Leslie 525 User manual

Innovative Sound Systems
Owners Manual
Models 525 / 3301
SPEAKERS

CAUTION
RISK OF ELECTRIC
SHOCK, DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol indicates that dangerous
voltage constituting a risk of electric
shock is present within this unit.
This symbol indicates there are important
operating and maintenance instructions
in the literature accompanying this unit.
Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
Only use attachments/accessories specified by the manufac-
turer.
Use only with the cart, stand, tripod,
bracket, or table specified by the
manufacturer, or sold with the
apparatus. When cart is used,
use caution when moving the
cart/apparatus combination to
avoid injury from tip-over.
Unplug this apparatus during lightning storms or when
unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
Apparatus shall not be exposed to dripping or splashing and
no objects filled with liquids, such as vases, shall be placed
on the apparatus.
WARNING: To reduce the risk of fire or electrical shock,
do not expose this apparatus to rain or moisture.
PORTABLE CART WARNING
S3125A
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings.
Install in accordance with the manufacturer’s
instructions.
Do not install near any heat sources such as
radiators, heat registers, stoves or other
apparatus (including amplifiers) that produce
heat.
Do not defeat the safety purpose of the
polarized or grounding type plug. A polarized
plug has two blades with one wider than the
other. A grounding type plug has two blades
and a third grounding prong. The wider blade
or third prong is provided for your safety. If
the provided plug does not fit into your
outlet, consult an electrician for replacement
of the obsolete outlet.
IMPORTANT SAFETY INSTRUCTIONS
OWNERS MANUAL Models 525, 3301
1

We greatly appreciate your purchase of a new Leslie speaker system. If this is
your first purchase of a Leslie product, we would like to welcome you into the
Leslie family. If you are a repeat customer, thank you for your continued
confidence in our Leslie products.
Your new Leslie speaker system was engineered and manufactured to the
most stringent-quality standards, reproducing the full-spectrum sound of musi-
cal instruments and housed in acoustically-engineered cabinet. This will assure
that your new Leslie will sound and look great for many years to come.
Your Leslie speaker culminates many years of research and dedication to the
art of sound reproduction and is carefully designed and tested to provide long
dependable service.
Many features have been included in this speaker to insure the finest sound from
your organ or keyboard product. Please take a moment to carefully read this
manual and familiarize yourself with many of the fine features found in your
new Leslie speaker system. Take pride in being the owner of the most innova-
tive sound system in the industry today.
Thank You!
www.hammondorganco.com 2

The Leslie 525 / 3301 stationary speaker systems have been designed to enhance and amplify the sound of
most keyboard products on the market today. It can also be used to add an additional channel to any Leslie
speaker to facilitate multi-channel organs. These Leslies feature a 300-watt RMS solid-state single-channel
amplifier. Its five-speaker system produces extremely clean highs and solid deep bass that you can actually
feel! To make it easy to connect to most keyboard or electronic organs, we have provided an 11-pin Leslie
connector and a ¼” line input jack on the rear panel. Master volume, bass and treble controls are provided so
that you can adjust the sound to match your room acoustics.
Product Overview
The Leslie 525, in its furniture-grade cabinet, was designed
to be placed directly on top of any traditional Leslie speaker
such as our 122XB or our 971 for multi-channel installations
or in any remote position. The Leslie 3301 with its rugged
cabinet was designed to be placed directly on the floor when
used to amplify a keyboard-type product. In the case when
you need to add an additional channel to our portable Leslie
3300, this cosmetically matching unit can be placed directly
on top of the Leslie 3300. If you desire true stereo separation
in your musical performance, use two Leslie 525s or 3301s.
Diagram of Models 525 & 3301
Tweeters
OWNERS MANUAL Models 525, 3301
3
Treble
80W
15” Speaker
Crossover
Network
Signal Input
Bass
220W
Power Switch Line In Line Out
11-pin Leslie
Connector
Line Cord
Leslie 525 Rear Panel
BASS
LEVEL
TREBLE
LEVEL
MASTER
LEVEL
LINE
OUT
LINE
IN
POWER
OFF ON
Master Level
Treble Level
Bass Level
Mid-range
1”
1”
5 1/4”
5 1/4”

