Factory sub replacement
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Wish you would have posted this a couple weeks ago. I just threw away mine and would have given it to you for free.
Are you set on a factory look or are you open to putting a real sub set in the trunk? Honestly you would be better off just removing the speaker and putting in a small 8"-10" sub box with amp in the trunk. You can even feed right off the old subs speaker wires.
Here is probably the cheapest solution although I spring for something better.
Sound Ordnance B-8P 80-watt powered bandpass subwoofer at Crutchfield.com
Are you set on a factory look or are you open to putting a real sub set in the trunk? Honestly you would be better off just removing the speaker and putting in a small 8"-10" sub box with amp in the trunk. You can even feed right off the old subs speaker wires.
Here is probably the cheapest solution although I spring for something better.
Sound Ordnance B-8P 80-watt powered bandpass subwoofer at Crutchfield.com
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This is the type of speaker to look at:
BMW MINI One / Cooper / S Harman Kardon Rear Speaker R50 R53 | eBay
If you look at the speaker cone you can clearly see 4 wires & sealant for the dual voice coils, instead of the usual 2 for a single-cone unit. If you look at the seller's other photos you can see the 2 separate connections for the dual voice coils on the rear of the subwoofer.
Not all BMW Mini 6x9 speakers are dual voice coil-it has to be the Harmon Kardon type as in the above ebay ad...
BMW MINI One / Cooper / S Harman Kardon Rear Speaker R50 R53 | eBay
If you look at the speaker cone you can clearly see 4 wires & sealant for the dual voice coils, instead of the usual 2 for a single-cone unit. If you look at the seller's other photos you can see the 2 separate connections for the dual voice coils on the rear of the subwoofer.
Not all BMW Mini 6x9 speakers are dual voice coil-it has to be the Harmon Kardon type as in the above ebay ad...
Last edited by Red October; 03-25-2013 at 10:17 AM.
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Well when my fuel pump was replaced the speaker connector on the right was left unplugged and the speaker played but the stereo didn't recognize the subwoofer so I couldn't adjust. I figured out by checking it wasn't plugged in and reconnected. It still didn't recognize it. I'm not sure now when I replace the broken sub if my amp an stereo are going to recognize and "show" subwoofer so I can adjust it or not.
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I made my own wiring looms from the circuit diagrams in order to connect up the boot-mounted Amp unit. The head unit in the facia would recognise the Amp & give the subwoofer settings in the screen menu-even with no sub actually connected (I had not fitted one at that stage & was just testing the system before connecting up all the speakers to the Amp-which required a loom to be made from the boot to the passenger compartment).
If the head unit does not recognise the Amp & does not show the subwoofer settings in the menu, then that's usually a problem with the Amp or associated wiring-I found that the Amp would still be recognised by the head unit & show the subwoofer setting on the menu even with no sub actually connected.
It's possible that when you had the fuel pump replaced some of the wiring was disturbed-if it was working alright before the fuel pump was replaced, and only stopped working properly after the fuel pump was replaced, then it's possible that some wiring in the boot relevant to the Amp was damaged or moved in some way.
It's hard to be more specific as the early X308's had the Harman Kardon system fitted, while the later models had the Alpine system fitted.
The wiring that signals the facia head unit of the presence of the Power Amp is usually low-level in nature, & nothing to do with the high-level speaker drive signals from the main power output of the Amp. So it would be unusual to disconnect the speaker & then find that the head unit won't recognise the Amp any more...
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It was a pretty messy & fiddly job as the rear windscreen was in the way & I had to be careful not to break it-however, it can be done...
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Roger77 (04-17-2013)