Question about Alpine MRP-M1000 Car Audio Amplifier
I have an alpine mono Channel MRP-M1000 Watt amp with two Alpine 12'' SWR-1242D Dual voice Coil 4-Ohm Subs. my problem is that i cant get any bass to come out. i have all the wires hooked up. all the fuses are good and the blue light on the amp lights up when i turn the car on. but i cant figure out whats why its not working. Any advice would be greatly appreciated.
I dont know if this will help you but start at the deck and make sure that the outputs(RCA) arent crossed over to highpass and do the same at the amp make sure that its set for lowpass- set half gain -bass boost half gain- subsonic minimum - If that doesnt help try using an i pod with an adaptor that you can play it right into the amp this is to see if you are getting signal from the deck to the amp if it doesnt work with an i pod or mp3 plugged directly into it then you may have got you a blown amp going on- good luck with that
Posted on May 30, 2009
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Posted on Jan 02, 2017
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Hi Gott Mudd,
I can relate to feeling it in the bones. You got the stuff to do it. You should try the Alpine MP3 head units with bass boost, those are bad to the bone.
Amp to Speaker I like to use the code VC for Voice coil, and AO for Amplifier output. Also + for positive. If I say VC1-, I am referring to the first connector starting left to right on the Alpine Sub. Now I have not seen a Kicker KX1200.1 amplifier. All I see are MRA, MRP, or PDX prefix on the part numbers. So take what I am saying as a guess. You may want to revisit looking at the model of the amp to be sure your giving the right information.
We are going for 2 Ohms. Paralleling the two subs, not the voice coils. The voice coils will be series. Bridge the amp if necessary to get mono channel. only using AO+ and AO- for output.
AO+ to Sub1VC1+
AO+ to Sub2VC1+
Sub1VC1- to Sub1VC2+
Sub2VC1- to Sub2VC2+
AO- to Sub1VC2-
AO- to Sub2VC2-
Set your Crossover to LPF
Adjust the bass gain down to lowest until you test.
Set the Frequencies to midrange between 40 and 100hz
Your box can be ported or not. It depends on the space your have. If you do not have much room, go Enclosed and build a box that the inside space is less than 1 cubic foot. Make sure you give barely enough clearance for the speaker to fit. If you have room, Go with a box and vent it with a 3 inch Vent tube 10 inches long.
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