Leslie 22H User manual

LESLIE
ORGAN SPEAKER
PIPE VOICE OF THE ELECTRIC ORGAN
ODEL 22H
ODEL 22R
HAMMOND
ORGAN
OWNER'S MANUAL
INSTRUCTIONS, SERVICE INFORMATION
AND PARTS LIST
ELECTRO
PASADENA (BJ <
MUSIC
CALIFORNIA
1VJH 5

CONTENTS
Amplifier, servicing information -16
Bass speaker 17
Bass speaker, removal and replacement 19
Bass rotor removal and replacement 19
Bearings replacement 19
Belt replacement, upper and lower 18
Belt tension adjustment 18
Brilliance of sound 16
Broadcasting with the Leslie Speaker 7
Cables, connecting 6
Cables, connecting, multiple installations 9
DIAGRAMS AND SCHEMATICS
A- 100 installation 3
Amplifier _15,23
Connecting cables 6
Large models installation 4
L-100 installation 2
M-l installation 2
M-2 installation 2
M-3 installation 2
M-100 installation .2
Multiple speaker installations 11, 12, 13
Multiple speaker installations guide 14
Parts identification 20
Power relay, 5A 9
Tremolo control, 428 15
Type 2adapter 15
3H echo control 15
3M echo control 15
Distortion 16
EARLY LESLIE SPEAKERS
Modification of 10
Operation 9
Tremolo control (228) 10
Echo (speaker selector) controls 10
ECHO CONTROL INSTALLATIONS
3H, for large models without built-in speakers 11
3H, for the A-100 model 3
3M, for Models M-l, M-2, M-3 1,
2
Electric brake 17
Electrolytic condensers 17
Fuse 16
Hammond tone cabinets, use of 8, 10, 11, 12, 14
High fidelity use of the Leslie Speaker 7
Horn reflector replacements 19
Idler pulley 19
INSTALLATIONS
A-100 3
Large models (without built-in speaker systems )4
Models M-l, M-2, M-3 1,2
Multiple speaker installations 8
Single speaker installations 1
Line voltage 17
Loudspeaker system and dividing network 17
Maintenance, periodic 6
MOTORS
Disassembly and cleaning 18
Removal and replacement 18
Oiling -.- 6
Other (non-organ )usage of the Leslie Speaker 7
Parts list 21
Phasing, multiple speaker installations 9
Power requirements 9
Preparing the speaker for use 1
Recording with the Leslie Speaker 7
Reflector replacements, horn 19
Replacement parts 16
Reverberation unit installation 7, 8
Screen voltage regulation 16
Servicing and technical information 16
Shipping 7
Speaker selector (echo) controls 10
Specifications 1
Transformer replacement 17
TREMOLO
Control, operation of 5, 16
Control in multiple installations 13
Control voltage, special handling 12
Effects, special 5
Rotor cycling 5
Rotor removal and replacement, bass 19
Rotor removal and replacement, treble 19
Speed adjustment 1
Tubes 6, 17
Voltage readings 17
Volume control setting, multiple speakers 9
Volume control setting, single speaker 5

THE LESLIE SPEAKER
Models 22H &22
R
The Models 22H and 22R Leslie Speakers are
expressly designed for use with the Hammond Organ.
Functionally the two cabinets, as shipped from the
Electro Music factory, are identical. However, the
22R has been prepared for easy installation of the
spinet-type Hammond reverberation kit. Procedures
for connecting the Leslie Speaker will vary according
to the model Hammond Organ which is involved. De-
tailed installation information is contained in this
manual.
The Leslie Speaker is highly efficient since it has
been created exclusively for organ usage. Broad
frequency response is obtained as the result of the
separate handling which is given to upper and lower
frequencies. The unique tremulant produced by the
Leslie Speaker is the result of moving elements, which,
by creating afully realistic tremulant, bring to the
organ atype of sound which is truly characteristic of
the pipe organ. Tremulant is controlled in the Leslie
Speaker simply by turning these moving elements on
or off.
