Country of Manufacture:
Release dates:1957 - 1960
Speeds: 3 3/4, 7 1/2, 15
Max Reel Size("): 7"
Number of heads: 4
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 15 ips: 40Hz - 16kHz
Wow and Flutter:0.1% at 15 ips. 0.12% at 7½ ips. 0.14% at 3¾ ips
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The Collaro Mk IV “Tape
Transcriptor” was a very popular unit with both hi-fi enthusiasts
and small manufacturers alike. The Elon Tape Development Company of Herne
Hill in London was one such manufacturer, and apart from this model, the
JC20, I haven’t been able to discover any other listings of recorders
they may have ‘developed’.
The JC20 was a three-speed (3¾ & 7½ & 15 ips), two
track unit with two motors and two sets of heads, capable of recording
and playing back in both directions.
Note the primitive tape usage indicator, consisting of a wire ‘feeler’
on the take-up reel operating the large gradiated scale above the head
Rewind speed: approximately 2 minutes for 2400ft tape / Dimensions: 16½ x 16 x 9¾” (419 x 406 x 248 mm) / Weight: 43 lbs (19.5 kg) / half-track mono