INTRODUCTION
This document covers the 5, 6, 9, and 11 pin STANDARD systems used by Leslie. Pay special attention to the model's listed in each section, as there are a number of Leslies out there with "nonstandard" interfaces.
FIVE PIN SYSTEM
This system was originally designed by Hammond to connect Hammond tone cabinets to later model Hammond Organs which no longer needed the B+ supply from the cabinet. It also is used to "daisy-chain" older Hammond series (21H, 22H etc.) Leslies. It was also utilized to connect Hammond-type model Leslies to later Hammond Organs (-2 and -3 models among others) via 8000-type connector kits and five-pin sockets at the console. Since a 5 pin plug to 6 pin socket cable is used in this application, I have provided the "6 pin" column to illustrate the wiring of one of these "5 to 6" cables.
5 PIN
|
6 PIN
|
FUNCTION
|
COLOR
|
1
|
1
|
1 of 2 Audio
|
Black
|
2
|
3
|
1 of 2 Mains
|
Gray
|
3
|
2
|
Ground
|
Yellow
|
4
|
4
|
2 of 2 Mains
|
Blue
|
5
|
6
|
2 of 2 Audio
|
Red
|
NO CONNECTION
|
5
|
B+
|
None
|
PLUG DIAGRAM
SIX PIN SYSTEM
There were three versions of this system,each for a different family of tone cabinets.
Balanced Interface - For Hammond Organs because of their balanced output. Includes Models: 30A, 30C, 31A, 31H, 21H, 22H, 22R, 122, 122R, 122V, 122RV, 142, 222, 222RV, 242 and current 122A, 122A-T.
NOTE: Early "30" series models below serial number 5200 were not designed to be used with a console connector kit. They must be connected to a Hammond Tone Cabinet socket unless they are modified by the addition of blocking capacitors on the input, or one of Leslie's original adapters (NLA) is installed.
Unbalanced Interface - Designed so that Leslies would be compatible with Wurlitzer organs, later these models were used on a wide variety of organs. For this reason, the Unbalanced Interface is sometimes referred to as Universal. Includes Models: 25, 31W, 44W, 46W, 45, 47, 47R, 110, 112, 114, 116, 120, 120C, 125, 225, 145, 147, 147V, 147RV, 245, 247, 247RV, and current 147A.
NOTE: Early models could be ordered without a power amplifier. Models without power amplifiers have the speaker(s) connected directly to pins 1 and 6.
Dual Channel Interface - Actually a derivative of the Unbalanced interface. Wiring has been rearranged to allow two audio inputs instead of one. This was done to accommodate Conn's two channel organs. Again, this system found it's way onto other organs, for example the Hammond A-100. Includes Models: 50C, 55C, 51C, 251, and 351.
NOTE: The Model 55C has no tremolo relay and pin 2 is not connected. With the 55C, tremolo is accomplished by switching audio channels at the organ.
Pin #
|
Color
|
Balanced
|
Unbalanced
|
Dual Channel
|
1
|
Black
|
1 of 2 Audio
|
Ground
|
Ground
|
2
|
Yellow
|
Ground
|
1 of 2 Tremolo relay
|
1 of 2 Tremolo relay
|
3
|
Gray
|
1 of 2 Mains
|
1 of 2 Mains
|
NOTE 1 below
|
4
|
Blue
|
2 of 2 Mains
|
2 of 2 Mains
|
2 of 2 Mains
|
5
|
Brown
|
B+ (300 v dc +/-)
|
2 of 2 Tremolo relay
|
Audio (Stationary)
|
6
|
Red
|
2 of 2 Audio
|
Audio
|
Audio (Rotary)
|
NOTE 1: On 2 channel cabinets, pin 3 acts as one half of the AC power (MAINS) and as one half of the Tremolo Relay circuit. On these models it is necessary to connect whichever "side" of the mains is attached to pin 4, to a speed control switch. The circuit is completed by routing the power from the switch to pin 2.
SOCKET DIAGRAMS
NINE PIN SYSTEM
The largest change in the 9 pin interface is the addition of independent Slow and Fast control. This allows the selection of Slow Fast and Stop. Includes models 760, 770, 825, 825U, 830, 900, 910, 925.
EXCLUDED MODELS: Models not included above are not interchangeable with the models/types listed above, each one having its own unique pin-out.
Pin Number
|
Color
|
Function
|
1
|
Black
|
Ground
|
2
|
Red
|
Audio
|
3
|
Yellow
|
NO CONNECTION
|
4
|
Orange
|
Audio (Stationary Channel)
|
5
|
Green
|
+28 v dc (Powers CPAII)
|
6
|
White
|
Fast (Ground to activate)
|
7
|
Violet
|
Slow (Ground to activate)
|
8
|
Gray (heavy)
|
1 of 2 Mains
|
9
|
Blue (heavy)
|
2 of 2 Mains
|
SOCKET DIAGRAM
ELEVEN PIN SYSTEM
All later and current Leslie designs have eleven conductor cables. Current standards do not allow AC power to be supplied from the console and this system provides signal and control voltages only. (All eleven pin Leslie models have separate power cords.) Some pins are not connected in models with fewer channels or features.
Pin Number
|
Color
|
Function
|
1
|
Brown
|
Audio (Rotary Channel)
|
2
|
Red
|
Audio (Stationary Channel)
|
3
|
Orange
|
Audio (Aux Channel #1)
|
4
|
Yellow
|
Ground
|
5
|
Green
|
Control Supply Common (Short to pin 6 to turn Leslie on)
|
6
|
Blue
|
Control Circuit Common
|
7
|
Violet
|
Fast (Short to ground to activate)
|
8
|
Gray
|
Slow (Short to ground to activate)
|
9
|
White
|
Ext. Speed Adjust (Only w/ tachometer motors, unused)
|
10
|
Black
|
Audio (Aux Channel #2)
|
11
|
White w/ Black Tracer
|
+29 v dc (Powers CPA)
|
SOCKET DIAGRAM
Revised - 11/00
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