Help On Dunlavy's

Looking for information on upgrading parts in crossover in Dunlavy SC 4A's. A friend and myself both own Dunlavy speakers and we like them very much. We also believe that they can be made better with better crossover parts. Upon inspecting the crossover we found a lot of the values were removed. We contacted Dunlavy and they refused to give out the information. So can anybody tell us who might be able to help us. Our only objective is to make a good speaker better.
Thank's, Chuck.
Dunlavy doesn't use the most esoteric parts, beieving that more expensive parts don't provide any more benefit than less expensive ones and that in some cases are worse. Many parts manufacturers allow themselves a rather generous tolerance level. Dunlavy tests and matches theses parts then fine tunes each set of speakers to a be +/- 1.5 db to a specific model of parameters. Much of the expenses of Dunlavy products is the result of this individual fine tuning of each pair of speakers to meet these strict parameters. I don't belive most people have an anechonic chamber and the necessary equipment or expertice to replace parts and meet this level of precision tuning. Bottom line, while you may be able to find parts that claim to be superior, you may not be able to verify the claims and further more even if you could you might not be able to implement them as well as the factory did with lesser parts. You might want to heed the old adage "If ain't broke don't fix it".
Chuck, there are many ways to upgrade Dunlavy speakers. E-mail for an exstensive list of how to, whys, and what parts.Tom
I had my Cantatas upgraded by Blackie Pagano of Tubesville here in New York. He only upgraded parts and didn't change any circuits. What I got was a 100% improvement. Parts make a huge difference. I love the Dunlavy sound and these are now some of the best speakers I've ever heard. It's all a bunch of BS that the parts are matched closely and this is the best way. The problem is that people like Dunlavy have never taken the time to listen to high end parts.
Passive parts are a totally interactive voice within the choir of component parts of a loudspeaker. They are taken for granted!
I hope that many of you understand that I do believe that one can improve a product with better parts. I understand that manufacturers are building to a price point and trying to maximize profits where ever possible. My concern is the challange of implementation. Especially when dealing with a loudspeaker that was designed and fine tuned with a propriety computer program in an anchoenic chamber.
Hearing the Dunlavy SC-IV's the first time was one of the most paradigm shattering events in my listening career! Setup included: ARC VT-130 & LS-2B, CEC disk spinner, Theta decoder and Dunlavy wire (can't vouch for A/C conditioning, etc.). Noise floor down to zero; perfect imaging; timberal precision; and on...
I can't conceive of Mr. Dunlavy ignoring the effect of ANY part in his designs.
Replace a 10 cent resistor with a multi dollar Vishay resistor bridge and you will be able to leap from joy over the top of your Dunlavy's