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URL:  https://www.toa.jp/

133-01-00247-00

5. INSTALLATION

 Step 1.  Make a 150 ±3 mm (5.91" ±0.12") diameter hole in 

the ceiling. 

Input connector

2

3

Ceiling

Speaker spring

Suspension bolt

Spring catcher

25 mm (0.98") max.

Cloth dust cover 

(with the input connector exposed)

Bent position

Mounting bracket

Thumb screw

Ceiling clamp

Note

Max. 30 mm (1.18") 

allowable with the 

ceiling clamp bent 

as designated above.

 Step 2.  Place the mounting bracket in the hole and secure 

it with the thumb screws in the two ceiling clamps. 

Note

A suspension bolt may be used instead for fixing 

the  mounting bracket.

 Step 3.  Hook one speaker spring (V-shaped spring) in the 

spring catcher of the bracket. 

 Step 4.  Make wiring.

  4-1.  Insert the lead-in cables (cables from the amplifier) 

and  lead-out  cables  (cables  to  other  speakers) 

into the input connector.

[When making a bridge connection]

Input connector

Matching transformer

Speaker cable

(From the amplifier)

Speaker cable 

(To the next speaker)

Input connector

From 

the amplifier

To 

the next speaker

COM (–)

HOT (+)

9 mm  (0.35")

Applicable cable
  Solid wire:  ø0.8 – ø1.6 mm

                     (equivalent to AWG 20 – 14)

  4-2.  Change the input impedance as needed. 

The speaker's input is factory-preset to 1.7 kΩ. 

When changing the input impedance, detach the 

black wire connected to the matching transformer, 

and reinsert it into the desired input tap referring 

to the table below.

 Step 5.  Hook another speaker spring in another catcher. 

Then,  press  the  speaker  assembly  into  the  

mounting bracket. Force of the springs will keep 

the speaker in place.

3.3kΩ

1.7kΩ

COM

6.7kΩ

13kΩ

Matching transformer 

HOT (Black)

COM (White)

Impedance 1.7 kΩ 3.3 kΩ 6.7 kΩ 13 kΩ

100 V line

6 W

3 W

1.5 W

0.8 W

70 V line

3 W

1.5 W

0.8 W

0.4 W

Traceability Information for Europe

Manufacturer:

TOA Corporation

7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan

Authorized representative:

TOA Electronics Europe GmbH

Suederstrasse 282, 20537 Hamburg, Germany

View with dust cover removed

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