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  #1  
Old 01-26-2010, 07:19 AM
FX4 FX4 is offline
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Default those of you that built their own sub box...

I finally got all of my audio stuff in, and started making my box last night (only got a couple pieces cut, but basically I wanted to know what the easiest way to add a curve to a MDF box is? Look at the picture below. The part that is highlighted is going to be flush with the plastic trim on back of the cab (hence the cut out for the lip). However that little lip is curved... I was going to make a template out of cardboard, cut out a triangle in the same size out of MDF, use a dremel to carve out the correct curve, and attach a piece of aluminum over that piece as it's pretty bendable.... if there is other way please let me know. Thanks!




I also want to stay away from fiberglass if there is a different way as I have been told by a lot of people that the fiberglass would not attach nicely there without building a frame of a similar carve (make sense) and I don't want to build anything there to take up anymore internal space more then already needed. The dimensions of the box will give me .77 ft^3 and the shallow mount sub I'm using requires .65-1.5 so I will be on the lower end of the scale, but I'm going to stuff the box with that material as well. Oh and the exterior is going to be carpeted. Here's the few pieces I have cut already (nothing is attached yet just propped up for a quick look, and the jagged line still needs to be sanded a bit smooth....)





for what it matters here's the set up I'm putting in:
-Pioneer Premier DEH-P310UB head unit (has green lights to match dash!)
-Sony X-plod XM-1S slim amp (fits very nicely under the seat)
-Alpine SWS-1043d (4ohms) 10" shallow mount sub, I was planning on going with an 8", but I got this one free so I can't complain
-Stinger wiring through out

with the big 3 cable upgrade I think I will be OK as far as volts go as this isn't going to be a super loud system at all, just something a little more balanced the stock. I have a volt gauge on my scangauge so I'll keep an eye out and the volts start dipping back at idle, I'll upgrade the alternator.

Thanks,
Rafal
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Last edited by FX4; 01-26-2010 at 09:09 AM.
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Old 01-26-2010, 07:40 AM
blueranger789 blueranger789 is offline
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looks good so far, the idea of carving the mdf may work, just dont take too much off
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Old 01-26-2010, 08:00 AM
FX4 FX4 is offline
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one more question... since the amp is going to be running 2 ohms and the sub is a 4 ohms is this the correct wiring as far as speaker wire goes for the sub? http://a248.e.akamai.net/pix.crutchf...4-ohm_mono.jpg
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Last edited by FX4; 01-26-2010 at 08:04 AM.
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Old 01-26-2010, 08:28 AM
Johnbaum13 Johnbaum13 is offline
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That wiring will get you a 2ohm load on the amp. If you have issues with the amp over heating, you can always wire it down to 8ohm.

Correction: I just looked up that sub on Alpine's web site, and they specify that it has dual 2ohm voice coils, so you would need to run the wiring in series to achieve 4ohms. The way you posted will get you 1 ohm resistance, and over heat or fry the amp.

You'll need to wire it like this, which will give you a 4ohm load:




Alternatively, if you haven't already bought the sub, the 1043D had dual 4ohm voice coils, and the wiring you posted will get you a 2ohm load.
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Last edited by Johnbaum13; 01-26-2010 at 08:39 AM.
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Old 01-26-2010, 09:09 AM
FX4 FX4 is offline
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also, sorry for all of the questions, I just have never done this by myself and I know there is great knowledge on here.... after searching around on how to wire everything, does this seam correct? (my amp has 4 speaker wire slots, but since I want to run 2 ohms, I'm only going to use 2 of them...)

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Old 01-26-2010, 09:09 AM
FX4 FX4 is offline
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Quote:
Originally Posted by Johnbaum13 View Post
That wiring will get you a 2ohm load on the amp. If you have issues with the amp over heating, you can always wire it down to 8ohm.

Correction: I just looked up that sub on Alpine's web site, and they specify that it has dual 2ohm voice coils, so you would need to run the wiring in series to achieve 4ohms. The way you posted will get you 1 ohm resistance, and over heat or fry the amp.

You'll need to wire it like this, which will give you a 4ohm load:




Alternatively, if you haven't already bought the sub, the 1043D had dual 4ohm voice coils, and the wiring you posted will get you a 2ohm load.

it is the 1043D, sorry you are correct
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Old 01-26-2010, 10:53 AM
Johnbaum13 Johnbaum13 is offline
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The amp you said you were running is a single channel, and it's the subs that determine the ohms, not the amp. All that matters on the amp, ohm wise, is if it is stable at what the sub is wired for. The XM-1S is stable at 2ohm, but is a single channel amp. If you have a dual channel amp, you may want to double check what amp you have.
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Old 01-26-2010, 10:57 AM
FX4 FX4 is offline
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Quote:
Originally Posted by Johnbaum13 View Post
The amp you said you were running is a single channel, and it's the subs that determine the ohms, not the amp. All that matters on the amp, ohm wise, is if it is stable at what the sub is wired for. The XM-1S is stable at 2ohm, but is a single channel amp. If you have a dual channel amp, you may want to double check what amp you have.

thanks, someone on the other forum helped me out and it looks like this is wiring I will need to get done (option 1)
http://www.the12volt.com/caraudio/wo...s.asp~Q~1~I~42
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Old 01-26-2010, 12:24 PM
FX4 FX4 is offline
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so after some talk and reading this is my final wiring diagram:
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  #10  
Old 01-26-2010, 12:54 PM
FX4 FX4 is offline
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and since I like pictures, here's the plan I originally went off of:
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Last edited by FX4; 01-26-2010 at 12:58 PM.
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Old 01-26-2010, 04:49 PM
Johnbaum13 Johnbaum13 is offline
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Looks like you got it figured out.
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Old 01-27-2010, 01:28 AM
Tom Tom is offline
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I'm a big fan of clean stealthish stereo systems, and that looks like that's going to turn out great, definitely post pics of it once it's all done.
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  #13  
Old 01-31-2010, 08:07 AM
darthballsy1 darthballsy1 is offline
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dont fuse your remote wire
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Old 01-31-2010, 09:53 AM
KHARPS KHARPS is offline
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I've also never fused my remote wire.
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Old 01-31-2010, 10:04 AM
FX4 FX4 is offline
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Quote:
Originally Posted by darthballsy1 View Post
dont fuse your remote wire
Why not?
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