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Impedance change, Specifications, Installation – Toa CS-154U User Manual

Page 2: Connection

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5. IMPEDANCE CHANGE

The input impedance is factory-preset to 670 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.

8. SPECIFICATIONS

* Impedance for 70 V line

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

10W 1kΩ

15W 670Ω

OFF

OFF

2.5W 2kΩ

70V LINE

100V LINE

5W 2kΩ

OFF

OFF

15W 330Ω

7.5W 670Ω

5W 1kΩ

Line Voltage

Imp.

70 V

100 V

15 W

330 Ω

7.5 W 15 W

670 Ω

5 W

10 W

1 kΩ

2.5 W

5 W

2 kΩ

Speaker Component

12 cm cone speaker

Rated Input

15 W

Impedance

(330 Ω)*, 670 Ω, 1 kΩ, 2 kΩ

Frequency Response

150 – 15,000 Hz

Sensitivity

97 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

2.8 kg

Ceiling surface

Wa

ll 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.

7. INSTALLATION

[Mounting on the wall]

[Mounting under the eaves

or on the ceiling]

6. CONNECTION

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

(–)

(–)

(+)

(+)

Factory-preset values

533-06-111-6A

URL: http://www.toa.jp/