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Your is the first and heroic build
Bravo and ThanksPlease more about Baroque quartets and Jazz etc.
Wiring pics
In spirit of pictures, here’s my ‘best of’ from wiring...
Definitely pays to plan ahead at this stage. Also, more than one way to skin a cat.
In spirit of pictures, here’s my ‘best of’ from wiring...
Definitely pays to plan ahead at this stage. Also, more than one way to skin a cat.
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Looks great! Can I ask what is that with which you wrapped the two Jfets on the Front End boards? And what is it's use?
Thanks,
Rafa.
Thanks everyone.
@rafa, they are little thermal caps that my jfet ‘dealer’ throws in the box every time I buy a few Toshiba’s. They are meant to aid in the thermal coupling of the two devices, just like zip ties or heat shrink are often used. Not necessary, but I figured I’d use them since I had them.
To be honest, they may be a bad idea being in such close proximity to the Edcor. I slipped them on and off while I was doing my quick measurements earlier and didn’t see any changes, so who knows.
@rafa, they are little thermal caps that my jfet ‘dealer’ throws in the box every time I buy a few Toshiba’s. They are meant to aid in the thermal coupling of the two devices, just like zip ties or heat shrink are often used. Not necessary, but I figured I’d use them since I had them.
To be honest, they may be a bad idea being in such close proximity to the Edcor. I slipped them on and off while I was doing my quick measurements earlier and didn’t see any changes, so who knows.
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Tip from Jim. Remove label from the Arctic silver thermal goo. You’ll see it’s 8 mL to start. Use 4 mL per side. My weapon of choice spreading it is a razor blade I had on the bench. Also, figure out where you’re going to screw it down before spreading the goo.
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well if you're gonna be grumpy all the time, might as-well be funny and informative too.
Wow, you guys are FAST! So many posts in the last day... great to see.
While I'm still waiting for chassis and some time to fire up the soldering iron, at least I've been able to noodle on some aspects of this build... and I remembered a special box that I had tucked away. I always knew I'd find a good use for these beauties (future upgrade, will build the stock kit first, then start work on a front end of my own design)... 290kHz and +27dBu's worth of quadfilar deliciousness. Roughly the same vintage as those Sony VFETs, too.
While I'm still waiting for chassis and some time to fire up the soldering iron, at least I've been able to noodle on some aspects of this build... and I remembered a special box that I had tucked away. I always knew I'd find a good use for these beauties (future upgrade, will build the stock kit first, then start work on a front end of my own design)... 290kHz and +27dBu's worth of quadfilar deliciousness. Roughly the same vintage as those Sony VFETs, too.
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Coolnose nailed it. The breakaway ones are nice to work with, and hold all the pin receptacles lined up and square for you while soldering.
One possible source:
Mill-Max p/n 310-43-124-41-001000
Mouser p/n 575-3104312441001000
$2.90 for a 0.1" SIP strip of 24 pin receptacles. Perhaps a bit more expensive than other sources, but I've bought these ones in the past and they work fine.