Actua pictures. One or more. Produced in the Soviet (Russian plant) "Dynamic" in the city of Gagarin. 

For use in outdoor remote speakers for indoor use.

Never used. Same produse date - February of 1993 

Main technical characteristics:

Frequency range: 100-1,5000 Hz

Sensitivity in the range of 315-3000 Hz: 91 dB

Irregularity of the frequency response: 14 dB

Harmonic coefficient at frequencies:

200 - 630 Hz: 5%

800 Hz: 4%

1000 - 4000 Hz: 3%

Resistance: 4 Ohms

Power:

working: 0.9 W

passport: 8 W

long term: 20 W

short-term: 35 W

Main resonance: 100 (± 25 Hz)

Total Q: 2 (± 0.8)

Dimensions: Ø160х54 mm

Weight: 0.4 kg

Electrodynamic type loudspeaker head, broadband, round, with unshielded magnetic circuit. The shasis is made of pressed steel.

Magnetic circuit:

Ring ferrite magnet brand M25BA170 size K56x24x8 mm;

Core diameter of 15 mm;

Upper flange with a hole diameter of 16.7 mm;

Radial width of the air gap 0,85;

Air gap height 3 mm;

Induction in the gap of 0.8 Tesla.