Monkeymatic Hammond Stout

Tubelube · Post by **Tubelube** » Sat Jan 17, 2015 7:36 pm

Thank you xtian for your valuable info. You are correct about the site you mentioned, it is full of valuable information.

YouTube · Post by **xtian** » Sat Jan 17, 2015 7:36 pm

Sure, it's obvious that you're new at this stuff. But that's not a problem in itself. I was new at this stuff a few years ago, and asked plenty of similar questions. But there's no short answer! You have to learn how to bias a power section. You have to learn about the various PIs. About power string design, etc., etc.

So, there is no step-by-step guide to converting a Hammond power amp into a usable guitar power amp. But all the info you need to learn is here. You just need to start at the top:

http://ampgarage.com/forum/viewtopic.php?t=9023

Tubelube · Post by **Tubelube** » Sat Jan 17, 2015 11:03 pm

How about this design.

http://home.comcast.net/~seluckey/amps/ ... d_ao39.pdf

I am thinking I could build the (Hammond AO-39 conversion to modified Vox AC-15 Lite) and instal the preamp jack input just before the volume control and after the tone control cap array in the schematic. In this case I could just not use the preamp part of this build unless I wanted to plug into the front end and use this as a guitar amp instead of a power amp. In the link I provided there is a conversions to build the (Hammond AO-39 conversion to MARSHALL 18 WATT Lite) also which I feel doesn't appear to be as viable for a power amp. What is your advice xtian?

Tubelube · Post by **Tubelube** » Sat Jan 17, 2015 11:07 pm

I am working through the recommended following site at this time thanks for that! These are fun!
http://ampgarage.com/forum/viewtopic.php?t=9023

YouTube · Post by **xtian** » Sun Jan 18, 2015 2:17 am

Sure, that AC15 design is a good choice. The 2x EL84 power section is pretty standard, and as you say, you can plug a line-level input right where the volume control is, and use only the power section. Just make a passive FX loop at that point, and you're golden.

The 18-watt Lite amp's power section is basically the same:

http://mhuss.com/18watt/schematics/18wattLite2b.gif

sluckey · Post by **sluckey** » Sun Jan 18, 2015 4:38 am

off topic content removed

Structo · Post by **Structo** » Sun Jan 18, 2015 4:42 pm

@ Tubelube,

Please don't hijack other peoples threads for your amp problems.

Start a separate thread to address the problems you are experiencing.

The Amp Garage

Monkeymatic Hammond Stout

Thank You Xtian

Re: Monkeymatic Hammond Stout

Hammond AO-39 conversion to modified Vox AC-15 Lite

Fun stuff!

Re: Monkeymatic Hammond Stout

Re: Monkeymatic Hammond Stout

Re: Monkeymatic Hammond Stout