Toa SR-M3L User manual

OPERATING INSTRUCTIONS
SPEAKER SYSTEM SR-M3L
SR-M3R
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
When Installing the Unit
• Owing to the unit's size and weight, be sure that at
least two persons are available to install the unit.
Failure to do so could result in personal injury.
When the Unit is in Use
• Should the following irregularity be found during
use, immediately stop operating the speaker and
contact your nearest TOA dealer. Make no further
attempt to operate the unit in this condition as this
may cause fire or electric shock.
· If you detect smoke or a strange smell coming
from the unit.
· If water or any metallic object gets into the unit
· If the unit falls, or the unit case breaks
· If it is malfunctioning (no tone sounds.)
1. SAFETY PRECAUTIONS
• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages
regarded as very important precautions are included.
• We also recommend you keep this instruction manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
673 505
394
Unit: mm
Note: The SR-M3L's design is in a mirror image of the above illustration.
[SR-M3R External Dimensions]
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
WARNING
CAUTION
WARNING

2. GENERAL DESCRIPTION
TOA's SR-M3L and SR-M3R stage monitor speakers are especially designed for touring applications.
They feature high sound quality, high power handling capacity, and robust construction that protects the unit
from damage during transportation and setup.
3. FEATURES
•Both the SR-M3L and SR-M3R are single-amp driven speaker systems with passive internal networks.
The speakers can also be easily converted to "biamp" operation by changing the unit's internal wiring.
•Internal 38 cm woofer having a large 20 cm magnet
•The tweeter features a large, high-power driver, a titanium diaphragm, and a 40°horizontal x 60°vertical
constant directivity horn.
•Neutrik NL4MP connectors are used to facilitate and ensure tight cable connections. Two Neutrik connectors
are provided to permit parallel speaker connections.
4. NEUTRIK CONNECTORS AND THEIR WIRING DIAGRAM
•The Neutrik input connectors are shown at right.
Because both connectors are internally connected in parallel,
either connector may be used for connection.
•For wiring of the NL4MP connector pins, refer to the table on
the right.
•The Neutrik connector (on the cable side) that can match to
the NL4MP is the NL4FC.
Wiring diagram
When the Unit is in Use
•Do not operate the unit for an extended period of
time with the sound distorting. This is an indication
of a malfunction, which in turn can cause heat to
generate and result in a fire.
•Do not stand or sit on, nor hang down from the unit
as this may cause it to fall down or drop, resulting
in personal injury and/or property damage.
Input connector
NL4MP
Input connector
NL4MP
1+
2+
1
-
2 -
1+
2+
1
-
2 -
Speaker (+)
Speaker (
- )
Pin No. SR-M3L/SR-M3R
1 + Speaker +
1 –Speaker –
2 + -
2 –
-
CAUTION

Front grille mounting screw
(
marked with an arrow
)
Front grille
Speaker with its woofer and horn removed
Connector
Circuit board
Connector
（Circuit board side）
Supplied lead wire
connector
Connector inside
an enclosure
5. ABOUT BIAMP OPERATION
5.1. How to Change the Unit's Internal Wiring
Both the SR-M3L and SR-M3R are single-amp driven speaker systems, but they can also be easily converted
to "biamp" operation by changing the unit's internal wiring.
Step 1. Remove the front grille mounting screws
(6 places) to detach the grille.
Step 2. Detach the woofer and horn by removing
their mounting screws (8 pieces each).
Step 3. Disconnect the connector inside an
enclosure.
Step 4. Remove lead wires of the woofer and driver.
Step 5. Bundle circuit board side wires of the
connector disconnected in Step 3 and wires
removed in Step 4 together near the circuit
board.
Step 6. Insert the supplied lead wire with a connector
into the connector inside the enclosure
disconnected in Step 3.
Step 7. Connect the supplied lead wires to the
woofer and driver as shown in the table.
Step 8. Reattach the woofer and horn using screws.
Step 9. Reattach the front grille using the front grille
mounting screws.
5.2. Input Connector Pin Assignment for Biamp Operation
Lead Wire Color Speaker
Green Woofer, red push terminal (+)
Black Woofer, black push terminal (–)
Red Driver, + terminal
White Driver, –terminal
Pin No. SR-M3L/SR-M3R
1 + LOW +
1 –LOW –
2 + HIGH +
2 –HIGH –

6. SPECIFICATIONS
* Pink noise input: 50 – 20,000 Hz, 24 hours
Note: The design and specifications are subject to change without notice for improvement.
• Accessory
Lead wire with connector for biamp operation connection ...... 1
Enclosure Type Bass-reflex type
Power Handling Capacity Continuous pink noise: 200 W*
Continuous program: 600 W
Rated Impedance 8 Ω
Output Sound Pressure Level 100 dB (1 W, 1m)
Frequency Response 65 – 20,000 Hz
Crossover Frequency 1 kHz (passive network)
Internal Speaker Low frequency: 38 cm diameter cone speaker
High frequency: Compression driver
Horn Constant directivity horn: 40° horizontal x 60° vertical
Input Connector Neutrik NL4MP x 2
Enclosure Material Plywood
Finish Enclosure: Black, paint
Grille: Black, acryl-painted
Dimensions 673 (w) x 394 (h) x 505 (d) mm
Weight 34 kg
Input connector
NL4MP
Input connector
NL4MP
1+
2+
1
-
2 -
1+
2+
1
-
2 -
Green (+)
Black ( - )
Red (+)
White (
- )
LOW (Woofer)
HIGH (Driver)
INPUT HIGH
LOW
DP-0204 (SR)
SR-M3L, SR-M3R
Power amplifier
5.3. Biamp Operation Wiring Diagram
5.4. Biamp Operation Connection
133-01-425-3A
URL: http://www.toa.jp/
Traceability Information for Europe (EMC directive 2004/108/EC)
Manufacturer:
TOA Corporation
7-2-1, Minatojima Nakamachi, Chuo-ku, Kobe, Hyogo,
Japan
Authorized representative:
TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg,
Germany