Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 8 of 8
  1. #1

    Member Sales Rating: (0)

    Join Date
    Jun 2006
    Posts
    2

    Question Adding an Amp to a stock HU - Help!

    Ok, so I have a 2000 Lincoln LS which has a stock HU and 4 speakers (one per door). I've decided to replace the speakers with the Alpine S-type speakers and adding a 4ch Amp, as well as adding some subs and a mono amp to power those up. My problem is: Since I do not want to replace the stock HU (got a 6cd changer and a stearing wheel controlls), at first I though of running wires from HU (as signal wires) back to the trunk (to the amp(s) ) and then run new wires to each speaker direcly from the amp. Then I thought of just running wires from the HU to the AMP(s) and back to where the HU is and connecting them to the harness and using the original wiring to get signal back to the speakers. (I think it would save me a lot of time). Which way would be better...and how big of the difference would it make (I assume rewiring everything would be better... just not sure how noticable). Also, should I run speaker wires from the HU to the amp ??? or convert them as close to the HU into the RCA cables and run those??? Not sure which would provide more shielding and pick up less noize... Here is some additional info about my car and system:
    There is no factory amp in the car, the speakers that I getting will be running at 40rms (250peak) so not very high power, and there is no RCA outputs in my HU and the amps have both high and low signa imputs:

    Here is what I am getting:

    Alpine MRP-F240 40w x 4 car amplifier
    Alpine SPS-57C2 5"x7" 2-way 250w car speakers
    Boss Audio GT1000M 850w
    2x 10" JLs for the custom closed box.

    Any help would be very appreciated!!! Thanks in advance!!!

  2. #2

    Member Sales Rating: (1)

    Join Date
    Mar 2004
    Location
    College Station, TX
    Posts
    7,132

    Default

    You can get some line out converters from www.davidnavone.com. They are some of the better converters you can get and theyre very cheap. My personal recommendation would be getting a rockford fosgate 3sixty.1. Its a device thats made for keeping your stock radio but still being able to tune it like you would with a more high end head unit. This unit accepts speaker wire inputs so you will not need any line out converters.

    If youre only running 40w rms to each speaker, the stock wiring will be fine, just run speaker wire from the deck to the amp.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it

  3. #3

    Member Sales Rating: (0)

    Join Date
    Aug 2005
    Location
    20,000 leagues beneath the sea
    Posts
    78

    Default

    What ever you do don't let Cody know that you are getting JL amp.:D

    JK Cody, I couldn't resist.
    Alpine 9855 hu
    Polk/Momo MMC 460 (Rear)
    Polk/Momo MMC 6500 (Front)
    Polk/Momo MM 2104 Sub
    Amp: JL 500/5
    Wires: Street Wires
    Sat Radio: Sirius PNP
    ______________________
    Home
    Kenwood CD 425M 200 disc cd changer
    Denon AVR-2801 reciever
    Mitsubishi HS-U577
    Toshiba -SD1700 DVD player
    Klipsch Speakers
    Center: RC-7
    L&R:KLF-20
    Surrounds:RS-3
    Sub: KSW-15

  4. #4

    Member Sales Rating: (1)

    Join Date
    Mar 2004
    Location
    College Station, TX
    Posts
    7,132

    Default

    jl subs are bad enough ;)
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it

  5. #5

    Member Sales Rating: (0)

    Join Date
    Mar 2006
    Location
    Bay Area, CA
    Posts
    31

    Default

    On the same note, if your Alpine amps have high level signal inputs, you can utilize that as well.

    Are your rear speakers easily accessible? Here's a nice little trick:

    If you used a harness, you can loop your front speakers to the back speakers at the head unit. When you get to the back speakers, unplug it, and wire those as front speakers on the amp. Then run new speaker wires for the back speaker. It's clean, and you don't have to worry about running speaker wires through the car.

