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    The preamp board wired up. This is the original preamp board. The circuit was adding a simple reverb circuit that totally ruined the sound of the amp so later we bypassed and removed this part of the circuit. The third socket from the left and its associated circuitry were removed.

    The preamp board wired up. This is the original preamp board. The circuit was adding a simple reverb circuit that totally ruined the sound of the amp so later we bypassed and removed this part of the circuit. The third socket from the left and its associated circuitry were removed.

Supro Amplifiers Are Back

I was browsing doing some research today when I stumbled upon a site claiming that Supro Amplifiers are back under construction again! Those who lust after that huge sound on the first two Led Zeppelin albums and some of Jimi Hendrixes studio stuff will be delighted to know that yes indeed they ARE back! Based out of NYC under the Absara Audio name it appears as though they have a few of the more popular amplifiers back in construction. I am excited to find one now and have been looking around online to find a distributor. Then of course I decided instead to see if they have a website up yet and of course they do! They have a pretty decent website too. It lists a lot of distributors here in the states.

Please go check them out at:
http://suprousa.com/

They have a Facebook presence as well at:
https://www.facebook.com/suprousa

THE CHAMP CBA-20807 1000 Watt AMPLIFIER by John Chambers

THE CHAMP CBA-20807 1000 Watt AMPLIFIER

I found this article on Hack-A-Day website. Some of you may recall my 100 watt custom monster amp post but even it in all its awesome glory is super small potatoes to this creation!

Johns work is exquisite and simple in design with thoughtful approaches to a variety of aspect to his amp. We are all anxiously awaiting part 3 of Johns missive into his marvelous amplifier containing schemtaics, results, and notes.

Johns website has a host of other useful information and ideas as well as how to’s and other designs both by him and other third party amp companies. Be sure to follow Johns progress as he seems to be a serious and well aged contender in the tube amp market and certainly better versed and more experienced than I!

The 1000 all tube Beastial Amplifier!

The 1000 all tube Beastial Amplifier!

LM386 Altoids tin amp – Hack a Day

Hacker friend and cohort Dino Segovis is back again with the fifth installment in his “Hack a Week” series. This time around he has put together a 1/2 watt audio amplifier that would make for a great weekend project. He’s a big fan of the LM386 amplifier chip because it does so much in such a small package. Since it is so versatile, he used it as the centerpiece of his Altoids tin amplifier.

via LM386 Altoids tin amp – Hack a Day.

100 Watt Custom Amplifier!

Marshall DSL 2000 gutted and rebuilt into a fiery ground shaking monster of an amplifier by Doug of Duo.Glassix. This amp combines charachteristics and circuts of a couple different well known amps. The resulting sound is that of Neal Youngs amplifier meets Zakk Wyldes amp and when the master volume is unleashed does not just thump your chest but rips your heart out and stomps on it! It has been called the meanest sounding amplifier on the face of the planet! I constructed an A/B/Y footpedal to take advantage of the parallel interactive channels (why is this feature not utilized more often). When channel 1 turned up all the way you get this sweet natural amp distortion while channel 2 if turned up 2/3rds of the way yeilds a deliciously warm woody clean jazzy sound that is to die for! The volume difference between the 2 channels is perfect for hitting that stinging solo tone while backing off the guitars volume cleans it up very nicely indeed. Some one asked for the schematics so here ya go! Enjoy!

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From Marshall DSL 2000 ripped out by the guts!

This is the rectifier and power filtering circuitry.
It is pretty standard faire.
It uses a typical bridge rectifier with a 10H choke.
There are a pair of totem pole filters and a pair of Pi filters.
Also a negative bias supply circuit.
Also a 6.3 VAC heater circuit rated at 7 amps.

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From Marshall DSL 2000 ripped out by the guts!

This is the power amplifier and phase splitter.
The output stage includes a pair of parallel speaker jacks.
There is a 4,8,16 ohm impedance selector swith.
Also a line out jack to connect straight to the board.
The Presence knob attenuates the high end sizzle.
This is a long tailed pair phase splitter.
It drives this quad of EL34’s into fire-breat​hing mode!

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From Marshall DSL 2000 ripped out by the guts!

Here is where the magic is made.
This preamp has a pair of parallel triodes.
There is a bridge switch on the cathodes.
It induces interactiv​e vvolume controls on the channels.
Next is a cathode follower tone drive stage.
It and the tone stack are the same circuit used it a JTM45.
The master volume circuit is that of a typical JCM800 2203.
These two circuits together provide for some really amazing tones.

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Marshall DSL 2000 ripped out by the guts!

Marshall DSL 2000 gutted and turned into a firebreathing dragon!

Marshall DSL 2000 gutted and rebuilt into a fiery ground shaking monster of an amplifier by Doug of Duo.Glassix. This amp combines charachteristics and circuts of a couple different well known amps. The resulting sound is that of Neal Youngs amplifier meets Zakk Wyldes amp and when the master volume is unleashed does not just thump your chest but rips your heart out and stomps on it! It has been called the meanest sounding amplifier on the face of the planet! I constructed an A/B/Y footpedal to take advantage of the parallel interactive channels (why is this feature not utilized more often). When channel 1 turned up all the way you get this sweet natural amp distortion while channel 2 if turned up 2/3rds of the way yeilds a deliciously warm woody clean jazzy sound tat is to die for! The volume difference between the 2 channels is perfect for hitting that stinging solo tone while backing off the guitars volume cleans it up very nicely indeed.

 

Marshall DSL 2000 ripped out by the guts!

1959 Fender Tweed Deluxe 5E3 Build Gallery!

From 1959 Tweed Fender Deluxe 5E3

1959 Fender Tweed Deluxe 5E3 Head Clone I completed in February of 2008. Sounded Amazing. Created a custom A/B/Y footpedal for it and released the magic of interactive channels.

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