Head unit question
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=39873
Printed Date: May 17, 2024 at 9:29 PM
Topic: Head unit question
Posted By: stiverp
Subject: Head unit question
Date Posted: September 27, 2004 at 9:46 PM
I have a 2000 Ford Excursion and have ran all new wiring and speakers. Was planing on leaving the head unit/cd changer in place and do a pick up with a scosche kit. Is there any problems with leaving the head unit unwired to speakers? Every time I turn up the volume the Bass ( Memphis 1000d and 2- 12" memphis hp's) fades in and out and the frequency seems wrong. Tried audiobahn eq6 and electronic cross over, neither work out the problems. If there is no solution and I need to replace the head unit, is there a unit that is compatable to the CD changer. Thanks for your help. Stiver 2000 Excursion Limited Powerstroke 4x4. Audio - 2 pair audiobahn 5x7 and kicker tweeter seperates overhead w/ crossfire 302, 4 pair audiobahn 5x7 w/ crossfire 602, pair Memphis 12" HP's sealed downfire custom box w/ memphis 1000d all crossed with audiobahn EQ6.
Replies:
Posted By: Velocity Motors
Date Posted: September 27, 2004 at 10:12 PM
What's running your speaker's now ? You mentioned that you left the HU unwired ? Where did you get the RCA input signal from for the Memphis amp ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: stiverp
Date Posted: September 27, 2004 at 10:17 PM
I'm using a scosche line out converter going to audiobahn eq6 then to the 2 crossfire amps on the audiobahn 5x7's. eq6 sub out to the memphis 1000d for the 2- 12" hp's. no speakers are actually hooked directly to the fac. head unit. Stiver 2000 Excursion Limited Powerstroke 4x4. Audio - 2 pair audiobahn 5x7 and kicker tweeter seperates overhead w/ crossfire 302, 4 pair audiobahn 5x7 w/ crossfire 602, pair Memphis 12" HP's sealed downfire custom box w/ memphis 1000d all crossed with audiobahn EQ6.
Posted By: Velocity Motors
Date Posted: September 27, 2004 at 10:32 PM
Does your model Excursion have the OEM amp ? If so, where did you grab the wires for the LOC from ? Before or after the amplifier ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: stiverp
Date Posted: September 27, 2004 at 10:43 PM
They are tapped at the HU before the amp now. I also tried using just an electronic x-over on the subs tapped before the rear speakers. I'm not really sure if this vehicle has an OEM amp. I can't seem to find a wiring diagram for a 2000 limited excursion. thanks, Stiver 2000 Excursion Limited Powerstroke 4x4. Audio - 2 pair audiobahn 5x7 and kicker tweeter seperates overhead w/ crossfire 302, 4 pair audiobahn 5x7 w/ crossfire 602, pair Memphis 12" HP's sealed downfire custom box w/ memphis 1000d all crossed with audiobahn EQ6.
Posted By: Velocity Motors
Date Posted: September 27, 2004 at 11:03 PM
How many plugs were on the back of the OEM HU ? If there is only one, then you DO NOT have an amplifier. If you have more than one plug, then you have an amplifier. What do you have the LOC gain set at ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: stiverp
Date Posted: September 28, 2004 at 11:34 AM
I tried adjusting the gain on the the LOC, EQ, and the amp's. I've checked the wiring polarity. I've been building custom stereos since 1988 in my vehicle and for friends. This is the first one I've had this much trouble with. Oh, also the bass comes and goes. Could it be possible that I'm not sending enough current ? Stiver
Posted By: jeffchilcott
Date Posted: September 28, 2004 at 6:15 PM
if you are running that much equipmemnt I would just give in and get a new head unit the power from true rca's will improve the sound overall and should fix your problem and I think you will be much happier
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: stiverp
Date Posted: September 28, 2004 at 6:34 PM
Is there a HU that will operate my OEM changer?
Posted By: forbidden
Date Posted: September 28, 2004 at 7:44 PM
Doubtful. This is probably the last year of the changer with the MP3 rage going on. I too would replace the factory head with a aftermarket cd player. If you really want the changer, get one while you still can. There was a question asked above that either I missed or was not answered. This was how many plugs on the back of the factory radio? If there are two plugs then chances are you have tied into the wrong wires on the back of the factory head to drive the LOC.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: stiverp
Date Posted: September 28, 2004 at 7:59 PM
It has 2 plugs on the back. One large and one small. I used what appeared to be the speaker lines on the large plug
Posted By: forbidden
Date Posted: September 28, 2004 at 8:18 PM
Chances are that you have grabbed a signal from a preamp line. This will probably feed a signal to the LOC that is too hot to use. Either find the hidden factory amplifier and tie into the speaker wires after it or purchase a Audio Control LC6 (or other interface) which can take that "hot" of an input signal and replace the LOC with it. ------------- Top Secret, I can tell you but then my wife will kill me.
Posted By: Velocity Motors
Date Posted: September 28, 2004 at 9:28 PM
Thanks Rob, that's what I was trying to get from him  ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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