Question about Alpine Type-R SWR-1242D Car Subwoofer
Hey I have a single SWR-1242D with a MRP-M1000. The only wiring diagrams it gives me are for 2ohms and 8ohms. The amp at 2ohms would be giving 1000rms which is more then the like 600rms the sub can handle so im worried about blowing it. Also to my knowledge(which there is very little of) I cant or should not wire it for 8ohms. If anyone can please help me out I would greatly appreciate it.
Having to much power for a subwoofer is a veeeery good thing, it will provide a lot of control and quality sound to your sub.
But this sub is a dual voice coil at 2 x 4ohm so if you want to hook it up at 4 ohm u need a 2 channel amplifier running mono mode.
i dont recomend that you hook up in 4 ohm, its better to take some time adjusting the levels on the amp and the headunit.
This system has the potential to create a realy good bass sound if u tune it the right way.
Posted on Feb 10, 2009
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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.
Oct 15, 2007 | Alpine Type-R SWR-1242D Car Subwoofer
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