Green Mountain Audio


I picked up a set of Diamante's for cheap. They have trashed foam surrounds but otherwise seem fine. I plan on veneering the "marble" with a beautiful teak or rosewood- I haven't decided.The angles will look pretty cool with the right veneer. The marble is not so cool but rigid and heavy. 

Curious if some upgraded drivers would improve the sound- as apposed to re-foaming. I realize this is a shot in the dark but my understanding is Roy from GMA has passed so not sure where to get driver advice. Open to any and all suggestions.

ovinewar1

I looked @ various pics of the speakers online and all I can say is that you married well.

DeKay

Here is a reply from my friend who owns a couple pair of Green Mountain speakers and knew Roy well. He is very technical, basically an engineer:

 

I've found over the years that people don't want advice in audio forums.

I'm staying clear of them all.

People used to argue with Roy, who was a Physicist, about speaker design.

None of them ever won the argument, but some kept trying.

Tell them anything and you're an audio snob.

 

Between you and me, I doubt any "updated" drivers would work, as Roy used 1st order crossovers in all his designs, meaning the woofer had to play higher and the tweeter lower.

Those drivers are not easy to find.

Your friend is spot on in many of the discussions I have seen. This one has been refreshingly civil- maybe I should bring up fuses or wire 😉. I have been able to order replacement surrounds and even the tweeter silk dome. Should take a few weeks to all come in and I will update. I asked a local cultured marble place for some scraps to experiment on veneering techniques as well.  And DeKay…. I hit the jackpot on the marriage front. 

Roy would dumb things down so that i could understand what the hell he was talking about. in the end it was all academic, its how they sounded that counted.  wished he had quit smoking. 

I would also agree to refoam and not try and replace the drivers.  I know Roy would also for some drivers write - , 0 , or + on the back of the drivers as he would then match the drivers and only include the same matched drivers that he individually tested.  So for instance both tweeters would have the marking - on them not - and then +.

I've owned the Europas, Callistos, Eos HX and C1.5 and they were all excellent speakers.  I still have the Callistos and spare woofers for them.  I've since upgraded to full range speakers but the midrange, detail, soundstaging and realism of the Green Mountains was first rate.  I also enjoyed speaking with Roy on many occasions although I really didn't understand all the physics.  I always felt like I just had a one hour physics class when the call ended.  He was such a great, knowledgeable guy.  I was in line to get the EOS ribbon tweeter model but unfortunately that never happened.