Toa SM-25A Instruction Manual

Instruction Manual

PROFESSIONAL SOUND SPEAKER SYSTEM

General Description

The SM-25A is a small monitor speaker system with a built­in power amplifier (with compressor circuit) of 25W, and
incorporates a high efficient, durable 2-way speaker of 12
cm (5-inch) and 5cm (2-inch) diameter. The built-in power
amplifier has a continuously variable SLIDE VOLUME
control and a BRIDGE connector is provided to facilitate
stacking two or more SM-25A. A headphones jack permits
monitoring through headphones, which masks an ambient
noise. An enclosure is made of cast aluminum, so that it is
rugged and can withstand rough use. With an optional
bracket, the SM-25A is mountable on the microphone

stand, microphone stand shaft and wall.

How To Connect

In case of using

one SM-25A

from
Pre

Amp.

Tip = Hot (+)
Sleeve = Com. (–)

In case of using two 25A's in parallel

SM-25A

Tip = Hot (+)
Sleeve = Com. (–)

from

Pre

Amp.

Fig. 1

ANGLE
ADJUSTER

Fig. 2

HEIGHT
ADJUSTER

Fig. 3

Plate

1 When carr ying out the installation of

Fig. 4 first take off the bracket No.2
and install the bracket No.1 on the

wall

with

the

wooden

Fig.

1

screws.

TOA Corporation

Bracket No.1

4

Mounting holes
to the wall

Microphone stand shaft

2

Bracket

No.2 will
by 90 degrees when these mounting
holes are used.

Bracket No.2

2

(1.10" MAX)

change

in

position

General Specifications

Enclosure
Speakers

Sound Pressure Level

Frequency Response

Amplifier

Finish

Weight
Dimensions

Characteristic Diagrams

Frequency Response (1W/1m)

Sealed type

2 way speaker of 12cm (5-inch) and 5cm (2-inch)
88 dB (1W/1m)
90 Hz~20kHz
Power

Power consumption

Rated Output Power

Input Impedance
Input sensitivity

Input Terminal

Bridge Terminal

Front Panel

Body
Approx. 13.9 pounds ( 6 . 3 k g )

12.8

(W) × 6.7 (H) ×

325 (W) × 170 (H) ×

: AC mains
: 30W
: 25W

:

8k-ohm,

: –20dB or +4dB, switchable (0dB = 0.775V RMS)

: Phone jack
: Phone jack
: Metal Punching Net

: Cast Aluminum (Black)

5.5 (D) inches

140 (D) mm

balanced

40k-ohm, balanced (at +4dB set)

( a t -20dB s e t)

Input signals are fed through an input terminal.

Power Amp Compressor

Harmonic Distortion (1W/1m)

Polar Response

Horizontal
Dispersion

500 Hz

1kHz
2kHz

4kHz

Directional Frequency Response (1W/1m)

Vertical
Dispersion

500Hz

1kHz
2kHz
4kHz

TOA Corporation

KOBE, JAPAN

Printed in Japan

133-02-616-8A