Aitken Audio/Ampstack collab 200w guts

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Aitken Audio/Ampstack collab 200w guts

Postby Mr. Foxen on Sun Jun 08, 2014 6:10 pm

Stripped iron out of a destroyed Sound City 200 PA and a powder coated chassis from another. New amp built in it by Aitken Audio. http://aitkenaudio.tumblr.com/
https://www.facebook.com/pages/Ampstack ... 39?fref=ts
https://www.facebook.com/AitkenAudio?fref=ts
Image
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New music: https://warriorpope.bandcamp.com/album/anchorite
Gear tinkering blog: http://ampstack.wordpress.com/
Made a Facebook page for my ampguts stuff. Feel free to come post amp guts and rig shots: https://www.facebook.com/pages/Ampstack/351966881575839
Mr. Foxen
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Re: Aitken Audio/Ampstack collab 200w guts

Postby Papa Dog on Thu Jun 12, 2014 1:35 am

Oli,
I understand that you used 200+ iron, but amnot sure that I understand the chassis.
That does not look like a 200 nor a 120...maybe an early 100 Mk3?
Anyway...that is an interesting build...not sure I get what you were going for, but it looks interesting.
Whats the deal with 3 solid block bridge rectifiers? The 200s had 2 bridges (4 diodes) so whats the third one do?

The way he hooked the power valves in an interesting way...
Am looking forward to sound clips
There Ain't No Such Thing As A Free Lunch.

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"To talk of many things:
Of shoes--and ships--and sealing-wax--
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Re: Aitken Audio/Ampstack collab 200w guts

Postby Mr. Foxen on Thu Jun 12, 2014 2:52 am

Chassis was from this weird 200 Pa converted to SS I pulled apart: http://ampstack.wordpress.com/2012/07/2 ... -sc200-pa/

Maybe got extra holes and stuff from that conversion job. The iron came form the 200 PA that had been either under water or in a place with water flowing over it, the box had crumbled and the chassis rusted badly. Semi surprised they checked out OK.

Third rectifier block is doing the bias, get more negative voltage as an option that way.

Just had him add a standby (he doesn't believe in them, I want it as a mute and convenience for when poking about inside).

General idea was simple, but still interesting/different, hence 6SN7 drive stage, also very low noise.
New music: https://warriorpope.bandcamp.com/album/anchorite
Gear tinkering blog: http://ampstack.wordpress.com/
Made a Facebook page for my ampguts stuff. Feel free to come post amp guts and rig shots: https://www.facebook.com/pages/Ampstack/351966881575839
Mr. Foxen
Squire
 
Posts: 792
Joined: Fri Aug 13, 2010 9:37 am

Re: Aitken Audio/Ampstack collab 200w guts

Postby Mr. Foxen on Sat Jul 05, 2014 3:17 pm

Arrived and valved.
Image
New music: https://warriorpope.bandcamp.com/album/anchorite
Gear tinkering blog: http://ampstack.wordpress.com/
Made a Facebook page for my ampguts stuff. Feel free to come post amp guts and rig shots: https://www.facebook.com/pages/Ampstack/351966881575839
Mr. Foxen
Squire
 
Posts: 792
Joined: Fri Aug 13, 2010 9:37 am

Re: Aitken Audio/Ampstack collab 200w guts

Postby Mr. Foxen on Sat Jul 05, 2014 8:53 pm

Slung it in a spare box for tryout at practice space:
Image
New music: https://warriorpope.bandcamp.com/album/anchorite
Gear tinkering blog: http://ampstack.wordpress.com/
Made a Facebook page for my ampguts stuff. Feel free to come post amp guts and rig shots: https://www.facebook.com/pages/Ampstack/351966881575839
Mr. Foxen
Squire
 
Posts: 792
Joined: Fri Aug 13, 2010 9:37 am


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