Country of Manufacture:United Kingdom
Release dates: -
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 10.5"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
# Motors: 1
Frequency Response:(all 3 dB): 15 ips: 50Hz - 7kHz; 7½ ips: 50Hz - 5kHz
Wow and Flutter:15 ips: better than 0.2%; 7½ ips: better than 0.25%
Signal-to-Noise Ratio:better than 45db (at 1kHz) unweighted
Sound quality rating:7 / 10
Long-term reliability rating: 7 / 10
A portable battery-operated recorder from the early 50’s, the EMI L2 was a single speed, single track recorder designed for use “in the field”. It took 5″ spools, used a permanent magnet d.c. motor (governor controlled) and had a manually operated (cranked), geared rewind.
The batteries used were 2 x 67.5 volt Ever-Ready type B103 for H.T and 10 x 1.5 volt cells in a removable metal box for L.T. (valve filaments & motor).
There were two heads, record and playback. No facility was provided for erasing, so one would always have had to use blank or pre-erased tapes on the job.
Power consumption was 12 mA on record (H.T.) and approx 800mA for the motor and filaments (L.T.)
Three models were made, each with a different tape speed – L2/C (15ips), L2/B (7½ips) and the L2/B (3¾ips).
In 1960 the L2 evolved into the solid-state L2/TA , identical to the earlier L2s but transistorised. A further variant was produced, the RE321, again mechanically identical to the L2.
Finally, In 1965, the aging L2 series was replaced by the all new Model L4.
Dynamic range: better than 45db (at 1kHz) unweighted / Valve complement: ZD17 x 4, N18 x 3 (Marconi) 1S5 x 4, 3Q4 x 3 (American equivalents) / Rewind speed: manual cranking! / Inputs: high impedance microphone / Outputs: headphones (1,500 ohms) and speaker (10,000 ohms) / Speaker(s): no / Dimensions: 15¼ x 7½ x 8¼ ” (387 x 190 x 210 mm) / Weight: 14½ lbs (6.4 kg) including batteries / full-track mono