October 25, 201114 yr If you think the 404LE would be a worthy donor, Tyll. I think it's stock. Purchased here from Birgir, but his FS thread apparently didn't survive the new forum software. That one was 100% stock. Lovely headphone too...
November 6, 201114 yr And on that note, the gear is on its way back home... the epic journey nears its end!
November 6, 201114 yr Thank you soooooo much Alex, and all you Stax Mafioso. That was a nice bit of teamwork there, and I'm very glad we've got some data for everyone to look at. Now, back to the rapper cans .....
November 6, 201114 yr STAX should team up with some celebrities. Philip Glass, Jean Michel Jarre or even Aphex Twin!
November 6, 201114 yr Say Birgir, what's the deal with all the out-of-polarity measurements? Are they just wired up that way? Is the Blue Hawaii basackwards? I saw you post something about switching polarity, IIRC.
November 6, 201114 yr Say Birgir, what's the deal with all the out-of-polarity measurements? Are they just wired up that way? Is the Blue Hawaii basackwards? I saw you post something about switching polarity, IIRC. Only the Sigma's and a couple of the really old Stax models (60's and 70's models) were wired out of phase. I haven't cracked the BHSE open but I see no reason why it would be wired out of phase but I'm sure Justin will chime in on that. Not sure what's going on.
November 8, 201114 yr Thank you soooooo much Alex, and all you Stax Mafioso. That was a nice bit of teamwork there, and I'm very glad we've got some data for everyone to look at. Now, back to the rapper cans ..... Have you posted the HE-60 measurements yet? Thanks for doing those.
November 8, 201114 yr OMG - the Sigma response looks like a roller coaster ride and the 30 Hz square wave isn't. Not sure if this is the Sigma normal bias or the Sigma/404. Measurements bad, sound good. Edited November 8, 201114 yr by John Buchanan
November 8, 201114 yr Say Birgir, what's the deal with all the out-of-polarity measurements? Are they just wired up that way? Is the Blue Hawaii basackwards? I saw you post something about switching polarity, IIRC. what source are you using? is it XLR inputs?
November 8, 201114 yr Something is wrong with the right driver on those HE60's but other than that the measurements look good. The Sigma's I think were 404's and I don't think anybody was expecting a stellar measured performance. They do sound pleasant enough but compared to the Omegas they are highly colored. Much like the SR-1 and other Stax sets it is a very pleasant coloration.
November 8, 201114 yr Something is wrong with the right driver on those HE60's but other than that the measurements look good. Is that based off of the THD vs. Frequency graph?
November 8, 201114 yr ^^^ Huh ... didn't know that. It was from a HeadRoom balanced desktop so I think pin 2 is hot. 'Mercan standard?
November 8, 201114 yr ^^^ Huh ... didn't know that. It was from a HeadRoom balanced desktop so I think pin 2 is hot. 'Mercan standard? balanced desktop as what...dac? preamp?
November 8, 201114 yr Is that based off of the THD vs. Frequency graph? Yup. It could be something as simple as the o-ring not seated properly. Wouldn't surprise me given the sub-par service Sennheiser has in the US.
November 8, 201114 yr balanced desktop as what...dac? preamp? Just a headphone amp. Balanced in from the Audio Precision balanced outs. Polarity should be right through the amp as it drive regular headphones in proper polarity. Positive going signal creates positive pressure pressure at the ear.
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