TOA cs-304u Mode D'Emploi

Printed in Indonesia
5 3 3 - 0 6 - 1 1 2 - 9 0

Input impedance is factory-preset to 330 

Ω. 

To change the impedance, change the rear
panel-mounted rotary switch position to the
desired impedance (wattage) using a standard
screwdriver.

Notes
• This speaker is designed to operate on a 70

V or 100 V line. Do not connect it to the
amplifier's low impedance line.

• No sound is output when the switch is set to

the OFF position.

Caution
Never set the switch to "–" position for 100 V
line operation, as doing so may result in
damage to the speaker.

* Impedance for 70 V line

Note
The design and specifications are subject to
change without notice for improvement. 

Ω

Ω

Ω

Ω

Ω

Ω

Ω

Line Voltage

Imp.

70 V

100 V

30 W

–

170 

Ω

Ω

10 W

20 W

500 

Ω

5 W

10 W

1 k

Ω

← Factory-preset values

Speaker Component 

12 cm cone speaker

Rated Input

30 W

Impedance

(170 

Ω)*, 330 Ω, 500 Ω, 1 kΩ

Frequency Response

120 – 15,000 Hz

Sensitivity

98 dB (1 W, 1 m)

Finish

Body

ABS resin, off-white, paint

Bracket

Stainless steel

Net

Aluminum, gray, paint

Dimensions

366 (w) x 230 (h) x 272 (d) mm

Weight

3.1 kg

Wa

ll surface

Ceiling

 surface

• Be sure to direct the speaker down

towards the ground. Otherwise, rain
floods the speaker, causing its failure.

• No mounting hardware such as bolts

and nuts is supplied with the speaker.
Use commercial mounting hardware
appropriate for the installation
environment. 

• Please install only with either flexible

conduit or flexible wiring. 

Make the connections using marrets (wire nuts)
inside a UL Listed junction box.

Note
This product shall be installed in accordance with
the National Electrical Code, ANSI/NFPA 70. 

UL Listed Junction Box

(–)

(–)

(+)

(+)

Marrets (wire nuts)

From Speaker

From Amplifier