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Posts by milosz

Built this amp using http://electronics-diy.com/zen-headphone-amplifier.php   Uses 1,000 uF motor run film caps for output coupling (switchable with 1,000 uF Elna Silmic II electrolytic cap for comparison), SIlmic II caps in circuit, IXYS FRED diode bridges, separate transformers / diodes / filters for left and right channels, Alps blue velvet pot, solid metal Switchcraft 1/4" jack, silver / teflon wiring, etc etc.   Signal path consists of essentially only ONE active...
Here's another CAD image.   The 3-circuit ring-tip-sleeve plug shown in the picture above worries me, can't have polarizing voltage on something like that. Are these self-energizing, rectifying audio to provide the bias?  ESP-6 tried that.... not many sold....very heavy if you put transformers in the earcups....   The little coily wires at the top going from one earcup to the other worry me, too, seems like those would eventually fatigue and open up.   Also, these...
 No, but pointing to a 170 dB dynamic range and claiming it makes the DAC audibly superior to typical ~120 dB DACs is a marketing lie.  You said that having a 170 dB dynamic range prevents clipping on orchestral peaks, so you're saying that orchestral peaks exist that are beyond the 110~120 dB dynamic range of a typical good DAC. Can you please tell me which orchestra is capable of such SPL's? If you need 170 dB of dynamic range to reproduce the peaks, I'd like to point...
Interesting to see a DAC claiming over 170 dB dynamic range.   ( http://www.msbtech.com/products/dacSelect.php )   A typical symphony hall has a background noise level between 35 and 50 dB.  5 meters in front of a typical symphony orchestra, max SPL is almost never above 100 dB.  And, of course, further back, say at row 25, it would be lower.   So if a symphony has a dynamic range of 60 to 50 dB, how exactly does a 170 dB dynamic range add to the reproduction of...
The  CK²III is a very nice sounding amp    
JansZen is now under the ownership of David Janszen, son of the late founder / inventor Arthur Janszen.  David Janszen is an engineer AND a musician. JansZen currently makes some very well regarded hybrid electrostatic speakers, which you can see at http://www.janszenloudspeaker.com/  I've heard these speakers and can attest to their good quality. I assume that the ES 'phones will not be hybrids, and will leverage Janszen's 65-year history of successful electrostatic...
JansZen developing electrostatic headphones - crowdfunding discount info...   See  http://www.head-fi.org/t/782955/janszen-developing-electrostatic-headphones-crowdfunding-info
From JansZen's October 3 2015 newsletter:   We're working on headphones.  I've done enough so far on this project to know that it will be possible to make electrostatic headphones unlike any others. Aside from having JansZen electrostatic clarity, they won't need a special interface box. They'll plug right into a portable player or phone and go out with you like any other headphones, although of course the best performance will be with a headphone amplifier.  We'll...
One of appeals of tall  planar speakers (Speakerlab, Magneplanar) and the various multi-driver tall arrays is that their SPL falls off  at 3 dB per doubling of distance as opposed to 6 dB for a point source; in addition reflections from floor and ceiling are much lower in amplitude at the listener's vicinity than the direct sound; hence the "nearfield" listening area of such vertical arrays is larger than typical monitor (point source) type speakers. With such tall...
 What problems are you having?  Stax Mafia giving you any help?
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