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-   -   Sub won't work!?!? (http://www.toyota-supra.info/forums/car-audio-and-alarms/18686-sub-wont-work.html)

jtown125 02-22-2011 09:02 PM

Sub won't work!?!?
 
I hooked up everything last night to wire up my amp and sub, amp turns on but nothing is happening on the sub side.
Ground is good.
Rca's are good.
Remote wire and 12v battery wire are all good as well.
Speaker wire from amp to sub is good (works in other car)
What am I missing?

Sonyps307 02-23-2011 12:52 AM

Do you have a inline fuse for the 12v's

jtown125 02-23-2011 02:13 AM

All fuses were good. Battery amp n inside dash fuses. I'm running out of ideas. Not sure what else would cause the problem

cre 02-23-2011 07:33 AM

If your car had the premium sound package there's an amp under the driver's seat you're going to have to wire around.... or was it under the passenger seat?

Are you using the stock wire harness?

jtown125 02-23-2011 08:00 AM

The guy that put the new engine in ran a new harness. What made it a premium sound package?

cre 02-23-2011 10:25 AM

The premium package went through a couple evolutions, but basically there was an external amp which was integrated with the upgraded head unit, and the car had 2 (or more in later models) additional speakers.

I'm going to go out on a limb here and suggest that the guy who worked on your engine only put in a new engine harness not replacing all 7 (or however many) harnesses there are threaded all across the car.

Look in the TEWD and look in your car for an amplifier.

jtown125 02-23-2011 10:33 PM

Yes just the engine harness and I have like six speakers n the car so it might be. And the amp would b hooked up with the head unit anyway right? If I was to solder the radio wires directly to the stock wires would that bypass it? I will check out the wiring diagrams n see what I can come up with. What does the amp have to do with the subs not hitting?

cre 02-23-2011 11:00 PM

Oh, sorry... So the rest of the system works, just not the subs? Does the amp have a signal line and if so, did you remember to connect it and is it the right signal type for the deck's trigger (positive or negative)?

jtown125 02-23-2011 11:15 PM

I hooked up 2 different head units with sub outputs with neither of them working. Both had setting for amp install and sub settings. (I didn't have to manually set up anything for the amp or sub to work with the head unit) The only thing I can really think of is something in the stock harness that is making it mess with the rca's or something to that extent. The only other thing I can mention is that the right front speaker goes in and out on occasion. (not sure if that has anything to do with it or not)

And the signal wire (remote wire??) yes...I hooked it up to the stock power antenna wire...(sub will only hit when radio is on, NOT CD, AUX, and etc...)

cre 02-23-2011 11:28 PM

With much more specific info no one is going to be able to do a lot more than guess (unless they want to cover an install from scratch... I haven't the patience). Where is the Amp getting power? Have you verified it is getting power and enough current? Does the amp have a remote/signal line? If so is it connected? If so do you hear the amps power relay kick over when the remote signal is given by the head unit? Do the head units' settings have the pre-outs turned on by default? Running wires to the Amp is nothing, if you couldn't manage that you should be changing light bulbs so I doubt that's the issue. Is the amp well grounded to a bare metal location which isn't isolated by paint?

jtown125 02-23-2011 11:40 PM

Most of that I answered by editing my last post. 15 v at power to amp.
0 ohms at ground. and 14 v at remote wire...amp setup is good. and yes the default settings for the sub were setup...i checked.

cre 02-23-2011 11:45 PM

Quote:

Originally Posted by jtown125 (Post 92742)
(sub will only hit when radio is on, NOT CD, AUX, and etc...)

Wait.... what? Are you saying the subs do work part of the time? If the remote/signal line is a gnd input try grounding it to the chassis and see if it functions continuously; And, if it's a positive signal then try connecting it to a full time positive signal.

Post the make and models of what you're running (dammit)... :frown:



EDIT: Oh, and the speaker going in and out is more likely bad wiring. If you're using the stock wires for the regular speakers there may be a break in the section which crosses from door to chassis.

You're not using any of the stock wiring for the amp and subs, are you?

jtown125 02-23-2011 11:54 PM

None of the stock wiring touches the amp or sub wiring. The cd player had a harness kit put into it to plug up to stock harness (remote wire is ran into the kit between the cd player and stock harnesses)

And the sub doesn't hit at all, I have it set up to where it will only hit when the radio is turned on (when the antenna gets power, the antenna doesn't come up with the cd setting or any aux setting)

(make and model in sig)

cre 02-24-2011 12:14 AM

Quote:

Originally Posted by jtown125 (Post 92747)
(make and model in sig)


That's a joke right?

Make and model of the stereo and amp............?

jtown125 02-24-2011 12:24 AM

lol :)

panasonic cq c9901u head unit
and a legacy predator 1000 watt amp
and a boss diablo 800 watt sub 10"

cre 02-26-2011 09:07 PM

Hey, been busy and haven't been able to look up anything on those components yet. Had any luck? If you've got a small radio with RCA inputs I suppose you could try running the sub wires to that to see if it's getting a signal. Have you tried new cables? Have you checked the gain and crossover settings on the amp? Have you checked any fuses in the amp?

jtown125 04-22-2011 10:26 PM

hey cre (two months later lol...)

so i hooked the remote wire up to the ground wire coming from the stock harness...and it worked. depending on what system you had in the car depended on whether you had a positive or neg remote wire.

cre 04-24-2011 06:51 PM

Gee.... I thought I covered that... somewhere like post #12.... must have been imagining it. :stickpoke

Glad you got it figured out... 2 month long problems usually involve me pawning the problem off onto someone else while I just stand by and "supervise". :bigthumb:


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