FOXGEAR GURUS DOPPOLER User manual
DOPPOLER
USER’S MANUAL
Terms of Warranty
Gurus product warranty covers 2 years from date of purchase with the exception of moving mechanical parts such as foot
switches, speakers and handles which have a 1 year warranty. The valves, lights and cables are guaranteed for 3 months from
the date of purchase.!
The warranty does not cover damage caused by accident, misuse and / or neglect, failure to comply with the instruction
manual, repair and attempted repair by personnel not authorized by Gurus Amps, any damage caused during transport and
delivery, (claims must be presented to the carrier); damage to any product that has been altered or on which it has been
removed, defaced or altered serial number; damage caused by faulty connections or connections to equipment failures and/or
defective power cables.!
Responsibility of Gurus Amps for any defective product is limited to repair or replacement of the product at our discretion.!
The Gurus Amps not be liable for damages resulting from loss of use of the product, lost time operation interrupted by non-
use of the product, loss of business or any other damages or incidental, consequential or otherwise; damage in transit or
damage caused by inadequate packaging or of poor quality.
Assistance: Please contact us for information on how, where and when to ship the product after the return has been
Authorized by Gurus . The repaired goods should be packed carefully and we recommend not include any accessories such as
cables, effects, manuals, etc. ..!
Please attach a copy of the original receipt of purchase (invoice or receipt) together with a problem description and your
personal data.!
THE WARRANTY IS NOT VALID 'WITHOUT A COPY OF YOUR RECEIPT OF SALE CERTIFYING THAT THE DATE OF
PURCHASE.!
!
The costs of labor and material guarantee shall be borne by Gurus Amps.!
!
PACKING AND SHIPPING COSTS ARE ALWAYS WITH YOU
Foxgear LLC™ reserves the right to change technical features or look of his products in any
moment without notice. This product is pursuant to European Directives 89/336EEC
Inspired by the old-yet-innovative rotary speaker systems, like the old
Maestro Revolver, Leslie, and mostly the “Doppolas rotary speaker” made
by Mr. Gilmour & Mr. Taylor, with the DOPPOLER, we wanted to make a
pedal that really reproduce the rotary effect in a physical way, just missing
the mechanical parts."
in fact, the Doppoler is NOT a “rotary simulator” but the brain of a system
that in his best setting is made of two cabinets, positioned at 180° from
each other, to let the Doppoler handle it reproducing what happened to
signal when the speaker is rotating."
We paid a lot of attention, measurement, tests, to exactly understand and
reproduce what happens to the signal coming to our ears with a rotary
speaker. This meant to apply eq filters, phase changing, volume changing,
and calculate how reflections reacts and affect all of this.. Indeed, the
signal coming out from Front and Rear speaker are quite different from
each other, cause they are already made to do their job in the correct
position."
Speed sets the speed of rotary effect, and can also be set by the TAP
tempo footswitch."
Level sets the level of rotary effect and the ambient."
The result, is an outstanding tridimensional sounds that will force you to
keep it always ON, even with low speed and intensity without notice the
rotary effect, just adding ambient and 3D to your sound. A very transparent
Tube preamp make your sound great respecting your instrument, and you
can easily add an overdrive pedal in front of it like our Sexydrive mkII with
his blend option, to add beautiful drive to your Organ sound."
What we keep in mind designing the DOPPOLER is the ambient and 3D
sound, people asked me to do some kind of “leslie simulator” for years,
and i’ve always replied that i don’t want to make a simulator of an
instrument where the acoustic component of the sound was so important.
So we started designing it from the acoustic point, wanting to keep it intact
and the base of our system, then we designed our circuit to reproduce
what happens between the cabinet and our ears. So far from a simple
tremolo/rotating simulator."
You can easily use it in your pedalboard in front of your amp, and easily
add just an additional speaker behind your main speaker.. maybe an active
cabinet, a combo amp, or using one of our Miniamp to drive a guitar
Speaker.
INTRODUCTION:
Power In 12VDC (negative TIP)
Consumption at 12V max 300mA
Input Impedance <=1M Ohm
Output Front Impedance <=10K Ohm
Output Rear Impedance <=10K Ohm
S/N ratio <90db
Distortion max 2%THD
Estimated tube Life Up to 5000Hrs.
Larghezza (Width) 220mm. (8,6”)
Lunghezza (Lenght) 130mm. (5,1”)
Altezza (Height) 50mm. (2”)
Peso (Weight) 0,7Kg. (1,5lbs)
TECH SPECS.
CONNECTIONS:
Guitar Amplifier
Guitar Amp + active cab behind, combo or any another Guitar Amp
