Toa SR-M1 Manuel utilisateur

INSTRUCTION MANUAL

SR-M1

SR-M2

FLOOR MONITOR SPEAKER SYSTEMS

The AC-M1 electronic control unit (optional) is required when using the SR-M1 or SR-M2 speaker syste .

GENERAL DESCRIPTION FEATURES

The TOA SR-M1/SR-M2 are floor onitor speaker

syste s featuring high power handling capability and

quality sound output. Driven by the bia plification

ethod, both speaker syste s need a dual-channel

electronic control unit AC-M1 (optional) which features a

channel dividing function.

The SR-M1 contains one woofer, and the SR-M2 two

woofers. The woofer e ploys a 20 c (7.9") agnet that

gives a flux density of 16,200 gauss, assuring

highly-efficient, quick-response reproduction of low

frequencies.

The SR-M1 and SR-M2 speakers e ploy the HFD-652

high-power driver unit with a titaniu diaphrag , and the

constant directivity horn (40° horizontal by 40° vertical),

the co bination of which provides unifor distribution of

pleasant sound.

Apiton plywood enclosure (18 , 0.7" in thickness)

finished with rugged epoxy coating ensures high durability

and excellent acoustic characteristics. Also, Neutrik's

NL4MPR input connectors located on both sides of the

speaker facilitate a cascade speaker connection.

1.High power handling capability and heavy-duty

construction.

2. Bia plification syste .

3. Highly efficient 30c (12') woofer e ploying a 200

(7.9") dia eter agnet.

4. Large, high-power driver with a titaniu diaphrag for

high-range coverage. A constant directivity horn (40°

horizontal by 40° vertical) ensures a unifor sound

dispersion pattern.

5. Apiton plywood enclosure (18 , 0.7" in thickness)

with rugged epoxy coating.

6. Two Neutrik NL4MPR input connectors.

TOA Corporation

INPUT CONNECTORS

Two Neutrik NL4MPR connectors are provided on both sides of the speaker. Because they are internally

parallel-connected, you can use either of the two.

Each contact of the connector is wired as shown in the following table.

The LOW input i pedance is 8 oh s for both the SR-M1 and SR-M2. (In the SR-M2, two 16 oh woofers

are internally parallel-connected at the LOW input.)

Applicable cable connector: Neutrik NL4FC

CONNECTION

Basic Connection B ock Diagram

Power amp ifier types to use

With the bia plification syste being e ployed, dual-channel power a plifiers ust be used to drive the

SR-M1 or SR-M2. Be sure to use a 300W (at 8 oh load) or ore powerful a plifier per channel. If

s aller-power a plifiers are used, the speaker's original perfor ance will suffer.

Para e connection of two speakers

Two speakers can be connected in parallel using the input connectors on both sides of each speaker, as

shown below. To connect two speakers in parallel, the a plifier output power ust be 450W or ore (at 4

oh load).

Parallel-connection of two SR-M1

Parallel-connection of two SR-M2

Contact nu ber

1 +

1 -

2 +

2 -

SR-M1/SR-M2

LOW +

LOW -

HIGH

Mixer/

Preamp ifier

INPUT 1

Mixer/

Preamp ifier

INPUT 2

(CH1)

(CH2)

LOW SENSE 1

LOW OUT 1

HIGH OUT 1

HIGH SENSE 1

LOW SENSE 2

LOW OUT 2

HIGH OUT 2

HIGH SENSE 2

AC-M1

POWER AMP

LOW

HIGH

LOW

HIGH

SR-M1 or SR-M2

Connection precaution

Neither the SR-M1 or SR-M2 has an internal circuit to protect a high-range driver. If the LOW signal is input

to the high-range driver due to wrong connection, the driver ay be da aged. To avoid this, carefully check

for proper connection before use.

INSTALLATION

The SR-M1 and SR-M2 are designed for installation on flat floor.

SR-M1

SR-M2

The AC-M1 electronic control unit has an internal equalizer to ensure the opti u sound output when the

speaker is installed as shown above. In addition, the control unit is equipped with the FC (Floor Correction)

switch to ini ize the influence of reflected waves produced when the speaker is directly installed on the

floor. (For ore details, refer to the AC-M1 Instruction Manual.) Usually, set the FC switch to IN.

AC-M1

e ectronic

contro

unit

(optiona )

The optional AC-M1 control unit features the following functions for the best possible sound reproduction

fro the SR-M1 and SR-M2 speakers:

Channel divider

Phase atching /ti e align ent

Equalizer

Li iter

Floor correction

CHARACTERISTIC

DIAGRAMS

(1/3

Octave

Pink

Noise)

SR-M1 (1/4 W input/1 m, at 2 kHz of HIGH frequency)

SR-M2 (1/4 W input/1 m, at 2 kHz of HIGH frequency)

SPECIFICATIONS

Mode

Enclosure

Speaker

Low Frequency

High Frequency

No inal I pedance

Sensitivity

Frequency Response

Crossover Frequency

Power Handling

Capacity

Low Frequency

High Frequency

Input Connector

Enclosure Material

Weight

Di ensions (W

Finish

Accessories

SR-M1

SR-M2

Bass reflex type

30 c (12") dia. cone speaker × 1

30 c (12") dia. cone speakers x 2

CD horn (40° horizontal × 40° vertical) fitted with co pression driver

Low frequency : 8

High frequency : 16

Low frequency : 99 dB (1W/1 ) (*1)

High frequency : 109 dB (1W/1 ) (*2)

70 ~ 20,000 Hz (when AC-M1 is used)

Low frequency : 82, parallel-connection)

High frequency : 1

Low frequency : 102 (1W/1 ) dB (*1)

High frequency : 109 (1W/1 ) dB (*2)

45 ~ 20,000 Hz (when AC-M1 is used)

1 kHz (when AC-M1 is used)

Continuous pink noise : 120 W RMS (*3)

Continuous progra : 360 W RMS

Continuous pink noise : 80 W RMS (*4)

Continuous progra : 240 W RMS

Continuous pink noise : 240 W RMS (*3)

Continuous progra : 720 W RMS

Continuous pink noise : 80 W RMS (*4)

Continuous progra : 240 W RMS

Neutrik NL4MPR × 2

APITON plywood (thickness: 18 or 0.7")

Approx. 32 kg (71 Ib.)

390 × 439 × 662 (15.4" × 17.3" × 26.1 ")

Approx. 56kg (123lb.)

902 x 346 x 618 (35.5 " × 13.6 " × 24.3")

Enclosure : Epoxy paint (black)

Front grille : Acrylic paint (black)

Instruction anual ×1

Warranty card ×1

*1 Band Li ited (200 to 1,000 Hz) Pink noise signal

*2 Band Li ited (1,000 to 5,000 Hz) Pink noise signal

*3 Band Li ited (50 to 1,000 Hz) Pink noise signal (24 hours)

*4 Band Li ited (1,000 to 20,000 Hz) Pink noise signal (24 hours)

* Specifications are subject to change without notice.

APPEARANCE

SR-M1

SR-M2

TOA Corporation

PRINTED IN JAPAN

133-01-365-80

(16 ×

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