Sony EL-5 (1976–1978)
The Sony EL-5 is a component Elcaset tape deck. Sony tried to make the Elcaset format happen in the mid-1970s and failed. The EL-5 was one of the first products to carry Sony's ES designation, alongside the TC-766-2 reel-to-reel from the same year. The idea behind Elcaset was simple. Take a cartridge that holds standard quarter-inch tape running at 3.75 ips (faster than compact cassette's 1⅞ ips), and get performance closer to open-reel without the threading hassle. It didn't catch on, and the EL-5 was built for only a couple of years.
What little is documented shows a serious machine underneath the format gamble. The EL-5 uses a three-motor, three-head transport: a direct-drive brushless and slotless capstan motor with crystal-locked speed control, two reel motors, and separate ferrite-and-ferrite heads for erase, record, and playback. The dual-capstan system employs a large flywheel and bi-phase tape tension control. Frequency response was rated at 30 Hz–20 kHz ±3 dB at 3.75 ips, with 0.8% THD at 1 kHz and 0 dB, a signal-to-noise ratio of 60 dB, and wow and flutter of 0.04% WRMS. The deck measures 430 mm wide, 180 mm high, and 380 mm deep, and weighs 18.5 kg (40.8 lb).
Modern Recording (June 1977, p.63) ran a practical test of the EL-5, recording an FM broadcast quartet from the air using Type I Elcaset tape. On playback, the result was "indistinguishable from the broadcast," and the reviewer noted the deck ran as claimed - smoothly, quietly, and responsively. The EL-5 was priced at ¥230,000 in Japan (about $766 USD at the time). Beyond that, surviving information is thin. The format faded quickly, so parts, service knowledge, and even used-market prices are poorly documented today.
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