How do you BiAmp??

[sts9fan]

do you have to use an external x-over?
So there is one interconnect per channel out of a pre amp so how do I put four to my speakers? I understand that if I remove the jumper it does nothing to the x-over so a full signal can go into both jacks but how do you get two signals/side?

 

[gcmarshall]

using the left preout jack on your preamp/receiver as an example, i believe you use a y-splitter to split the outgoing signal to two amplifiers that will be used to drive the left speaker. Remove the jumpers on your speakers prior to doing this. As for the high/low frequencies, some (or all?) bi-ampable speakers have internal filters to ensure the correct frequency goes to the correct cone.

that is my understanding, but someone else may correct me.

 

[Reorx]

yup. thats pretty much what I did.

 

[gcmarshall]

related question --

if one uses the preout jacks on a receiver with preouts (again let's use the left channel as an example), is the left "speaker-out" terminal (red/black) on that same receiver still active? in other words, if i run an RCA cable from my left preout jack to an external amp, can i also then run a speaker cable from my receiver's (the same receiver) left speaker terminal to the left speaker, thereby using the external amp and the receivers left speaker (internal) amp to bi-amp the speaker? or, is the speaker-out terminal (the speaker binding posts) on the receiver necessarily inoperative when the pre-out jacks are in use?

and, is it correct to assume that one should ideally use identical amps to bi-amp a given speaker? it seems that it might produce inconsistent performance to use different amps (and certainly amps rated differently for power output) to bi-amp a single speaker.

 

[Reorx]

I remember this question from like 4 months ago. I thought it odd, but didnt really feel like testing it out myself.

The answer was yes. When using the pre-outs, the powered outs are still active. At least I believe, on the Yamaha receivers.

 

[Duffinator]

The answer was yes. When using the pre-outs, the powered outs are still active. At least I believe, on the Yamaha receivers.

That's correct and it's the same way on my Denon. I use the 6th and 7th channel in a 5.1 setup to bi-amp my front speakers. It didn't make a huge difference but it didn't hurt either. Read the bi-amp section from the Audioholics review of the Denon 3805 for more information. Good luck with your experiment.

 

[AVRat]

Identical amps are not always the best solution. If the sensitivity and impedance of both sections are identical then they will work. Otherwise it’s best to do a thorough evaluation of the speaker to determine proper power distribution requirements to maintain speaker SPL balance between the sections as a starting point. It is also suggested that one or both amps have adjustable gain control to aid with SPL balance. Two examples:

Polk Rti-12: Woofer section requires almost twice the power of the upper section for proper balance.

RBH 1266-SE: The upper section requires 3-4 times the power needed for the woofer.

 

[TopshelfPro]

related question --

if one uses the preout jacks on a receiver with preouts (again let's use the left channel as an example), is the left "speaker-out" terminal (red/black) on that same receiver still active?

GC,

My old Pioneer use to disable the receiver's amp when you used the pre-outs, don't know if they still work that way anymore, but your pre-out sections in your manual should give you the straight.

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