How To: Power 2 Amplifiers With A M2-ATX

Maheriano · 09-26-2009, 05:04 PM

I have a Rockford Fosgate Punch P300.1 amplifier for my subwoofer and it requires a higher power input on the remote line than the M2-ATX can provide so here's how you can solve this if you're having similar issues.

Tools you will need (maybe):

A computer to read this DIY

Soldering iron

NPN Type Switching Transistors

Wire stripper

solder

lighter

heat shrink tubing

random lengths of wire

refreshments

What To Do:

Take out one of the transistors and bend the pins out so they're easier to work with:

Connect some lengths of wire in a Y shape to branch off and connect to both amplifiers:

Solder the wires together:

Cut off a piece of heat shrink:

Solder it to the transistor along with a power wire. The placement of the wires is detailed on the back of the packaging for the transistors:

Heat up the heat shrink so it shrinks around the wiring and seals it up:

solder on the final wire in the car:

Now when you turn on the computer it should power both amplifiers as well. Enjoy!

barnyard · 09-26-2009, 05:34 PM

Nice how-to, but you really should include some detail as to what goes where!

Maheriano · 09-27-2009, 12:44 AM

There are 3 pins coming off the transistor, they go to the battery, 1 to the amplifiers and 1 to the J6 connector on the M2-ATX. The diagram on the back of the transistor packaging will actually show you which wire is for what, I won't post it here because it might differ between transistors. It's really rather simple, there's not much to say.

EDIT - I'll explain it briefly here.
The pins are numbered and the numbered diagram is on the back of the packaging. But one pin is labeled as COLLECTOR and that will take the input from the power supply. In my case it's the J6 connector on the M2-ATX. Another pin is labeled BASE, this is power from the battery of the car. The last pin is labeled EMITTER, this sends the power out to the amplifiers, split the wire and run it to each amplifier. Done.

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