90s AC30TB revival/rebuild
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beasleybodyshop
- Posts: 1069
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
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90s AC30TB revival/rebuild
Had this 90s Korg Era AC30 come in years ago for repair and the PCB board was so badly burned It became a basket case. Customer dropped off the planet and never came back so now I'm going to do it justice and decided to gut/rebuild to the earlier AC30 with the EF86 and top boost channels. Added the matchless tone control for the EF86, and a PPIMV. I also designed a repro style faceplate to top it all off.
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"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
Re: 90s AC30TB revival/rebuild
Oh! Do the tag strip dance! 
I build and repair tube amps. http://amps.monkeymatic.com
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beasleybodyshop
- Posts: 1069
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
Re: 90s AC30TB revival/rebuild
Mostly complete. Waiting on a PT now
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"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
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beasleybodyshop
- Posts: 1069
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
2 others liked this
Re: 90s AC30TB revival/rebuild
And Done. She sounds great. I went with Matchless DC30 specs on everything, except cooled the bias so there's only 10W dissipation per tube.
Subbed the tube recto with a SS one and a100R 10W resistor inline to emulate the drop of a recto. Sounds like it should and be more reliable.
6BR7 tube subbed for the EF86. No noise or microphonics of note. Sounds killer. My favorite pentode sub for these builds.
Subbed the tube recto with a SS one and a100R 10W resistor inline to emulate the drop of a recto. Sounds like it should and be more reliable.
6BR7 tube subbed for the EF86. No noise or microphonics of note. Sounds killer. My favorite pentode sub for these builds.
You do not have the required permissions to view the files attached to this post.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
Re: 90s AC30TB revival/rebuild
Nice clean build. Congrats.
Tube junkie that aspires to become a tri-state bidirectional buss driver.