Car Stereos: what power source an current do i need, volt dc power, rockford fosgate t10001bd


Question
Hi my name is bob and i have a Rockford fosgate T10001bd mono amp and was wondering what i need to hook it up to a wall socket in my house?  And when i do hook it up to what i need will it act as a capacitor all on its own from the constant power flowing threw wall or will it lose power after bass kicks in for a while? thanks you

Answer
Hi Bob,

Sorry about the delay in answering this question.

As I'm sure you're aware, you can't just connect the amplifier directly to the wall socket.  You need a 12-volt DC power supply, with enough current capacity to keep up with the amplifier's output.  The cost of this item might make your plans impractical.

DC power supplies are available from various sources, and models with more current capacity are much more expensive.  Here's a list of power supply units from Powerstream, made specifically for use with mobile audio equipment:

http://www.powerstream.com/low-noise-high-power.htm

Note how the price increases with the current capacity.  Note also that a high-current power supply may require your wall socket's wiring to be upgraded.

The question is, how much current capacity do you need for your amplifier?  The answer depends on  the load impedance at the amp.  Your amplifier's unregulated design means that it produces much more power when used with a 1-ohm load than it does with a 4-ohm load.  The more power your amp is producing, the more current it needs from the power supply.

If you plan to use the amplifier with a 1-ohm load, so that you can get the full 1000-watt RMS rated power, then I'd use a power supply with at least 90-100 amps of current capacity.  If you're using it with a 2-ohm load, it's limited to about 650 watts of output; so you can probably get away with 60 amps of current.  If you're using it with a 4-ohm load, for 350 watts of power, then you'd want a minimum of 30 amps.

Provided that you have a power supply with sufficient current capacity, your amplifier should be able to keep up with the bass hits.

Hope this helps!

Brian