Cheap DIY Car Subwoofer with Logitech Computer Sub

iamtrout

Diamond Member
Nov 21, 2001
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Ok, some of you may remember a LONG time ago I made two threads, both about the feasibility of installing computer subwoofers in cars because

1. They're cheaper than conventional car subs. Enclosure, amp, and sub are all there for you, already perfectly designed for the sub.
2. If you've already got a good computer sub, might as well use it on road trips.
3. They sound VERY decent for the money.

The naysayers warned me not to do such a thing because

1. The heat in a car during summer and such would destroy the sub, which was never designed to withstand those temperatures.
2. This sub malfunction could set the car on fire (poster said he personally saw this happen).

The Present:

I've put 15K miles on my car with the sub installed and blaring, from the scalding heat of the summer to the below freezing temps during spring in the Rockies, literally halfway across the country and back, and everything has gone without a hitch.

My Setup:

500W Power On Board Inverter - $40 at Sam's Club, may no longer be selling this inverter

200W RMS 10" Logitech Sub from the $200 Z-5500. I also used a 120W RMS Logitech 8" sub from the $50 Z-2200.

Stereo Y Adapter - $6

MP3 Player

Cassette Player Adapter - $20 or less, since my headunit doesn't have an AUX in.

Control Unit from the Logitech speaker system

Hookup:

Inverter:
Basically what you have to do is first install the inverter. For a sub like the 120W RMS 8", all you need is a small 200W inverter that plugs directly into your cigarette lighter. For a sub like the 200W RMS 10" Logitech, you have to get a beefier inverter, and hook it up directly to your car battery.

Consult the inverter manual for instructions. It is not hard. The hardest part is perhaps getting the wires from your battery through the fire wall and into the passenger cabin.

Sub:

Put the sub in the trunk, plug the power cable into the inverter.

Plug the audio system's control unit into the sub, and put the control unit in a convenient place where you can reach it while driving and control the sub's volume levels.

MP3 Player:

Plug the Y Adapter into the MP3 player, and plug one end into your AUX or your cassette player adapter, and the other end into your sub's control unit. This in essence feeds audio signals into the sub and your car's regular audio system at the same time. Your sub will only reproduce the low notes, and the regular audio system can take care of all the rest :)

Finalizing:

Turn on the inverter, turn on the sub, turn on the player, play some tunes, and adjust your sub and car speakers for the desired listening experience.

Pictars:

Sub in the Back:

1
2
3

Back of the Sub:

4

Backseat:

5
6

Front:

7

From the MP3 player: Y Adapter, left wire going into the cassette adapter, right wire going to the control unit (clunky thing with the round knob, not shown in this picture)

Regular Driving Setup:

8

Conclusion:

This setup cost me ~$250, and most of that money doubles in my car and in my room. The bass that this thing pumps out is quite impressive. It's NOT the back-massage feeling of real car subs, but it's powerful enough to shake the rearview mirror and the sideview mirrors. The bass gets pretty damn low and it's a very welcome addition that gives your music a more fuller sound. Works great for rap :)

I believe this would work just as well for Klipsch subs.

I've also tried this with the Z-2200's 8" sub, and it worked out quite well too. The 8" sub can really pound, as owners will attest. For only $50, it's one HELL of a deal for a cheap car sub that'll add fullness to your music. The Z-2200 sub also had the ability to vibrate the rearview mirrors and sideview mirrors. The Z-5500 sub just goes lower and hits a bit harder.

Like I said before, I believe this setup is perfectly safe. I've used the 8" setup for half a year and the 10" setup for half a year as well, both on for roadtrips and off for regular driving around town, where they go back in my room. The roadtrips for the 10" totalled 15K miles. From below freezing alpine springs to humid, hot summers in Ohio and NY, the subs have functioned without a hitch, and my car has never been set on fire.
 

iamtrout

Diamond Member
Nov 21, 2001
3,001
1
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Originally posted by: MercenaryForHire
Originally posted by: iamtrout
Originally posted by: MercenaryForHire
Ghetto much? :p

- M4H

Fvck yeah! But it's works and sounds great, that's the beauty of it.

Now wire it up for the full 5.1 setup, and attach a CarPC! :beer::D

- M4H


I'm seriously thinking about it, but people have told me that they will sound like sh!t because the intended soundstages are so different. Car speakers are designed for cars, 5.1 speakers are designed for rooms. Putting room speakers in a car may sound weird.

I'd still try it though :)
 
Jan 31, 2002
40,819
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Originally posted by: iamtrout
Originally posted by: MercenaryForHire
Originally posted by: iamtrout
Originally posted by: MercenaryForHire
Ghetto much? :p

- M4H

Fvck yeah! But it's works and sounds great, that's the beauty of it.

Now wire it up for the full 5.1 setup, and attach a CarPC! :beer::D

- M4H


I'm seriously thinking about it, but people have told me that they will sound like sh!t because the intended soundstages are so different. Car speakers are designed for cars, 5.1 speakers are designed for rooms. Putting room speakers in a car may sound weird.

