Friday, 26 October 2012

Emma ReezaFRATzitz RF1

Requested by a few people.  Horrible to do a layout for because of multiple cascading stages with close connections from a 14 pin IC which means you can quickly run out of space, but managed to work my way through it eventually.  At 22 columns wide it will just fit in a 1590B if you file the sides down (or use a bench grinder like me), but would be more comfortable and with more room for wiring with a 125B.  Turn it 90 degrees though and it would probably fit more comfortably in the 1590B, even with 22 columns to accomodate vertically,   This has a built in buffered bypass and so only needs a SPDT stomp, or DPDT if you want to include LED indication. If you would prefer to use a 3PDT stomp and conventional true bypass switching, then the Stomp 4 connection becomes the output, you can omit the Stomp 6 connection completely, and also ignore the 2.5mm pitch 150n and 470K at the top right hand side.

Info about the Emma original:

A unique type of  OD/dist. pedal that was designed to emulate as faithfully as possible the distortion characteristics of a real tube amp.

With the inclusion of a bias control the user is allowed to adjust the inner workings of the amplifier from class B ( far left) to class A ( far right) and anywhere in between, altering the harmonic structure of the signal and providing a much wider  variety of tonal options than your standard OD/ dist. pedal.

Additional controls for Level, Gain,and a Hi Cut/ Hi Boost tone circuit allow the user to fine tune the Reezafratzitz to taste.







BOM:

Resistors 120R
1
Resistors 10K
4
Resistors 22K
4
Resistors 27K
1
Resistors 100K
6
Resistors 150K
2
Resistors 470K
6
Resistors 1M
4
Capacitors 47p
5
Capacitors 100p
2
Capacitors 1n
2
Capacitors 6n8
4
Capacitors 47n
2
Capacitors 150n
4
Capacitors 100u
3
IC CD4069
1
Transistors BC549
1



Modified version with additional Bass and Mids controls





BOM:

Capacitors 47p 5
Capacitors 100p 2
Capacitors 1n 2
Capacitors 2n2 1
Capacitors 6n8 4
Capacitors 47n 2
Capacitors 150n 4
Capacitors 100u 3
Resistors 100K 4
Resistors 10K 6
Resistors 120R 1
Resistors 150K 2
Resistors 1M 4
Resistors 22K 4
Resistors 27K 1
Resistors 470K 6
Resistors 47K 2
IC CD4069 1
Transistors Q1 1

Wednesday, 24 October 2012

MXR M-173 Classic 108 Fuzz

Only ever heard good things about this one, so it had to be added to the collection.  Not very good timing though as Vince has just bought one! :o)  I have done the main fuzz and buffer circuit separately so those who just want to build the fuzz can do so.  If you do want to include the buffer put it in a true bypass loop with a toggle before the fuzz circuit so you can bypass the buffer if you want to.

Guitarists of all styles will dig the familiar late-Sixties/ early-Seventies crunch delivered by the new MXR Classic 108 Fuzz. We've taken the guts of our BC-108 loaded Fuzz Face, placed them in a more pedal-board friendly shape, and added the modern conveniences of a battery door, optional AC operation, and true bypass with LED. The Buffer switch eliminates the audible oscillation caused when some wah-wahs are placed in front of a Fuzz Face. The Classic 108 Fuzz comes in a heavy-duty Phase 100-sized box with a sweet hammertone turquoise finish.







And here is the buffer for people who want to build the whole thing.



Tuesday, 23 October 2012

Death By Audio - Soundwave Breakdown

One for the Fuzzynoise-ophiles.  Description of the original:

The Soundwave Breakdown takes the idea of a screaming fuzz pedal and turns it inside out. It uses specially matched transistors turned backwards to get it's bombastic sound. The one knob controls extreme biasing of one of the transistors and the other controls intense filtering. Although this sounds simple the results are perplexing. The combination of allow a vast universe of fuzz | distortion | overdive | buzz | grind | bleeps | synth sounds | harmonies | and soundwave manipulation. The exact positions of the knobs yield completely different sounds for endless great insane fuzz tones.

