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Old Mar 30, 2006 | 04:00 AM
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Default sub not working

ok Ive tested everything and I cant get this to work.. Im getting very little sound out of the sub.. Sub,amp.ground,rca cables are all working.. I think its a setting in the HU but dont know what the settings are going to be set at.

http://www.pioneerelectronics.com/pn..._50064,00.html
its a avhp6400. I know its old but I bought it when I first got my car back in 03. And still works perfect.

You can use my log in info......
albertgarciajr01@yahoo.com
garcia


what is the difference between the 3 settings i can select?

BTW its a 10w7 and JL 500.1 amp


I hope you guys can help so I dont have to sit on the phone all day tomorrow.
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Old Mar 30, 2006 | 12:21 PM
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Are the RCAs connected to the sub output? If so make sure the sub output is on on the headunit (sec 11 page 57 of the manual according to the website).
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Old Mar 30, 2006 | 12:59 PM
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Originally Posted by vetterlatethannever
Are the RCAs connected to the sub output? If so make sure the sub output is on on the headunit (sec 11 page 57 of the manual according to the website).


Additionally, on page 56, it tells you how to select, phase of the sub, level +/- 6 dB and frequency cutoffs.

In order for it to work, you must turn on your subwoofer output to on.

RCAs (rear) must be connected to your amplifier. Now, unfortunately, your deck does not allow you to use rear speaker outs and rear RCAs separately. When you turn on your subwoofer, you change both rear outs and RCAs to the sub control...You should use full speaker range for the rear, and control the sub frequency at the amplifier.

Also, now that I think about it. Does your amp have a crossover, make sure you select lowpass, what about a gain control (input/output), my amps have both type.

Hope that helps and makes sense.

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Old Mar 30, 2006 | 02:19 PM
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From: Angleton Tx
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Originally Posted by vetterlatethannever
Are the RCAs connected to the sub output? If so make sure the sub output is on on the headunit (sec 11 page 57 of the manual according to the website).
yes they are connected.
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Old Mar 30, 2006 | 02:41 PM
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Originally Posted by litnrod


Additionally, on page 56, it tells you how to select, phase of the sub, level +/- 6 dB and frequency cutoffs.

In order for it to work, you must turn on your subwoofer output to on.

RCAs (rear) must be connected to your amplifier. Now, unfortunately, your deck does not allow you to use rear speaker outs and rear RCAs separately. When you turn on your subwoofer, you change both rear outs and RCAs to the sub control...You should use full speaker range for the rear, and control the sub frequency at the amplifier.

Also, now that I think about it. Does your amp have a crossover, make sure you select lowpass, what about a gain control (input/output), my amps have both type.

Hope that helps and makes sense.


ok so its got to be on the phase part right? Thats the only way I got sound but it had to be on +6.
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Old Mar 30, 2006 | 03:25 PM
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From: Angleton Tx
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well I wont be buying JL audio anymore.. I called them and the only thing he could tell me was to take it to where i got it from so they can test it. He didnt ask any questions about whats going on with it. So I have to drive my *** 1.5 hrs to drop it off if i cant figure it out...
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Old Mar 30, 2006 | 03:27 PM
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I know these might seem like silly things to check but I don't know if they have been checked already so...
What is the gain at on the amplifier?
Also, if the low pass is on on the amplifier and the high pass is on from the deck that would cancel out making the output a muted channel. Try turning the filters off on the amp first and see if the sound increases.
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Old Mar 30, 2006 | 03:55 PM
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ill try that.. I couldnt find pioneers number so beats me on the HU... Its sad that my system in my fishing truck works better then this one... And i have 100 bux in everything...
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Old Mar 30, 2006 | 04:30 PM
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Originally Posted by wicked 98z
ok so its got to be on the phase part right? Thats the only way I got sound but it had to be on +6.

Not necessarily...I agree on the part about low pass and high pass if alternated would be a significantly reduced signal.

1. Check the rear RCAs are on the amplifier, not the front RCAs. Am I correct there are only 2 sets, i.e. front and back. Or is there a subwoofer set of RCAs as well?

2. Check the gain control on amplifier.

3. What amplifiier are you using? Maybe we can help out there.

4. Does it have a built-in crossover? What is it set at?

5. Do you have an extra speaker laying around, maybe a stock speaker in the garage. Put the HU output to full range, and see if you get any sound out of the speaker connected to the amplifier. Check the amplifier crossover as well, as it should be set to full range as well...for this check.

