CLS X218 Speaker Upgrade

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New Member
Aug 29, 2017
The Cold North East
C220 SE CDI Coupe
Recently upgraded the standard basic front door speakers to something a little better, and very happy with the sound quality improvement.
I took the Hertz Uno 17cm speakers out of the C220 before I sold it as I was quite impressed with them.
The standard CLS front speakers are totally uninspiring.

First I 3D printed some tweeter carriers to fit the Hertz tweeters into the CLS housings:
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I found some matching tweeter sockets on AliExpress, so the tweeters are plug and play.
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Next I aquired some almost original front speakers from another Merc model, different part numbers but almost identical.
Gutted them and again printed some 3D adaptors to take the Hertz 170mm speakers.
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Next, the tricky bit: I got a pair if 3.5" Hifonics coaxials, to go in the space where the missing speakers should be.
Again some trial and error 3D printing before I came up with something that would fit, as the Hifonics are obviously quite bigger than the Merc speakers for this position.
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If I was doing this again I would have gone for Alpine 3.5" speakers, which are a good bit shallower than these. Anyway, I got them to fit at the 3rd attempt.

This required removing the original plastic speaker holders with a very hot modeling knife and a blowtorch to cut/melt throught he very tough glue!
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Also had to cut the speaker hole in the panel of course.
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3.5"s are fed straight off the same feed as the 170mm's.
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Panels back and everything looks original.
Sound quality is massivly better, I actually bought a little Pioneer GM D1004 amp to fit, but having second thoughts now as the whether I actually neeed it now.

Next job is a pair of Alpine SPE-17SF Components into go in the rear doors.
These are made and ready to fit, again fitted to a pair of original gutted speakers I got from another Merc model.
Sadly you need to destroy the original speakers to remove them from the rear doors, but the new/modified ones are easily fitted and removed.

Watch this space for the next exiting installment . . . . . .

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