New
PRO-3T POWERED ROTARY HORN UNIT

“Based
on the Characteristic Sound of the Leslie
147”

The Motion Sound PRO-3T Rotary
Horn Unit is an improved version of the very
successful PRO-3 and is a perfect choice for
bands or other players with limited space. Both
the PRO-3 and the PRO-3T were designed to deliver
the classic Leslie Model 147 sound without having
to carry a full size Leslie. The PRO-3T is a
powered “horn-only” unit which is
compact and ruggedly built. It features a true
motorized revolving “horn” for high
frequencies, and a crossover and rotor simulator
for bass frequencies below 800 Hz. These lower
frequencies are directed to a special connector
for use with the Motion Sound LOW-PRO lower rotor
system and to 1/4″ stereo output jacks for
use with a separate bass amp and speakers or
Public Address (PA) system. The PRO-3T is
designed to be used where space is very limited,
but the classic rotary horn sound is desirable.

No electronic simulator or other device can
capture the true rotary horn sound of the 147,
122 or other classic models. Only a true Leslie
or the Motion Sound PRO-3T or R3-147 can
accomplish what professional musicians demand
most – “The Real Deal” in classic
sound.

Enhanced
with a Real 12AX7 Vacuum Tube Preamp for Warmth!

The PRO-3T has a 12AX7 vacuum tube in the
preamp for true “tube warmth” and dial
in front panel pre and post gain controls to
allow the user accurate distortion control from
slight distortion to a 70’s tube crunch
completely overdriven sound. A built-in Contour
(tone) Control allows the user to alter the
PRO-3T sound from a bright solid-state amp sound
to the mellower 147 sound.

Technical
Information

The PRO-3T is equipped with a 40-watt RMS
power amplifier for the rotating horn, and an 18
dB / octave crossover that is designed to cross
over at 800 Hz , with frequencies 800 Hz and
above directed to the rotating horn, and
frequencies below 800 Hz directed to the rotor
simulator and out to the 1/4″ outputs. The
PRO-3T was designed to be easily docked with a
Motion Sound LOW-PRO Model LP-120 lower rotor
system which features an actual mechanical
rotating drum and a 120 watt amplifier and 150
watt 12″ speaker or it can be used with
another very-good quality bass amp and speakers.
If a separate amp and speakers are used, the bass
WILL have the rotary effect of a Leslie
bass-rotor due to the rotor simulator in the
PRO-3T.

A 1/4″ foot switch is supplied with the
PRO-3T to control motor speed switching which
controls both the upper horn unit speed-change
and the bass rotor simulator speed-change
simultaneously. An enhanced lower rotor simulator
with a front panel AM modulation control allows
the user to tweak the bass rotor sound to suit
the situation and equipment. The PRO-3T includes
a special output connector to allow easy docking
with the Low-Pro rotating drum system.

Motion
Sound Gas Pedal (Model GP-120) for
Variable Speed Control of the PRO-3T

Optional Gas Pedal (Model GP-120) will provide variable speed control. (Works with PRO-3 and R3-147)

Motion
Sound LOW-PRO (Model LP-120)

Optional LOW-PRO (Model LP-120) Lower Rotor System (Works with PRO-3 and R3-147)

SPECIFICATIONS

MOTION SOUND PRO-3T

• Actual Rotating Horn System – NOT a Horn
  Simulator
• Power Input Requirement- 117 vac 60 Hz
• Weight – 27 lbs.
• 1/4″ Input Impedance – 100K
• Input Signal Range (design range) – 100
  mV minimum; 300 mV optimum
• Vacuum Tube Preamp stage with 12AX7 tube
• Horn F.E.T. Power Amplifier – 40 watts
  RMS at .2% T.H.D. (Solid-State Amplifier)
• Contour (tone) Control range – 10kHz
  bright setting – 4kHz mellow 147 setting
• Enhanced Stereo Low Rotor simulator with
  front panel AM Modulation control
• 40 Watt Eminence Horn Driver
• Crossover – 18 dB / Octave at 800 Hz
• Speed Control – Slow / Fast / Off with
  Footswitch (included)
• Rear Accessory Output Connector –
  Variable Speed Control with optional
  Motion Sound GAS PEDAL, Model GP-120 and
  connects with LOW-PRO lower rotor system.
• Quiet DC Servo horn motor
• Fast Speed Indicator
• Adjustable Horn Slow, Fast and
  acceleration
• Adjustable Stereo Low Rotor Simulator
  Slow, Fast and acceleration

GOFF Professional offers
special Package Pricing for PRO-3T, LOW-ROTOR and
GAS PEDAL equipment. Complete tour packages
including an XB-2 Keyboard, XM-1 Drawbar Module,
road cases, etc. are also available. Please Email
us for information.

MOTION
SOUND PRO-3T DIMENSIONS

H 6 1/2″  W 20″  D
16 1/2″
Weight 27 lbs.

MANUFACTURED
BY:

Authorized
Dealer:

GOFF
Professional
175 Costello Rd.
Newington, CT  06111 U.S.A.
(860) 667-2358 Phone
(860) 667-3523 FAX

E-Mail:

for information: [email protected]

GOFF Professional
reserves the right to change prices,
specifications, designs, models, equipment and to
discontinue products and services without notice
and without liability. The information contained
herein is strictly for information only. No
guarantee of accuracy is expressed, nor does
anything contained herein constitute any promise
or contractual obligation.

Leslie is a
trademark of HAMMOND-SUZUKI.

REV. 11-22-97
APG / BPG