1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

bose or not??

Discussion in 'A4/S4 forum(B5 Chassis)' started by bad-vw-boy, Mar 4, 2010.

  1. bad-vw-boy
    Offline

    bad-vw-boy Member

    Joined:
    Dec 28, 2007
    Messages:
    69
    Likes Received:
    0
    [Mar 4, 2010]
    How can i tell if my head unit is fully amped or part amped without removing the headunit, and also is the headunit fairly easy to remove??
    #1
  2. Ads

    Ads

    [Sep 20, 2014]

  3. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,289
    Likes Received:
    258
    [Mar 4, 2010]
    Yes very easy to remove you just need 2 vw/Audi removal keys on a concert unit and 4 on a symphony unit. You can get the keys from ebay. You would know if you had Bose as the speaker grills have the Bose logo, and there will be a Bose amp in the boot. The Audi head unit is capable of driving front & rear speakers, but you may find the head unit is only driving the front speakers with a small amp in the boot driving the rears.
    #2
  4. audinary
    Offline

    audinary Member

    Joined:
    Aug 2, 2008
    Messages:
    653
    Likes Received:
    0
    [Mar 4, 2010]
    Is there any great advantage in the rear speakers being powered by the silly little rear parcel shelf amp?

    Sounds like there might be a net benefit on letting the h/u power both sets of speakers?
    #3
  5. AndyMac
    Offline

    AndyMac Moderator Staff Member Moderator

    Joined:
    Jun 10, 2003
    Messages:
    9,833
    Likes Received:
    30
    [Mar 4, 2010]
    No Audi HU's can drive the rear speakers, they only have an internal amp for the fronts. Non Bose have the puny rear amp and Bose have all the speakers amped. You can only drive the rear speakers directly with an aftermarket HU.
    #4
  6. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,289
    Likes Received:
    258
    [Mar 4, 2010]
    Some of the older Audi HU drive the rear speakers, I have on in my A4, it's the Delta CC unit.
    Last edited: Mar 4, 2010
    #5
  7. audinary
    Offline

    audinary Member

    Joined:
    Aug 2, 2008
    Messages:
    653
    Likes Received:
    0
    [Mar 4, 2010]
    That's what I thought before I read the below post. I have the (doesn't sound anything like you're at a) Concert system.
    #6
  8. AndyMac
    Offline

    AndyMac Moderator Staff Member Moderator

    Joined:
    Jun 10, 2003
    Messages:
    9,833
    Likes Received:
    30
    [Mar 5, 2010]
    Well a few very early 96 models, but 97 on all have a rear amp if you're gonna be pedantic
    #7
  9. bad-vw-boy
    Offline

    bad-vw-boy Member

    Joined:
    Dec 28, 2007
    Messages:
    69
    Likes Received:
    0
    [Mar 5, 2010]
    Well I got the head unit out and found that in the back is one large and one slightly smaller red plug some sort of spade connector and the radio does this mean it's fully amped ?
    #8
  10. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,289
    Likes Received:
    258
    [Mar 5, 2010]
    Any chance of a picture of all the ISO connectors.
    #9
  11. AndyMac
    Offline

    AndyMac Moderator Staff Member Moderator

    Joined:
    Jun 10, 2003
    Messages:
    9,833
    Likes Received:
    30
    [Mar 5, 2010]
    You will have a brown speaker ISO connector on the non Bose system, this usually has only the middle 4 pins wired for the fronts. If you have no such connector and no connector plugged into the socket above the black power ISO then you have the Bose system which is fully amped and takes the feed to the amp from the long thin 20 pin mini ISO plug at the top of the connector stack.
    #10

Share This Page