Country of Manufacture:United Kingdom
Release dates:1966 - 1969
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 1
Frequency Response:7½ ips: 50Hz - 18kHz
Wow and Flutter:0.15% at 7½ ips. 0.16% at 3¾ ips and 0.2% at 1ips
Signal-to-Noise Ratio:52 dB weighted
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
A quarter-track stereo, all-transistorised recorder aimed at the hi-fi enthusiast,
the Dynatron STR1 utilised a three-speed, single PAPST motor deck made by Garrard (in collaboration with Dynatron). The deck featured three heads, a large central keyboard for transport control and a solenoid controlled auto-stop. The ST1’s production life was cut short due primarily to Dynatron becoming absorbed into the Philips group, who, it may be recalled, had a few tape recorders of their own to market!
Price when new: £82. 19s.
Semiconductors: 16 transistors, 4 diodes and 1 rectifier / Audio output power: 2 x 3 watts / Inputs: microphone: 0.7mV, 5Kohm radio: 1-150mV (factory set to 15mV) P.U. 150mV 680 Kohm / Outputs: low level 0.5V. headphones 100-2Kohm. speakers 3 watts / Speaker: single speaker with changeover switch to monitor either channel / Dimensions: 15 x 12¼ x 7″ (381 x 311 x 178 mm) / Weight: 25½ lbs (11.6 kg) / quarter-track stereo playback