How do you install two amps to run one single box (only 1 black and red inlet to 3 subs)?

Question

One Huge Box, One RED/BLACK inlet to THREE SUBWOOFERS

Answer 1

You need to find an amp that matches the total watts RMS of the three subs and that's the same measured impedance at the terminal.

If the subs are 4 ohm DVC and wired like so:
http://i81.photobucket.com/albums/j230/sparky3489/TRI-SERIES-DUAL.jpg
The resulting impedance will be 2.67 ohms. So the amp must be 2 ohms stable for this setup.

If the subs are SVC and all wired in parallel, the resulting impedance will be 1.34 ohms. So the amp must be 1 ohm stable for this setup.

Answer 2

You really can't use 2 amps. You'd have to use either one amp for all 3, or add two more sets of connectors and use an amp for each sub.

There is no way to completely sinc the amps or wire the subs for just two amps. If you just wired the amps in parallel to the subs, it would sound like crap because the signals would be competing. The would make some signals too strong and cancel others out all together trying to get to the subs.

Now what you could do is add a second set of connectors and use one amp to run the outside 2 subs and one amp to run the middle sub. You'd have to wire the outside subs together in parallel.

I wouldn't rack my brain too much and just use one amp. Who is really going to notice the difference?

Answer 3

I would be tempted to try bridging the 2 amps (run the - lead of 1 amp to the - of one of the speakers, run the + of that same amp to the - of the second amp and run the + of the second amp to the + of another of the speakers; with the speakers being run in series - + to -, + to -).

With the speakers in series, the higher impedance will be more forgiving, generate less heat, and still give you plenty of pop. Make sure you run both amps off the same input.

Answer 4

just connect the 3 subs to the 1 terminal. however, i would strongly recomend using the lowest gauge possible to connect your terminal to your amp. if you can fit 8 gauge in there, then run 8 gauge. and make sure the wires are as short as possible. in the box, i would use 12 gage wire.