Video of the 2 knob version, this layout for the 3 knob version with additional volume control.





Sunday, 21 October 2012

Rocktron Austin Gold

On hold until we can get the schematic checked out.

Considered by some as "The Poor Mans Klon" (almost certainly because of the colour and form, they were obviously expecting a rip off), this is another effect which may not be the most fashionable, but sounds great to me.  And you never know, if someone puts the effort in it may be a good base to start from for the next "big thing" if people can ignore Tubescreamer or Big Muff clones for a while! :o)

Buffer into gain stage into buffer means that at least circuit-wise it's nothing like a Klon, but definitely worth a build.

Info about the original:

It dishes out a superb blend of light overdrives that enhance, without changing, the sound of your amp. A unique "Pre-Bass control eliminates problems with too much fuzzy bass, or the opposite problem of being a weak, thin-sounding overdrive. Drive and level controls offer further shaping options. It's like having an entire arsenal of overdrive pedals in just one box. Add an entirely new dimension to your amp with a maximum 30dB of gain without overprocessing.

Features

    Light overdrives that enhance, without changing, the sound of your amp
    Unique "Pre-Bass control eliminates fuzzy bass and weak, thin-sounding overdrive
    Drive and level controls
    30dB of gain without overprocessing







Thursday, 18 October 2012

Wampler Paisley Drive

Another excellent pedal by Wampler, and Brad Paisley's signature overdrive.  Info about the original:

Since late 2009, we discovered that Brad Paisley was using Wampler Pedals. He started with the AnalogEcho, then got an Ego Compressor and then had the Underdog overdrive.

Everything was great until his tech at the time, Chad, mentioned to Brian that Brad still was not quite settled on the overdrive sound he was getting from his live rig… could Wampler maybe look at making a pedal …??

Brads requirements were quite “simple”… it needs to be clean but get crunchy with some “beef” to it. It needs to have a fluid tone when soloing. I needs to add a little hair to the tone but then but then has to be able to give flat out ball busting gain, oh… but please do not wreck the tonality. It needs to have everything, in a pedal format, but do not make it sound like a pedal...!

Over a period of months, Brian made some circuits and sent them off, there were a couple of “tweaks” here and there to be made and then finally, when official “proto #2” landed it went straight into the live rack and out on the H20 world tour.

That prototype has now been made into the Brad Paisley signature “Paisley Drive” and goes with Brad wherever he goes. When you see Brad live, or performing live on the TV, and you are blown away by his overdriven tone, it’s the Paisley Drive.

The truly great thing about this pedal is that it’s not only Telecaster style guitars that it works so well with, it brings the best out of your Strat or anything you may have loaded with humbuckers. You no longer need to have individual pedals for your guitars; the Paisley Drive will make each one sing.

The inbuilt tonal controls, the presence and mid contour switches, will make this pedal the single most versatile and complete overdrive pedal you have ever owned. In fact, we believe it might be the last one you ever buy...

Brad Paisley:-
“...we actually recorded this (pedal) in the studio, you know, trying it out. I turned up a Trainwreck Amp that I've got and compared the sound of the distortion and it was very, very similar. And that's a very good test because any time a pedal can mimic a great overdriven amp then you're on to something...”








And the bill of materials:

Group Name Qty
Capacitors 51p 1
Capacitors 100p 1
Capacitors 22n 1
Capacitors 220n 3
Capacitors 470n 1
Capacitors 1u 4
Capacitors 220u 2
Resistors 100R 3
Resistors 200R 1
Resistors 220R 1
Resistors 240R 1
Resistors 300R 1
Resistors 1K 4
Resistors 2K2 1
Resistors 10K 8
Resistors 511K 2
Resistors 1M 1
IC JRC4580 1
Transistors J201 2
Diodes 1N4148 2