Supro Coronado Build

[craigtone]

Thanks to a few members on this forum I was able to piece a schematic and layout (albeit backwards) for a 1690T build I'd like to do.  I have a good bit of experience with building tube gear, mostly hi-fi.  This is my first go with DIYLC and I really wished I had found this years ago!  Custom turret boards are WAY easier to deal with than tag strips!

Anyway, here is the schematic I used and my chassis drawing.  I'd appreciate any input since it is my first time using it.  I did find I had to save off the PCB to a separate file and move it to 0,0 in order to get the DIY Analyzer to see the board properly. 

PT will be 272FX, OT 125E to emulate the undersized OEM OT.  Chassis is an undrilled JTM45 and I'm hoping to find someone to fab a cabinet for me since finger joints are WAY outside of my ability!    

I haven't searched yet here but does anyone do custom raw cabs?  I have basic dimensions sketched up.

Thanks in advance!

[craigtone]

I just realized I forgot to hook the tremolo to the Ch2 V1 cathode ... fixed!

[Latole]

Cabinet;

No need to built a finger joints.
I built few no finger joints and they do the job. just need some corners and screw and glue and more time.

Finger joint is only the cheapest and solid cabinet you can built; need only glue
And they are fast to built if you have the tools

For any kind of cabinet, see you local carpenters or cabinet maker. Any onybody can built one for you, it is just a wool box.
Finish by yourself.

[thetragichero]

i do box joints with hardwood dowels and wood glue. i like the idea of the base cabinet being 100% wood. eight right angle clamps make assembly easier

[mk_716]

FWIW, I've used butt joints with a Kreg Jig.   Use 1" screws  if you're rounding over the edges (not the recommended 1 1/4" if using 3/4 stock).   There's a pocket version of the Kreg jig that's pretty reasonable.   Great tool really.

Seems very solid.   I don't think I'd do box joints unless they were going to show on a stained/finished cab.

mike

[bmccowan]

The Ebay vendors who sell finger joint or dovetail joint cabs will do custom cabs for you. I build my own finger joint cabs, its easy if you have the tools, but the part I hate is gluing on the Tolex or tweed. Although the contact cement hallucinations can be entertaining.

[sluckey]

Here's another 1690T thread that you may be interested in...

     https://el34world.com/Forum/index.php?topic=27432.0

And here's a recent 1696TN thread. Very similar amp circuit.

     https://el34world.com/Forum/index.php?topic=28606.msg314945#msg314945

[craigtone]

Here's another 1690T thread that you may be interested in...

     https://el34world.com/Forum/index.php?topic=27432.0

This is where I got most of my info.