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Posts by MDR30

Right, but he did not demonstrate that the magnetic system of top and bottom plates (the latter with the very tight tolerance gap for the coil) and inbetween circular magnet are held together only by the magnetic force. If these parts are moved out of position ever so slightly the voice coil will scrape against the gap's walls. Beyer had precision tools to assemble these parts. I advice anyone not to unscrew the centre piece unless there's a problem already. All these...
This little wolf in sheep's clothes sound terrific with the right amp, balanced. Here's a pic with the OTL single end output Audiotailor Jade:     Some data of the HD565:   http://data.manualslib.com/pdf/16/1509/150883-sennheiser/ovation_hd_565.pdf?790157ff15d1d61597f8e64798037971&take=binary
 I would say different damping of the drivers, and possibly the condition of the pads, are the most likely reason the two models sound different. I once asked Wualta if he'd noticed any difference in sound between the two HP1 drivers, and if I remember correctly they sounded basically the same.
Some times, your aural impressions outshine previous experiences. That was the case with the Audiotailor Jade balanced output.   I've discovered new "realistic" spatial information in loads of 1960s and 1970s recordings, where ambience and "leaks" are adding to the musical enjoyment. What we call three dimensional reproduction.   Sergio Mendes, Dave Brubeck, Simon and Garfunkel, Bert Kaempfert, Burt Bacharach... they put time and effort in musical arrangements and...
Just listened to the trio version of Red and the instrumental Fallen Angel (virgin tapes) of the remastered King Crimson album and what of a musical impact it is! Those wonderful chord changes... I'm amazed what these headphones, with drivers designed in 1937, are capable of.
Needed to separate the steel headband from the plastic yoke. All you need is a flat bladed knife. Insert it carefully between plastic and steel, then gently pull the metal piece out. Done. Clicks easily back into place. Some lubrication with a pencil will help if there's a squeak problem.   
My present everyday set-up:     Modified K500 connected balanced (two plugs), a special trick of the anode/cathode output of the Audiotailor Jade. Terrific sound stage and airiness. GEC 6AS7G (or Tung Sol 5998) output tube, Telefunken ECC808 driver tube (with adapter).     The standard K500 has a 1/8-1/4 inch plug, and if you've lost the adapter I've found a replacement. This adapter doesn't have the usual thread, but a larger one. AKG original to the left,...
Returned to these again after I've made some improvements on the amp front, and they sound better than ever. There's attack, presence, resolution and power. If you spot a pair - grab them.   Here are the three different versions:  
Tried my hands with these, the usual tricks, but found it very difficult to make them cooperate.The drivers are beautiful (my avatar) and look very well engineered. I'd be happy to learn from your experiments.
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