Leslie Setup Procedures
1. Place your Leslie 525 or 3301 speaker in a location that produces the best sound reproduction.
2. If you wish to connect your Leslie by means of an 11-pin Leslie cable assembly, carefully plug the male
end of the 11-pin Leslie cable assembly into the female socket located on your organ or keyboard. You
also have the option of connecting your organ or keyboard to your Leslie 525 or 3301 by means of a cable
with ¼” plug on both ends (not provided). Plug one end of the cable assembly into the Line Out jack on
your organ or keyboard, and the other end to the Line In jack on the Leslie. Then proceed to step 4.
3. Repeat the above procedure to connect the other end of the Leslie cable to the Leslie speaker.
4. Plug the AC power cord from the Leslie into a 120V AC outlet.
5. Turn the Master volume control on the Leslie (see page 3) to the fully counterclockwise position. Set the
bass and treble controls to the mid-position.
6. If you are connecting a Hammond organ to your Leslie, pull all the upper and lower drawbars including
the pedal drawbar fully out (#9 positions). Set the expression pedal to the loudest position (fully
depressed). For non-Hammond products, set the volume control to the loudest position and set the voice
registration to a setting that provides maximum sound (i.e. Full organ).
7. Turn on the power switch on your organ or keyboard product and on your Leslie if you are using the ¼”
Line Input jack. For organs, play a three-note chord on the upper and lower manuals and depress the low
“C” pedal. For keyboards, place the unit in the split keyboard mode and play a three-note chord on the
upper manual and the low ”C” pedal note. Have someone slowly turn the volume control clockwise on
the Leslie until the sound begins to distort, then slowly decrease the volume (turn the control
counterclockwise) until the sound is undistorted. Your volume control is now properly set.
In most cases, your local Leslie dealer will connect your new Leslie speaker to your organ or keyboard
product. In the case that no setup was provided or if you wish at a later time to move your Leslie speaker to
another location, please carefully read and follow the appropriate setup procedure.
www.hammondorganco.com 4
Caution: Do not play your Leslie at a volume setting that produces a distorted sound. Severe damage
may occur to your new Leslie if played in this condition for an extended period of time
Single Leslie Installation
This Setup procedure should be followed when connecting an organ or keyboard to a single Leslie 525
or 3301.
Lesie 525 or 3301 Organ or Keyboard product
11-pin Leslie cable
assembly or audio
cable with 1/4” jacks

Installing two 525 or 3301 Leslies with 11-pin Leslie cable assembly
1. Place your Leslie 525 or 3301 speakers in a location that produces the best sound reproduction.
2. Review the position of your organ or keyboard and determine the best method of routing the optional
Leslie cable assemblies.
3. Plug the male end of the optional 11-pin stereo Leslie “Y” adapter into the 11-pin Leslie connector on the
back of your organ or keyboard.
4. Connect the male end of an optional 11-pin Leslie cable assembly into the left-channel Leslie connector
on the 11-pin stereo “Y” adapter. Connect the other end of the 11-pin Leslie cable assembly to the Leslie
525 or 3301 which will be used for the left-channel audio.
5. Connect the male end of another 11-pin Leslie cable assembly into the right-channel Leslie connector on
the 11-pin stereo “Y” adapter. Connect the other end of the 11-pin Leslie cable assembly to the Leslie 525
or 3301 which will be used for the right-channel audio.
6. Plug the AC power cords from the Leslies into a 120V AC outlet.
7. Turn the Master volume controls on the Leslies (see page 3) to the fully counterclockwise position. Set
the bass and treble controls to the mid-position.
8. If you are connecting a Hammond organ to your Leslie, pull all the upper and lower drawbars including
the pedal drawbar fully out (#9 positions). Set the expression pedal to the loudest position (fully
depressed). For non-Hammond products, set the volume control to the loudest position and set the voice
registration to a setting that provides maximum sound (i.e. Full organ).
9. Turn on the power switch on your organ or keyboard product. For organs, play a three-note chord on the
upper and lower manuals and depress the low “C” pedal. For keyboards, place the unit in the split
keyboard mode and play a three-note chord on the upper manual and the low ”C” pedal note. Have
someone slowly turn the volume control clockwise on one of the Leslies until the sound begins to
distort, then slowly decrease the volume (turn the control counterclockwise) until the sound is undistorted.
Your volume control is now properly set. Repeat this procedure for the other Leslie speaker.
This Setup procedure should be followed when connecting a stereo organ or keyboard equipped with an
11-pin Leslie connector to two Leslie 525s or 3301s. This installation provides true stereo imaging by
providing left and right audio channels. The purchase of an optional 11-pin stereo Leslie “Y” adapter and
two Leslie cable assemblies from your local Leslie dealer is required to complete this installation.
Caution: Do not play your Leslie at a volume setting that produces a distorted sound. Severe damage
may occur to your new Leslie if played in this condition for an extended period of time.
Leslie 525 or 3301
Leslie 525 or 3301
Organ or Keyboard product
11-pin Leslie cable assembly 11-pin Leslie cable assembly
11-pin stereo Leslie
“Y” adapter
OWNERS MANUAL Models 525, 3301
5

