Acoustic Zen Crescendo speaker crossover capacitors ... who makes them?

I purchased the Duelund resistors at Parts Connextion over 50% off the retail price. The caps were also on sale. I saved a good amount of money for this job.

I suppose the price for the Crescendo with upgraded crossover parts would be pretty high with additional builder and dealer margins etc... Perhaps $2500? Maybe more.

Anyway, I will report back middle of the week. I suppose the burn in process could take things south for a season. 

Hi Bill,

It was great that Robert Lee replied to your emails. What insight did he give for upgrading the crossover?

Can you give an executive summary of the sonic differences between: Harbeth 40.1, stock AZ Cresendo and the modified AZ Crescendo?

Bill,
Congratulations on your sucessful Cresendo modification project. I know that you have much experience doing numerous upgrade modifications over the years but I can tell you are especially pleased with this particular one.

There are certain speaker brands that offer upgraded/superior parts as a package. Daedalus and Kaiser (Kawero model) are 2 that come to mind, certainly there are others.

There’s no question that better quality parts can and do improve sound quality, I don’t know why some people are so resistant to this fact. My background isn’t as extensive and hands on as yours. In my experience capacitors, resistors, wire,fuses, etc. They all make a difference and I’ve heard it as plain as day.

Bill, you’ve taken a very fine speaker and have improved it to your satisfaction.
Charles

Thanks Charles!

Jebe1

Robert answered one question I had as an inductor and resistor were on the board and not soldered in the circuit. I wanted to confirm he meant to leave them out of the circuit. He did make a change and decided the speaker sounded better without these parts in play. He also offered to help to should I have any other questions. That is the extent of what he helped me with.

The 40.1 speakers are amazing and every bit as good as the Crescendo speaker. I sold them for aesthetic reasons in our new home and shared living/listening space. I would say the Crescendos go deeper and more powerful in the bass while the 40.1s seem to play all types of music and poor recordings well. They are so smooth and easy to like while the AZ speakers are more dynamic and resolving.

The upgraded AZ speakers just widen the gap in improved resolution, dynamics, and refinement.