Kalamazoo Amp Field Guide: Reverb 12 Photos

Kalamazoo Amp Field Guide: Reverb 12

Photos

[ Technical Overview ] [ Schematic ] [ Photos ] [ Modifications ]

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

NOTE: All but the bottom photo with the detail of the guts are courtesy of Antonio Salvatore. Click on any photo to see a JPEG twice as large (guts photo is much larger, nearly 1MB and larger than 1200x900). The amp in Antonio's photos has a replacement speaker.
Basic frontal shot

Logo and control closeup. Note on-off switch on treble control
Control layout: loudness, treble/on/off, bass, frequency and depth (tremolo), and reverb (depth)

Back of amp (upper and lower panels held on with screws)
Closeup of back of amp: AC receptacle, 8 ohm ext. spkr out jack, phono/tape input jack

Tubes, transformers, etc.
Speaker (non-original) and reverb tank

Partial view of amp electronics
All Kalamazoo tube amps were shipped with a schematic attached inside the cabinet

My Reverb 12, with the chassis hanging out the back. I kind of blew this shot, but you can see most of the circuit. V1 (upper right) handles first gain stage and tremolo oscillator, V2 (left of that) handles second gain stage and phase inverter, V3 (way left by power supply) handles reverb driver and recovery. Power tubes are lower right. Lots of "chocolate drop" caps and a regular snake pit of wiring. Lots of shielded wire, though. Notice the nearly unused terminal strip. They didn't exactly follow the color code, either. The white connector above the lower PS cap is for the reverb recovery cable; the send comes straight off the driver tranny under the hole to the right of V3. The small, brown, 4 pin socket just to the left of the power tube sockets is for the footswitch cable. In this photo I've already replaced the rectifier diodes with 1n1007s, and the one blue electrolytic on the far right.

[ Technical Overview ] [ Schematic ] [ Photos ] [ Modifications ]
Last updated: 14 September 2005
Copyright 2000 Miles O'Neal, Austin, TX. All rights reserved. Amp photo courtesy of Antonio Salvatore .
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

NOTE: All but the bottom photo with the detail of the guts are courtesy of Antonio Salvatore. Click on any photo to see a JPEG twice as large (guts photo is much larger, nearly 1MB and larger than 1200x900). The amp in Antonio's photos has a replacement speaker.	Basic frontal shot
Logo and control closeup. Note on-off switch on treble control	Control layout: loudness, treble/on/off, bass, frequency and depth (tremolo), and reverb (depth)
Back of amp (upper and lower panels held on with screws)	Closeup of back of amp: AC receptacle, 8 ohm ext. spkr out jack, phono/tape input jack
Tubes, transformers, etc.	Speaker (non-original) and reverb tank
Partial view of amp electronics	All Kalamazoo tube amps were shipped with a schematic attached inside the cabinet
My Reverb 12, with the chassis hanging out the back. I kind of blew this shot, but you can see most of the circuit. V1 (upper right) handles first gain stage and tremolo oscillator, V2 (left of that) handles second gain stage and phase inverter, V3 (way left by power supply) handles reverb driver and recovery. Power tubes are lower right. Lots of "chocolate drop" caps and a regular snake pit of wiring. Lots of shielded wire, though. Notice the nearly unused terminal strip. They didn't exactly follow the color code, either. The white connector above the lower PS cap is for the reverb recovery cable; the send comes straight off the driver tranny under the hole to the right of V3. The small, brown, 4 pin socket just to the left of the power tube sockets is for the footswitch cable. In this photo I've already replaced the rectifier diodes with 1n1007s, and the one blue electrolytic on the far right.