Apogee Duetta II Signature Crossover Caps Recommendations


Hi All,

I’m getting my speakers completely refreshed by Bill Thalmann @ Music Technology with Graz KLM7 MRTW ribbons, Type 42 bass ribbons, mid/high ribbon wiring kit. I’m also considering have the original Sprague crossover capacitors replaced with either Auracap XOs or Multicap PPMFX capacitors. I’m looking to keep my cost in the realm of these caps. I’m wondering if anyone has direct experience, preferably with my model speaker, recapping and what you recommend? I’m open to mixing as well, but would need to understand the “why”. Thanks in advance!
parker65310
@gmosley and @parker65310 

I have a pair of Apogee Duetta Sigs which I purchased new approximately 30 years ago. I still marvel at how well they sound and I, too am a new fan of BAT - I use a BAT VK 42se preamp and a BAT VK 250 power amp. I have driven the Duettas with many configurations in the past including Forte pre and power amps, Proceed PRE and Bel Canto power amp, including a pair of Ref 1000 monoblocks. 

My question, if it is not too personal, is this - how much do you expect to pay for a ribbon rebuild by Bill Thalmann? I have attempted to get in touch with him, but have had no luck. After 30 years of use, I have to believe that my Duettas would benefit by a new ribbon rebuild.

I used to be on the original Apogee forum many years ago when Graz started supplying ribbons and building his own Apogees. We used to exchange Christmas gifts back then - in the form of CD's. He sent me a pair of mid/tweeter ribbons one year along with a great CD another year.

Any info on the rebuild cost would be helpful - Thanks

Richard Moscatelli
Hi Richard, from scratch you should roughly expect to pay $2,500 for all of the needed ribbons, acoustic foam, front and back socks, and wiring kit (for mid/high ribbons which includes (much improved from original) tension clamps) and Bill’s labor is a flat fee of $2,500. They also have an auto shop they use for painting that typically costs $1,200 (I’m doing a semigloss satin black). The only thing left would be to swap all of the Sprague capacitors which is typically about $1,400 when using caps they recommend (the speakers use a lot of them) and potting the resistors with epoxy. If you need shipping crates built they run $600+ from someone like Navis. Bill Thalmann is super-busy and the best way to reach him is via email at bill@musictechnologydotcom (typed out dot due to Audiogon’s filter). Cheers! 
Parker65310...thank you very much for the detailed information. At least now I have a good idea what to expect should I choose a rebuild.

Richard
You’re welcome. Feel free to message me privately if preferred. Same goes to anyone else looking for specific info that may not be appropriate for a public forum. No need to track it all down yourself when I’ve already done countless hours of my own research and amassed various top quality sources and articles.
@parker65310: thanks for the great info. Does the parts cost of $2500 include the bass panels?

How do you like the refreshed Duetta Signatures? I have owned the Duetta Sigs for over 30 years. Fortunately they don't have the dreaded bass buzz, but I may upgrade them.