Installing two 525 or 3301 Leslies with ¼” audio cable assemblies
1. Place your Leslie 525 or 3301 speakers in a location that produces the best sound reproduction.
2. Review the position of your organ or keyboard and determine the best method of routing the optional
audio cable assemblies.
3. If your keyboard has separate left and right line output jacks, proceed to step 4. If your keyboard or organ
has a single ¼” stereo output jack, plug the male end of the optional Stereo “Y” adapter into this jack.
Plug one end of the optional audio cable equipped with ¼” plugs into the left-channel output jack on the
stereo “Y” adapter. Plug the other end of the audio cable into the Leslie 525 or 3301 Line Input jack that
will be used for the left-channel audio. Plug one end of the other audio cable into the right-channel output
jack on the stereo “Y” adapter. Plug the other end of the audio cable into the Leslie 525 or 3301 Line
Input jack that will be used for the right-channel audio. Proceed to step 5.
This Setup procedure should be followed when connecting a stereo organ or keyboard equipped with a ¼”
Line Output jack or a ¼” left and right-channel Line Output jack to two Leslie 525s or 3301s. This installa-
tion provides true stereo imaging by providing left and right audio channels. The purchase of audio cable
assemblies outfitted with ¼” male plugs on both ends are required for this installation and are available at
your local audio store. In addition, if your organ or keyboard contains a single stereo line output jack, then
the purchase of a stereo “Y” adapter is also required. This adapter should have a male ¼” jack for the Line
Input signal and two female ¼” sockets for the left and right output signals.
www.hammondorganco.com 6
Leslie 525 or 3301 Leslie 525 or 3301
Organ or Keyboard
product
Stereo adapter Stereo line output jack
Audio cable
Line out
Right channel
Leslie 525 or 3301 Leslie 525 or 3301
Organ or Keyboard product
Line out
Left channel
Audio cable
OR
Audio cable Audio cable

Installing two 525 or 3301 Leslies with ¼” audio cable assemblies
4. Plug one end of the optional audio cable into the left Line Output jack. Plug the other end of the audio
cable into the Leslie 525 or 3301 Line Input jack that will be used for the left-channel audio. Repeat the
above procedure for the right-channel Leslie speaker.
5. Plug the AC power cords from the Leslies into a 120V AC outlet.
6. Turn the Master volume controls on the Leslies (see page 3) to the fully counterclockwise position. Set
the bass and treble controls to the mid-position.
7. If you are connecting a Hammond organ to your Leslie, pull all the upper and lower drawbars including
the pedal drawbar fully out (#9 positions). Set the expression pedal to the loudest position (fully
depressed). For non-Hammond products, set the volume control to the loudest position and set the voice
registration to a setting that provides maximum sound (i.e. Full organ).
8. Turn on the power switch on your organ or keyboard product.. For organs, play a three-note chord on the
upper and lower manuals and depress the low “C” pedal. For keyboards, place the unit in the split
keyboard mode and play a three-note chord on the upper manual and the low ”C” pedal note. Have
someone slowly turn the volume control clockwise on one of the Leslies until the sound begins to distort,
then slowly decrease the volume (turn the control counterclockwise) until the sound is undistorted. Your
volume control is now properly set. Repeat this procedure for the other Leslie speaker.
Caution: Do not play your Leslie at a volume setting that produces a distorted sound. Severe damage
may occur to your new Leslie if played in this condition for an extended period of time.
OWNERS MANUAL Models 525, 3301
7

