Quote: Originally Posted by larryminator "He designed with Mark Porzilli and built the first American ribbon line-source speakers, using the legendary Strathern ribbons from England, which garnered accolades in the pages of Stereophile magazine in the 1970s and early 1980s"...

Over Thanksgiving, I conned my father who has nearly 50 years of experience in the electronics repair business into checking out the 'phones. He went through the energizer, checked the components, touched up the old solder, and found the diodes to be just fine and the power supply to be running...

Well, I'm not too sure about the voltage thing. Using the Triplett digital MM, I first measured 142 volts then as the energizer ran, it dropped down to 78 volts. With the Simpson measuring after its run for a while, I get a reading of 22 volts. However, these are in volts AC as nothing shows for...

Quote: Originally Posted by tyre It shouldn't matter if there is a signal or not because the bias voltage is constant. What is the voltage between just the + and - output of the bias supply? I've been trying to measure it with my Triplett 9005, but it was a pain in the ass to use...

Pictures as requested. The first is of the energizer as is, the second of the board pulled loose to show the components. - JP

As I posted earlier, I haven't figured out a way to get in to the diaphragms and haven't pushed the issue out of fear of breaking something in the process and because I've been told here and in my AA thread that its likely a power supply problem. 'Fraid I can't take pictures of the energizer...

I've been doing some work on these to see if I can fix the problem. I changed out the 4 0.01 mfd ceramic caps in the energizer and jumpered across the breaker (for testing purposes) that was giving me some slightly erratic resistance readings. With this, the phones are still very, very quiet and...

Understandable, though I too am a newb in this arena. Yes, it is perfectly safe to lick a Magnepan, with or without grill cloth, but I don't recommend it. Old Miloxane, wire, and dust doesn't please the pallet as much as you'd think. Well, with regards to the older ones, at least, the new...

You know, I was joking with that comment. If I was being serious, I would never have bought these in the first place. - JP

Ah, wualta, there you go again posting a long, in depth post that I can't even begin to answer in detail. Sometimes it isn't fun being the newbie in a new audio arena. I'm hoping your right about the problem being in the power supply area and nothing major at that so I can affect a repair, I...

Hey now, still enjoying picking apart the semantics of my posts? I was just referring that you seem to be an active member of any forum that's at least halfway decent with a good knowledge base. Which is why I'm here, actually, surely the biggest and best headphones forum would know something...

Sheesh, wualta, you seem to be on every half-decent audio forum. Unfortunately, due to the headphones being late shipping out, I won't receive them until Monday at the earliest. I was hoping to get them in time for the weekend when I'd have a chance to really dig into them. Ah well. In the...

Greetings all, I've been a fan of vintage Infinity speakers for some time (owning a pair of Quantum 2s that I'm finishing up the refurbishment of and a pair of Reference Studio Monitors) and have wanted to try electrostatic headphones. Well, an opportunity came up on a pair of Infinity ES-1...

I'm just a bit of a lurker who has finally decided to post. As I haven't seen any posts mentioning Emma Shapplin, I shall recommend her. She has two albums out, "Carmine Meo" and "Etterna." She also sang three songs on the Red Planet OST, which were quite good, I might add. - JP Edit...