Chris NottMonster Motorsport
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  1. #1
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    B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Hi,

    Can anyone tell me if these 6.5" component speakers will fit in the stock doors without an trouble?

    Also if anyone has any reviews on them I would be grateful as well.

    I think i'm right in saying that front & rears are both 6.5" ?


    Thanks for any help

    regards


    Jonathon

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Yes, you can fit pretty much any 6.5" speaker in the stock location, but you'll need to make some chunky adapter rings as the OEM speakers stick out from the chassis of the door by about 50mm.
    I cut 2 rings from 18mm MDF, about 1cm wide and then a bigger fitting ring to the shape of the OEM speaker from 9mm MDF so I'd be able to screw the whole lot to the door using the original holes.
    Glued and screwed the whole lot together. Used a bit of Dynamat round the hole in the door to provide a flat surface. The improvement is tremendous but you really need to add an amp to get the best from the Alpines. The tweeters just slot straight in with a bit of double sided foam tape wrapped round them.

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Also, nip down your local Audi dealer and buy a handful of the plastic clippy things that hold the door card on. They are designed so they break when you remove the door card (to prevent damage to the door card), I got through about 3 or 4 per door when I did mine. Luckily I already had a load of them from when I upgraded the interior to leather.
    Here's a pic of the OEM speaker so you can see what you're dealing with:

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Thanks Andy,

    I had no idea the speakers would need such large adapters. I'm quite handy with the Mdf so will follow your design for the adapter rings. I also wasn't sure where you mean't i should place dynamat?

    Basically the system is completely OEM at the moment and i have a kenwood PS971R H/U from my old car that i would like to put in. I had one attempt before but couldn't get it to work especially as it is a mask model with no buttons showing. I think it opens the mask on the ignition sense, but i had the ign. sense wire plumbed in for my Sony handsfree kit as i know audi's use the can-bus system; but still no luck. I'm thinking I'll just pay my local stereo shop to fit it now.

    Do you think the Alpine MRP-F240 would be best value for money? It says it can handle 50W RMS x 4
    It costs 95 new and the speakers are 80 a pair. I'm guessing i would need 4x 5m RCA leads to run from the H/U to the amp and then 4x High quality speaker wires for each speaker. Not forgetting i would need to run the Amp cable. Also how much does dynamat cost and how much would i need to buy to make it worthwhile using?

    Please let me know if I have got it wrong as I know nothing about how to make a good sound setup and I am on a limited budget.

    Thanks Andymac again for your help.


    Regards


    Jonathon

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Re: the Dynamat, I just used it to even out the chassis of the door. There a are a few bolt heads sticking out slightly where the MDF will meet the door panel, so I cut a ring of Dynamat stuck it to the opening and then cut away the high spots so that the MDF had a completely sealed flat surface to sit on. Some people go mad with the stuff and cover the whole inside of the car but unless you're going for competition spec then just small amounts in the right place is all you need. You can get a small roll from Halfords for about 15.
    For the head unit you'll need to splice both perm live & ignition on from the HU into a perm live. There is no ignition on feed behind the HU, so you either have to switch the HU off manually or have it go off with the engine.
    The F240 is actually 4 x 40wrms into 4ohms but that's plenty for cabin speakers.
    I found that 5m RCA's weren't quite long enough in my Avant as I'd run power down the drivers side so the RCA's had to go the long way round down the passenger side. I had one set that was 6m which was perfect then had to extend the other set by about 2 feet. The amp was bolted behind the rear right cubbyhole.
    One thing to be aware of is that by going aftermarket with an aftermarket amp you'll lose the sub in the boot unless you splice this into the rear RCA's somehow.
    I replaced the sub with a JL Audio unit & stealth enclosure so it wasn't an issue.
    See my other post for more detail:
    B6 stealth sub

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Hi Andy,
    I have just got some new speakers and decided to get a set of Alpine SXS-1757 for the front as I'm hoping that they will not need to be amplified.

    I just wanted to ask what the diameter of the rings of mdf that you cut for the adapter's were?

    Thanks for your help.

    regards

    Jonathon

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    Re: B6 A4 Speaker Upgrade with Alpine SPR-17LS

    Outside diameter was 6.5", inside diameter = whatever the speaker will drop into, so depends on the speaker design. Essentially the ring needs to be about 1" wide all round to give it some strength, but not too big as to foul the door trim. The speaker has to fit inside it and you'll need 2 x 18mm rings per door to give enough depth, + a bigger fitting ring (6 or 9mm MDF) that can be screwed to the door

 

 

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