Quartz Restoration

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cushtech

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Quartz Restoration
« on: 20 Jan 2018, 03:17 am »

I am starting the restoration of a pair of ACI Quartz 3-way speakers and hope to perform a few upgrades while I do.  New wiring, new foam and new crossover components.   If anyone out there has information on the crossover, the manual or the kit instructions please let me know.

I've removed the deteriorated foam and the crossover.  Here's the schematic of the crossover (I'm not 100%  sure that it's the original design) and a copy of the page from the ACI catalog. The woofer is a Dynaudio 17W75, the midrange a D54af and the tweeter is a D28.








cushtech

  • Newbie
  • Posts: 2
Re: Quartz Restoration
« Reply #1 on: 1 May 2018, 03:58 am »
Finally finished restoring the Quartz speakers and figured I'd post some pics as there's little information on the web about them.
I updated the crossovers with larger coils and caps so I decided to mount them on the back of the speakers.
The Quartzs are now living in my classroom which I can safely say has the best sound at the school.


Original crossover and variovent.


Defoamed and emptied enclosure.
 

New crossover mounted on the back of the cabinet.


Restored Quartz