New Posts  All Forums:

Posts by jcx

no one has ever advertised, sold phono cartridges with -60 dB crosstalk spec, alignment tools that would make that happen many $k cart only spec "better than 30dB" channel separation, a very few 40 dB phonograph tracks are mixed to mono at low audio to make them practical to cut, play 
the point that good headphones are valuable for a different look into a recording is clearly valid   but that veers off the "sound engineering" course into a classic of the audiophile connoisseurism genre, promoting audiophile brands, the  buying more, different pieces of expensive hardware for the sonic "taste"   I'm surprised Bob Katz would let his name be used that way   hearing their opinions on EQ, Virtualization would a lot more valuable
poor system gain structure is the usual issue when audible hiss is encountered - with ES headphones and their dedicated amps things aren't so bad as people using amps with too much gain to drive too sensitive headphones   Stax ES "earspeakers" have ~ 100 dB/100V sensitivity, the amps typically 500x (SR727, Justin's BHSE) or 1000x (original Blue Hawaii) gain   I don't have enough of the history at hand - but likely dropping ES amp gain to 500 is a recognition of the...
the "loosing bits" heuristic is overdone, audio  DAC tech has improved since mid 1980's barely 14 bit linear ADC/DAC at the beginning of the consumer digital audio era   now flagship audio DAC have >120 dB weighted S/N - you have to have your music peaks hitting 120 dB SPL for the DAC noise to even reach the human hearing threshold in quiet after minutes of accommodation - not a limitation while listening to music peaking at 120 dB SPL   so if your system's gain...
Circlotron is different, but is it a win when the 4 output Q you save cost <$4 each   I'd guess you end up spending more on the custom xmfr(s?) for the floating supplies   do mind the pri-sec, sec-sec winding coupling - shield reduces noise coupling but adds C   - like to see what Mister uV supply noise does with this
dissecting the puffery can be fun, seeing what makes fanboys drool could be profitable down the line...
   there's always EQ - much cheaper to get one decent, mostly flat full range response with low distortion headphone - then make it sound like you want EQ can be done at a much higher quality and level of sophistication than many appreciate - just doesn't get you the name dropping, conspicuous consumption, audiophile connoisseur points http://www.head-fi.org/t/612665/how-far-can-eq-really-go-towards-truly-equalizing-headphones#post_8429154 below Quote:  for more fun think...
http://headwize.com/?page_id=79 is the original source - I don't know how it evolved at HeadAmp   from eyeballing the circuit the psrr could be pretty high - 1st order is all good with ccs tail sources, matched fets, matching drain loads, heavy degeneration and gnd referenced V gain     the Gilmore article gives open loop gain of 35, the article's feedback setting a gain of 10 means ~ 10 dB more psrr from the negative feedback     gain of 10 is too high for grados...
balanced? - a major issue is "the pin 1 problem" - http://www.rane.com/note165.html   maybe Justin can tell us more about the BHSE XLR outer shell metal shield to case conductivity quality?   4 screws may be OK, but paranoia would involve selective plating for a conductive surface on the Al that the XLR would make 360 degree contact with
intelligent discussion of cables can only occur in "Sound Science" given the rabid censorship in "Cables" - no objective commentary whatsoever is allowed in the Cables forum - the original "no DBT" forum here - even bare LRC measurements without any subjective/audibility commentary have been removed there
New Posts  All Forums: