shipwreck wrote: ↑Tue Apr 25, 2017 12:25 pm
We need pics/details
It was a big old pa running four 6550s or 66ca7 s:
rps20170425_103434_494.jpg
rps20170425_103511_586.jpg
I wanted something compact so I stripped it and hacked up the chassis for prototyping. Ended up deciding to try the express preamp with two 6550s for the power section.
I worked from the Kelly 90 schematic:
Screenshot_20170424-165706.png
And the Todd Hepler turret layout, as I've never transposed a schematic to a board before:
Screenshot_20170424-165907.png
Ok, no guffaws at my redneck build
[attachment=0]rps20170425_104131_469.jpg[/attachment
I'll post the gut shot below, it won't fit in here.]
My plan is to get it to a reasonable sounding state, ignoring wire cross hum etc - and then build it all properly into a new chassis. I made the turret boards real quick from fibreglass and banged some cheap eyelets in them.
The final build would place the tubes better, more spacing perhaps. At least it now only measures 14 1/2" length, so about 16" overall in a nice case I'll build later.
It also contains a bunch of old stranded car wire in it right now, as I can't get any solid core 18 or 2016 awg around here. I'll order some with right colors online, to rebuild.
Any suggestions or pointers much appreciated!
![Very Happy :D](./images/smilies/icon_biggrin.gif)
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