The Leslie Speaker may be used on Hammond
two-manual models which are equipped with built-in
speaker systems, as well as on models without built-
in speaker systems. With the former models aspeaker
selector switch ("Echo") is used to enable the organist
to use the Leslie Speaker and the organ's built-in
speaker system either separately or together. An Echo
switch is also used with the larger Hammond consoles
—those without built-in speaker systems —in instal-
lations employing two or more speaker units.
Complete instructions, for avariety of Leslie Speaker
installations, and for all two-manual Hammond Organ
models, arc given in detail in this owners manual.
SPECIFICATIONS
Cabinet: Selected hardwood veneers with quality lac-
quer finish to blend with consoles.
Dimensions: 29" wide, 20y
2"deep, 41" high.
Speakers: Treble?—compression-type driver, permanent
magnet, 16 ohms impedance,
Bass —15-inch heavy duty, permanent mag-
net, 16 ohms impedance.
Amplifier: 40 watts output.
Power Supply: 117 Volt, 60 Cycle.
Power Consumption: 2.1 Amps, 190 Watts.
Weight—22H: 135 pounds net
152 pounds, boxed for shipment
22R: 138 pounds net
155 pounds, boxed for shipment
PREPARING THE SPEAKER FOR USE
After unboxing the Leslie Speaker:
1. Remove the upper and lower compartment back
covers; take out the box in the upper compartment
containing the 428 Tremolo Control, the B-f
Adapter, and the lubricating oil. If cabinet is a
22R, also remove the kit of materials for installing
reverberation unit.
2. Remove the wood shipping blocks from the upper
and lower motors and from the amplifier, so that
these units may float freely on their rubber mount-
ings. Save the wood blocks for possible future use
in shipping the cabinet. Also remove the rubber
bands, and in the case of the 22R, the tape used
to hold the upper rotor in position during ship-
ment.
3. Make sure the upper belt is in place on the rotor,
idler, and motor pulleys.
4. Select the groove on the upper motor pulley which
provides the desired tremolo speed. The center
groove is the one used most often; faster or slower
speeds may be obtained by use of the other pulley
grooves.
5. Replace the upper and lower compartment back
covers.
6. Remove shipping skid and place the cabinet so it
rests solidly on the floor. If floor is uneven use
snug-fitting wedges to keep cabinet from rocking.
7. Plug the speaker connecting cable into the Leslie
amplifier. This may be either the 5-conductor cable
(with 6-pole plug) as supplied by Hammond, or
the 6-conductor cable which is obtainable as an
accessory from Electro Music.
Note: Complete preparation of the 22R Leslie Speaker
may involve installation of the reverberation kit.
To make this installation, follow the instructions
given on page 7.
INSTALLATIONS
USING ASINGLE LESLIE SPEAKER
Those installations using asingle Leslie Speaker are
the most common, hence will be discussed first in this
manual. Installations using several Leslies, or com-
binations of Leslie Speakers and Hammond tone
cabinets will be explained in subsequent pages. The
method for connecting asingle Leslie Speaker will
vary according to the model Hammond Organ which
is being used. Complete details will be found in the
following several sections of this manual.
Connecting the Model 22H or 22Rto the Hammond
Spinet, Models L-100, M-l, M-2, M-3, or M-100
When the Leslie Speaker is to be connected to any
of the Hammond Spinet model organs, the Leslie 3-M
Echo Control Kit should be used. This kit contains
the needed connecting cable —in this case a30-foot
length of cable with appropriate connectors installed
at both ends. Also included in the kit is the switch
with associated equipment for the Echo Control, a
device that permits the organist to use either the
Leslie or the console speaker, or to use both speakers
at the same time. A428 Tremolo Control, furnished
with the speaker, provides the means for turning the
Leslie tremolo on and off.
Installation should be made as follows;
1. Attach the tremolo and echo control cases to the
wood rail directly in front of the lower manual
by choosing the two mounting holes in each con-
trol case which best center the wood screws in the
rail. Use the screws which are provided. Controls
may be located together at either end, or with one
at each end of the rail.
