LESLIE CABLE COLORS and PIN
CONNECTIONS
©1994-2001, Harvey Olsen
SIX-PIN SYSTEMS -
Don Leslie adopted Hammond's six-pin tone cabinet wiring in 1940 because it was
easier to connect 30A Leslie Speakers to early Hammond organs. As additional Leslie models were developed
for other organs, notably Wurlitzer and Conn, six-pin plugs and sockets were
retained. Six conductor cables are
interchangeable but the six-pin Leslie types are not. Input connections and channeling differ - using an incorrect
Leslie type is hazardous plus the speaker will not function properly.
|
PIN |
COLOR |
HAMMOND (6H) |
WURLITZER/UNIVERSAL (6W) |
CONN/TWO-CHANNEL (6C) |
|
1 2 3 4 5 6 |
Black Yellow Gray Blue Brown Red |
Input (Balanced) Signal/DC Ground AC Power In AC Power In B+ (Approx.
300 VDC) Input (Balanced) |
Signal Ground Motor Relay Coil AC Power In AC Power In Motor Relay Coil Signal Input (Unbalanced) |
Signal Ground Motor Relay Coil AC Power In AC Power In/ Relay Coil Channel Two Input (Unbalanced) Channel One Input (Unbalanced) |
HAMMOND (6H) - Includes
Models: 30A, 30C, 31A, 31H, 21H, 22H, 22R, 122, 122R, 122V, 122RV, 142, 142A,
222, 222RV, 242, 122A-T and current 122A. Early "30" series models below serial number 5200 have
no provision to isolate DC control voltages and can not be used with 6H-type
hookups unless their power amps are upgraded to later specs.
WURLITZER/UNIVERSAL (6W) - Includes Models: 31W (except very early version), 44W, 46W,
25, 45, 47, 47R, 110, 112, 114, 116, 120, 120C, 125, 225, 145, 145A, 147, 147V,
147RV, 245, 247, 247RV, and current 147A.
(Spinet-type Leslies without power amps have their speaker(s) connected
directly to pins 1 and 6.)
CONN/TWO-CHANNEL (6C) -
Includes Models: 50C, 55C, 51C, 51, 251, and 351 (no current model). Model 55C has no tremolo relay and pin 2 is
not connected. (Tremolo control for
Model 55C is accomplished by switching audio channels at the organ.)
Note: "Wurlitzer"
and "Conn" brand designations were dropped in later years. These Leslie types are now used with many
different organ makes and models including Hammond.
FIVE-TO-SIX- PIN HAMMOND SYSTEM - This configuration was originally used to connect Hammond
tone cabinets to Hammond Organs. It was
also used to "daisy-chain" early Hammond series (21H, 22H, etc.)
Leslies together and connect to Hammond-type (6H) Leslie models to later
self-powered Hammond consoles with 8000 series connector kits and five-pin
sockets at the console.
|
FIVE PIN PLUG |
COLOR |
SIX PIN SOCKET |
HAMMOND-TYPE (6H) MODELS ONLY |
|
|
|
1
2
3
4
5
- |
Black Gray (Shield) Blue Red (None) |
1
3
2
4
6
5 |
Input (Balanced) AC Power In Signal/DC Ground AC Power In Input (Balanced) No Connection |
Note: The
five-to-six-pin system is not
applicable to early Hammond console hookups and Leslie connector kits that
require DC (B+) from the tone cabinet for preamp power or motor control. It also cannot be used with
Wurlitzer/Universal (6W) or Conn/Two-Channel (6C) Leslie models. |
|
NINE PIN SYSTEMS - Nine conductor cables were used with various nine-pin
Leslie types including the more popular single and two channel models listed
below. However, only the ground (pin 1)
and AC input (pins 8 and 9) are consistent in all nine-pin Leslie types. Other nine-pin Leslies are multichannel and
their pin connections and functions differ.
They are not interchangeable with the models listed below and, in most
cases, each other.
