Question about Car Amplifiers
I have an alpine mrv 1000 and 2 10 inch infintity subs. when running them two channels it all works great. but doesn't hit like it should. then i switch into mono on the amp and bridge them, sounds really good but when i give it volume the amp shuts off. what is the way to wire it to get the most power? and what is the phase switch for that says 0 or 180.
RMS power at 12V 20Hz-20kHz
2 x 100W @ 4 ohms (0.08% THD)
2 x 200W @ 2 ohms (0.3% THD)
1 x 400W @ 4 ohms bridge (0.3% THD)
That amplifier is not 2 ohm mono stable in bridged mode (assuming subs are SVC 4ohm).
It is seeing too much resistance and overheating. Thermal overload protection kicking in.
The phase switch allows you to switch from in phase to 180* out of phase. This feature is not to taken as written in stone. In some rooms, or locations of a room, the output will sound louder/better either in phase or out of phase. So there is no correct setting. It all depends where the sub is located and the acoustics or shape of the room.
Phase is term that describes multiple characteriscs and behavior of a speaker system.
Phase alignment: The vertical alignment of the voice coils of all the speakers in a speaker cabinet, so that all signals reach the sweet spot at the same time.
Crossover phasing: If one or more crossover slopes are of a different slope, then the speakers would not fire at the same time, causing delays in response.
Reverse polarity: You may reverse the polarity of a speaker to make the speaker fire inwards instead of outwards to improve alignment with the other speakers in the system. This is very common in tweeters circuitry. As for woofers, if the polarity is reversed, there is usually a cancellation of bass, to a degree.
Posted on Dec 22, 2008
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Hi Big Nick,
Sounds like you have got almost all the good out of those Subs. You can find the screws you need at almost any hardware store or Auto parts store. The light is becase you are dloading the amp with low OHMS. You may need use one channel and Run the wiring like written blow to get the power problem to disappear.
S1+ = Kicker comp cvr sub coil 1 positive
A+ = Amplifier Positive output.
A+ to S1+
S1- to S2+
S2- to A-
Oct 18, 2007 | Alpine MRV-T757 Car Audio Amplifier
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