2. Pass the control cables into the interior of the con-
sole in one of the following ways
:
a. Push the cables through the felt dust seal found
underneath the manuals just above the knee
panel. (Use asmall screwdriver to push the felt
down to create an opening near the left end of
this seal.) Push the cables through this opening.
b. Run the cables down along the corner where
the knee panel and the end of the console join,
then underneath to the back of the console.
Bring the cables into the console from the rear.
3. Mount the tremolo and echo terminal boxes inside
the console at aconvenient point, making sure that
the connecting and control cables will reach.
Fasten the boxes in place using the wood screws
which are provided.
1

4. Connect the wiring exactly as shown in the follow-
ing diagrams. NOTE: In using the wire nuts be
sure to hold the wire ends parallel and together,
but do not twist them. Insert these ends into the
opening of the nut, pushing firmly and turning nut
in aclockwise direction until the connection is
made secure.
5. Secure the external speaker cable at the lower right
(treble) corner of the console, using the clamp
which is supplied. When all the indicated con-
nections have been made, the installation is com-
plete except for possible regulation of the volume
setting. This should be done, as needed, according
to the instruction given on page 5.
MODELS M-1, M-2, M-100, L-100 CONSOLE INSTALLATION
ECHO
CONTROL
CONNECT THIS BLACK WIRE TO
AMPLIFIER GROUND SCREW ON:
MCONSOLES WITH StRIAL
NUMBERS 8EL0W 3000
LEAVE THIS BLACK WIRE
DISCONNECTED AINSULATE
IT WITH TAPE ON:
M&U-2 C0NS0LL5 WITH
SERIAL NUMBERS ABOVE
3GGG
L-1CG CONSOLES
M-100 CONSOLES
BE SURE TO USE ALL
INSULATING SLEEVES
0R& WIRES FROM
VOICE COIL* TERMS
TREMOLO
CONTROL
MODEL M-3 CONSOLE INSTALLATION
IF TREMOLO CONTROL IS NOT
TO BE INSTALLED, CONNECT THESE
RED AND BLACK WIRES DIRECTLY TO
SCREW TERMINALS ON ECHO BOX.
CABLE AND CONNECTOR (6 POLE)
FOR EXTERNAL SPEAKER
2Z
2
CONNECT UNDER CONVENIENT LESUE ^ADAPTER
6M0. SCREW ON AMR IPLUG INTO AMP.
N^W, socket
L3f
BROWN WIRE NOT USED
CUT SPADE LUGS ON GRY4BLU
WIRES AND SOLDER AS SHOWN
CONSOLE
PREAMP
REI fiLK
®®
ECHO MATCH
COLORS
BRWW
CONNECT THIS BLACK VI RE
TO AMPLIFIER GROUND
SCREV OH
:
M-3 CONSOLES BELOW 107700
WITH AMPLIFIER CODED G,H,
or I
LEAVE THIS BLACK WIRE
DISCONNECTED AINSULATE
WITH TAPE ONi
M-3 CONS0UES SERIAL 4B000
hABOVE WITH AMPLIFIERS
CODED A^C.D.E, &F. (UN-
CODED AMP. DENOTES CODE A
'
M-3 CONSOLES SERIAL 107700
&ABOVE WITH AMPLIFIERS
COOED JAABOVE
ORGAN
CONSOLE
SPEAKER
3M-2 ADAPTER
INCLUDED IN KIT
BE SUftE TO USE
ALL INSULATING SLEEVES
TO SPEAKER SOCKET
ON AMPLIFIER
2

Connecting the Model 22H or 22R Leslie Speaker
to the Hammond Model A-100 Organ
When the Leslie Speaker is to be connected to the
Hammond Model A-100 Organ, the Leslie A-100 Echo
Control Kit should be used. The kit contains the re-
quired connecting cable assembly as well as the 3H
Echo Control. This control enables the organist to
channel the organ's output to the Leslie Speaker, to
the console speaker, or to both speaker systems at the
same time. A428 Tremolo Control, furnished with
the speaker, provides the means for turning the Leslie
tremolo on and off.
