Toa PJ-304 User Manual

1. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all
the instructions in this section for correct and safe
operation.

• Be sure to follow all the precautionary instructions in
this section, which contain important warnings and/or
cautions regarding safety.

• After reading, keep this manual handy for future
reference.

• Install the unit only in a location that can structurally
support the weight of the unit and the mounting bracket.
Doing otherwise may result in the unit falling down and
causing personal injury and/or property damage.

• Do not use other methods than specified to mount the
bracket. Extreme force is applied to the unit and the unit
could fall off, possibly resulting in personal injuries.

• Tighten all screws securely. If any is loosely fixed, this
may cause the unit to fall, resulting in personal injury.

• To avoid electric shocks, be sure to switch off the
amplifier's power when connecting speakers.

• Do not operate the unit for an extended period of time
with the sound distorting. This is an indication of a
malfunction, which in turn can cause heat to generate
and result in a fire.

• Do not hang down from the unit as this may cause it to
fall down or drop, resulting in personal injury and/or
property damage.

The PJ-64 and PJ-304 are projection speakers designed
for ceiling and wall installations. Considered in
architectural design, they can blend in with lighting
equipment.
The supplied swivel bracket allows for flexible speaker
angle adjustment.
The PJ-64 is driven on high-impedance (100 V and 70 V)
line, while the PJ-304 is driven on both high-impedance
(100 V and 70 V) and low-impedance (8 Ω) lines.
The input power (impedance) can be easily changed at
the upper side of the speaker.
The speakers are easy to repaint so as to meet a wide
range of design needs

2. GENERAL DESCRIPTION

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

3. SPECIFICATIONS

INSTALLATION MANUAL

PROJECTION SPEAKERS

PJ-64
PJ-304

Thank you for purchasing TOA's Projection Speakers.
Please carefully follow the instructions in this manual to
ensure long, trouble-free use of your equipment.

WARNING

Indicates a potentially hazardous situation which, if
mishandled, could result in death or serious
personal injury.

CAUTION

Indicates a potentially hazardous situation which, if
mishandled, could result in moderate or minor
personal injury, and/or property damage.

PJ-64 PJ-304

Bass-reflex type

6 W (100 V line), 3 W (70 V line) 30 W (100 V, 70 V line, 8 Ω)

–

8 Ω

1.7 kΩ (6 W), 3.3 kΩ (3 W), 330 Ω (30 W), 500 Ω (20 W), 670 Ω (15 W),
10 kΩ (1 W) 1 kΩ (10 W), 2 kΩ (5 W)

1.7 kΩ (3 W), 3.3 kΩ (1.5 W), 170 Ω (30 W), 250 Ω (20 W), 330 Ω (15 W),
10 kΩ (0.5 W) 500 Ω (10 W), 1 kΩ (5 W)

90 dB (1 W, 1 m) 91 dB (1 W, 1 m)

100 – 18,000 Hz (at 20 dB below peak) 70 – 20,000 Hz (at 20 dB below peak)

12 cm (5") cone type 12 cm (5") cone type + balanced dome-tweeter

2-core cabtyre cord with diameter of 6 mm (0.24")

Enclosure: HIPS resin, off white (RAL 9010 or equivalent color)
Grille:

Surface-treated steel plate net, off white (RAL 9010 or equivalent color), paint

ø186 x 251 (h) mm (ø7.32" x 9.88")

1.5 kg (3.31 lb) 2.1 kg (4.63 lb)

Swivel bracket ............ 1, Tapping screw 4 x 16 ............ 3

Model No.
Enclosure
Rated Input
Rated

Low

Impedance

100 V line

70 V line

Sensitivity

(500 – 5,000 Hz, pink noise)

Frequency Response
Speaker Component
Speaker Cord
Finish

Dimensions (unit only)
Weight (unit only)
Accessories

4. WIRING DIAGRAMS

4.1. PJ-64

4.2. PJ-304

The input power (impedance) is factory-preset to 6 W
(1.7 kΩ) for 100 V line and 3 W (1.7 kΩ) for 70 V line.
When changing this setting, use a standard screwdriver
to rotate the rotary switch on the upper side of the
speaker to the desired position

The input power (impedance) is factory-preset to 30 W
(330 Ω) for 100 V line.
When changing this setting, use a standard screwdriver
to rotate the rotary switches on the upper side of the
speaker to the desired position.

(1) When operating at high impedance (100 V and 70 V lines);

Set the rotary switch of "LINE VOL." to "100 V" or "70 V" and that of "INPUT" to the input power to be used.

(2) When operating at low impedance;

Set both rotary switches of "LINE VOL" and "INPUT" to 8 Ω.

Important

Be sure to follow the instructions below. Failure to do so may cause damage to the speaker.

• Switch off the amplifier's power when changing the input power.

• Never make 8 Ω connection in a 100 V or 70 V line system, as excessive input power is applied to the speaker,

possibly resulting in damage. (PJ-304 only)

5. INPUT POWER (IMPEDANCE) CHANGE

5.2. PJ-304

5.1. PJ-64

Impedance 1.7 kΩ 3.3 kΩ 10 kΩ

100 V line 6 W 3 W 1 W

70 V line 3 W 1.5 W 0.5 W

Input power 30 W 20 W 15 W 10 W 5 W

100 V line 330 Ω 500 Ω 670 Ω 1 kΩ 2 kΩ

70 V line 170 Ω 250 Ω 330 Ω 500 Ω 1 kΩ

Rotary switch

OFF

HOT

COM

OFF

OFF

Matching
transformer

10 kΩ

3.3 kΩ

1.7 kΩ

COM

(Factory-preset wiring)

8 Ω

0

Rotary switch 1

8 Ω

HOT

COM

2 kΩ
1 kΩ

670 Ω
500 Ω

330 Ω

COM

Matching
transformer

16 Ω

0

8 Ω

0

Rotary switch 2

8 Ω

OFF

OFF
70 V

OFF

100 V

SP1

8 Ω

0

Network

(Factory-preset wiring)

SP2

Note

Shown above is an example when the input power is
set to 3 W on 100 V line and 1.5 W on 70 V line.

Note

Shown above is an example when the input power is
set to 20 W on 100 V line.