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Posts by analogsurviver

As a "collateral damage" ( I was looking for measurements of Beveridge 2SW loudspeaker, which was measured as having 0.03% THD over much of its frequency range close to max output - with a microphone in an anechoic chamber ) I stumbled upon these :   http://www.annuarioaudio.it/vintage-hi-fi/test-recensioni-prove/stereoplay-a/   There are vintage receivers and amplifiers tested, sometimes even X vs Y...
No such thing as a vintage balanced receivers. Balanced started appearing in consumer high end audio separates years after receivers fell out of vogue. There might be some lone wolfs that are internally balanced and only have unbalanced RCA inputs - but that would drive the cost up so much to be seriously overpriced relative to single ended competition. Possible yes, likely no. Balanced is WAAAY overrated for consumer audio. Think about the fact that none of the true...
I sincerely do hope the new Orpheus will fare better than IE800. In MFR's description, they were hailed as best ever IEMs. In audition, they lasted about 10 minutes max with me. After seeing the measurements by third party, I knew why. I did already write in these pages about the best "loudspeaker" ever. It was a Bruel & Kjaer "electrostatic loudspeaker", which they threw together as a joke or show, whichever you prefer, at the time the 4006 microphone was new. Some 2-300...
Yes, I can. Published by German audio press, IIRC Stereoplay, around 1978. I will look up trough my files - I have photocopies somewhere. Lots of superb objective measurements has been done in 70s and 80s by Instituto Alta Fedelta - IAF, in Rome, Italy. Lots of these were being published in Suono, Italy, Stereoplay, Italy - as well its sister publication Stereoplay, Germany. In the same issue were  were also tested Quad ESL ( now known as Quad 57, then there was no other...
Khaki green with violet dots for me - as long as they sound right. 
Tubes are inherently high voltage low current high impedance devices - compared to solid state low voltage, high current low impedance . Now there might be some odd exception to the above rule, but generally this does hold true. Solid state is FAR less rugged than tubes - and devices that are being used in ss ES amps are disappearing by the minute - because, in electrical terms, electrostatic amps are the same thing as used in cathode ray screens of TVs for horizontal...
My friend coined the best one: We all like our sports bulldozers with low mileage - for free !
It is the composite - a clever electrostatic driver design uses the necessary evil, the clamping surround, also as means of damping of the stator material(s).  It is not how loud the unwanted sound is  - but the quality of that resonance, mechanical Q is important. If the driver rings - no use of  in theory superior driving principle.Please see the measurements for Stax IEMs - smaller, better than its larger siblings ! And there are dynamic drivers that can top even that...
Something like that. The most open stators I remember were those built by Sanders in late 70s - piano wire rods all across the surface, with every second wire removed - and that yields less than 50 %, once the clamping periphery and some stiffening across the rods is applied.  If it were possible, AKG would have gone with electrostatic principle for the K-1000 ; as the design requires as acoustically open driver/baffle, they had to invent a dynamic driver with more than...
It is always interesting to learn the new hitherto unknown words and/or their meaning !
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