DU 31EN Flush / Wall Mount Speaker
DU 31EN is a two-way flush mount speaker with flexible design suitable for paging and background music for several type of installations. It is equipped with a 4" woofer and a 1" tweeter. It features a line transformer for the connection to 100 / 70 V constant voltage lines, allowing to select among 3 different power levels. The rear cover A 1331 (not included) makes it suitable also for wall or surface installation.
Features
- 4" woofer and 1" dome tweeter.
- Power selectable (100 V): 8 W - 4 W - 2 W.
- 82 dB sensitivity.
- Colour white RAL 9002.
- Flameproof plastic body, steel grille.
- In/out ceramic terminal block.
- Thermal fuse protection.
Specifications
Acoustical specifications
| Frequency Response (-10dB) |
100 Hz - 17000 Hz |
| Max SPL @ 1m |
91 dB |
| Max SPL @ 4m |
79 dB |
| Coverage angle |
180° |
| System Sensitivity |
82 dB |
| System Sensitivity 1W @ 4m |
70 dB |
Power section
| Power Handling |
8 W |
| Peak Power Handling |
32 W PEAK |
| Protections |
Thermal fuse |
| Recommended Amplifiers |
DXT 3000, DXT 4000, DXT 7000 |
Transducers
| Dome Tweeter |
1 x 1.0'' |
| Woofer |
1 x 4.0'' |
Input/Output section
| Input connectors |
Ceramic screw terminals |
| Output connectors |
Ceramic screw terminals |
| Constant Voltage Transformer |
100 V |
| Power selection 1 |
8 W - 1250 ohm |
| Power selection 2 |
4 W - 2500 ohm |
| Power selection 3 |
2 W - 5000 ohm |
Standard compliance
| IP protection grade |
IP 21C |
| Safety agency |
CE compliant |
| EN54-24 certified |
Yes |
| CPR number |
0068-CPR-234/2025 |
Physical specifications
| Cabinet/Case Material |
Plastic |
| Grille |
Steel |
| Color |
White - RAL 9002 |
Size / Weight
| Height |
175 mm / 6.89 inches |
| Width |
151 mm / 5.94 inches |
| Depth |
56 mm / 2.2 inches |
| Recessed Depth |
38 mm / 1.5 inches |
| Weight |
0.6 kg / 1.32 lbs |
Shipping information
| Package Height |
260 mm / 10.24 inches |
| Package Width |
100 mm / 3.94 inches |
| Package Depth |
175 mm / 6.89 inches |
| Package Weight |
0.89 kg / 1.96 lbs |
