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The ultimate DIY? A Stax SRM-T2!


spritzer
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updated parts spreadsheet including resistors for the power supply and

the .1uf/50 volt caps i was missing as i stuffed the board...

(what a mess... the spreadsheet that is, the board is gorgeous)

having imagineering do the circuit boards was definitely a good idea even

though they cost a bit more. Solders just great.

http://gilmore.chem.northwestern.edu/t2parts3.xls

stax X1t ------------- NOPE!

but i am getting closer to wireless hdmi based SACD... :D

Edited by kevin gilmore
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Is a DIY version of the X1t inevitably next? ;)

Hell no!! I'm going to track down and buy the unit rumored to be here in Iceland though. :)

having imagineering do the circuit boards was definitely a good idea even

though they cost a bit more. Solders just great.

Having them made in China wasn't going to be much cheaper and the quality can be pretty shitty. Fine for prototyping though.

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You think those boards weren't made in China?

Chances are roughly 1:3.

Take advantage of what our customers already know -- that Imagineering, Inc. has the experience and capability to fabricate printed circuit boards at our offshore facilities in Korea, Taiwan and mainland China. Collectively, our facilities are UL94V-0, ISO-9002, QS-9000, and IS0-14000 certified. By outsourcing your PCB fabrication needs to our manufacturing partners in Asia we will save you money, regardless of the volume of your production
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after 6 hours of board stuffing

http://gilmore.chem.northwestern.edu/t2ampboard1.jpg

only errors so far, on one side of the amp 2 of the resistors are

labeled as 100k when they are in fact 10k.

Obviously everything fits perfect.

Custom stainless steel hex head screws the exact length should be

in tomorrow, then i can mount the stuff on the heatsinks.

trimpots go on the top of the board for easy adjustment.

missing resistors are backorder :(

A reasonable person should be able to stuff the board in 12 hours...

Not so bad :D

Edited by kevin gilmore
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i love it, stuffed both channels before testing, like an impatient child

But there are 2 power supply connectors, and the whole thing is wired completely

as dual mono. So i built the thing completely so i did not have to go thru

the pile of resistors twice. I can and likely will power up only half of it the first

time.

Besides which the power supply will be tested completely first.

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So with the proper tools that i made myself, stuffing the heatsinked transistors

was a snap. Picture with the tools on the left. Since the tools are dirt cheap

(they take me less than a minute to make) i will probably supply them in the kit.

Better than spending over $300 on the real tool.

tool widths... .1618, .3271,.4780,.5780

I'm going to stick with the following numbers :D

superman (as in justin) assembly time 6 hours

me (as in me) assembly time 9 hours

normal human (everyone else) 12 hours

http://gilmore.chem.northwestern.edu/t2ampboard2.jpg

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I'm going to stick with the following numbers :D

superman (as in justin) assembly time 6 hours

me (as in me) assembly time 9 hours

normal human (everyone else) 12 hours

in the case of Justin, are those the same hours that are used to assemble a BHSE? ;)

I don't quite get how the tools are used, but I'm all for custom tools!

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