Coherent Source Service - THIEL Speaker Repair

05/15/2026

Just received a brand new shipment of CS1.6 woofer surrounds from a company THIEL has done business with for decades. So grateful to still support these beloved speakers!

03/09/2026

FYI, comcast is blocking emails from my domain for some reason🙄. If you have comcast and are waiting to hear back from me, please call or wait patiently for me to navigate the comcast IT reporting process. If you don't have comcast, you should be getting my emails just fine.

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03/06/2026

Every audio collectors dream is to find something like this for the taking. Client found these in the trash and sent them in to be saved. We repaired all the flood damage, new bases, reglued the baffles, rebuilt the drivers, recovered the grilles, and gave them a full refinish. Unbelievable!

02/17/2026

Building coax moving systems today. These are time consuming and delicate, but I always try to keep a few extra on hand to make turnaround times quicker for you.

01/14/2026

Put the wraps on Model 03 (not 03a!) serials 11 and 12 today. Given the generally good cosmetics, client opted for a full acoustic restoration which included new woofer surrounds, new tweeters and crossover re-capping and tuning to match new tweeters.

10/29/2025

Wrapped up a pair of 04a speakers today that turned out great. These had been exceptionally well cared for and only needed new woofer surrounds to sound great, but the client also opted for new grille fabric, trim strip refinishing and printing, and adding spike inserts. These speakers are pushing 50 years old and still sound and look stunning!

09/19/2025

Super proud of how this CS.5 restoration took shape. The last 3 frames show the original condition. Besides the obvious refinishing from black into 'cinder ash', we made a number of improvements and added lots of new parts. Check the details on our site!

09/19/2025

Pleased to present the newest full restoration by Coherent Source Service! https://www.coherentsourceservice.com/speakers-for-sale/thiel-cs-5-fully-restored-ash-cinder/

08/18/2025

I bought a pair of CS1.6 cabinets that the previous owner painted with thick damping material and duratex. After 4 days of stripping and sanding, they're headed to the paint shop to be returned to their previous luster!

07/03/2025

One of those little details is adding some strain relief to the voice coil lead-outs so they don't stretch and break if you listen a bit too loud.