Crossovers going back in center channel today.
Cabinet is damped with 2mm thick sound deadening sheets first & 4mm thick natural fiber felt.
Will be filling rest of the empty cabinet with natural lamb wool.
Will post results soon.
The difference between the Blue, Red & Green Cactus parts are the ratio of paper to Polyester. Otherwise they are the same basic construction
I am rebuilding my Martin Logan Prodigy speakers which I have had for almost 11 years (I'm the 3rd owner).
There are a few things that are priority.
#1 I just received new ESL panels today
#2 I will recap the power supply in them (only a few cheap caps there).
#3 I am having dust covers made for the ESL panels because, well... dust is an enemy of ESL panels
#4 I am going to refresh the crossover, starting with the STATOR panels
I've put together a capacitor list as a 1st phase tweak to replace the Solen caps for the ESL panels that cross in about 250Hz. The dual woofers I will leave for the 2nd phase.
I am thinking I want to go with black Mundorf Supreme caps. They are a chunk of money for sure. Even without bypass caps, I'm looking at about $1350 for the ESL panel portion of the crossover without even putting in some bypass caps (add $400 for 4 bundles of caps per speaker, 8 bypass caps).
Due to large 100uF, 330uF + 330uF, 170uF, values, I would use white Mundorf Mcaps for the woofer section later on in phase 2 of this project.
I had also toyed with the idea of making all this and external solution. I'm not exactly sure if I have enough room in there yet.
Anyone have some critiques or recommendations I can incorporate?
Here's someone else's pic of a Martin Logan Prodigy crossover.
thanks in advance
There are a few things that are priority.
#1 I just received new ESL panels today
#2 I will recap the power supply in them (only a few cheap caps there).
#3 I am having dust covers made for the ESL panels because, well... dust is an enemy of ESL panels
#4 I am going to refresh the crossover, starting with the STATOR panels
I've put together a capacitor list as a 1st phase tweak to replace the Solen caps for the ESL panels that cross in about 250Hz. The dual woofers I will leave for the 2nd phase.
I am thinking I want to go with black Mundorf Supreme caps. They are a chunk of money for sure. Even without bypass caps, I'm looking at about $1350 for the ESL panel portion of the crossover without even putting in some bypass caps (add $400 for 4 bundles of caps per speaker, 8 bypass caps).
Due to large 100uF, 330uF + 330uF, 170uF, values, I would use white Mundorf Mcaps for the woofer section later on in phase 2 of this project.
I had also toyed with the idea of making all this and external solution. I'm not exactly sure if I have enough room in there yet.
Anyone have some critiques or recommendations I can incorporate?
Here's someone else's pic of a Martin Logan Prodigy crossover.
thanks in advance
Humans have a wide range of abilities to perceive different stimuli.
Some people, you can walk up to them and say "Sing an A Flat note." They go "Ahhhhh" and when you play an A Flat on the piano, they got the A Flat perfect. Some guitarist can pick up a guitar and tune perfectly without using any reference. I can play 3 random notes on my piano, my daughter can tell me the 3 notes I played, without hesitation.
Me? I cannot carry a tune in a bucket, nor keep time with a watch. (and yes, I am very jealous of my daughter)
I see no reason that you can find people that have similar perception abilities to discern the differences between "good" and "bad" capacitors.
Which capacitors are "worth it" for you to purchase? Like so many things associated with this hobby, experiment give, different components and try a new designs and see which choices make your heart sing. Perhaps sing an A Flat?
Some people, you can walk up to them and say "Sing an A Flat note." They go "Ahhhhh" and when you play an A Flat on the piano, they got the A Flat perfect. Some guitarist can pick up a guitar and tune perfectly without using any reference. I can play 3 random notes on my piano, my daughter can tell me the 3 notes I played, without hesitation.
Me? I cannot carry a tune in a bucket, nor keep time with a watch. (and yes, I am very jealous of my daughter)
I see no reason that you can find people that have similar perception abilities to discern the differences between "good" and "bad" capacitors.
Which capacitors are "worth it" for you to purchase? Like so many things associated with this hobby, experiment give, different components and try a new designs and see which choices make your heart sing. Perhaps sing an A Flat?
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Yes, I know those are resistors. I didn't circle them. This is someone else's photo and only to illustrate what the crossover looks like.
I am looking for are people's personal experiences when dealing with electrostatic speakers and capacitor replacement.
This was Martin Logan's top model in 2000 (not including their Halo product Statement E2). I don't know how many corners they could or would have cut in this situation. I'm sure all but six figure systems cut some kind of corners to meet specific price points. Time moves on so I am hoping what is on the market today can offer more than what ML used 25 years ago. I am certainly not calling Solen caps good or bad but if they are constricting the stereo image for musical information I would like to know what others have experienced relating to this.
I am looking for are people's personal experiences when dealing with electrostatic speakers and capacitor replacement.
This was Martin Logan's top model in 2000 (not including their Halo product Statement E2). I don't know how many corners they could or would have cut in this situation. I'm sure all but six figure systems cut some kind of corners to meet specific price points. Time moves on so I am hoping what is on the market today can offer more than what ML used 25 years ago. I am certainly not calling Solen caps good or bad but if they are constricting the stereo image for musical information I would like to know what others have experienced relating to this.
Here is an actual photo of my crossover. I don't believe large bundles of 3 Mundorf Supremes will fit in this box to replace a single 50uF Solen.
