History
1988 Keene, NH
One day at my shop I was asked what would I build
for an amp, and I siad
that I'd incorporate features from my favorite amp
and call it the Warbler.
1989 Woodstock, NY
On a trip to S. Carolina I designed the first
Warbler and built it up a month later.
The amp exceeded my egocentric expectations and
ended my quest for the perfect amp.
1992 - 1993 Orlando, FL
Found a source of varistors and began formulating
an amp strategy.
Diverted to Microphone development project.
1994 -1996 Troy, NH
Began building prototypes and custom amps for
guitar which
embodied elements from the 5 major amp companies in
the USA,
that changed how popular music was expressed and
experienced.
1997
Standardized a production amp the Warbler / Juke
1210
1998
Set up a website to sell direct to musicians as
Juke Amplification.
Added the Juke 810 harp amp and the Juke 112 &
210 models.
2009
Introduced three new models with very different
tonalities: the Coda, Vamp and Rave,
new graphics and changed the name Juke series to
Warbler.
AMPS
1989-2000
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- G.
R. Croteau
- Graduate:
NH Technical Institute- Electronic
Engineering
- Concord,
NH 1966
Institute of Audio Research- Recording
Engineering
- New
York, NY 1973
Amps:
Tube audio hobbyist 1958-66- Tube
electronic repairs since
1966
- Specializing
in Musical Electronics
- Service
and Repair since 1974
- Vintage
Restorations since 1988
- Building
Amps since 1989
Musician:
Trombone 1956-62- Harmonica
1962-Present
- Vocalist
1958-Present
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Amps
which influenced the Warbler Design
Ampeg
Reverborocket R-12-R
Fender
5E4 Super Amp, Princeton Reverb and Vibro Champ
Gibson
Tweed Falcon and GA-30RVT
Magnatone
Troubadour 213-A, Custom 260 and MP13-A
Valco
Several Supro, Gretsch, Harmony and Airline
models
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Trivia
warbler
(wôr' blõr) n. music. a singer; one
that warbles; to sing with
trills, quavers, or melodic embellishments
muse
(myáz) n. a source of inspiration;
guiding spirit
juke
(ják) Southeastern U.S. n.
musical happening; a roadhouse
with music for dancing. intr.v. To dance,
especially
in a roadhouse or to the music of a
jukebox.
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Miscellaneous Amp Info
Ceramic Bulk Varistors
(Rod VDR's voltage-dependent-resistors)
Fired-ceramic components consisting of silicon
carbide selected and processed
for special electrical properties, and dispersed in
a ceramic matrix.
Equivalent circuit is a R-C network. Specs to 10%
tolorence are generally considered symmetrical
in electrical characteristics, having a maximum
non-symmetry of 1%.
Varistors can
not be measured by a ohmmeters or bridge resistance
circuits, because they are voltage sensitive.
Specifications are derived from a calibration
circuit or characteristic curves.
All Magnatone varistors fit one set of specs. The
Manufacture list 23 rod types in 3 wattages
and only one matches the specs for the type found
in Magnatone amps
The company that has produced this type of
varistors for 60+ years,
had no knowledge of them being used in an audio
application.
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