wiring in sub amp to factory stereo
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=65585
Printed Date: May 03, 2024 at 1:01 PM
Topic: wiring in sub amp to factory stereo
Posted By: gcorrea
Subject: wiring in sub amp to factory stereo
Date Posted: November 04, 2005 at 12:33 AM
i want to wire in a sub amp(2 channel in stereo mode)into the factory stereo. what would be my best choice for a line level converter, can i tap into the rear speakers? can i keep the rear speakers fuctional?
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gcorrea
Replies:
Posted By: gcorrea
Date Posted: November 04, 2005 at 12:34 AM
its a 2005 chevy malibu, new body style.thanks.
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gcorrea
Posted By: menace2sobriety
Date Posted: November 04, 2005 at 1:11 AM
a lot of amps come with high level inputs so depending on the amp you may not need one. scoache makes some good ones if you need one. and yes you can tap into the rear speakers and keep them fuctional. some dont like my arc-audio so i use a mtx 202 for my high level input in my wifes car.
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Posted By: hobobasher
Date Posted: November 04, 2005 at 9:49 PM
you mean scosche thats the site for you go take a look around if you cant find the line converters let me know and ill give you the link directly to the page with a selection of them and then choose what works best for you Paul p.s good luck
Posted By: youngone
Date Posted: November 04, 2005 at 10:51 PM
what you need is a line out converter. hook it up to the head unit signal going to the rear speakers. your going to need a 12v source for the remote turn on. i am going to do the same thing for my moms car a vw pasat.  ------------- Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend
On the12volt you give some info and you get in
Posted By: gcorrea
Date Posted: November 04, 2005 at 10:58 PM
the remote turn on is the easy part, choosing which converter, well....
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gcorrea
Posted By: hobobasher
Date Posted: November 04, 2005 at 11:08 PM
gcorrea if you need help choosing which is best for your application let me know what your aim is and ill help you figure out which might be better for you if youd like i think your best bet is Part Number: LOC80 it might be better but im not sure take a look there 2 of them id reccomend the other is Part Number: LOC500B look at both tell me what you think im watching the thread closly so ill try and reply asap
Paul
Posted By: infoaudio01
Date Posted: November 04, 2005 at 11:55 PM
also take into consideration that when "tapping" into the rear speakers using a LOC you may get an echoing effect. If this happens use a diode on either the positives or negatives of the LOC. It wont matter which way the cathode stripe is facing as long as it is the same on both speaker lines.
Posted By: gcorrea
Date Posted: November 04, 2005 at 11:59 PM
did the dealer search and i have one about 2 miles away, which would you recommend using. all im doing is adding a two channel amp (old coustic amp 460) rated at 100 watts rms per channel in stereo mode to push a pair of 12 inch fosgate punch z subs rated at 150 rms. 4 ohm stereo.
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gcorrea
Posted By: hobobasher
Date Posted: November 05, 2005 at 7:04 AM
Part Number: LOC80 i think is your best bet basicly for ease of installation and if you do it right your rear speakers will still be functional and run your subs at mono not stereo they dont hit evenly if you have them in stereo i learned that on here and i experience it they hit much better in mono
Posted By: gcorrea
Date Posted: November 06, 2005 at 12:00 AM
cant do mono, single 4 ohm voice coil if i wire in parallel the amp cant handle a 2 ohm mono load, if i wire in series i end up with a 8 ohm load. i have two amps, but each amp bridged would push about 250 watt rms, and the subs are only 150 rms.
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gcorrea
Posted By: hobobasher
Date Posted: November 06, 2005 at 12:03 AM
oh ok now i understand yes the way your wiring them they will hit the same i thaught you were going parallel ok i see yes then your doing it the right way sorry i misunderstood anyways tell me how you make out with the line converter ive never used on personally ive used them in friends cars but never my own so im interested to hear about the result
Posted By: geepherder
Date Posted: November 06, 2005 at 9:37 PM
infoaudio, Do not put any diodes inline when connecting an LOC. An audio signal is basically an AC waveform of sorts, so if you install a diode, you'll get a pulsating DC signal to the amp- only half of the audio signal. This makes no practical sense. ------------- My ex once told me I have a perfect face for radio.
Posted By: hobobasher
Date Posted: November 07, 2005 at 4:51 AM
not to be rude but may i ask why anyone would use a diode inline wiht a loc i wouldent undetstad the logic behine using a dioe since it woulent be needed but im sure somepeople have done that before but i dont see why they woul think it might help
Posted By: geepherder
Date Posted: November 07, 2005 at 8:02 PM
Maybe he thought it would "isolate" it from the speakers- but it would actually cut your audio signal in half and sound horrible.
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My ex once told me I have a perfect face for radio.
Posted By: hobobasher
Date Posted: November 07, 2005 at 9:12 PM
oh ok i get it now thanks i didnt know why out of no where you came out wiht that but yeah thats a really good point thanks for bringing that up it will just tap into the rear speaker wires and you will be all good but yeah definatly no diodes that a big no no thank you for clearing that up
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