The Leslie Speaker is connected to the Hammond
Model A-100 Organ by following the steps described
below:
1. Attach the tremolo and echo control cases to the
wood rail directly in front of the lower manual
by choosing the two mounting holes in each con-
trol case which best center the wood screws in
the rail. Use the screws which are provided.
Controls may be located together at either end, or
with one at each end of the rail,
2. Pass the control cables into the interior of the
console in one of the following ways:
a. Push the cables through the felt dust seal
found underneath the manuals just above the
knee panel, (Use asmall screwdriver to push
the felt down to create an opening near the
left end of this seal.) Push the cables through
this opening into the generator compartment,
then reach behind the starting motor and pull
the cables through.
b. Kun the cables down along the corner where
the knee panel and the end of the console are
joined, then underneath toward the back of
the console. Remove the back of the console
and cut asmall notch in the bottom shelf to
provide access for the cables to the interior of
the console.
3. Mount the tremolo and echo terminal boxes inside
the console at aconvenient point, making sure
that the connecting and control cables will reach.
Fasten the boxes in place using the wood screws
which are provided.
4. Remove the jumper wires between the gray and
black terminals and between the blue and red
terminals on the console amplifier. These jumper
wires arc inside the amplifier, as indicated in the
schematic diagram.
a.
6.
7.
8.
9,
10,
11
12.
Remove the red and black wires from the console
pre-amplifier "G-G" terminals which are located
near the tone control. Attach these two wires to
the "Main" terminals on the 3H Echo terminal
box, using the spade lugs which are provided.
Attach the red and black wires from the 3H Echo
terminal box to the "G-G" terminals just vacated.
Attach the 4-wire echo control cable to the 4-wirc
cable from the 3H Echo terminal box, matching
all the colors, and using the wire nuts which arc
provided. NOTE: In using the wire nuts, be sure
to hold the wire ends parallel and together, but do
not twist them. Insert these ends into the opening
of the nut, pushing firmly and turning nut in a
clockwise direction until the connection is made
secure.
Attach the wires from the 428 Tremolo terminal
box:
Red and Black wires to the "echo" terminals on
the 3H Echo terminal box.
Brown wire to the brown wire on the octal tube
adapter, using the spade lug connection, and
pushing the insulating sleeve over the terminal
after the connection has been made.
Yellow wire to aconvenient ground connection.
Remove the 5U4-GB tube from the console ampli-
fier, then insert the octal tube adapter into the
vacated socket. Finally, insert the 5U4-GB tube
into the adapter.
Using the blue and gray wires which are furn-
ished, make aconnection between the terminals of
the 428 Tremolo terminal box, and the blue and
gray terminals on the console amplifier.
Attach the 2-wirc tremolo cable to the 2-wire
cable from the 428 Tremolo terminal box, using
the wire nuts which arc provided. Be sure to
follow the previously explained procedure in using
the wire nuts.
Insert the plug of the 727-5 Adapter into the extra
speaker socket on the A-100 Amplifier, then insert
the connecting cable plug into the adapter. The
receptacle at the opposite end of the cable is to
be connected to the amplifier in the Leslie
Speaker. The installation is now complete except
for the regulation of the volume, as may be re-
quired. The volume control should be set accord-
ing to detailed instructions on page 5.
OCTAL TUBE
ADAPTER
TREMOLO
CONTROL
WIRE MJTS
HOLD WIRE ENDS PARALLEL AND
TOGETHER 9UT 00 NOT TWIST.
WHILE PUSHING WIRES FIRMLY
IfMTO MOUTH OF NUT, SCREW ON
WIRE NUT.
o
u
FURNISHED WITH LESLIE
A- 100 KIT —
-
A
INSULATING
SLEEVE
MATCH
COLORS
A-100 PREAMPLIFIER (UPSIDE D0WM)
RED
O
o
GO
o
CD
GO
BLACK GROUND
BLACK
1
khov
K0RIG1IMAL WIRES TO PREAMPLIFIER G-G
428 TREMOLO TERMINAL 60/ o-H ECHO TERMINAL BOX
TO
LESLIE
CABINET 727 CABLE
D-
-
6
o
(JJ
NPUT SPEAKER
A-100 POWER AMPLIFIER
3