Help replacing 8" woofer on Gershman Avant Garde Rx-20

This failure likely reflects more on your amp than your speaker. 

You can also check your crossover. the fact that 2 drivers are misbehaving might point to the crossover, which would be much easier to find parts to rebuild.

Jerry

Jerry,

thanks for writing.  Curious what makes you say that regarding the reflection on the amplifier?  This amplifier

was recommended to me by Gershman, a Simaudio 340i.  It’s very capable.  
 

how does one check the crossovers?

I can really to help you to find and replacing maching woofers, located in Brooklyn

https://bacheaudio.com/

I bought a store demo GAG.

Once I got it home, it buzzed on one particular CD. I thought it was the driver. The dealer ordered a new driver from Gershman and I brought the speaker back to the dealer and tested on his machine. Well, the buzz was hardly noticeable. Anyway, the dealer installed a new driver. When I brought it home, the buzz was reduced, but a tiny buzz was still there. Then, I realized the problem was on my part. Then, I upgraded the amp and preamp, and the buzz was completely gone.

My amp/preamp was almost 20 years old (Plinius SA102 and M16P), and once upgraded, Gershman sounds much better.

I guess you can simply order a driver from Gershman if they still have it. Or, you can ask them about replaceable driver.

I also listen loud and dial at around 12 o’clock on preamp volume.

I’ve sent my woofer to Bill LeGall at Millersound. @testpilot Gershman no longer had parts for the AG RX-20.  Once you hit 20 years of a particular speaker, even the big brands (I.e. B&W) likely won’t have replacement drivers.  Fingers crossed but I’m told Bill is the best in the business.  Will update once I know.