Vintage Audio Online

Yamaha NS-250E 'Ear' Speakers

A rare, vintage, open-baffle design from Yamaha.   Though to date from around 1970.  We found the specs below, but information on these is hard to fine.  Please let us know if you have any more.

Model: NS 250E

Impedance: 8 0hm
periodic resonance: 40 cycles per second.
Frequency range: 40-18000Hz,
assembly: 38x51 cm woofer, 6 cm tweeter
59x42x19cm, 10kg

More pictures after the break.

[...]

Yamaha CR-1020 Receiver (1977-1979)

Rated 75 watts RMS per channel into 8 ohms and 90 watts RMS into 4 ohms.

[...]

Yamaha CR-820 Receiver - 1977

Power Output: 55 watts per channel RMS into 8 ohms.classicaudio.com
Harmonic Distortion: 0.02% at 25 Watts
Intermodulation Distortion: 0.05% at 50 Wattsclass

[...]