Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:United Kingdom
Release dates:1960 - 1963
Speeds: 3 3/4, 7 1/2, 15
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Frequency Response:(all ± 2 dB): 15 ips: 50 to 15kHz
Wow and Flutter:0.2% RMS at 15 ips. 0.25% RMS at 7½ ips and 0.3% at 3¾ ips
Sound quality rating:7 / 10
Long-term reliability rating: 7 / 10
The TR52 was produced in various versions, single channel full or half track (TR52/1) and two channel
(TR52/2). In addition, each variant came in two versions depending on tape speed, “C” for 3¾ and 7½ ips and “D” for 7½ and 15 ips. The model pictured here is a TR52/2C
Marketed as a professional model, record characteristics were set up in accordance with CCIR recommendations and separate record and replay amplifiers and heads permitted “off-tape” monitoring.
A single motor connected to the capstan assembly via a flexible coupling also provided power for the take-up, rewind and wind-on facilities.
Speed variation: less than ±0.2% over a full reel / Dynamic range: unweighted noise and hum 50dB below peak recording level / Total harmonic distortion: less than 1% 2nd harmonic and less than 2% 3rd harmonic at peak record level / Crosstalk: better than 40dB at 1kHz / Record characteristics: CCIR specification for 15 ips and 7½ ips / Bias frequency: 100kHz approximately / Valve complement: 3 x EF86, 2 x ECC83, 2 xECC82, 2 x ECC81, 6BW6, EZ81 / Rewind speed: 2 minutes 20 seconds in either direction for 1,800ft / Audio output power: 2 watts at 3 to 5 ohms. / Recording level meter: selectable for line in, record, line out, bias or erase on either channel / Inputs: Mic – balanced bridging suitable for 30 – 50 ohm microphone – sensitivity less than 10mv for peak Line – ‘Floating’ for balanced or unbalanced working, suitable for 600 ohm impedance, 80mV. / Outputs: Line – 600 ohm ‘Floating’ balanced or unbalanced, maximum level +20dB extension speaker / Speaker(s): internal 5″ permanent magnet speaker / Dimensions: 21 x 18¼ x 15″ (503 x 460 x 365mm) / Weight: 80 lbs (36kg) / single channel full or half-track (TR52