Sold as a pair (x2) of speakers in good condition, used in studio. An NS10 variant. Photo shows one with the cover off.

Specs:

Manufacturer: Yamaha

Model: NS-044

Type: Loudspeaker

Years of manufacture: 1980 - 1981

Made in: Japan

Color: Black

Dimensions: 215 x 382 x 194 mm (WxHxD)

Weight: 4.7 kg

Technical Data

Type: 2-way closed, compact speaker

Chassis:

woofer 180 mm cone

midrange driver

Tweeter 90 mm cone

Power handling:

Continuous power: 20 W

Total power: 40 W

Efficiency: 89 dB

Frequency response: 60 - 20'000 Hz

Transitional ranges: 2'000 Hz

Impedance: 8 Ohm

Special Features

Level control for tweeter" (Hifi Wiki)