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More Sound: Less Mud. New Speakers for the Red MINI

If you read any of the reviews about the first generation New MINI audio systems you know they were not well received. The base audio system is generally considered as sounding muddy and has no bass. The more expensive Harman Kardon system is a bit better with uprated speakers and an amp located in the boot, but the amp adds weight and weight is the enemy of fast, so we here at GeorgeCo wanted to see if we could make the base system sound better then the HK system without adding a significant amount of weight to the car. Remember, we do this so you don’t have to. Fortunately for us, the Blue GeorgeCo MINI has the HK system, and the Red GeorgeCo MINI has the base system. GeorgeCo often spends four hours a day commuting to work and from work, so sound is important.

We started by trolling the interwebs for various speaker reviews and finally settled upon Polk Audio component speakers in the front (DB-6501) and 6×9 inch speakers in the rear (DB-691). If you use the Crutchfield configurator, it will recommend the 6501s, but not the 691s, but don’t fear, they will fit as you’ll see. When it came time to find the best deal, we couldn’t beat Amazon with Prime shipping. You will need the speaker adapter from Crutchfield however.

Getting started. Like everything else on GeorgeCo: use at your own risk. Start by disconnecting your car battery. Did we do that? No, but you should. You know why. If you have a Bentley guide, follow it for door and interior panel removal. If you don’t have one, here’s the short version. Door panels have 4 Torx Screws. Carefully remove the small round reflector to see the one hidden behind it. If you have a 2005-2006 Cooper S, you have to remove the arm rest to see the fourth screw. The arm rest slides off once you release the hidden catch. It slides from back to front. Slide a kitchen knife along the door bar between the padding and the bar along the center axis of the bar. Apply gentle pressure to pull the pad to the front of the car. When you trip the catch, it will slide forward easily. Do not force it or you will break the plastic tabs on the door bar.

Door bar

To remove the door panel, use an appropriate trim removal tool or carefully wrap a screw driver so you don’t scratch your paint or rip the panel, and begin prying the panel loos at the corner. Once you get the first tab to release, work your hand behind the panel and move around the edge of the door. To remove it from the top edge, pull straight toward you. Once the panel is free, remove the trim ring around the door handle by gently squeezing the tabs from behind to free it.

Old Tweeter

The speaker wire splits and one set of wires run up to the very inexpensive tweeter built into the door handle and the other runs to the mid-range speaker lower in the door. There was no cross-over built into the OEM base system so the tweeter just has an inline filter to filter out the mid and low ranges. Disconnect the wire to the tweeter and tie it off, it will not be reused. Remove the tweeter by gently prying it out of the plastic setting. Remove the lower speaker by removing the four screws and unplug the wire.

no speaker

When you compare the old speaker to the new one, you’ll see how much you have to build up the new speaker to get it to fit correctly in the door panel. This is where the adapter from Crutchfield comes in handy. The speaker comes with one mounting ring, but it is not thick enough. You have to use that ring with the Crutchfield adapter to get the right thickness. Use your dremel tool to remove the tabs for a clean install. We used a wire adapter also from Crutchfield to retain the stock wire harness. Run that wire to the cross-over and run a wire from the cross-over to the speaker. We hid the crossover in the door cavity using automotive tape and zip-ties. (We like to avoid drilling if we can.) Be sure to run a new wire from the cross-over up to the tweeter before you mount it in the door.

speaker and crossover

If you have enough patience, I’m sure you can mount the tweeter in the door handle frame using the supplied mounting clips. This would hid the tweeter behind the stock speaker grille in the trim piece. We saw a different approach that we liked so we didn’t do that. We chose to mount it in the trim piece which meant we needed a way to disconnect it from the wiring so we added connectors to the wire running from the cross-over and left the tweeter hanging as we went to work on the trim piece.

installed

To cut out the stock grille, we first used a hole-saw to cut a rough opening.

rough

Then we used a dremel tool to remove an additional eighth of an inch or so to make the new tweeter fit snugly into the opening.

finished opening

With a little epoxy to hold it in place, it looked like it came that way from the factory. Installation of the door panel is the reverse of removal. (We love saying that.) We made sure we had the tweeter angle correctly before setting the epoxy and put the trim piece back on the door handle. It looks like it was meant to be there and you can’t see the upgraded speaker behind the other factory grille which was our intent.

done with door.

Time to switch attention to the rear speakers. The process for the rear is not as complex fabrication-wise, but it is time consuming due to the process of removing the necessary interior trim panels. Start by removing the rear seats. Fold the seats down and look between the seat backs for the clamp. Loosen the 10 mm bolt and pry up on the clamp to gain access to the pivot-point. Working on either side first, pull out the pivot point, and rotate the seatback to 45 degrees and pull out. The pin on the opposite side will release. Repeat for the other seatback. Remove the seat bottom by first lifting up on the leading edge to release it from either side. Pull up on the child seat retention blocks to release them, then lift the seat back from the front at an angle to release it where it is caught under the catch that’s part of the clamp you worked with for the seat backs. Switch your attention to the boot, and remove the rear trim panel around the boot lid latch.

rear trim

There are three plastic pop-rivets to remove and then pull straight up to release the four catches. You may need to remove the carpet to get to the lateral trim pieces. The carpet has two plastic pop-rivets and then then lifts out. The lateral trim has three screws and a series of plastic catches. They appear yellow in this photo:

lateral trim

Start at the rear and work along the bottom edge, pulling gently to release the catches. Working from the door, pull the gasket along the lateral trim piece off the door jam along the trim piece to free the bottom. Pull the lateral trim piece straight toward you to release the top edge along the window.

old speaker

Remove the old speaker by removing the four screws and the retention clips. Unplug the speaker. Because the new speakers sit higher than the old ones, we’re going to mount them from behind. Since we can’t get behind the sheet-metal to hold them in place, we have to get creative. We used three-quarter inch bolts, mounted from behind the speaker and secured with washers and nuts. We then used the spacer provided by Polk and placed it on top of the speaker to set it even further back when we mount it in the opening. We then plugged in the new speaker, held it by the tweeter stack, worked it into the opening and put the bolts through from behind and secured them with another set of washers and nuts. This way, the speaker with the tweeter stack sits behind the factory grille in the lateral trim piece.

rear speakers mounted

Reverse the steps for the lateral trim installation. Line it up, press in the leading edge along the window. Start at the door and line up the yellow catches. Press in the catches. Put the screws back in and then reverse the rest of the removal steps. Larger photos here.

So how does it sound? The difference is amazing. You’re not going to rock your neighborhood, but there’s a good deal of bass now and the mid and high tones are much crisper. The muddiness is gone and the best part is I didn’t have to add an amp so the weight gain was minimal.