Modifing stock head unit - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th April 2006, 11:59 PM   #1
diyAudio Member
 
Join Date: Apr 2006
Location: Florida
Default Modifing stock head unit

Just wondering if anyone knows of a guide somewhere that would help me modify my stock head unit. I want to add line out jacks. I think it would just be a matter of finding the correct solder positions on the board before the signal is amplified.

Any ideas?

Thanks
  Reply With Quote
Old 7th April 2006, 01:42 AM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If the head unit doesn't have preamp level outputs, there may be no suitable signal in the head unit. The output ICs typically have high gain and therefore the signal they receive is typically very low. To drive a typical head unit's power amp IC to full power you only need ~1/2 volt. Although that's enough for some amps, it's marginal for others. You could build a preamp but unless you're using this as a learning tool, it's better to use a line converter.

If you can find the datasheet for the power amplifier IC, it will tell you which pins are the input for the chip.

Bear in mind that one small mistake could be very costly. There are few repair centers for OEM head units and they have no mercy on you if the deck is out of warranty (going into it will void the warranty). Don't try to do this unless you can afford to repair or replace the unit.
  Reply With Quote
Old 7th April 2006, 09:54 AM   #3
diyAudio Member
 
Join Date: Apr 2006
Location: Florida
Ok, thanks for the reply. Sounds like it's going to be too much hassle; pity. Line converter it is.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Line in directly to stock head unit amp Mad Cow17 Car Audio 0 5th May 2008 02:34 AM
Upgrade stock head unit amplification IC groover1234 Car Audio 3 8th October 2007 07:09 PM
stock head unit quality? dalcorn Car Audio 1 12th May 2006 04:27 AM
Looking for a head unit with eq (and XO) xplod1236 Car Audio 41 20th April 2006 12:01 PM
Aftermarket head, stock amp Thorshavn Car Audio 6 10th June 2004 03:24 AM


New To Site? Need Help?

All times are GMT. The time now is 03:31 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2