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Hooking up a subwoofer if using a stock deck.

Old 08-08-2009, 11:43 AM
Junior Member
Join Date: May 2009
Location: richmond, va
Posts: 6

I just went into bb today and the dude installing there said that i would not be able to control my bass with a stock headunit unless i used the fade and put the amp and subs on the same channel as either the front or rear speakers. First off, all i want to be able to do is adjust the bass put out by my subs the same way i do my stock speakers. Is this possible and the douche at bb a moron or do i need to look at other options?
Old 08-08-2009, 10:17 PM
virgin1's Avatar
Super Moderator
Join Date: Mar 2007
Location: Manor, TX (Outside of Austin)
Posts: 8,660

I'm no expert on the subject, but it seems to me that if you are adding in bass to the signal received by the slave/sub amp, that that amp would do nothing but boost it. 'Course you would be driving more bas into the OE speakers at the same time.
My guess is that either the BB guy didn't understand what you were talking about, he is a douche, or maybe I'm the douche. Try hooking it up to the speaker outs first and find out.
Like I'd said, my interest in car stereo stopped about 15-20 yrs ago. Though it seems the basics, like this, would stay the same, things may have changed.

Old 08-09-2009, 06:30 PM
Junior Member
Join Date: May 2009
Location: richmond, va
Posts: 6

What your saying makes perfect sense to me. Im gonna go in one day when he (douche) is not there and see what someone else has to say. Thanks
Old 08-15-2009, 01:45 AM
Junior Member
Join Date: May 2009
Location: richmond, va
Posts: 6

one last question. i'm about to put down 800 on subs and amp. i have no intentions of getting a new headunit. will i get good results with a stock headunit or should i reconsider?
Old 10-26-2009, 12:11 PM
Junior Member
Join Date: Aug 2009
Posts: 10

great post! will help me up with the sound system! hope what i think will do for me now
Old 11-10-2009, 11:10 PM
jaimie08mazda3's Avatar
Senior Member
Thread Starter
Join Date: Aug 2007
Location: Guelph ontario
Posts: 2,901

Good Luck with your build. It takes alot of time but its well worth it, I thought it worked quite well... but then again I got 4 10"s in the trunk of my 3 lol.
Old 01-31-2012, 08:15 AM
Join Date: Dec 2011
Location: Canada
Posts: 2,636

You Forgot 2 Grounds.
Grounding a big amp is not sufficient enough to ground it at the back of the car!
You have no idea of how many times I have seen or heard this. Many people put a big honkin power wire but don't logically think the ground wire all the way thru. My co-worker long ago did this also and fried his ground wire up front.
Have you seen the Stock ground wire coming off the negative battery terminal ---- it isn't big enough to handle that extra draw, not to mention you should also clean it.
1) Please add another ground wire from the negative terminal of the battery to the body (a good spot is battery hold down a few inches from stock ground).
2) Please add a ground wire from the engine block to the negative battery terminal as alternator will be working harder and your engine will love it (this one is not mandatory but logical).

Pics from my Mazda 6.
Attached Thumbnails Hooking up a subwoofer if using a stock deck.-grounds%40battmount2.jpg   Hooking up a subwoofer if using a stock deck.-battafter.jpg  

Last edited by UseYourNoggin; 02-01-2012 at 08:58 AM.
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