Multiple Amplifiers to a single voice coil

[rollin24's]

hey
is it possible to wire like 2,3 or 4 or even more amplifiers to a single voic coil?
thx

[sr20dem0n]

If the amps are identical and strappable then yes, if not then I definitely would not try it.

[Wynand]

Any difference between the amplifiers outputs would cause them to fight each other, rather than drive the speaker.

[rollin24's]

can u strap 4 amplifiers to one voice coil, even if they are identical, like use the high level input of each amp

[Volenti]

Originally posted by rollin24's
can u strap 4 amplifiers to one voice coil, even if they are identical...

In theory yes (but you won't gain squat from the 2 additional amps), in reality it's cheaper and easier to simply get a
big honking amp , the real limiting factor is feeding such a beast (or any other high power amp setup) with sufficient current.

[sr20dem0n]

Originally posted by rollin24's
can u strap 4 amplifiers to one voice coil, even if they are identical, like use the high level input of each amp

AFAIK, 2 is the limit

[rollin24's]

is it always better to run the amp wiring setup as low ohms as posible?... thats wat i thought, because i wana buy sum alpine amps and there only 2 ohm stable

[lndm]

Have you considered bridging the amps?

[dangus]

Is it Crown that uses some "double bridged" technique in certain amps? Like, the second amp's output is tied to the first amp's common, but they're both driven from the same input. So, if you got another pair of amps to drive the other side of the voice coil, (feeding them an inverted signal), there'd be 4 amps driving one voice coil.
Or was this just something I dreamed after eating a little too much salsa and nacho chips?

[sr20dem0n]

Originally posted by rollin24's
is it always better to run the amp wiring setup as low ohms as posible?... thats wat i thought, because i wana buy sum alpine amps and there only 2 ohm stable

No, you wire it to match the amp, 1 ohm is no better than 4 ohm unless the amp you're using puts out more power at 1 ohm than 4 ohm.

If the amp puts out full power at 4 ohm then that's what you would want to run it at. If the amp puts out full power at 2 ohm then that's what you would want to run it at. If the amp puts out full power at 1 ohm then that's what you would want to run it at.


When building the sub setup, you should pick the subwoofer first, then pick an amp to give you the power you want, then pick the voice coil arrangement on the sub that will let you wire it to match the amp (if there are multiple voice coil choices, if not then when picking an amp, you need to pick one that matches both your power and impedance requirements).


I don't know why you're looking at wiring so many amps to a single coil on a sub...there are amps out there that can do 3,000 rms, there's absolutely no reason to have more than one of those unless you're doing SPL competition.