  6. #6

    Member Sales Rating: (0)

    Join Date
    Dec 2003
    Location
    Chattanooga, TN
    Posts
    11,820

    Default

    Dont buy anything from David Navone!!!

    Go to Radio Shack and pick up a line level converter. Same thing.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  7. #7

    Member Sales Rating: (0)

    Join Date
    Jun 2006
    Posts
    2

    Thumbs up RE: Install

    Thanks for all of the response!!! I've done a lot of research on bunch of forums... and I am leaning toward just running speaker level wires from my HU to the amp using the LOC which is build into my alpine amp and then running the speker wires back to the front of my car and connecting to the harness. Since I am only running a 40rms for each speaker and my car is newer w/ the pretty good stock system I think the original wiring will be enough. I am suppose to get my stuff in the mail today at some point but I am leaving for the long weekend so I wont get to do the install untill Monday or Tuesday. I will post some photos once I am done. :)
    Thanks again!!!

  8. #8

    Member Sales Rating: (0)

    Join Date
    Jul 2005
    Location
    Saint Louis
    Posts
    30

    Default

    Quote Originally Posted by rastlin
    I've done a lot of research on bunch of forums... and I am leaning toward just running speaker level wires from my HU to the amp using the LOC which is build into my alpine amp and then running the speker wires back to the front of my car and connecting to the harness.
    I don't know if you saw my post in another forum ( http://www.caraudioforum.com/vbb3/sh...d.php?t=247362) as that was your first post but here's what I wrote:

    I would get two harness adaptors (the Metra 70-1771 and 71-1771 OR the Aamp Of America's harness adaptors BHA1771 and BHO1771) to where now you will have an input and output plug for the radio.
    Get some wire called speedwire also from Aamp of america in the 9 conductor version and run two lengths of these from the radio opening to your amp location. One 9 conductor will wire to the outputs of the radio AND the power antenna wire and this will then go to the amp and if the amp has high level speaker line inputs use those. The power antenna wire will connect to the amps turn on terminal. If the amp does not have high level inputs put the line output convertors back by the amp (less chance of induced noise compared to having them up front witj long rca's to the amplifier's input).
    Now use the other 9 conductor and use that from the output of the amplifier to connect to the speaker wires on the harness adaptor in the radio opening in the factory loom.
    Take both harness adaptors and connect the battery 12 volt from one to the other (yellow to yellow), the accessory wire from the one to the other (red to red), the ground from one to the other (black to black), the illumination wire from the one to the other (orange to orage), and so on (orange/white to orange/white).
    Run a fused power wire from the battery to the amp location and ground the amp and you should be good to go with amplifying the system.

    For the speakers, get the metra harness adaptors for them also (it's like a 72-???? number). It makes it nice to be able to plug into the funky factory terminal end and then have the proper sized terminals on the wires of the adaptor to where the polarity is kept proper.

    Jim
    1973 Nova Custom,1974 Nova Spirit of America, 1977 Nova Hatchback,1973 Nova Pro-Street

    http://hometown.aol.com/krystaldesigns/page1.html
    1974 Chevrolet Nova Spirit Of America Restoration

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Similar Threads

  1. Amp Education for the New Guy
    By Holydoc in forum Electronics
    Replies: 19
    Last Post: 10-02-2005, 10:53 PM
  2. Looking for amp opinions...again...
    By audiobliss in forum Car Audio & Electronics
    Replies: 30
    Last Post: 09-24-2005, 01:28 PM
  3. AMP and SUB wiring questions...
    By iLLz in forum Car Audio & Electronics
    Replies: 2
    Last Post: 08-08-2005, 01:26 AM
  4. A Few Questions for Those Who Know
    By skijake in forum Car Audio & Electronics
    Replies: 18
    Last Post: 04-26-2004, 09:33 AM
  5. Ok so why do i have an external amp?
    By faster100 in forum Electronics
    Replies: 24
    Last Post: 01-07-2003, 07:08 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts