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THE USA “BASS” BIG MUFF π - VERSION 11
2008 to present
Designer: John Pisani, E-H senior engineer (based on the original Bob Myer circuit)
PCB Numbers: EC-D40, EC-D40 Rev A
True Bypass: Yes
Power: Current draw 7 mA. 9V battery or AC (9.6vdc/200mA) power jack with negative tip polarity. Uses standard Boss type adaptors.
Packaging: Corrugated cardboard box
Place of Manufacture: Assembled in Long Island City, New York, USA
For years bass players have been using Russian Big Muffs because of thier huge bottom end, but a low gain distortion that handles deep bass notes well. The Bass Big Muff, tailored specifically for the bass by E-H senior engineer John Pisani, was added to the E-H "XO" line in 2008. The literature from E-H states that the BBM was based on the legendary green Russian Big Muffs and the original 1970s Big Muffs. It works very well with guitar or bass and is very similar to the Russian made Sovtek Big Muff sound, with some added tone controls. Since the Russian Big Muffs are no longer available this is the best match for that tone. It is a warmer sounding Muff with less sustain than the other USA Big Muffs.
John Pisani started with E-H in April of 2000. He has worked on various pedals as senior engineer, including the Holy Grail, Memory Boy, Memory Toy, Deluxe Memory Boy and 22 Caliber. The BBM was his first Big Muff engineering project, and this one took approximately eight months to develop and test. Here is what John had to say about the development of the BBM:
"We were very aware that many musicians used the Big Muff Pi on bass, especially the Russian Muffs. The direction we decided to take was to find out what bass players thought of the Big Muff, why was it good and what were its deficiencies when used with bass. After identifying some common problems with a Big Muff on bass and also knowing what people liked we went to work on creating the bass version. The first step was to find a great sounding Russian Muff, we used a black one (Editor's note - the circuit of the Black Russian Muff is almost idetical to the green Russian Muff that the E-H literature states this is based on, with just a few component changes). Once we had the Russian Big Muff the majority of the work spent on the BBM was to make a couple prototypes sound and work just like the Russian model. The idea behind the prototypes was, can make a mass manufacturable Big Muff sound like a Russian one, using components that are readily available to us.
We took a Little Big Muff board and used it as a prototype board for the Bass Big Muff. The advantage to using the Little Big Muff as a starting place, knowing the BBM would go in the same sized enclosure, was that we could prove we could make the Little Big Muff sound like a Russian Muff. Of course by the time it was sounding like a Russian Muff it was nowhere near the same pedal as the Little Big Muff we started with. This prototype BBM had numerous switches and controls on it so that we could ask people if they preferred one tone stack over another, one kind of bass boost over another or a dry volume preference. We ended up tweaking the tone stack a little bit so it is not exactly the same tone stack as in a Russian Big Muff but we also think the tone stack works better for bass than the stock Russian tone stack. There were a few different versions of the bass boost circuit as well.
I would not consider myself a bass player though I own a couple basses and have played bass in at least one band when I was younger. I have also recorded bass lines on my own songs. We have a couple bass players that work at EHX so they provided much of the feedback as the Bass Big Muff was being developed. We probably went through close to 10 bass boost circuits before deciding on the one that would be part of the production circuit. 95% of the testing was done with bass and bass amps. It was designed strictly for bass players. It's nice to hear guitar players like it too though. It seems like many people like to mix their dry signal in with the distortion."
ENCLOSURE AND GRAPHICS - The box is all die cast, with a raw, tumbled surface finish.Same ITC Pioneer Big Muff font as on previous USA MUffs. The green color is intentionally reminiscent of the old green Russian Big Muffs. Four screws on the bottom plate and four rubber pads. Plate must be removed to change the battery. A red LED light shows when the circuit is on.
CONTROLS / KNOBS - Standard three Big Muff controls - volume, tone, and sustain. The frequencies of the tone sweep are slightly different than the Russian Big Muff since this was tailored for a bass. It includes a three position toggle switch - BASS BOOST, NORM, and DRY. Dry mixes your dry signal with the BBM's distortion. When the BBM is set to DRY the volume pot sets the volume of the distortion signal but has no effect on the volume of the DRY signal, which remains at unity gain at all times. Bass boost is like it sounds - boosts the bass frequency. Normal setting is similar to a stock Black Russian Big Muff. The control knobs are the small black plastic hockey puck type, the same used on the Little Big Muff and Bass Big Muff.
CIRCUIT - Based on the Russian Big Muff and 1970s Big Muff circuits. Circuit board is populated with micro sized SMD, or "surface mounted" components. Transistors are BC547C, same as the last black Russian Big Muffs. The circuit is true bypass. Includes both direct (effect on) and dry output (true bypass) jacks.
THE SOUND - This was based on the Russian Big Muff circuit. Not identical in tone to the Russians, but in most settings they are very similar. This version has less gain, a fatter bottom end, and brighter mids than the USA Big Muffs, the V9, V10, and V12. All toggle switch settings - bass boost, norm, and dry - sound very good with a bass guitar. For guitar, the normal setting sounds best, and is very close to the black V8 Russian Big Muff tone, though this version is less noisy at full sustain.
Конечно тут общая информация о конструкции и особеннностях, но может прольется какой-то свет... Я сам ищу схему этого басового бигмаффа - пока безрезультатно. (((
... и добавил:
так же во вложении - подробное расписалово каждой части схемы. тоже может чем поможет...
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