Country of Manufacture:Japan
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:( 3dB): 7½ ips: 40Hz to 15 kHz
Wow and Flutter:less than 0.18% at 7½ ips, 0.25% at 3¾ ips & 0.35% at 1ips
Signal-to-Noise Ratio:better than 50 dB at 7½ ips
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The 1720 was available in
two versions, suffixed “W” and “L”. These suffixes
referred to the type of case, wooden (W) or leather-finish over wood (L).
It was a quarter-track stereo recorder with a built-in solid state 6
watt power amplifier (3 watts per channel) and two 7 x 5″ speakers.
The 1720 could handle reels of up to 7″ and the built-in reel retainers
meant that the recorder could be used in a vertical position.
Three speeds were available. 7½ , 3¾ & 1ips,
selectable via the two-speed motor in conjunction with a removable capstan
Additional images of this recorder are supplied on the Get Reel Contemporary