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Forums :: Ask Amp Tech Expert Skip Simmons

Kalamazoo Model Rebuild and Mods

2 replies [Last post]
Tue, 05/12/2026 - 08:07
Eric P
Eric P's picture
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Joined: 12/03/2024

Hi there!

I was lucky enough to get my hands in a 1966 Kalamazoo Model II this weekend.

It's currently with a local (Toronto) expert who will give it the full once -over (3-prong plug, death cap removal if present, the caps etc) and he will also add a line out so I an use it at jams and plug into the PA. 

 

He comes very highly recommended and he knows his stuff. But he's never worked on one of these. A local harp player sent him pics of his own model 1 with the same mods for reference (and it had been rebuilt by Greg Heuman himself!) so he has that as a reference. Plus, I also sent him this link I found :

http://www.rru.com/~meo/Guitar/Amps/Kalamazoo/Mods/

I was wondering, Skip ( or Greg?) if you had any recommendations that I could pass along to him about working on my new 60 year old amp? 

Thanks!

Eric

 

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Thu, 05/14/2026 - 08:58
#1
Expert Skip Simmons
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Joined: 01/18/2010
Hello Eric- Thanks for

Hello Eric- Thanks for writing. Well, those amps have been a harp favorite for years. Why? Because they sound pretty lousy for guitar due to low gain and a fairly dark tone- perfect for harp! I say all they need are new electrolytic caps and a better speaker. If you feel like a mod of some sort, I would suggest a beefier output transformer.
530-771-7345
www.skipsimmonsamps.com

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Mon, 05/18/2026 - 13:06
#2
Eric P
Eric P's picture
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Joined: 12/03/2024
Kalamazoo Model 2

Hey Skip,Thx for your note.I picked up the Amp yesterday with new capacitors, but the Tubes and speaker were good, so he left them as-is.I played it at at home and it sounds awesome! I will play it this way for a while to see how it goes before I make any other  mods. Thanks,Eric

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