Quick question about Denon 4308ci Bi-Amp

[am74Gibson]

I don't want to start any debate about Bi-amp/Bi-wire and whether I should or shouldn't. I just have a simple question.

I have a pair of PSB t55's with dual post, Bi-amp capable. Whe I set my 4308 to Bi-Amp...Does it matter which amp/terminal goes to the woofer and which one goes to the tweeters?

The point is, is there any crossover activity at the AMP? Or does it send an equivelent signal to both?

 

[am74Gibson]

One more question while I an at it...

My speakers are rated at 6-8 ohms....I have read that tweeters have very little resistence and that they can only handle about 20 watts. (maybe true, maybe not) Most AV recievers start having trouble driving anything below 4 ohms. If Bi-amping is separating the tweeter circuit from the woofer circuit and driving it separately, doesn't that change the impedence on the AMP driving to tweeter to something lower than 4 ohms?...which if anything...will allow for more current than the tweeter can handle?

 

[TLS Guy]

My speakers are rated at 6-8 ohms....I have read that tweeters have very little resistence and that they can only handle about 20 watts. (maybe true, maybe not) Most AV recievers start having trouble driving anything below 4 ohms. If Bi-amping is separating the tweeter circuit from the woofer circuit and driving it separately, doesn't that change the impedence on the AMP driving to tweeter to something lower than 4 ohms?...which if anything...will allow for more current than the tweeter can handle?

No, you are passive biamping. You must not use any crossovers in your receiver. Both speaker terminals must receive exactly the same input. The levels must also be identical. The speaker connected to the amp will take what power they want, which for the tweeter will be minute power. The power is so small to the tweeter, the impedance is pretty much irrelevant.

If you don't understand these issues don't biamp. If you understand them you won't want to.

 

[am74Gibson]

Thanks

So I guess the answer to my original question, is...it doesn't matter which terminal to speaker connection I use? Since they should be the same.

I appreciate you opinion on BiAmping, but refrain from asking anymore questions or commenting because of the heated debate it seems to stir.

I will try both ways and draw my own conclusions.

 

[TLS Guy]

So I guess the answer to my original question, is...it doesn't matter which terminal to speaker connection I use? Since they should be the same.

I appreciate you opinion on BiAmping, but refrain from asking anymore questions or commenting because of the heated debate it seems to stir.

I will try both ways and draw my own conclusions.

Just make sure you remove the link straps between the terminals or you will blow up your amps. Yes, both terminals need to receive an identical signal. They did when the connecting straps were in place, and they need to after the straps are rmoved. If you thank taking a minute amount of power off one amp, and have that minute amount of power provided by another amp, is of any possible benefit, then you need a course in applied logic.

This is an issue that can be decided on purely engineering grounds. Remember you can talk yourself into believing anything.

 

[am74Gibson]

Remember you can talk yourself into believing anything.

Point taken ;-)

But then I have to wonder if Denon really spent the money to engineer in something that really does nothing, or rather they just put something in the setup, which really does nothing so you could feel like you are doing something different!

 

[TLS Guy]

Point taken ;-)

But then I have to wonder if Denon really spent the money to engineer in something that really does nothing, or rather they just put something in the setup, which really does nothing so you could feel like you are doing something different!

Well say you had a speaker, that was a three way. And the low pass filter, handed over to the band pass filter at 400 HZ. If when you removed the terminal straps, one set of terminals connected to the low pass filter, and the other to the bandpass and high pass filters, the power between two amps would be evenly divided. Now you would double the power available to the speaker. So it would play 3db louder. If the amps were afflicted by inter modulation distortion, modern amps should not be, then that would be reduced as well.

The problem is, in the range of a tweeter, the power draw is not significant enough to amount to a row beans. Then you just have the chance of sound degradation from errors, such as slightly different gains on the amps, unbalancing the speaker.