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Everything posted by kevin gilmore
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Nope. Amplifier is fully balanced output. Single ended input, or balanced input does not matter.
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The stuff i have indicates that this is not true for that unit. Besides which 2 meg into a 10 meg dvm would still be 395 volts and that is still low.
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It is affordable. Besides which half the cost is the name on the front. Sort of like Zenith used to be. The quality goes in before the name goes on
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much better is a few grams of mercury in their front and back yards, and on the front steps. Takes a few months...
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Best SS-amp Today; Cost NO Object?
kevin gilmore replied to Contrastique's topic in Headphone Amplification
posted on headwize 2 versions of each board, one with the fets i like, one with the fets amb likes one with heatsinks on the board, one with the bracket version http://gilmore.chem.northwestern.edu/dynahifetr.zip http://gilmore.chem.northwestern.edu/dynahifetrhs.zip http://gilmore.chem.northwestern.edu/dynahifeti.zip http://gilmore.chem.northwestern.edu/dynahifetihs.zip knock your socks off -
Best SS-amp Today; Cost NO Object?
kevin gilmore replied to Contrastique's topic in Headphone Amplification
I published 4 different board layouts. Complete, ready to go to a board house. Find someone who wants no end of aggrivation to make a group board buy... Ain't gonna be me... -
Something is definitely wrong with the bias circuit if you measure only 380 volts before the ballast resistor. Likely one of the 2 diodes.
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Best SS-amp Today; Cost NO Object?
kevin gilmore replied to Contrastique's topic in Headphone Amplification
Actually a well built dynafet. Trouble is no one is building them right now, if it is on justin's list it is likely 2 or 3 years from now... And i desperately don't want another occurance of trevor-networks plastic and superglued pieces of shit. -
But clearly the problem was the glass of orange juice to go with the bacon and eggs.
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here you go http://www.go2marine.com/category.do?no=13120 you can use the cable tie anchor mounts, or the plastic cable straps or what i was thinking was the line support clips. What i was originally referring to is called line support clips here...
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sideways capacitor clamps. Basically a loop of steel, usually with insulation and a mounting tab you secure to the chassis.
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And a year ago tomorrow, my best friend died after a night of drinking. About 1.5 bottles of jack daniels, followed by 4 eggs, 8 strips of bacon... and then bang a heart attack.
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WIMP!
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Best Tube Amp Today? Cost maybe an object
kevin gilmore replied to fierce_freak's topic in Headphone Amplification
mikhail has 2 different tube dynamic amp circuits. 1) white cathode follower, which is a cathode follower with a boost to the bottom tube from the plate of the top tube. This is everything mikhail makes both unbalanced and balanced, with the exception of... 2) the extreme. which is a standard cathode follower, with really large output tubes into a resistive current sink. craig's zana deux is an upside down extreme. Then you get into multiple filament voltages, multiple plate voltages, capacitors the size of 2 quart juice cans, various different chassis, gold plating, step attenuators, remote controlled attenuators, different tube adapters, and even a piece of the moon extracted from the dark side. plus an infinite selection of expensive coupling, cathode and output capacitors. All of the electrostatic amps are the same amp circuit. (stax srx) Once again, many different kind of gain and output tubes, at least 3 different kinds of power supply (normal, silly, and ludicrous speed), different chassis and even a piece of the moon extraced from the light side. Highly dangerous (if you drop one) mercury rectifiers, neon gas tubes, glass time delay relays. plus a selection of expensive coupling caps. The solid state things are basically abortions. All of ray's tube things are SRPP. We will see what his electrostatic thing is soon -
Best Tube Amp Today? Cost maybe an object
kevin gilmore replied to fierce_freak's topic in Headphone Amplification
the mpx3 is a WCF. similar to this http://headwize.com/projects/showfile.php?file=cmoy5_prj.htm -
Are any of you surprised at the crap that jenna labs does. Many people are happy with their way overpriced crap because they never look inside. $3k for that, you gotta be kidding. Take a look at the APL modified dennon posted here. I have no idea whether or not it really sounds great or not, but that modification job is pure crap. The circuit board held on with one screw, and either hot glue or rtv all over the place. Pure garbage. You should see some of the hack jobs the usa distributor of stax (yamas) has done. Also pure crap. People should start doing this stuff themselves. It can't get any worse.
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or an original singlepower toaster... kind of wonder what would happen if nate could get his hands on some of my NC toys... one point off for the gluing of the 2 caps to the chassis in the power supply...
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Sennheiser Orpheus HE90: by what was the "second batch" different?
kevin gilmore replied to greenhorn's topic in Headphones
Was waiting to see if someone other than myself knew the right answer... guess not. Its actually 3 resistors added per side. A series 5 meg resistor to the diaphram and 2 x 100 meg resistors from the diaphram to each stator. Takes about 9% off of the bias, so down to about 525 from 580. Works fine with any amp with a stable output voltage of 0 volts dc, otherwise creative things might happen. If you plug those headphones into a real hev90 plug set for 500 volts the bias will now be 10% too low. -
I agree. Highly unusual, but thems the facts.
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Best Tube Amp Today? Cost maybe an object
kevin gilmore replied to fierce_freak's topic in Headphone Amplification
you really want one of these... notice the price http://www.elusivedisc.com/prodinfo.asp?number=EMXAMPANIV -
Lets not forget that tyrion is still a lawyer. But he sure has managed to go cold turkey with respect to being a ray samuels fanboy.
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thread derailment, sure why not. I thought that the colour of magic movie was absolutely splendid. I got to see it in full high-definition. I want to see more of the disc world stuff turned into more movies.
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Not bitter. Not even the slightest bit. Well maybe some bitters as part of passover. They are not my products. They are my designs, and a justin has done an unbelievable job of execution and selection of parts.Trust me you will never get to hear the stuff i have built for myself and you are unlikely to touch the stuff i have built for friends. If you like or hate the GS-X it will make no difference to me. My opinion of you will not change. If you really don't know the difference between a sine wave and a square wave then you really should not be reviewing power products as clearly thd would be meaningless for a square wave. Shows how stupid you really are.
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Steve Hoffman/Kevin Gray Blue Note Remasters to be Released on SACD!
kevin gilmore replied to Voltron's topic in Music
http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&XID=O:scd-xa9000es:dg_ggldf&kw=scd-xa9000es&lp=11039766&productId=11039766 however the output is encrypted and you need something to de-encrypt the output. Even the new meitner stuff is encrypted. (the old stuff was not, but nothing played it anyway) Your dac would do no good as it can't eat a DSD signal which is 2.56 mhz and equivalent to and directly convertable to and from 24 bits at 192 khz. -
Steve Hoffman/Kevin Gray Blue Note Remasters to be Released on SACD!
kevin gilmore replied to Voltron's topic in Music
Yes, and a krell sacd standard, and a few others... The sony gets very little use.