Dating Speakers

From tremolu–(at)– Fri Jul 8 17:16:19 CDT 1994
From: tremolu–(at)– (Tremolux)
Subject: Re: Deluxe Reverb and Jenson speaker Q
Date: 8 Jul 1994 03:47:02 -0400
Sender: new–(at)–

In article <2vheq8$hd--(at)>, dp–(at)– (David P. Mottaz) writes:

Look for date codes on the parts inside. If yours is a blackface, does it
say “Fender Electric” or “Fender Musical Instruments”? Fender Electric is
pre-CBS which means 63 through early 65. The Jensen is date coded. Look
for numbers around the edge of the speaker. You’ll see 220XYY, where 220
means Jensen, X means the year of manufactuer and YY means the week of the
year. Consequently, 220718 would mean the eighteenth week of 1967, or
1957. If there is no 220, it is not a Jensen, but probably an Oxford.


Buy the Book!

I cleaned up my tab for Sonny Boy's Help Me and made it into a short book. There's a Kindle version for 99 cents, and if you buy the paperback you get the Kindle free.

Playing "Help-Me" In the Style of Sonny Boy Williamson II: A step by step, note for note analysis of some of Sonny Boy's Signature Riffs

I also write Science Fiction, so you can sample some of my best stories. Also available in Kindle format.

Error Message Eyes: A Programmer's Guide to the Digital Soul


End Date: Friday Mar-22-2019 11:41:43 PDT
Buy It Now for only: $1,245.00
Buy It Now |
Vintage Guitar 1448 Silvertone Electric Guitar & Tube Amp Case USA

End Date: Friday Mar-22-2019 11:44:17 PDT
Buy It Now for only: $799.99
Buy It Now |
Vintage 1950 Danelectro Made Silvertone 1344 MONSTER TONE!Guitar Tube Amp, MINT+

End Date: Friday Mar-22-2019 13:07:54 PDT
Buy It Now for only: $595.00
Buy It Now |
Silvertone 1481 vintage tube amp. 5w, good condition. Free shipping

End Date: Friday Mar-22-2019 14:00:01 PDT
Buy It Now for only: $325.00
Buy It Now |
Silvertone 1457 Amp in Case '64 Free Shipping

End Date: Friday Mar-22-2019 17:34:57 PDT
Buy It Now for only: $1,848.00
Buy It Now |


The JT30 Page Popular links

I began collecting data about the microphones used by blue harp players before there was an internet. I began organizing it into in the late 1990s. I accumulated more stuff than I remember. This is some of it.

Street Theory

A Harp Player’s Guide to Music Theory

Learning Harp

Picking Up Blues Harp

A guide to learning to play Blues Harp

Microphone Information

Usenet Articles

Harp Amps

I've been collecting Harp Amps for a while. This is the old website. There is lots of information here. Here a coupld of links.

Harp Tab

A collection of songs and riffs that I’ve worked out over the years, plus some libraries of stuff I’ve converted to tablature. I’ve included most of the notes and instructions that helped me when I was learning to play blues harmonica.

Basic Riffs Simple harp tabs for songs Blues riffs and phrases.

Harp-L Archives 1992 to 2002


Harp Frequently Asked Questions