Bi-Wire Experiment - RS6

[ilar]

Hi All,

I did a small change in my biwiring. I made my speaker connections as follows as i read on the web:

The RS6 Right channel speaker connected to both pairs of right channel ports of A & B (PM8003), Left channel speaker to both pairs of left channel ports of A & B (PM8003) and set the amplifier knob to (A+B).

It sounds very different now. Not sure how to explain it since I am not technically clear, but sounds much pleasant even at low volumes. However, I think the balance is a little disturbed. I do not hear the vocals right at the middle as I used to. Has anyone tried this? Is it ok to do this or is it a faulty connection? Please comment.

 

[aashish351]

Right channel on right A B. Left channel on left A B. That is the correct way for stereo. How was it connected before? If you hear vocals from one side in this connection, your song might have so. Have you tried many different songs?

Sent from my Nexus S using Tapatalk 2

 

[aashish351]

I hope you didn't mean- right channel on Left and Right of port A and left channel on L R of port B? That would be wrong for imaging.

Sent from my Nexus S using Tapatalk 2

 

[arj]

if there is a problem of imaging, i would assume that both the Ls /Rs have a slight phase difference amongst them. usually in AVRs the power section is the same hence it might make better sense for you to Biwire by using only 1 terminal ie A or B and use both cables together (being in parallel impedance will be lower) and check if you do see a difference now..either way Imaging will not be impacted.

(I am assuming that your AVR has the same Power section for A and B)

 

[afj]

Hi All,

I did a small change in my biwiring. I made my speaker connections as follows as i read on the web:

The RS6 Right channel speaker connected to both pairs of right channel ports of A & B (PM8003), Left channel speaker to both pairs of left channel ports of A & B (PM8003) and set the amplifier knob to (A+B).

It sounds very different now. Not sure how to explain it since I am not technically clear, but sounds much pleasant even at low volumes. However, I think the balance is a little disturbed. I do not hear the vocals right at the middle as I used to. Has anyone tried this? Is it ok to do this or is it a faulty connection? Please comment.

have been wanting to do this to my nad c272 and rs6 though havent gotten down to it. if i do in the near future will let you know.

ps. hope you've taken out the brass interconnector

 

[Nikhil]

* Deleted post *

 

[ilar]

Nikhil, AFJ, ARJ, and Ashish and everyone else, thanks for your comments/views. Have a nice time!

 

[afj]

Hi ilar
instead of bi-wiring you can also just take the interconnects out and pass the cable through the speaker connectors for the highs and lows. the difference between copper and brass makes a lot of difference

you can also bi-amp your speakers using a+b (i mistook that you were bi-amping)

 

[keith_correa]

ilar you have not bi-wired your speakers. When you connect A+B, you are connecting your speakers in parallel. This means that your combined impedance is half the impedance of a single speaker. If your combined load (in this case half) is below your amp rating then the amp will overheat and/or blow some fuses.

So in what circumstances would the B terminals be used and in those circumstances why wouldn't the amp overheat and/or blow some fuses?

 

[afj]

So in what circumstances would the B terminals be used and in those circumstances why wouldn't the amp overheat and/or blow some fuses?

you can use it to drive another set of speakers or to bi-amp

 

[keith_correa]

you can use it to drive another set of speakers or to bi-amp

Definitely cannot bi-amp with a + b speaker outputs - Bi-amping is a different beast
Yes, it is meant to drive another set of speakers - so why wouldn't the amp smoke in this case?

 

[Nikhil]

So in what circumstances would the B terminals be used and in those circumstances why wouldn't the amp overheat and/or blow some fuses?

Crap! You got me here Keith! Looks like I dived into this topic a little too quick. Connecting the L channels and R channels of an "A+B integrated" to the appropriate HF and LF speaker posts IS bi-wiring!

My apologies to ilar. Editing/deleting my earlier comment.

 

[keith_correa]

Crap! You got me here Keith! Looks like I dived into this topic a little too quick. Connecting the L channels and R channels of an "A+B integrated" to the appropriate HF and LF speaker posts IS bi-wiring!

My apologies to ilar. Editing/deleting my earlier comment.

Actually, I'm not fully convinced that it is OK to do that. I've been searching on whether is it OK to do this and some say it is OK and some say it is not [they say the same as you said about the amp smoking]. But the nay sayers haven't given a plausible explanation on why is is NOT OK to do it which means I still do not know if it is OK to do it. Maybe someone else here can help.

 

[Nikhil]

Actually, I'm not fully convinced that it is OK to do that. I've been searching on whether is it OK to do this and some say it is OK and some say it is not [they say the same as you said about the amp smoking]. But the nay sayers haven't given a plausible explanation on why is is NOT OK to do it which means I still do not know if it is OK to do it. Maybe someone else here can help.

It's ok but it's redundant really speaking (in my opinion). Better to go with higher gauge cables and leave it at that.

In integrated amps, a switch basically "switches" between A, B and A+B speakers but its still the same amp. An impedance matching protection turns off the amp in case impedance goes below what the amp can handle. All the new amps pretty much allow for A+B operation but usually there is a drop off in the sound.

 

[ilar]

Hi Everybody,

But do you all know one thing? After experimenting with this, I am finding the sound more exciting. The highs are more rounded and the lows are more amplified. I am hearing small sounds which I had missed before, even at low volumes.

 

[Nikhil]

Ilar, at the end of the day that's all that counts! hyeah:

.

 

[keith_correa]

Hi Everybody,

But do you all know one thing? After experimenting with this, I am finding the sound more exciting. The highs are more rounded and the lows are more amplified. I am hearing small sounds which I had missed before, even at low volumes.

maybe you can try this - remove the B set of connections at the amp end from and connect it to the A set at the amp end observing polarity of course. Set the amp. to play the A set and see if you get the same effect.

 

[afj]

Definitely cannot bi-amp with a + b speaker outputs - Bi-amping is a different beast
Yes, it is meant to drive another set of speakers - so why wouldn't the amp smoke in this case?

well from a purist point of view you need two amps to bi-amp. some do say you can bi-amp using a surround sound amplifier since each output is powered separately. yes, there's not much point in bi-amping with a stereo with A+B since it divides the power, though some people do suggest it

 

[keith_correa]

I tried this with a friends amp & speakers. The A set of amp outputs for the lows and the B set of amp outputs for the highs. I found better separation. Not a day and night difference but a difference was definitely there.

 

[corElement]

well from a purist point of vew you need two amps to bi-amp. some do say you can bi-amp using a surround sound amplifier since each output is powered separately. yes, there's not much point in bi-amping with a stereo with A+B since it divides the power, though some people do suggest it

This depends model to model, not a hard and fast rule.

My amp allows me to bi-amp my speakers using A+B with completely isolated output stages and there was considerable difference between biwired/jumper connection vs bi amped.

The best way I could describe mine was it was more playful after bi-amping it.