Installation Using an 11-pin Rotary Leslie and a 525 or 3301 Leslie
1. Carefully position the Leslie 525 or 3301 on top of your 11-pin
rotary Leslie speaker.
2. Plug the female Leslie connector that is the farthest away from the
male Leslie connector found on the optional 11-pin Leslie “Y”
adapter into the 11-pin Leslie connector located on the back of the
Leslie 525 or 3301.
3. Plug the remaining female Leslie connector found on the 11-pin
Leslie “Y” adapter into the 11-pin Leslie connector located on the
back of your Leslie rotary speaker.
4. Plug the male Leslie connector found on the Leslie “Y” adapter into
the 11-pin Leslie cable assembly usually supplied with your Leslie
rotary speaker. If additional Leslie cable assemblies are needed, you
can purchase them from your local Leslie dealer. The other end of
the Leslie cable assembly should be plug into the 11-pin Leslie
connector found on your organ or keyboard product.
5. Plug the AC power cords from the Leslies into a 120V AC outlet.
6. Turn the Master volume controls on your Leslie 525 or 3301 (see
page 3) to the fully counterclockwise position. Set the bass and
treble controls to the mid-position.
7. If you are connecting a Hammond organ to your Leslie, pull all the
upper and lower drawbars including the pedal drawbar fully out
(#9 positions). Set the expression pedal to the loudest position
(fully depressed). For non-Hammond products, set the volume
control to the loudest position and set the voice registration to a
setting that provides maximum sound (i.e. Full organ).
8. Turn on the power switch on your organ or keyboard product. For
organs, play a three-note chord on the upper and lower manuals and
depress the low “C” pedal. For keyboards, place the unit in the split
keyboard mode and play a three-note chord on the upper manual and
the low ”C” pedal note. Have someone slowly turn the volume
control clockwise on the Leslies 525 or 3301until the sound begins
to distort, then slowly decrease the volume (turn the control
counterclockwise) until the sound is undistorted. Your volume
control is now properly set.
This Setup procedure should be followed when connecting an organ or keyboard equipped with an 11-pin
Leslie connector to an 11-pin rotary Leslie speaker such as Leslie 122XB, 971, or 3300, and a Leslie 525 or
3301. In this installation, the Leslie 525 or 3301 is placed directly on top of the rotary Leslie speaker. The
purchase of an optional 11-pin Leslie “Y” adapter from your local Leslie dealer is required to complete this
installation.
www.hammondorganco.com 8
Leslie Y cable
971 or other
Leslie 11-pin
male socket
Organ or Keyboard
female Leslie 11-pin socket
11-pin Leslie cable
525 or 3301
Leslie 11-pin
male socket
Caution: Do not play your Leslie at a volume setting that produces a
distorted sound. Severe damage may occur to your new Leslie if
played in this condition for an extended period of time.

