Crunch CRBX12 Bass Packages - Car Subwoofers at Onlinecarstereo.com
thats where your amp came from... part of a diy kit
it is only 375rms at 2 ohms...your sub is 4 ohms... you are getting around 185 rms and thats it... thats why it sounds like crap...your overdriving that tiny amp trying to get volume that it cannot produce..
either that or your settings are all wacked out
problem is both amp choices you gave give you 500 rms you only need 250 rms... too much more and you will roast that sub...
PZT500.2
500 Watts 2-Channel Class A/B Car Amplifier
4 ohm 65 watts x 2 chan.
2 ohm 125 watts x 2 chan.
Bridged, 4 ohm 250 watts x 1 chan.
Total max power output: 500 watts
MOSFET PWM power supply
DC, speaker short, thermal, and overload LED power indicators
Tuned Bass EQ (0-12 dB bass boost at 45 Hz)
Slow un-mute turn-on enables a safe soft start
2/1 Channel operation for speakers or subwoofers
Full range RCA line output connections
Adjustable voltage level (0.2-6V)
1 Pair of preamp RCA outputs
Stereo and mono switch
Crossover switch for low-pass filter, high-pass filter, and full
Illuminated Crunch embossed logo on the face of the amplifier
Power and protection LED diagnostic indicator
Adjustments and controls conveniently located on the front of the amplifier
Aluminum alloy heatsink for efficient heat dissipation
Nickel-plated RCA level inputs
Nickel-plated screw terminals
Variable high-pass filter (60-1,200 Hz)
Variable low-pass filter (30-250 Hz)
Frequency response: 10-45,000 Hz
Dimensions: 9-1/2"L x 10"W x 2-3/16"H