Blues Jr point to point mod
The new Torres
Engineering Blues Jr. Point to point rebuild DOWNLOAD
Everyone, all over the
world, has been asking for a real high quality rebuild for this
convenient little amp.
he Fender Blues Jr. is
a nice size and useful power range, a great platform to make a cool
high performance amp at a great price.
Our new point to point
super clean layout mod is built on a vintage style terminal board for
true point to point performance.
Parts are the best
possible, audiophile capacitors, carbon comp resistors, switchcraft
jacks (no more plastic junk) and NOS tube sockets.
The Blues Jr. stock
circuit is sort of a "crippled boogie" with an extra gain stage built
in but not used very well, a solid state reverb (yechh!) and
"economical" parts throughout. The circuit is somewhat "boxy" and
constrained to many musicians ears too.
Our new circuit adds an
extra preamp tube plus a fantastic sounding tube driven reverb. The amp takes
advantage of the extra gain stage and has
a complete redesign of the fat switch for DOUBLE the boost on the
footswitch, a new "ultra frequency" phase inverter for far more tonal
range, a new Torres
Dual Stage Master
(much better then the primitive master used) and an all new tone
circuit for a bigger, more open tone - a classic Fender tone with lots
more "guts" (based
on the "Brown Fender" early Pre CBS amp tone circuit with a tapped
Also included are push pull midrange boost and
push pull gain boost controls
and A TORRES
CUSTOM DESIGN WEBER COPPER CAP CHASSIS MOUNT TUBE RECTIFIER. The power tubes are changed
over to Class A cathode bias for tons of sustain and warmth.
The Preamp tubes are put
on "DC filaments" the quietest high tech way to run the tubes. Noise
floor is so low you can not tell the amp is on.
The power supply has
much larger filter caps (and more of them) and a choke/inductor is
added in place of the less effective resistor.
This is a completely new
amp with tonal character to match and beat the best boutique amps and
even blow away classic super expensive pre CBS Fenders.
This amp is very famous nation-wide and world wide for tone, punch and
performance. One of the best amps there is.
It has tone for everyone
- fantastic clean tones, full and rich, with big bottom end and sweet
highs, fantastic blues tone, singing and with slight breakup, rock-on
rock tone with big bad crunch and monster sustain - and beyond with all
the gain boosts engaged - tons of drive!!
The doubled up fat
switch gives you a great
rhythm to lead boost
still footswichable like the original
The improved hardware gets rid of the undependable
on input and speaker! (we have actually seen blues jr's come in for
repair that had the speaker jacks fail - wow, is that dangerous for
The added preamp tube is
a 5751 for the Classic modern sweet tone but all tube sockets are wired
to take any preamp tube. 12AX7, 12AT7, 12AY7, 12AU7, 5751, 7025, 12AV7,
12AZ7 etc. anything you want to experiment with.
The EL84 power tubes are
wired as Class
A cathode bias -
some call it automatic bias -
Cathode bias has really incredible sustain and slight compression for a
much more musical amp. it also does "set itself" to a degree making
bias adjustment not as much of a concern as the stock amp.
Plate voltage is
actually INCREASED in the amp with some very tricky "secret transformer
All controls remain the
same and the front panel layout is exactly the same. It uses your
The Copper Cap rectifier
tube also adds compression and sustain and is a high tech add on for
the amp circuit providing really great performance and endless life.
kit below includes all the parts, layout and instructions to
Blues Jr. all new pots, tube sockets, power supply, point to
circuit board, capacitors, carbon comp resistors, jacks and hardware.
You use your existing on-off switch, TUBES and transformers.
an all new reverb
transformer and reverb tank
for incredible reverb tone
Overall one of our best rebuild
designs ever. check it out. This is a high-skill level mod.
you should have good experience building and working on tube amps and
have very good assembly, electronic and soldering skills. Not a beginner project.
This kit is a little bit tough to do. follow the drawings
very accurately or it will not come out.
requires drilling and
installing quite a bit of hardware.
this is the kit and download
version of our
in-shop modification .
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final notes on web page
Legendary Book "Inside Tube Amps" is now available on Amazon/Kindle
just search for "Inside Tube
amps" on Amazon and select "On Kindle" from the drop down box.
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I am retired due to illness,
in business 35 years