TOA pj-304 Specification Guide

PJ-304
Projection Speaker System

The PJ-304 are bass-reflex HIPS resin enclosure 5" (12cm) cone-
type projection speakers intended for ceiling and wall installation. The 
PJ-304 also includes a balanced dome tweeter. They have an 
outstandingly stylish design that is inspired by the finest lighting 
fixtures, allowing them to be harmoniously installed with lighting 
equipment. They are ideally suited for such applications as BGM and 
announcements at airports, subway stations, art museums and 
shopping malls. The speakers are easy to repaint, extending the range 
of design needs they can meet. A supplied swivel bracket accessory 
allows for flexible speaker angle adjustment. 
 PJ-304 is driven on a high- and low 

impedance (8) line.

Input impedance is adjustable with rotary switch 

on the upper side

of the speaker.

• Stylish and outstanding design inspired by the finest lighting fixtures
• Flexible speaker direction adjustment with accessory brackets
• Repaintable
• Input impedance easily changeable
• Ideally suited for BGM and announcements

120˚

ø60 (ø2.36”)

ø72 (ø2.83”)

30.5 

(1.2”)

251 (

9

.8

8

”)

333 (

1

3

.11”)

3

6

 (1.42”)

369 (

1

4

.53”)

3–ø6.5 (ø0.26”)

ø186 (ø7.32”)

(Horizontal)

360˚

89˚

70˚

Enclosure: 

Bass-reflex type

Rated Input: 

6W (100V line), 3W (70V line) 

100V line: 1.7k

Ω (6W), 3.3kΩ (3W), 10 kΩ(1W)

70V line: 1.7k

Ω (3W), 3.3kΩ (1.5W), 10 kΩ (0.5W)

Sensitivity (1W, 1m):  90dB (500 – 5,000Hz, pink noise)

Frequency Response: 100 – 18,000Hz (peak –20dB)
Speaker Component: 5" (12cm) cone-type

2-core cabtyre cord 60cm (1.97ft) with diameter of 
6mm (0.24")

Finish: 

Enclosure: HIPS resin, off-white (RAL 9010 or 
equivalent colour)/
Grille: Surface-treated steel plate net, off-white 
(RAL 9010 or equivalent colour), paint

Dimensions: 

ø186 

× 369(H) mm (ø7.32" × 14.33")

Weight: 

1.5kg (3.31 lb)  (unit only)

Accessory: 

Swivel bracket 

× 1, 

Speaker mounting screw (4 

× 16) × 3

Enclosure: 

Bass-reflex type

Rated Input: 

30W (100V , 70V line, 8

Ω) 

Rated Impedance: 

100V line: 330

Ω (30W), 500Ω (20W), 670Ω (15W) , 

1k

Ω (10W), 2kΩ (5W)

70V line: 170

Ω (30W), 250Ω (20W), 330Ω (15W), 

500

Ω (10W), 1 kΩ (5W)

8

Ω (30W)

Sensitivity (1W, 1m):  91dB (500 – 5,000Hz, pink noise)

Frequency Response: 70 – 20,000Hz (peak –20dB)

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

2-core cabtyre cord 60cm (1.97ft) with diameter of 
6mm (0.24")

Finish: 

Enclosure: HIPS resin, off-white (RAL 9010 or 
equivalent colour)
Grille: Surface-treated steel plate net, off-white 
(RAL 9010 or equivalent colour), paint

Dimensions: 

ø186 

× 369(H) mm (ø7.32" × 14.33")

Weight: 

2.1kg (4.63 lb) (unit only)

Accessory: 

Swivel bracket 

× 1, 

Speaker mounting screw (4 

× 16) × 3

(Factory–preset wiring)

Note: Never connect the 8 

Ω terminal to the 100 V or 70 V line.

Rotary switch 1

HOT

Matching

transformer

Network

8

Ω

2k

Ω

16

Ω

8

Ω

OFF

OFF

OFF

70V

100V

1k

Ω

670

Ω

0

Ω

500

Ω

8

Ω

330

Ω

COM

0

Ω

COM

Rotary switch 2

(Factory–preset wiring)

Rotary switch

HOT

Matching

transformer

OFF

OFF

OFF

10k

Ω

3.3k

Ω

8

Ω

1.7k

Ω

COM

0

COM