Ok, this pisses me off (sub related)

[zCypher]

I made a thread recently about songs to play on subs - since I got my two 12" put in yesterday afternoon. Anyhow, I've had work done by the same guy before in my z28, and he's a real nice guy and seems to do pretty good work - so I tipped him very well on the sub job. anyway basically all that was done was hook up an amp, two subs in a box, and hook everything up nice and clean.. all on the stock lancer sound system. so i have the standard head unit (cd player) + the standard 4 speakers that come with the lancer, which are very good as it is.

any how... everything was cool. Until I noticed a VERY weird and annoying quirk. So i'm drivin around and I pull in my driveway finally, and I just turn down and turn off the stereo before shutting off the engine, as I usually do. So then I'm thinking okay I'll just have a look at my new toy, open the trunk .. VVVVRMMMMMMMMMMMMMMM! WTF? I turn the key back and turn the radio back on, and right as the radio turned on the noiise stopped (coming from the subs) and whatever the radio was playing played normally.

WTF? someone please care toexplain as to what this could POSSIBLY be? he just fudged up the job, or is this something i am gonna have to live with? I don't want to have to keep the radio on explicitly every time i want to open the trunk and happen to have my key in the ignition... sheit.

so what do you think? I'm gonna get a hold of the guy when possible (he's not always there) and consult him about this - but it's pretty damn annoying considering I just bought two 12" subs + a box + an amp + a big tip for the guy. so wtf. please tell me you guys out there with subs in your cars don't have this quirk.. :Q i haven't noticed it in anyone ellse's car though so i doubt that.

anyhow.. yea, just needed to vent a bit. I tested it out again just to make sure it wasn't some weirdass one-time screwup thing.. it does it consistently. and it's a REALLY loud humming or whatever you wanna call it. i don't like that. WHY the hell would the subs do that when i pop the trunk, with the key in the ignition? it makes no sense. would it be because i have the stock radio and for some fvcked up reason it screws things up? I mean wtf the stock sound system is perfectly fine I dont want to spend another $300+ just for a stupid tackyass head unit and/or speakers.

 

[DurocShark]

Sounds like the amp needs to be grounded better ... Or it's directly wired to the ignition instead of through a relay.

 

[Platypus]

Does it happen when the stereo is off and you're driving around? Sounds like he didn't ground it right. At any rate why the hell would you put two 12"s in a Lancer?!

 

[zCypher]

Originally posted by: CorporateRecreation
Does it happen when the stereo is off and you're driving around? Sounds like he didn't ground it right. At any rate why the hell would you put two 12"s in a Lancer?!

Is that a sarcastic question? if so STFU. otherwise elaborate. i put them in cause i wanted to have those subs set up in my car, is there a problem with that? the way you said it, sounds like the typical anti-riceboy response. omg subs in a civic or a sentra wah wah wah! would it have been OK if I set up the subs in my camaro instead?

But, to answer your question: I put 12 inch subs in the lancer because i drive the lancer every day, and i wanted more to the sound system without going overboard and changing everything -so I just added. The sound system as I've said is already very good, but I wanted to be able to crank the volume up a bit higher without having to reduce the bass in order to keep the speakers in good shape. now I can play the music at whatever volume I want and keep as much bass as I want.

anyway... so this could be because it's not properly grounded? or he wired it directly to the ignition? I guess it could be one or the other, or both? in any case I just wanted to hear your opinions on the matter while i try to get a hold of him. Otherwise everything's beautiful, no complaints - but i can't let something like this slide..

 

[zCypher]

Originally posted by: CorporateRecreation
Does it happen when the stereo is off and you're driving around? Sounds like he didn't ground it right. At any rate why the hell would you put two 12"s in a Lancer?!

Oops, didn't answer the first part : it happens when the stereo is off, when the car is off but the key is in the ignition (just turned a bit so you have power but not engine on).

i haven't tried it when im driving around because i have to open the trunk in order for it to happne.

basically it occurs like this :
1) pull in driveway or wherever
2) shut off stereo
3) shut off engine
4) open trunk
5) noise occurs
6) optional: turn on stereo - result : noise subsides and music plays normally. closing trunk again has no effect on the noise.