Ceiling speaker | 70/100V | 6–10W | 92dB | steel housing | Fire Dome protection | 6.5" speaker

Technical Specifications

Manufacturer: DSPPA
Model: DSP904
Power: 1.5 / 3 / 6 / 10 W
Input: 70V / 100V line
Speaker size: 6.5"
Sensitivity: 92 ± 2 dB
Frequency range: 100 Hz – 16 kHz
Housing: High-grade steel
Fire Dome: Yes, integrated
Cable protection: Leaded wire case (fire-resistant)
Mounting: Spring clip
Housing diameter: Ø ~200–210 mm
Cut-out diameter: Ø ~165–175 mm
Depth (with Fire Dome): ~110–125 mm

Features

Fire Dome protection – steel fire-resistant enclosure.

Integrated 70V/100V transformer – professional line system.

6.5" paper cone – natural and clear voice reproduction.

1.5–10 W power settings – adjustable for different zones.

92 ± 2 dB sensitivity – good efficiency and clarity.

Fire-resistant cable channel (leaded wire case).

Steel housing and grille – durable and reliable.

Spring-clip mounting – fast installation.

Applications

For home users: Suitable for stairwells, garages, corridors, basements – ideal where safety and voice clarity for announcements are important.
For engineers/designers: Fire-resistant construction – ideal for buildings with strict fire-safety requirements; stable operation in 100V line systems; suitable for evacuation and public announcement systems.
For electricians/installers: Fast installation with spring clips; compact dimensions – fits easily into tight ceiling spaces; robust metal/fire-resistant housing.

Pros

Fire Dome protection increases safety.

6.5" size – better audio performance than 4.5" models.

High 92 dB sensitivity.

Strong steel enclosure.

Versatile 1.5–10 W power selection.

Cons

Designed more for voice than for music (limited bass).

Spring clip – fast but not as premium as rotating brackets.