Bavarian Soundwerks
Results 1 to 4 of 4

Thread: E46 M3 Harmon Kardon system replacement - help needed!

  1. #1
    Join Date
    Jan 2018
    Location
    Newport Beach, CA
    Posts
    5
    My Cars
    E46 M3 Convertible

    E46 M3 Harmon Kardon system replacement - help needed!

    Hi guys,

    So I have an '04 M3 'vert, with HK system, and I desperately want to replace the factory system, but i'm confused. I've found a head unit that I rate (a full 9" screen that doesn't require a huge bezel):

    https://www.ebay.com/itm/9-for-BMW-3...4AAOSwcOFaPG9q

    But I think that it lacks RCA line outs for amplifier support, hence why it says you may need an extension cable also for the speakers - I presume this is to bypass the amp and wire the speakers directly to the head unit - any ideas?

    Ideally I want to go with the above head unit, replace the HK amp, woofer and speakers, but still wire the speakers from the new amp, as opposed to running new looms or extensions to the front.

    Any advice or suggestions highly appreciated!

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    6,140
    My Cars
    2018 BMW M240i
    The factory amp, regardless of the Audi system, gets balanced differential signals from the head unit. The factory amp has built in crossovers, so installing an amp will require external crossovers.

    The factory head unit in every E46 sold in the USA is the same (for that year) regardless of the audio system.

  3. #3
    Join Date
    Jan 2018
    Location
    Newport Beach, CA
    Posts
    5
    My Cars
    E46 M3 Convertible
    Thanks for that Marco - how about the wiring, with external crossovers, can I add any head unit to and power the speakers via an amp, or does the head unit need RCA line outs?

  4. #4
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    6,140
    My Cars
    2018 BMW M240i
    I swapped out the factory amp in my old 330Ci with a JL 400/4. I chose this amp because it accepts balanced differential signals. JL has several amps that accept balanced differential signals. I mounted the new amp on a piece of MDF and bolted into the factory amp location. Id bought 2 3-way crossovers and 2 2-way crossovers (for the rear). I mounted the 4 crossovers on a piece of MDF and mounted it under the rear package shelf. I then spliced in wires to the chassis audio harness and hooked them up to the crossovers. Its fairly straightforward.

Similar Threads

  1. E46 E46 M3 Harmon Kardon full system for sale!!!!
    By Moosecakes in forum Interior Lighting & Body Parts
    Replies: 0
    Last Post: 06-13-2013, 07:14 AM
  2. FS: BRAND NEW rear e46 m3 Harmon Kardon speaker
    By andymilonkis453 in forum Car Audio & Electronics
    Replies: 0
    Last Post: 03-15-2012, 02:33 PM
  3. E46 M3 Harmon Kardon Stereo Upgrade
    By Kevlar in forum 2001 - 2006 M3 (E46)
    Replies: 18
    Last Post: 03-20-2011, 09:53 PM
  4. 1999 M3 Harmon Kardon Speaker Replacement Help
    By deebojones in forum Car Audio & Electronics sponsored by Bavsound
    Replies: 9
    Last Post: 04-16-2009, 04:25 PM
  5. Complete Set E46 M3 Harmon Kardon OEM Speakers
    By blackonblack3 in forum Car Audio & Electronics
    Replies: 0
    Last Post: 02-14-2009, 07:50 PM

Bookmarks

Posting Permissions

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