head unit

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=132202
Printed Date: May 12, 2025 at 1:44 AM

Topic: head unit

Posted By: bdcadillac
Subject: head unit
Date Posted: September 16, 2012 at 11:16 PM

I bought an open box Jvc KD a525, all the wiring is correct. I also installed some jl 5.25 speakers in the front doors using the existing stock wiring. There are stock 6x9s above the rear seat. As i turn the volume up on the deck past 25 there is no distortion it sounds good. If i go past 26 it seems like there is not enough power for the deck the volume degrades and sounds like crap. I have a volt meter on my Cadillac and its running at anywhere from 13.2-14v's. I have no amps hooked up just the head unit. And I’m using the existing wiring i don't have any idea what the problem could be. It sucks because i like it loud and clean and it sounds terrible. Does anyone know what the problem could be? Should i do a big three on a 1990 Cadillac Seville??? IDK PLEASE HELP.

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Replies:

Posted By: itsyuk
Date Posted: September 17, 2012 at 12:14 AM

always do the big three when the road is leading to volume..

buy some decent efficient 6x9s... i like infinitys

buy a quality 4x50 or more amp ... i like JL.

if after that you fel the ned for more bass, buy a sub and amp

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yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.

Posted By: bdcadillac
Date Posted: September 17, 2012 at 12:54 AM

I have plans for 2 12's but for my friend is going to sell me some jl 6x9's. the big three even for just the deck problem..its just frusturatingss grrrr posted_image

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Posted By: itsyuk
Date Posted: September 17, 2012 at 1:12 AM

big three most likely wont help the radio put out more power ....its probably doing the best it can.

you need more power.

the JL ovals will be a great addition, epecially if you hook a good amp to them.

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yuk
quiet rural missouri, near KC.
If your system moves you physically and not emotionally, you have wasted your money.

Posted By: howie ll
Date Posted: September 18, 2012 at 12:53 PM

2 x 12"? Check the laws of physics and wavelength.
You might use them in a Winnie. Do you see where I'm going here.
Also it's bad practice to mount 6X9" in the rear then shove in a sub, sound wise it's a mess with all sorts of sound wave cancellation effects.
Big 4th. rule, if you have a sub, forget big speakers at the rear.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Posted By: racerjames76
Date Posted: September 18, 2012 at 2:11 PM

Number wise what is the max volume the radio can put out? On the lower end radios it is typical to notice power dropout at 3/4 max volume more than the higher end radios. ALL radios drop power at 3/4 (roughly) max volume. Most factory radios are detuned so max that you can control is actually 3/4 of its potential power output. Basically to keep you from blowing up your radio and getting a new one from them for free. lol

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To master and control electricity is perfection. *evil laugh*

Posted By: tommy...
Date Posted: September 18, 2012 at 2:29 PM

If you are putting decent 6x9's in the rear and a Sub, Provide an enclosure for the 6x9's. Will help some...

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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!