Instructables

FREE tricks to get the most BOOM from your subwoofer and Amp!

FeaturedContest Winner
Are you disappointed with your sub(s)? Is your amp shorting or overheating frequently? Are you considering installing your own system but you don't want to mess it up? If so, then this instructable is for you!

Hundreds of factors have to be taken into consideration when it comes to car audio to achieve a clear, crisp sound. While throwing a subwoofer and amp in your trunk may give you some bump, but what you really want is a BOOM that will make friends jealous and neighbors annoyed!
 
Remove these adsRemove these ads by Signing Up

Step 1: The Wiring.

Understandung the wiring in your car audio system is crucial to good, clean bass. Run the positive cable on the opposite side of the car as your speaker and RCA patch cables. If not done correctly you might get severe ground noise (static/fuzz).

If your amp is blowing fuses, shorting frequently, or abnormally overheating it is commonly caused from an improper ground.

Correctly ground the amp! Make sure the ground location is excellent. Preferably directly to the car frame, not a flimsy peice of aluminum. Sand the surface, make good contact, yadda yadda yadda. A simple test is a to use a battery tester or a test light to assure 12.6 volts is running through the cables. But a true test is to use a multi-meter set to Ohms and connect one lead to your ground location and somehow connect the other lead directly to the Negative battery terminal, then subtract the natural resistance from the test leads/multimeter. Idealy the goal would be 0 ohms but that is near impossible, just do not allow more than 1 Ohm.
Also important is the guage of the cable. The chart provided is a useful reference tool. The length of the wire and the desired power of the system is taken into consideration.
ellisgl2 years ago
Fiber Glass is better than Poly Fill. Also if you line the walls with neoprene, that might help too.
Please for the love of your subs, don't fill your box with fiberglass.

Use Poly fill
http://www.amazon.com/Mountain-Mist-Fiberloft-Polyfill-Stuffing/dp/B000GIEULG
@bsodergren:
http://www.pitt.edu/~szekeres/resonant.txt
http://www.bobgolds.com/AbsorptionCoefficients.htm
Fiberglass fill is superior, you don't need to provide proof for that.

over time, fiberglass breaks apart in to dangerous fibers that WILL damage speakers and if you have a ported box, can be put in the air and is hazardous to your health.

Ever been in an attic for a while with regular fiberglass insulation (not blown in)? then you know what i mean.

Poly fiber fill does nearly the exact same thing but is undeniably safer to use than fiberglass.

Here's a couple random links that may or may not substantiate my claim (much like what you posted)
http://home.earthlink.net/~ralphmeister/subbox_arc.htm
http://www.audiokarma.org/forums/archive/index.php/t-152152.html

i also score +1 internets for an earthlink.net URL.
Neoprene???
Yeah - The stuff old mouse pads are made of.
FreakyFan2 years ago
Thumbs up if Jakes Facebook sent you here!!!
william13702 years ago
nice. filled my box wit stuffing and it sounded much better. Thanks
Ms.Taken2 years ago
This is just what I was looking for! Something basic. Although most of your guide common sense.
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!