Model:900 series 4
Country of Manufacture:USA
Release dates:1953 - 1956
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 7½ ips: 65 - 10kHz
Wow and Flutter:less than 0.5% at 7½ ips
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
Made by Crescent Industries of Chicago, Illinois, the 903 was a budget portable dual-track recorder with a speed of 3¾ and the model 907 had a speed of 7½ ips. The 9037 predictably had both speeds with a push/pull selector switch. A single motor drive gave a fast forward and fast rewind speed of 80 seconds for 1200 ft and wow and flutter were quoted as being less than 0.5% at 7½ ips. An inbuilt 2-watt amplifier powered a front-facing internal speaker and the recording level was indicated by a neon lamp. Microphone and radio/phono inputs were provided as was an output for the external speaker and amplifier.
Valve complement: 5879 pre-amp. 12AX7 AF amp. 6V6GT audio output & bias osc. 6X5GT Rectifier / Rewind speed: 80 seconds for 1200ft / Audio output power: 2 watts / Inputs: mike: 1 mohm. radio / phono – .5 mohm / Outputs: external 3.2 ohm speaker, external amp 1 mohm / Speaker(s): 5″ / Weight: 20lb s (9.1 kg) / half-track mono