Could be blown sub or amplifier? of course worst case scenarios.

Hope it helps.
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Old Mar 30, 2006 | 04:58 PM
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did you ever try what i suggested in your reply to your pm? try hooking up an external source (i.e. ipod or home dvd player) to the rca inputs on the amp.

this will narrow down the area where we have to concentrate on (if you get sound then it's the h/u....if the problem is unaffectd then it's the amp or sub)

was the setup ever working? if not, are you sure you wired the voice coils correctly?
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Old Mar 30, 2006 | 05:44 PM
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Originally Posted by scott_fx
did you ever try what i suggested in your reply to your pm? try hooking up an external source (i.e. ipod or home dvd player) to the rca inputs on the amp.

this will narrow down the area where we have to concentrate on (if you get sound then it's the h/u....if the problem is unaffectd then it's the amp or sub)

was the setup ever working? if not, are you sure you wired the voice coils correctly?


everything is working.. RCAs work.. I tested them on my dvd player.. But i make some phone calls 2 pioneer and JL audio....

1st I will never buy another JL audio product. They suck as far as customer service.. BUT I got a way to wire up the subs and they work.. The only catch is I have to ground the RCA cables to the radio.. Thats what I was told to by Pioneer guys..I didn’t believe him till I did and the subs started to work... So then I called back JL audio and they said the radio was messed up and i shouldn’t have to do that... My question is WHAT IN THE WORLD DO I DO? It works when its grounded
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Old Mar 30, 2006 | 07:19 PM
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i've seen that one other time, i have no idea what it does though. :-\
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Old Mar 30, 2006 | 07:31 PM
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That just does not seem right. The chassis of the radio coupled with the normal grounds in the car should be plenty to allow the RCA's to send a proper signal. IMO there has to be some other sort of problem and this is a bandaid to correct it (the grounding of the rca's) Either the amp is not getting a proper ground, the ground at the HU itself is not right, the RCA's are bad, or all of the above

One other thing, it may be that the ground point where the RCA's connect to the amp is bad, or miswired somehow and the connection is not sufficient enough to get the signal to pass through it. (IE the circlular portion of the RCA terminal itself is the ground, and the connection at the amp is either not making contact, or is not wired properly internally)

G'luck bro
Fej

Last edited by fej; Mar 30, 2006 at 08:52 PM.
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Old Mar 30, 2006 | 07:37 PM
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Unfortunately Something is out of whack.
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Old Mar 31, 2006 | 12:29 AM
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Originally Posted by fej
That just does not seem right. The chassis of the radio coupled with the normal grounds in the car should be plenty to allow the RCA's to send a proper signal. IMO there has to be some other sort of problem and this is a bandaid to correct it (the grounding of the rca's) Either the amp is not getting a proper ground, the ground at the HU itself is not right, the RCA's are bad, or all of the above

One other thing, it may be that the ground point where the RCA's connect to the amp is bad, or miswired somehow and the connection is not sufficient enough to get the signal to pass through it. (IE the circlular portion of the RCA terminal itself is the ground, and the connection at the amp is either not making contact, or is not wired properly internally)

G'luck bro
Fej

thats the same thing i was thanking...But I called back to double check and another guy told me the same thing... It has something to do with the HU.. I guess since its older or something. Sure enough I found a way to ground the wires to the HU and its working now perfect. The amp is wired right.. The RCA cables are getting the right volts.. I double checked EVERY connection with the volt meter and it was right on.. Hopefully the guys at pioneer just didnt tell me that... I hope when i get a new HU i dont have to do this again..
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Old Mar 31, 2006 | 12:46 AM
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Cool hopefully it continues to work for you without issue.

Fej
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Old Mar 31, 2006 | 06:37 PM
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Originally Posted by fej
Cool hopefully it continues to work for you without issue.

Fej

yeah me to.. I hate to giggre rig the corvette.. maybe ill pick up the Z1 when it comes out..
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Old Mar 31, 2006 | 07:13 PM
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i remember having to have to ground something in one of my old old pioneer h/u. This was about 4-5 yrs ago. Was the only way I could get it to work. Good to hear that its finally working for you. I guess, if yo have to ground it, thats the way its supposed to be and you dont have to think of it *** jerry-riggin the vette. But as a crappy h/u in a vette I am waiting on replacing my Bose when I get into some more money
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