From stephen.delf–(at)– Wed Feb 21 18:17:35 CST 1996
Article: 10177 of alt.guitar.amps
From: stephen.delf–(at)– (Stephen Delft)
Newsgroups: alt.guitar.amps
Subject: Re: Hand Wire vs. PC Boar
Date: Sat, 17 Feb 1996 11:32:00 GMT
Message-ID: <960219040938431--(at)>
Organization: WELCOM BBS
Distribution: world
References: <4fdbkt$ra--(at)> <4f64ep$mp--(at) Lines: 50

(part of reply from Dr Distortion)
DD> A PCB-based amp that also uses rugged connectors and full-sized
chassis-mounted pots would probably be pretty reliable.

Certainly….Marshall used to make one – I haven’t seen much in print
about this version, but I used to work on them when I lived in London –
Mostly replacing worn-out input jacks and pots. They used regular
hard-wired pots and jacks, mounted on the chassis, and all the
connection wires from the PCB were anchored by each re-passing through a
second (larger) hole, next to the soldered connection. I believe they
lster shifted to a less expensive construction.

If anyone is interested, this method of stress-relief of flexible wires
soldered to a PCB costs nothing more than a bit more board space and a
second row of holes just large enough to clear the wire’s insulation.
On the evidence I have seen, it survived much vibration in use and
transport, and I never had any problems from the PCB’s or the leadout
wires. I certainly could *not* say the same about modern
ribbon-wiring, or about board-mounted pots and jacks – which seem to be
the most common causes of amp failure.

And perhaps I could add another one …board-mounted main fuses at
the rear of the chassis!
I have had problems with the PCB-mounted rear fuseholders on “reissue”
Fender ’93 Supers and Concerts. The fuse holder is held only by thin
solder tags at the rear and middle, and a small plastic stud at the
“outer” end of the barrel. If the plastic stud cracks, the next thing to
go is the mid-barrel solder tag, resulting in an intermittent or
completely dead amp.

If you relieve the front edge of the fuseholder PCB between the
mounting screw-posts (Dremel motor and coarse grinding point);
and file the chassis hole slightly larger and upwards (towards the open
face of the chassis), making the usual double-flatted-circle shape;
….it is just possible to install a regular 1 1/4 inch chassis-mounting
fuseholder and hard-wire it to the PCB. (Littelfuse recent safety-type,
w/small bayonet cap)

BTW….does anyone have a schematic for Fender 160PS tube PA amp

I am also looking for cheap, blown, old Fender Bassman, Acro, or
similar PP O/P transformers, around 20-50 watt, which still have their
original winding construction undisturbed. I am particularly interested
to see examples of early paper-interleaved transformers, and also the
Triad? early Bassman transformer referred to in Kendrick’s book as
having a more complex interleaving of windings than later models.

Regards to all,


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

1974 Vintage Fender Amp Handle Pro Deluxe Twin Showman Vibrolux Reverb Bassman

End Date: Sunday May-26-2019 16:39:26 PDT
Buy It Now for only: $15.00
Buy It Now |
Turret FR4 board printed Fender Tweed Bassman 5F6A layout DIY amp kits

End Date: Sunday May-26-2019 18:04:00 PDT
Buy It Now for only: $24.00
Buy It Now |
Original 1961 Fender Cream / White Amp Knob with flat head set screw Bassman

$24.99 (0 Bids)
End Date: Sunday May-26-2019 19:49:04 PDT
Bid now |
Original 1964 ELCO Fender Amplifier Tube Shield Super Twin Deluxe Pro Bassman

$9.99 (0 Bids)
End Date: Sunday May-26-2019 19:49:04 PDT
Bid now |
Tweed Bassman Two - Tone 5F6-A Guitar Amplifier Hand wired by Achillies Amps

End Date: Monday May-27-2019 1:34:55 PDT
Buy It Now for only: $2,627.20
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