Models: 760, 770, 825, 825U, 830, 900, 900U, 910, 925, 950, and
two-channel models 700 and 710.
|
PIN |
COLOR |
FUNCTION |
|
1 2 3 4 5 6 7 8 9 |
Black Red Yellow Orange Green White Violet Gray Blue |
Signal/DC Ground Rotary Channel Input No Connection Non-Rotary Channel Input (Models 700, 710 only) or "Aux” control (Models 900, 910, 925, 950 only) DC Output (+28 VDC) Fast Motor Control (Switching pin 6 to pin 1 turns on
tremolo Motors) Slow Motor Control (Switching pin 7 to pin 1 turns on
chorale Motors) AC Power In AC Power In |
Other Nine Pin Leslie Types - Nonstandard multichannel channel, nine-pin Leslie models
are:
Model 350 (selected
Conn models)
Models 100GK, 101, 102, 103 (Gulbransen, selected Lowrey theatre models)
Models 257, 258, 300, 301
(selected Thomas models)
Models 202, 202S, 212S
(selected Wurlitzer models)
Models 205, 610
(Hammond H-100 and R-100 series, various other two and three channel organs)
Model 600 (various two
and three channel organs but not Hammond)
Models: 610 and 205
(Of the above, only the electrically identical 610 and 205 were used with
Hammond.)
|
PIN |
COLOR |
FUNCTION |
|
1 2 3 4 5 6 7 8 9 |
Black Red Yellow Orange Green White Violet Gray Blue |
Signal/DC Ground DC Output (+125 VDC) Lower Drum Chan Input (Amplifier
4) Bass Channel Input (Amplifier 2) Upper Drum Chan Input (Amplifiers 1 and 3) Lower Drum Control (Grounding pin 6 switches amp 4 from
lower drum speaker to stationary 6x9) Upper Drum Control (Grounding pin 7 switches upper drum
speed from fast to slow) AC Power In AC Power In |
ELEVEN PIN SYSTEM - All later and current Leslie designs have eleven conductor
cables. Current UL, CSA, and other
standards no longer allow AC power to supplied from the console so connecting
cables supply only signal and control voltages. 11-pin Leslies have separate power cords and are, for most part,
electrically interchangeable.
Models: 740 and 750 (typical).
Not all pins are connected in Leslie models with fewer channels or
features.
|
PIN |
COLOR |
FUNCTION |
|
1 2 3 4 5 6 7 8 9 10 11 |
Brown Red Orange Yellow Green Blue Violet Gray White Black White/Black |
Rotary Chan Input (All except specialized models
without the rotary feature) Main Chan/Non-Rotary Input (Leslie models with two or more
channels) Auxiliary #1 Input (Leslie models with three or more
channels) Signal Ground Control Supply Common (May be grounded at the organ or
connector kit) Control Circuit Common (Switching pin 6 to pin 5 turns the
Leslie on) Fast Motor Control (Switching pin 7 to pin 5 turns on
tremolo) Slow Motor Control (Switching pin 8 to pin 5 turns on
chorale) External Speed Adjust (Never implemented, pin 9 is usually
no connection) Auxiliary #2 Input (Four channel models only) +24 VDC Output (For preamp power or Leslie
"sensing" circuits in some organs) |
TWELVE PIN SYSTEM - Only special purpose Leslie models intended for Hammond
X-77 and X-77GT organs have 12-pin plugs and sockets. Twelve pin connectors were used with standard nine conductor
cables to prevent these Leslies from being used for other applications. They are electrically similar to the
multichannel, solid-state, 9-pin models from the 60s and 70s.
Models X-77L and
X-77P
|
PIN |
COLOR |
FUNCTION |
|
1 2 3 4 5 6 7 8 9 10 11 12 |
Black Red Yellow Orange Green White Violet (None) Gray (None) Blue (None) |
Signal/DC Ground Rotary Channel Input Non-Rotary Input (Channeling determined by tab
settings at the organ) Bass Channel Input Non-Rotary Input (Channeling determined by tab
settings at the organ) Tremolo Generator Input (Channeling is determined by tab
settings at the organ Tremolo/Celeste Control (Grounding pin 7 switches horn rotor
to slow and vibrato amplifier channeling) No Connection
AC Power In No Connection AC Power In No Connection |