I have a 300 watt (one channel) amp with two 150 watt subs hooked to it parallel. My question is, are both subs getting 300 watts, or is each sub getting 150 watts?
The amp is a mono amp with a 2 ohm load, the speakers are 4 ohm. I didn't know if the two subs are getting 300 watts each, or if they are getting 150 watts each.
Depends on the load impedance. Look closely at the specs: does it say "300 Watts at 8 ohms", or something like that? Then, look at the specs for your subs. If they happen to be 8 ohms each, putting them in parallel would result in a 4 ohm load. The answer is complicated, but it is possible that your amp is providing close to 600 Watts total power into a 4 ohm load. Keep it up for long, and it will overheat and burn out.
EDIT 11:59PM 2-DEC-10: Spec'ed at 300 Watts into 2 ohms? That's great: when you wire the two 4 ohm subs in parallel, they will present a load impedance of 2 ohms to the amp. So the amp will deliver its rated power of 300 Watts into the load, and 150 Watts will be delivered to each speaker. (The total current from the amp is split by the parallel connection.)
Enjoy it. Just don't ask me to stand near it! 
Boss CE2502 2500 Watt 2 Channel Chaos Epic Car Stereo Amplifier Amp CE-2502, Boss CE2004 2000W Peak 4 Channel Car Amplifier CE-2004 W/ Remote + 4 AWG Amp Kit, Clarion XR2210 2-Channel Amplifier 200W Max Car Amp NEW, HIFONICS BRZ1700.1D +2YR WARNTY NEW AMP CAR MONO 1 CHANNEL 1700W AMPLIFIER, JBL GTO5355 5-CHANNEL CLASS AB 660W RMS FULL RANGE CAR AUDIO POWER AMPLIFIER, JL Audio 300/4 V2 Slash 300 Watt RMS 4 Channel Amplifier Car Audio Amp 300/4V2 , Rockford Punch 360a2 360a II Car Amplifier 360 watt 2-channel w/ End Caps Amp, BLAUPUNKT GTA270 Mystic 2 Channel Car Audio Power Amplifier Amp Black NEW !, MD SOUND 2696LT 1400W MAX 2 CHANNEL CAR AMP FOR PARTS OR NOT WORKING, NEW PYRAMID PB2518 3000 Watt 2-Channel Car Audio Amplifier Amp, NEW BOSS CE2004 EPIC 2000W 4 Channel Car Audio Amplifier Power Amp MOSFET Stereo, Legacy series 2 LA720 800w 4 channel amplifer car amp, NEW CUSPID CAR AMP. SPEAKERS&CAR AMPLIFER CABLE 160 WATT PER CHANNEL, PYLE PLMRA400 400 Watt 4 Channel Waterproof Marine/Car Amplifier BLOWN CIRCUTRY, NEW BOSS AUDIO R2504 1000W 4 Channel Car Amplifier Amp, New Acoustic Audio XS1602 1600 Watt 1/2-Channel Car Amplifier, New HIFONICS ZEUS ZRX600.4 600W RMS 4 Channel Car Amplifier Power Amp ZRX6004, JL AUDIO XD200/2 2-CHANNEL CLASS D 200W RMS MOSFET CAR AUDIO SUBWOOFER AMPLIFIER, AUDIOBAHN AC600 CAR AUDIO AMP EXPERT 6FT 2 CHANNEL RCA INTERCONNECT CABLE NEW, AUDIOBAHN MURDERED OUT SERIES 1200W RMS 4 CHANNEL CLASS AB CAR AUDIO AMPLIFIER, NEW PYLE PB717X 1000W 2 CH CAR AUDIO AMPLIFIER AMP 2 CHANNEL 1000 WATT, MTX AUDIO 4 CHANNEL THUNDER ELITE SERIES 1900W CAR STEREO BRIDGEABLE AMPLIFIER, AUDIOBAHN MURDERED OUT 2 CHANNEL 1200W RMS CLASS AB MOSFET CAR STEREO AMPLIFER, Lanzar Audio VCT2610 6000W 2 Channel Car Amplifier, Legacy LA2770SL 1000W 2 Channel Car Amplifier, AUDIOBAHN AMA24002H 2400W MAX 2 CHANNEL CLASS AB MOSFET CAR SUBWOOFER AMPLIFIER, Kenwood KAC-7005PS 5-Channel Car Amplifier Amp 4 Channels + 1 Sub Channel, AUDIOBAHN 1200W MAX MURDERED OUT SERIES 2 CHANNEL CLASS AB MOSFET CAR AMPLIFIER, AUDIOBAHN AMA12002H 2 CHANNEL 1200W MAX CLASS AB MOSFET CAR SUBWOOFER AMPLIFIER, AUDIOBAHN 2 CHANNEL MURDERED OUT SERIES 300W RMS CLASS AB MOSFET CAR AMPLIFIER,
Comment