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MAIL-ORDER REPAIR
AND REBUILDING SERVICE
(Mail-Order Amplifier Repair &
Rebuilding Service Available Worldwide)
Dave Vumback
rebuilding a B-3
If your equipment needs
repair, or tender-loving-care…..
For over 50 years, GOFF Professional
has provided complete repair, rebuilding and
modification services for HAMMOND Organ tonewheel
generator models used for touring, studio or
private use. Our custom organs and Leslie’s
currently tour with many of the largest
professional musicians in Rock, Blues, Jazz,
Gospel, Country and other music disciplines. In
addition, we can provide new HAMMOND and Leslie
equipment, backed by Factory Authorized Service,
as we are an Authorized HAMMOND-Suzuki Dealer. As
a family business, we have always offered
personal service to our customers, as YOU are
the most important part of our work!
We offer Mail-Order Repair and
Rebuilding for most vintage HAMMOND and Leslie
products. We also will do our very best to assist
you in securing repairs to your new
HAMMOND-Suzuki equipment regardless of
where purchased.
A listing of our most-requested
services includes:
- Leslie Amplifiers
- HAMMOND Organ
Preamplifiers / Amplifiers
- HAMMOND Organ Vibrato
Scanners
- HAMMOND Vibrato Line
Boxes
- HAMMOND Tonewheel
Generators
- HAMMOND Organ
Rebuilding / Modification to GOFF Professional
Touring Specifications
- Leslie Speaker
Rebuilding / Modification to
GOFF Professional Touring
Specifications
Leslie
Amplifier Repair & Rebuilding
Rebuilt Leslie
Amp Pictured with Tubes (Not included)
Rebuilt
Original Tube Amplifier Interior Pictured
(Typical older tube amplifier chassis)
Summary of
Preamp and Amplifier
Repair & Rebuilding Service
- Complete “Dealer-Quality”
Amplifier Rebuild Performed
- All Capacitors Replaced,
Resistors and other components checked
for accuracy, replaced as necessary,
volume control checked and cleaned
- New Tremolo Relay
Installed
- Power Supply Rebuilt /
Upgraded
- Transformers checked for
performance, new transformers available
- New Leslie connector and
retainer installed if needed
- All Repaired / Rebuilt
Preamplifiers and Amplifiers Covered by
our 30 Day Warranty which covers all parts
we replaced and labor, shipping excluded.
- Expedited Service
available – for most U.S. locations, we
normally ship UPS Ground, but 2nd Day and
FEDEX / Airborne Express Overnight
shipping service is available; Foreign
Shipments are by customer’s preferred
method
- New Tube Sets available,
including our own privately labeled 6550
Tubes. We recommend installation of a new
amplifier tube set at time of rebuilding
to maximize amplifier performance.
- We rigorously test all
rebuilt equipment prior to shipping.
- Most Tube and Solid-State
Leslie amplifiers repaired, subject to
our acceptance
NOTE: All Shipping, Insurance, Customs, etc.
costs are extra; All rebuilding cost estimates
given prior to our inspection of the amplifier in
our Shop are preliminary estimates only, subject
to revision based upon actual found condition and
/ or model of amplifier. We reserve the right to
refuse to repair or rebuild any amplifier
or other component which has been previously
modified and / or which we feel is unfit for
rebuilding.
HAMMOND Organ Preamplifiers
/ Amplifiers
GOFF Professional can
repair / rebuild your HAMMOND organ tube preamp
or amplifier. We can also supply replacement
vacuum tubes and other high-quality components
including solid-state replacement preamplifiers
for most console organs. Additional
information on solid-state preamplifier
replacements can be found elsewhere in our ON
LINE Catalog.
HAMMOND Organ Vibrato
Scanners
If your organ suffers from poor
vibrato / chorus performance, it may be caused by
an oil-soaked or otherwise malfunctioning vibrato
scanner. We can rebuild most original HAMMOND
Vibrato Scanners to factory fresh performance. A
complete rebuild is performed including:
- Complete disassembly of
the vibrato scanner to component parts
- Chemical cleaning to
remove oil and other foreign material
from the scanner body, insulators, and
wiring
- Replacement of scanner
insulators if needed
- Coating all scanner parts
with clear insulating spray protectant
- Reassembly and test,
including hand Meggaring all scanner
insulated poles to ground.
- Replacement of oil wicks,
bearings and other scanner parts is
available at extra cost
HAMMOND Vibrato Line Boxes
We can repair / rebuild most
HAMMOND Organ Vibrato Line Boxes in tonewheel
generator organ models. The Line Box rebuilding
process includes complete replacement of all
original Capacitors and Resistors. The original
critical-value components fail due to age,
causing random variations in vibrato and chorus
performance and an inconsistent sound.
A hand-matched set of
critical-value components is installed and the
Line Box then is checked to original factory
specifications prior to return. Most HAMMOND
organ Vibrato Line Boxes were made in several
types:
- Later “open steel
frame” style on most B-3, C-3,
A-100, D-100, M-3, and similar organs
manufactured after 1955, except for a
very early organs in these modelgroups
- Early
“Silver-Painted” or
“Black-Painted” Vibrato Line
Boxes contained in most organs
manufactured before 1955
- Price dependent upon exact
type and condition of Line Box
Note: Some Vibrato Line Boxes may not
be suitable for repair / rebuilding due to
condition.
HAMMOND Tonewheel Generators
Many organists complain that
their organ simply does not have the
“punch” or brightness it had when new,
or of later models. The most common overall
reason for this is that the Tonewheel Generator
Filter Capacitors have failed causing the organ
to lose its original factory-fresh consistency,
brightness and quality tone.