I'd still try it though :)

I'd do stuff like that to mine, but since it's a Civic, there'd instantly be calls of RICER! :p

- M4H
 

WT

Diamond Member
Sep 21, 2000
4,816
59
91
Hah .. ghetto but VERY coo! nonetheless. Thats the beauty of it ... we've all thought about it, but not very many have done it.

:thumbsup:

 

SithSolo1

Diamond Member
Mar 19, 2001
7,740
11
81
Buy this.

Put it in this.

Add this.

Then hook it up with this.

And for something that cost roughly $200(sans shipping) you will have something that kicks the crap out of that logitech sub.
 

thomsbrain

Lifer
Dec 4, 2001
18,148
1
0
i have thought about doing the exact same thing with a home theatre sub. it seems so retarded that you have to pay at least $300 to get a semi-decent driver, a sh!tty fiberboard box, and this bulky amp that you have to find a place to put and avoid crushing with your luggage. for those of us who want something better than a bazooka tube but actually live real lives and put crap in our car, a home theatre sub is a good solution except for the AC/DC problem. it's self-contained, easy to remove at a moment's notice, and way cheaper and easier to setup than car subs.

and for people complaining about how this guy's sub LOOKS? all i can do is laugh at you.
 

iamtrout

Diamond Member
Nov 21, 2001
3,001
1
0
Originally posted by: SithSolo1
Buy this.

Put it in this.

Add this.

Then hook it up with this.

And for something that cost roughly $200(sans shipping) you will have something that kicks the crap out of that logitech sub.

Why do this when you've got the Logitech Z-5500s or Z-2200s just laying around? Especially when you're going on a road trip and they'll just be sitting there in your room? Not to mention with a "real" sub setup you gotta get a half decent headunit, so might as well add another $50+ to that price.

Or for half the price ($100) just use the Z-2200 sub and an inverter... the inverter is a useful thing for any car anyway... I see inverters as an essential for any car. Charge your laptop, charge your cell, power a soldering iron, charge AA batteries, charge a PDA, no more having to buy extra car chargers for all your peripherals.
 

thecoolnessrune

Diamond Member
Jun 8, 2005
9,673
583
126
Originally posted by: SithSolo1
Buy this.

Put it in this.

Add this.

Then hook it up with this.

And for something that cost roughly $200(sans shipping) you will have something that kicks the crap out of that logitech sub.

That has GOT to be for car audio what ATADC is for PSUs ;) :laugh:
 

SithSolo1

Diamond Member
Mar 19, 2001
7,740
11
81
Originally posted by: thecoolnessrune


That has GOT to be for car audio what ATADC is for PSUs ;) :laugh:

Actually the Assassins are amzingly good for the money and the Profile amp is a solid budget contender. The only things I am unsure about are the box(how could you screw up a cubical box?) and the wiring kit. You also do NOT have to have a decent headunit, most stock head units with work fine with an aftermarket amp. I'm not saying what you did is a bad but you can do better for the money.
 

d33pt

Diamond Member
Jan 12, 2001
5,654
1
81
haha that is super ghetto. did you even fuse the power wire going to the battery?
 

iamtrout

Diamond Member
Nov 21, 2001
3,001
1
0
Originally posted by: d33pt
haha that is super ghetto. did you even fuse the power wire going to the battery?

Yes.

Originally posted by: thescreensavers
dosent the sub slide when you accel. and brak and to many wires can you hid them more?

I'm sure you can hide them if you tried. I just don't care considering I'm the only one driving on roadtrips. As for the sub moving, it stays in place pretty well.
 

Kaido

Elite Member & Kitchen Overlord
Feb 14, 2004
50,151
6,393
136
I did that when I was driving my old 91 saturn. It only had a radio, so I hooked up a cheap pair of 5.1 computer speakers I had along with an inverter and my old MiniDisc player. It was really ghetto but it sounded fabulous. Even better than the stock system in my 05 saturn :)
 

iamtrout

Diamond Member
Nov 21, 2001
3,001
1
0
Originally posted by: Kaido
I did that when I was driving my old 91 saturn. It only had a radio, so I hooked up a cheap pair of 5.1 computer speakers I had along with an inverter and my old MiniDisc player. It was really ghetto but it sounded fabulous. Even better than the stock system in my 05 saturn :)

How the heck did you mount your speakers? :confused:
 

WT

Diamond Member
Sep 21, 2000
4,816
59
91
I have all the hardware, but I can't find a way to cleanly add it to my current OEM system. I have a box with a pair of MTX 10" subs and a Soundstream DTX200 watt amp left over from my booming days and my current ride has a factory amp and with no pre amp outs and no pre-amp hookups on the head unit as well. I wanted to use it in my SUV but didn't want to pay $200+ to have it professionally done, but I am not even sure it could be done without some ugly modding.