Bi-Amping confusion

[Boyse6748]

Default Bi- Amping Confusion
Dear All,

HELP!!!!!!

Perhaps there is someone in the forum that could explain ? (As there is no definitive information on the Internet, which makes sense !)

I am currently bi-amping / bi-wiring my system ( Horizonal) which to me makes sense, as the left and right channels remain, as though using one stereo amp. ( according to my test disks )

Now.... I have tried vertical bi-amping, i.e. One amp for one speaker ( Left & Right). As described in many internet diagrams.

However, when tested, the Left & Right channels are coming out of each speaker ( which looking at the diagram, seems obvious). I.e., No defined left and Right channels ..????

To me, the Horizonal setup appears more natural, (Real Stereo), whereas, the Vertical doesn't sound too deferent..... But the is no defined left or Right.

Very confused.... So why both options ? (when one is true stereo and the other is most certainly not).

I know all the stuff about different amps to drive Bass and Treble, but that's not what I'm asking, or perhaps it's just a case of going with what you like?

Kit is:-

Townsend Rock 7 / SME V / Benz Wood / Whest Two / Spendor A5S / Quad 909's x Two etc, etc.

Any pearls of wisdom would be appreciated.

Peter

[walpurgis]

Here are two schematics that illustrate the differences:

Bi-Wiring



Bi-Amping

[Stratmangler]

Default Bi- Amping Confusion
Dear All,

HELP!!!!!!

Photos of how you have wired it might help us diagnose it if you get the same results following the above diagram.

[lurcher]

Very confused.... So why both options ? (when one is true stereo and the other is most certainly not).

Both are true stereo (if done correctly). One way gives better LR separation (one amp per speaker) and the ability to make sure the HF and LF are matched (though the balance isnt), the other way, one amp for LF one for HF, different amp gain might alter the HF/LF balance.

However, when tested, the Left & Right channels are coming out of each speaker

Well, you may have got it wrong then.

The major reason you would want to use one amp for LF, and one for HF is if the two requirements are different, for example, you might want to use a big mosfet amp for LF, and a sweeter valve amp for HF. Or you may want to go three ways, if the crossover can do it.

[Arkless Electronics]

A theoretical benefit of "horizontal bi-wiring" is that the treble is being handled by a separate amp from the one driving the power hungry woofers and so is "just ticking over" with little load on the power supply, even when the bass is thumping out...

[danilo]

Erm.. it reads like you are running a left and right input from your Source to EACH amp !
Should be feeding Only one channel per amp.
Bi amping, IMO, as in without a line level crossover is only useful If one's speakers are Power Pigs and one's onhand amp(s) are low power / not up to the job.

[Boyse6748]

Thanks nick,

I think my post has been misunderstood, the question I'm asking is why the difference between horizontal and vertical bi amping ,, one works... The other appears not to. Well, not in the context I'm refereeing.

A geat answer, but not the one I was expecting.

Sorry but there are no wiring anomalies.

Old but not thick ,,,,,!!!!!!

Boysey

[Arkless Electronics]

Erm.. it reads like you are running a left and right input from your Source to EACH amp !
Should be feeding Only one channel per amp.
Bi amping, IMO, as in without a line level crossover is only useful If one's speakers are Power Pigs and one's onhand amp(s) are low power / not up to the job.

Indeed it does. There HAS to be some such wiring anomaly for the described problem to occur.

[Boyse6748]

http://i322.photobucket.com/albums/n...tal_Bi-Amp.jpg

This is the way it is .

Peter

[Arkless Electronics]

The diagram is correct but IF you have moved to vertical bi wiring you need to put both "rights" to one amp and both "lefts" to the other......