After careful inspection and a
thorough cleaning, we replace the original
hand-matched Tonewheel Generator Filter
Capacitors with a new critical-value set of very
high stable and quality hand-matched components.
If necessary, the generator can be recalibrated
to the original factory calibration curve, or to
another specific curve designed by GOFF Professional
for our many touring professional organists
seeking a particular organ sound. All of our
touring HAMMOND organs feature refiltered
Tonewheel Generators and either the original
factory or a modified generator equalization
curve designed for the user.
Later model console organ
Tonewheel Generators, including models B-3,
C-3, A-100, D-100, and RT-3 manufactured from
1955 to 1963, and ALL organs
manufactured prior to 1963 did not
contain an additional level of Resistor /
Capacitor (R/C) Network filtering designed to
reduce crosstalk and 60 Hz hum common in earlier
generators. We can add the later R/C Network
filtering to pre-1963 organs effectively updating
them to later model filter specification
tonewheel generators.
We also offer a GOFF
Professional user-installable kit with new
hand-matched Tonewheel Generator Filter
Capacitors, R/C Networks and complete
installation instructions.
We strongly recommend that all
owners of vintage HAMMOND and Leslie equipment
interested in doing some of the maintenance and
repair / upgrade work themselves purchase the
correct Technical Service Manuals for their
equipment.
HAMMOND Organ and Leslie
Speaker
Rebuilding / Modification to GOFF Professional
Touring Specifications
“I have an original
HAMMOND B-3, but I really
want it rebuilt into a GOFF Professional
B-3 like the ones I see on Television.”
For HAMMOND B-3 and C-3 organ
owners seeking to own a Professional-Quality
HAMMOND organ, we recommend our main rebuilding
package of services and options, which includes
the most common modifications requested by our
touring, church and studio organists. We asked
our touring pros to tell us what items they felt
should be included on a Professional-quality
organ. We then took those suggestions and created
our Professional Rebuild Package. Make no
mistake, this package is NOT a
“wash & wax” repair! It includes
complete refurbishment of the mechanical sections
of the organ including:
- Complete Refiltering of
the Tonewheel Generator, including R/C
filtering;
(recalibration of the generator
to a different EQ curve is available at
extra cost)
- Rebuilding / refiltering /
recalibration of the Vibrato Line Box
- Rebuilding of the Vibrato
Scanner
- Complete Manual Buss Bar
cleaning and relube
- Pedal section rebuilding
(if so equipped)
- Cleaning / refurbishment
of the drawbar base and drawbars
- Replacement of the AC
wiring
- Replacement of START and
RUN switches, as needed
- Leslie hand or foot switch
circuitry for 122, 147 or as specified by
owner
(Leslie hand and foot
switch capability provided at no extra
charge if requested)
- Organ internal wiring will
accept two Leslie speakers; usually wired
for two model 122’s, but can be wired for
almost any model specified by owner
(some custom wiring for different
Leslie models may cost extra)
- Choice of rebuilt Tube
Preamp or Solid-state replacement Preamp
- Application of our
gold-leaf GOFF Professional
logos
(Sorry, our logos are only
available on our custom equipment and are
NOT for sale!)
The GOFF Professional
Organ Rebuild package includes:
- Adjustable Percussion
Volume
- Adjustable Chorus
- Adjustable Spring
Reverberation
Options include:
- Line Out jack with volume
control
- Keyboard Inputs / Outputs
- Bass / Treble controls
- Effect Loops (upper or
lower manual or both)
- String Bass Unit
- “Cry-Baby” WAH
Pedal
- Separate 1/4″
floor-type Volume Pedal instead of
original HAMMOND pedal
- Frequency Conversion Unit (for
operation of 60 Hz 120v organs on 50 Hz,
120v)
- MIDI (one manual, both
manuals and / or pedals)
- Cut-down case and stand
- Custom painting /
refinishing
- other modifications /
options as requested
I also have an original
Leslie 122 (or 147, etc.) and want it to
“Scream”!
A tube-amplifier Leslie speaker
model is considered by many to be a mandatory
item for anyone wishing to recreate the true,
classic Blues / Jazz / Gospel HAMMOND
sound. A solid-state amplifier equipped Leslie
will be loud, but it lacks the warmth and ability
to distort slightly. This distortion forms the
basis for the “fat” sound synonymous
with older HAMMOND’s.
A tube amplifier alone cannot
provide the screamin’ HAMMOND sound. This is
dependent upon the correct selection and
condition of the upper driver, bass woofer,
crossover, etc. We offer replacement Bass
Woofers, Crossovers, Motors, Bearings, Drive
Belts, Upper Plastic Horns, Tube Sets, New Tube
Amplifiers and most other Hammond organ and
Leslie speaker repair and replacement parts. Call
us for free advice before you begin work on your
own equipment.
Complete
Hammond Organ and Leslie Speaker Repair,
Rebuilding and Modification Service is Available
in our Newington, CT Shop.
As an Authorized Hammond
Organ Dealer,
We also offer new Hammond Organs and Leslie
Speakers.
Leslie Connector Kits, Cables, Tube Sets,
Replacement Speakers,
Crossovers, Motors, and many other items are
available.
Call
us for Special new Hammond Organ & Leslie
Package Pricing or for Rental Information
We can completely rebuild your
existing classic Hammond organ and Leslie and
upgrade single-speed Leslie models to two-speed
operation!
Custom Leslie Cabinet Refinishing / Repair /
Painting available.
Hammond organ and Leslie Fitted-Blanket Covers
and original style Roll-or-Kari
Moving Dollies are also available!
Email
GOFF Professional for parts,
equipment, information or technical assistance
with any Hammond Organ or Leslie Speaker
[email protected]
REV. 11-28-97
APG / BPG
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