Re: RE Audio SRX12D4 vs. Infinity Reference 1262W vs <$75 - HELP!
Quick guide for you bro:
Say you want to set your amp to run at 1000 watts @ 1 ohm.
1). Take your target RMS wattage and multiply it times your target impedance. (1000 x 1 = 1000)
2). Square root the result (31.62)
3). Disconnect your sub speaker wires from the amp, and replace them with the leads of your DMM. Set the DMM to AC voltage.
4). Get a test tone on a CD or MP3 or something. 40-60 hz is best. Set it to play on repeat.
5). Turn your HU to the highest volume you'll be playing it at (for example, 30 out of 35 on an Alpine HU, etc). If you plan to boost any bass on your HU, set it now. I wouldn't boost any bass though, and turn any loudness setting OFF.
6). Turn your gain knob on the amp until the DMM reads at or close to 31.62 Volts.
7). Plug your sub back up and enjoy.
Simple SQ System:
Head Unit: Alpine CDA-117
Active Crossover: Cache' CEX
Front Stage Amp: Boston Acoustics GTA-704
Components: Polk Audio DB 6501
Sub Amp: Boston Acoustics GTA-1000m
Sub: JBL P1224, 2.5 ft^3 @ 25 hz enclosure
Rear Fill: Sony Xplod 5.25s on HU power lolz