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Seymour Duncan Convertible 100
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Seymour Duncan Convertible 100
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jonkaille jonkaille

« Surprising, infinite possibilities »

Published on 06/01/14 at 16:08
It is an all-tube amp, built little by copy Seymour Duncan in 1986.
according to some information gleaned from the net, it was Developed with the participation of Eddie Van Halen.
Joe Bonamassa is fan

The peculiarity is that it is modular preamp on the game: you can combine modules together for a sound rather typical Fender, Marshall, Vox, Mesa, and all the classic amps.
Or where it gets crazy, is that you can drastically change the grain of the amp, by configuring the preamp modules you want, and thus end up with a unique grain and different reactions depending on the set of modules selected.

Originally fitted with EL34, it is also possible to change the power tubes with 6L6 or 6550

there are fifteen different modules, most lamps, and other transistor:
Normal
Low-Cut Normal
Classic
Low-Cut Classic
Classic EQ
Hi-Gain
Hi-Gain 6dB +
Hi-Gain EQ
Hi-Gain Hybrid
Presence
Cascode
Solid State IC
Classic Distortion
FET
Hot Mod


SPECIFICATIONS:

Switch pentode / triode to go from 100 to 50w
We can of course withdraw for 2 EL34 down to 25w
attenuator can lower the output to 5 watts!
2 channels, each with an overdrive settings (gain), master, bass, middle, treble, reverb
spring reverb
Master volume on each channel.
adjustable reverb on each channel.
DI output for plugging in a table, a sound card ...
output for additional hp
slave output to drive another amp
Damping to control the Amount of control of HP

Electrovoice Force 12 HP 12 inch
Lamps Preamps 12AX7 (x7) and 12AU7
Power: 4 x EL34
Rectifier: 5U4GB
Adjustable loop effect
Spring Reverb
HP external output
Switch triode / pentode
fan
Weight: 28kg (weighed in the balances)

for power, you can remove and replace EL34 6L6 or 6550 redoing the bias


UTILIZATION

Usage is quite simple, you plug it sounds.
However, it is totally awesome sound, the shape its taste and image.
some modules allow very fine adjustments, very thorough, and sometimes even drastic (EQ modules)
The access to the modules is done without the amp up without tools: a hatch on top is provided for this purpose.

Easy to maintain, no component in the chassis, and standard stuff.
However, it will identify good connections on the PCB (take pictures ...)
The audio signal is 100% discrete components, and lamps.

Solid construction, the cab is very solid, the HP can collect no problem.
The modules are solid.

Some users have had some trouble with the media modules that can become a little loose over time. Easy to fix, just straighten with a small clip tabs modules supports.

the switch pentode / triode are super handy to switch 100w to 50, and must, integrated down to 100w (ou50) to 5w attenuator allows you to play at home without losing sound quality.
Obviously, in a group or on stage, he excels, the reserve power is sufficient.
On a 4x12, it&#39;s huge!

home and home studio, you can plug it directly into the table or card
you can even make use of tube preamp!



SOUNDS

He leaves without problem the whole range of British amps from the beginning, to the present (2014)
This is really stunning.
We can make it sound clear, crystalline, blues, early rock crunch, hard, metal ... this amp has almost no limit.
This is also pretty crazy that they do not have sold tons, so it is versatile.

It is also possible to change the power tubes EL34 with 6L6 or 6550, and suddenly, pushing further the approach and the sound of a fender or a high gain.

we can say we can make it sound like a fender (the reverb is not as good anyway!)
you can play JTM, JMP, JCM 800 with no problems and go further in the exploration of sound (and GAIN)

I already tested the low top, no worries, the HP cash without flinching.

Never out of breath, he always has the potato.

OVERALL OPINION

A very versatile amp and can adapt to the needs of the modern guitarist:
Built for home, for home studio Direct output, enough potatoes for group play or make large scenes (the Stade de France, you forget without additional cab or transplanting) attenuator
2 channels completely modular, the effects loop ... amazing modern features for an amp of 86.
One wonders why they have not sold crates? The price? ($ 2,000 at the time, it was 15,000 francs) Module prices? microphones is still easier to build! I know that there is a dark history of divorce Seymour Duncan pickups keeping her department, his wife would have inherited the amplification department and would have liquidated. And this great adventure modular amps ended.

An ultra versatile and fun to use amp, it does not tire test combinations.

Finally, there is a very good site well documented or there is a ton of information, and very interesting to build DIY party modules to test new combinations:

http://www.diyguitarist.com/GuitarAmps/Convert.htm
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