3. GENERAL DESCRIPTION
Integrated with a resin panel and speaker frame,
the PC-648R and PC-658R are the ceiling mount
speakers with a metal grille attached.
They feature spring clamp mechanism for easy
speaker mounting to the ceiling.
The input impedance can be easily changed by
changing the tap position of the transformer.
4. INSTALLATION
Step 1. Using the supplied paper pattern as a guide,
open a mounting hole of the dimension
speciedbelowintheceiling.
Ceiling
5 – 25 mm
(0.2" – 0.98")
øA
Model No. øA
PC-648R ø145 ±5 mm (ø5.71" ±0.2")
PC-658R ø170 ±5 mm (ø6.69" ±0.2")
Step 2. Hook the speaker mounting spring into the
mounting hole in the ceiling.
Ceiling
Speaker mounting
spring
The figure shows PC-648R.
Step 3. Make wiring.
3-1. Connect the speaker cable (from the speaker)
referringtothegurebelow.
Connect its HOT line to the black lead wire,
and COM line to the white one.
The figure shows PC-648R.
Matching
transformer
COM (White)
HOT (Black)
3-2. Change the input impedance as needed.
Thespeaker’sinputisfactory-presetto1.7kΩ.
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.
3.3 kΩ
10 kΩ
1.7 kΩ
HOT (Black)
COM (White)
Impedance 1.7kΩ 3.3kΩ 10kΩ
100 V line 6 W 3 W 1 W
70 V line 3 W 1.5 W 0.5 W
Step 4. Push the panel surface into the mounting
hole.
5. WIRING DIAGRAMS
8 Ω
10 kΩ
3.3 kΩ
1.7 kΩ*
* Factory-preset
0
COM (white)
HOT (black)
Matching
transformer
COM
URL: https://www.toa.jp/
133-01-00081-01
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
Traceability Information for UK
Manufacturer:
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan
Authorized representative:
TOA CORPORATION (UK) LIMITED
Unit 7&8, The Axis Centre, Cleeve Road, Leatherhead,
Surrey, KT22 7RD, United Kingdom
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