amp.

 

[i_max]

You were referring to passive bi-amping which doesn't give any advantage except a gain of only 3 dB.. Someone is better off by using a more powerful amp if the current one is struggling to drive a loudspeaker.

Passive bi-amping is not a 3dB advantage as that would take a doubling of power....which passive bi-amping is not.

I wasn’t getting any output from my center channel, I immediately assumed since the center channel is mono, I’m doing something wrong. So I searched on how to use an amp with center channel and I got there. Right after you replied I realized my mistake, my input was incorrectly set on the Yamaha. I fixed that and it’s workin fine now.

 

[lovinthehd]

I wasn’t getting any output from my center channel, I immediately assumed since the center channel is mono, I’m doing something wrong. So I searched on how to use an amp with center channel and I got there. Right after you replied I realized my mistake, my input was incorrectly set on the Yamaha. I fixed that and it’s workin fine now.

Your post and the quotes don't really match up, tho....if you just want to tag someone in a post use the @ sign followed immediately by their site name.

 

[i_max]

I did end up raising the gain to about 4 o clock to get at -1.5 and 0 when calibrating in Audessey, the setup does seem to be working well at the moment.