Toa SM-25A User manual

TOA PROFESSIONAL SOUND SYSTEMS
Powered Monitor Speaker
SM-25A
GENERAL DESCRIPTION
The SM-25A is designed as a “powered” personal monitor
speaker system, with a built-in 25 watts power amplifier, and one
each of a 2-inch tweeter and 5-inch woofer. An automatic
compression circuit provides maximum headroom while
insuring the reliability of the speaker components. The SM-25A
features a slide volume control on the front panel for
conveniently setting output level, a headphone monitoring jack,
and bridging connectors for daisy chaining additional speaker
systems. A unique bracket allows the SM-25A to be mounted on
walls, mic stands, and mic stand and cymbal stand shafts. The
cast aluminum enclosure is rugged enough to withstand even
the roughest handling. The SM-25A is a unique speaker
system, featuring high performance, flexibility, and reliability in a
rugged and compact package.

FEATURES 1. Built-in 25 watt power amplifier
2. Automatic compression circuit
3. Slide volume control
4. Head phone monitoring jack
5. Unique bracket
SPECIFICATIONS Enclosure:
Speakers:
5cm (2")
Sound Pressure Level: 88 dB (1W/1m)
Frequency Response:
90Hz—20kHz
Amplifier:
Power: AC mains
Powerconsumption: 30W
RatedOutputPower: 25W
Input Impedance:
8k-ohm, balanced (at -20dB set)
40k-ohm,balanced(at
+4dB set)
Sealedtype
2 way speaker of 12 cm (5") and
Input sensitivity:
Input Terminal:
BridgeTerminal:
Finish:
Front Panel:
Body:
Weight:
Dimensions:
-20dB or
+40dB, switchable
(0dB=0.775V RMS)
Phone jack
Phone jack
Metal Punching Net
Cast Aluminum (Black)
(6.3kg) 13.9 Ibs.
325(W)X170(H)X140(D) mm
12.8"(W)X6.7"(H)X5.5"(D)
*Specifications are subject to change without notice.
ARCHITECT’S AND
The speaker system shall be a “powered” personal monitor
ENGINEER’S
speaker system, with a built-in 25 watts power amplifier, and
one each of a 2-inch (5 cm) tweeter and 5-inch (12 cm)
SPECIFICATIONS
woofer. An automatic compression circuit shall provide
maximum headroom while insuring the reliability of the
speakercomponents.Thespeakersystemshallprovidefora
slide volume control on the front panel for conveniently
setting output level, a headphone monitoring jack, and
bridge connectors for daisy chaining additional speaker
systems. A unique bracket shall allow the speaker system to
be mounted on walls, mic stands, and mic stand and cymbal
stand shafts. The cast aluminum enclosure is rugged
enough to withstand even the roughest handling. In addition
to the various specifications stated above, the speaker
system shall meet the following overall performance and
specifications criteria: sound pressure level of 88dB
(1W/1m);frequencyresponseof90Hzto20kHz;ratedoutput
power of 25W; front grill of black metal punching net;
dimensions of 6.7" (170 mm) high, 12.8" (325 mm) wide, 5.5"
(140mm) deep; weightof13.9Ibs(6.3kg).Thespeaker
system shall be a TOA Model SM-25A.
CHARACTERISTIC
FREQUENCY RESPONSE (1W/1m)
DIAGRAMS
Frequency(Hz)
DIRECTIONAL FREQUENCY RESPONSE (1W/1m)
POLAR RESPONSE
Frequency(Hz)
HORIZONTAL
SCALE IS 10dB PER DIVISION.
500Hz
1kHz
2kHz
4kHz
HARMONICDISTORTION(1W/1m)
POWER AMP COMPRESSOR
Frequency(Hz)
Input Voltage (V)
VERTICAL
DISPERSION
SCALE IS 10dB PER DIVISION.
500Hz
1kHz
2kHz
4kHz
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