JCP1990S4

My 1990 S4 speakers (side rear, larger ones) are blown.

Does anyone have good used ones offered for sale or does anyone know how and/or what to replace them with.

The housing for them curves and does not look very easy to match up with anything else.

I thought about cutting the insides out and putting a smaller speaker inside.

Any ideas would be helpful.

Thanks in advance for your suggestions.

JoeTaylor

Hi JCP1990S4,

I just replaced my rear seat speakers on my 1988 S4 with 6.5" 2-way speakers from Pioneer. They had them on sale at Best Buy for $40. They are shallow mount speakers and they fit into the OEM speaker covers with a little modification, and sound great.

They are model number Pioneer TS-G1642R, 6-1/2" 2-Way Car Speakers with Polypropylene Cones (Pair). They are only 1 5/8" deep.

Here is a link to the technical information
http://www.bestbuy.com/site/olspage....=1199494465847

Hope this helps,
Joe

Rob Edwards

You can get them re-coned for about $75 (https://rennlist.com/forums/3171572-post10.html)

Or you can do it yourself for less:

https://rennlist.com/forums/928-foru...-speakers.html

Or you can wait for Patrick (CPR Racing) to finish making deeper surrounds that will fit modern 6.5" speakers (though it looks like IB has run Patrick off. Hmmm...

https://rennlist.com/forums/928-foru...hlight=speaker

Or you can wade through a million threads on mounting mid-bass speakers in that site and worry about cutting vs. not cutting the metal underneath, mounting depths, etc.

Or you can do what Joe did, looks like a good solution!


I'm waiting for Patrick, personally.

WallyP

If you plan to replace these speakers with new ones, remember that the originals are two-Ohm speakers. If you replace them with four-Ohm speakers, and still use the original amp, the sound will be pretty bad.

If you want to keep the original sound system, replacing the cones is probably the way to go.

cold_beer839

+1 on re-coning the speakers.

It will keep it stock looking and be much easier than trying to find something that fits and doesn't look "Pimp My Ride"-ish.

StratfordShark

Recently fitted a pair of MBQuarts DSD-216 in those locations.

You have to cut the original speakers out of the mounting ring so that you can still use the concave shaped ring.

Attached speakers to panel using a few self-tapping screws. You just need to see what position works for the speaker which has numerous holes on outer (metal) ring, and use holes to mark position for drilling. Also had to chop a couple of pieces out of this metal ring so that lug of original plastic mount would sit in its recess. Could then put cover back on for totally stock look.

Mike B

I also went with a set of MB Quarts...picked up a German made set of the QSD model (got them off ebay for cheap) for the doors and rear. They sound exceptional but it took some "trimming" to keep the stock look. If I had known about Joe's solution I certainly would have considered that or re-coning.

Andy E.

I just finished upgrading the door and rear seat speakers with new units. I took Joe Taylor's advice (Thanks Joe!!!) and consulted Best Buy's website for the Pioneer 4-ohm units. I knew that any new 4-ohm speakers would not sound too good since the rear woofers were originally set up for 2-ohm units. Because my oem's were "foamer-gasted" (blown) as well, my choices were limited.

Keep in mind that I'm running a factory stock 10-speaker system with the Porsche CD-2 head unit and matching amp next to the passenger's seat.

Unfortunately (or should I say Fortunately?), Best Buy Canada doesn't stock the Pioneer 6.5" speakers that Joe recommended (USA Only). So, what do I see while slumming on Best Buy's website? JBL Grand Touring series GT0-628 6.5'' 2-way speaker in a 2-ohm configuration!! Wow!! Could it be? Has God taken pity on our 928 souls and finally decided that we should have a chance to fix our pityful sound systems while maintaining the "factory" look?

I picked them up yesterday morning and thanks to Mr.Dremel with both the cut-off wheel as well as the large milling attachments, they fit perfectly into the stock housings and grilles!

Here's Best Buy Canada's website showing the GTO-628: http://www.bestbuy.ca/catalog/prodde...07&catid=20114

For the doors, the JBL's hefty magnets on their GT0-428 4'' 2-ways would not allow for installation. After careful consideration, I opted for the Alpine SPS-400 4'' 2-way 4-ohm speakers. They are shallow at 1-5/8" and fit perfectly into the stock plastic rings. One thing I did have to do was to "dremel" the face of the new speaker's plastic tweeter housing about 1/8" so that the wire mesh of the stock speaker grilles wouldn't interfere.

In closing, the install was a success. I've restored bass to both the doors as well as the rears and the Alpine units are now much more crisp on the highs and mids. Now I can truly say that the factory sound system is not really that bad provided that it drives some half-decent speakers.

JoeTaylor

Nice Andy.. way to go!

After looking at the old OEM speakers (ATT ones) in my 928 S4, pretty much any current speaker will play much better with improvements because they have plastic cones, coxial tweeters, better surrounds and magnets.

Joe