AC15 Build

[J Rindt]

Have any of you guys built an AC15 of some type or another.?
I have a Chassis and cabinet from an old Crate V18 that I thought I could use for an AC15 donor.
Do not think I have ever seen a layout for this amp, and was wondering what you guys did.
Not sure if anybody makes a turret board for this amp, or if it is more a matter of using turret strips to make the circuit.
Any ideas/help would be appreciated.
Thank You

[archaos]

I've never built an AC15. Yet I've already built 2 x AC30s from scratch : one using an Hoffman board, the other à la JMI (turret strips).

If I were you, I'd build a turret board for that amp, it's far better : you can design the circuit like do Kevin O'Connor or Merlin Blencowe (with galactic grounds), & it's neat-looking (attached the guts of my 5E3).
Turret strips look vintage but are messy IMO.

[birt]

this is an AC15 with a 12AX7 preamp and an EF86 preamp (EF86 values but i used a 6AU6)

[tubenit]

http://www.el34world.com/Forum/index.php?topic=6642.0


AND  .........take a look at these.  You may find this very useful to draw up a schematic and layout.

http://www.el34world.com/Forum/index.php?topic=5048.0

http://www.el34world.com/Forum/index.php?topic=1890.0

http://www.el34world.com/Forum/index.php?topic=4996.0

http://www.el34world.com/Forum/index.php?topic=575.0

With respect, Tubenit

[tubenit]

http://media.photobucket.com/image/AC-15%20layout/fabiomayo/VoxAC15-30Layout2007-08-17b.gif

from a google search

Tubenit

[tubenit]

This looks like a decent layout.

Tubenit

[J Rindt]

Thanks for the ideas/photos so far.
I can probably use some type of "generic" turret board. Something like you would see in a Hiwatt.....kind of long and narrow.
Thanks Again

[tubenit]

I drew this up thinking it could be an interesting idea.  You'd have an AC15 tone using a 5879 (less microphonic) instead of a EF86.
AND you could switch in a HoSo56 tone.   It also has switchable active FX loop.

Could be a cool amp?  Not sure about the coupling caps after the LTPI. I put down .047 but would probably build it myself using .033.

With respect, Tubenit

[moonbird]

Tubenit -

A very interesting spin on the AC15. What PT voltage does this design want? I am looking for AC-30 kind of chime and articulation for country tunes. Probably looking for a poor man's top-boost circuit I suppose. Will this design deliver that you think or could something be added?? If I wanted reverb, I presume I could add your "single 12AX7" verb design from the 56T at the effects loop. Thanks very much for posting this!!

[tubenit]

If I were building it, I'd want a PT that was 275-0-275 and had 150ma.  You might be able to use a 300-0-300 with a 5Y3GT?
Just check the tube data for an EL84


With respect, Tubenit

[J Rindt]

Tubenit.....
In your previous 2 links, are they of the same schem.? I ask, because I cannot open the second schem that uses the Microsoft Schedule Plus program.
Thank You

[balcorn80]

Tubenit.....
In your previous 2 links, are they of the same schem.? I ask, because I cannot open the second schem that uses the Microsoft Schedule Plus program.
Thank You

Download Jschem or PCBExpress to open the .sch files. I just learned about these programs last week, and have already started putting my hand-drawn schematics into electronic form(even I have a hard time reading my chicken scratch) plus it makes it easy to make any changes between your paper/electronic schematic and what actually worked for you. Just a suggestion.

http://dhost.info/jschem/


http://www.expresspcb.com/expresspcbhtm/Download.htm

[J Rindt]

10-4
Thank You