Kalamazoo Amp Field Guide: Model Two

Kalamazoo Amp Field Guide: Model Two

Technical Overview

[ Technical Overview ] [ Schematic ] [ Bill Of Materials ] [ Photos ] [ Modifications ]

For more information on the Kalamazoo line, see the Kalamazoo web pages at http://www.rru.com/~meo/Guitar/Amps/Kalamazoo/ .
Vital Statistics

Model: Two
Year manufactured: 1966?
Controls:

Volume
Tremolo Frequency (with on/off switch)
Tone (with on/off switch)
Two inputs, one channel

Tubes:

6X4 full wave rectifier
12AX7/ECC83/7025 (dual triode) preamp
6BQ5/EL84 output tube
12AX7/ECC83/7025 (dual triode) tremolo oscillator

Output Transformer:

Woodward-Schumacher TF500-0-606-528, 4K input, 8 ohm output

Speaker:

one CTS 10", 8 ohms (amp's serial number sticker is on magnet assembly)

Miscellaneous:

schematic and tube layout chart pasted inside amp

Links
Paul Harker has a very nice page documenting his rebuild of a Model Two (including some good work on repairing the cabinet) at http://paulspage.home.comcast.net/harmonica/kalamazoo_model_2.htm.
Andy Hardy (who provided the annotated chassis photo on the photos page, has a Model Two website which includes photos and sound clips of the hum you get with bad power supply caps as well as clean and dirty harp tones through a Model Two, at http://members.aol.com/andyhardy/index.htm. Andy's page includes a photo of one of my favorite ways to mount replacement PS caps.

[ Technical Overview ] [ Schematic ] [ Bill Of Materials ] [ Photos ] [ Modifications ]
Last updated: 07 January 2018
Copyright 1999, 2004 Miles O'Neal, Austin, TX. All rights reserved. Amp photo courtesy of Nick Schepis .
Miles O'Neal <roadkills.r.us@XYZZY.gmail.com> [remove the "XYZZY." to make things work!] c/o RNN / 1705 Oak Forest Dr / Round Rock, TX / 78681-1514