AO-43 to Silver Jubilee

Marshall Amp Discussion

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Colossal
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Re: AO-43 to Silver Jubilee

Post by Colossal »

Sweet amp Tony. That's a lot of work. Nice work on the heaters too.
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dorrisant
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

Thanks guys!

I do have a laser... but it wasn't used here. This was engraved on my CNC then filled with enamel.

This build is going fast but it gets paused for repairs and two builds for customers in que now... so it may seem to trickle along. I have to put it out if sight, out of mind so the bills get paid, lol.

Anyway, just wiring left. Can't wait... gotta wait. :roll:
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Re: AO-43 to Silver Jubilee

Post by andresound »

Beautiful work 👍
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Faze
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Re: AO-43 to Silver Jubilee

Post by Faze »

Beautiful work. What CNC do you use?
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

Faze wrote: Sun Sep 22, 2019 3:27 pm Beautiful work. What CNC do you use?
Sorry, been a while.

This kit: https://www.ebay.com/itm/CNC-Mill-Route ... 2907476336
P1A-S MPG pendant: http://www.vistacnc.com/a04_purchase/purchase.htm
Last edited by dorrisant on Fri Nov 20, 2020 8:09 pm, edited 1 time in total.
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Re: AO-43 to Silver Jubilee

Post by Colossal »

Great looking build, Tony! Very clean!
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Re: AO-43 to Silver Jubilee

Post by pompeiisneaks »

dorrisant wrote: Fri Nov 20, 2020 3:36 pm
Faze wrote: Sun Sep 22, 2019 3:27 pm Beautiful work. What CNC do you use?
Sorry, been a while.

This kit: https://www.ebay.com/itm/CNC-Mill-Route ... 2907476336
P1A-S MPG pendant: http://www.vistacnc.com/a04_purchase/purchase.htm
The ebay link got broken somehow...

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dorrisant
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

pompeiisneaks wrote: Fri Nov 20, 2020 7:01 pm The ebay link got broken somehow...

~Phil
Thanks Phil... fixed it.
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angelodp
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Re: AO-43 to Silver Jubilee

Post by angelodp »

Wow, artful. Bet it sounds great.
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srx430
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Re: AO-43 to Silver Jubilee

Post by srx430 »

Hey dorrisant,

that is one beautiful build! I was searching on how to mill turret boards and found your posts. Thanks for all the tips you provided :) I got myself a Shapeoko CNC and want to put it to use soon.

I converted an AO-43 for a friend a while back. Changed the output to 6V6, just as you did. I dropped the tube rectifier. If the question from your first post is still relevant: I had a plate Voltage reading of 420V (diode recitifier). Good iron on these Hammonds. Added another preamp tube, heater voltage didn't drop. The OT is beefy. The amp put out 18V RMS, tested with a 1kHz sine wave @ 8R load. I made that 22W, since Fender does the same with the Deluxe Reverb :P

The chassis is tight, but your conversion looks very clean. Nice layout. I like your job on all those leads and nice details like those Allen screws.

Cheers from Germany!
Georg
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

srx430 wrote: Fri Jan 29, 2021 12:34 am Hey dorrisant,

that is one beautiful build! I was searching on how to mill turret boards and found your posts. Thanks for all the tips you provided :) I got myself a Shapeoko CNC and want to put it to use soon.

I converted an AO-43 for a friend a while back. Changed the output to 6V6, just as you did. I dropped the tube rectifier. If the question from your first post is still relevant: I had a plate Voltage reading of 420V (diode recitifier). Good iron on these Hammonds. Added another preamp tube, heater voltage didn't drop. The OT is beefy. The amp put out 18V RMS, tested with a 1kHz sine wave @ 8R load. I made that 22W, since Fender does the same with the Deluxe Reverb :P

The chassis is tight, but your conversion looks very clean. Nice layout. I like your job on all those leads and nice details like those Allen screws.

Cheers from Germany!
Georg

Thank you sir! You words are very kind.

More setup info is posted here: https://ampgarage.com/forum/viewtopic.php?t=31656
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dorrisant
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

More pics of the finished project...

Also, I posted a board layout for this amp on the first page. Enjoy. It is verified.
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Re: AO-43 to Silver Jubilee

Post by timrobertson100 »

Thanks indeed for posting the DIYLC files for this. Do you recall if you ended up using 3x 50/50uF cap cans for this 6v6 build or did you go lower, please?

It's a beautiful build.
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

32/32 caps
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Re: AO-43 to Silver Jubilee

Post by dorrisant »

I'm building a second one of these and quite possibly a 3rd and 4th... Anyway, I see errors in my DIYLC layout. Please be aware and I will update the 1st post here when I have edited it well enough.
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