One of the first considerations will be where to place the speaker for the best
all-around effect. Most musicians prefer having the Leslie speaker near the
organ or keyboard product so that the sound is balanced to their desired level.
Closer or more distant locations are easily accommodated by adjusting the
volume level of the speaker (see page 4 Leslie Setup Procedure).
Care of your new Leslie Speaker
Your new Leslie speaker has been carefully engineered for durability and maximum service. Except for
occasional replacement of maintenance items such as belt and vacuum tubes, your new Leslie speaker will
require little or no attention.
CAUTION
As with any electrical or electronic equipment, care should be exercised to prevent fire and shock hazard.
The following information is provided to give guidance in the safe use and care of your Leslie speaker.
ENVIRONMENT
This speaker is primarily designed to be used in an interior environment. To prevent an electrical shock
hazard, do not expose your Leslie to wet floors, liquid spills and splashes, or rain.
ENCLOSURE
The removal of any part of the enclosure may result in exposure to electrical shock. Servicing should not be
attempted by the user; refer all servicing to factory-trained technicians.
POWER
Operate this speaker only at the AC voltage and frequency indicated on the nameplate located on the back of
the Leslie.
CLEANING THE CABINET
Use a soft cloth or chamois, slightly dampened with water. A little mild detergent may be added to the water
if necessary. For the Leslie models finished in red walnut, rub lightly with the grain of the wood. Excessive
rubbing in one spot or at the edge of the cabinet may damage the finish. Use a good grade of furniture wax
or polish.
Where to place your new Leslie Speaker System
OWNERS MANUAL Models 525, 3301
9
Whatever the distance from the keyboard, the Leslie
speaker should be given enough space so the sound
can radiate fully through the room. Restricting the
sound dispersal by placing the cabinet against a wall
or between large pieces of furniture reduces the
effectiveness of the speaker. Sound reflection is
desirable. Yet in most homes, much sound is absorbed
by furniture, rugs and drapes, rather than being
reflected. Placing the speaker diagonally in a corner
is a good practice. Sound will be reflected off the two
adjacent walls, enhancing the beauty, power and
dispersion of the music.

MOVING OR RELOCATING YOUR LESLIE SPEAKER
So as not to damage your Leslie cables, carefully unplug both ends of the cable before moving your Leslie
speaker. To prevent damage to the cabinet, it is advisable that more than one person move the speaker.
PACKING AND SHIPPING
Packing and shipping should be done by your local Leslie dealer or by a qualified mover. The speaker should
not be moved or carried on its side or upside down, as this will result in damage to the moving parts inside the
cabinet. The cabinet must be moved, carried or shipped in an upright position. The exterior should be
protected by boxing the cabinet or covering it with padding.
SPECIFICATIONS:
Leslie models 525 / 3301
- Single-Channel Input
- Amplifier: 300-Watt RMS Total: 220-Watt RMS bass amplifier
- 80-Watt RMS treble amplifier
- Speakers: 550-watt, 15” woofer, 2 – 5 ¼” mid-range and 2 – 1” tweeters
- Inputs: 11-pin Leslie connector and ¼” Line Input jack
- Outputs: ¼” Line Output jack suitable to drive a powered sub-woofer
- Controls: Master volume, bass and treble level, and power on/off switch
- Dimensions: Model 525 – 18 3/8” H, 28 7/8” W, 20 3/8” D
- Model 3301 – 28 3/8” H, 18 3/4” W, 20 3/8” D
- Weight: Model 525 - 99 lbs
Model 3301 – 100 lbs
OPTIONAL ACCESSORIES
Shown below are only a few of the available optional accessories for your new Leslie Speaker. Visit our
website or your local Leslie dealer to view all the available products to enhance your Leslie Speaker.
11-pin Leslie cable assemblies
These cable assemblies
are available in 30’,
50’ and 100’ lengths.
www.hammondorganco.com 10
This adapter is used to connect two
11-pin Leslies to multi-channel organs
or keyboards that have a single 11-pin
Leslie connector. This adapter provides
either a right or left channel to each of
the Leslies to enhance the stereo imaging.
11-Pin Stereo “Y” Adapter
11-pin Leslie “Y” cable
This adapter is
used to connect
two 11-pin Leslie
speakers to a
Hammond Organ
or keyboard that
has a single
11-pin Leslie
connector.

SERVICE
Hammond maintains a policy of continuously improving and upgrading its
instruments and therefore reserves the right to change specifications without notice.
Although every attempt has been made to insure the accuracy of the descriptive
contents of this manual, total accuracy cannot be guaranteed.
Should the owner require further assistance, inquiries should first be made to your
Authorized Hammond Dealer.
If you still need further assistance, contact Hammond at the following address.
Hammond Suzuki USA, Inc
733 Annoreno Drive
Addison, IL 60101
Phone: 1-888-ORGAN B3
Fax: [phone]
Visit our website
www.hammondorganco.com
SPEAKERS
2006 Hammond Suzuki USA H04006 Printed in USA