Model:'Deluxe' Series 30
Country of Manufacture:USA
Release dates:1956 - 1959
Speeds: 3 3/4, 7 1/2, 15
Max Reel Size("): 10.5"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Frequency Response:(all 2 dB): 15 ips: 40Hz - 15kHz
Wow and Flutter:less than 0.1 % at 15ips, 0.2% at 7½ ips
Signal-to-Noise Ratio:55dB by NARTB standards (full track)
Sound quality rating:6 / 10
Long-term reliability rating: 6 / 10
The series 30 was very similar to the series 20 except that it featured a hysteresis synchronous direct
drive for increaded efficiency. Like the series 20 it came with three heads and room for two more.
Available in either 3¾ and 7½ ips or 7½ and 15 ips, it had two shaded pole motors for take-up and rewind (the latter functioning at 2,400 ft/minute with a lever giving variable control). The tape transport
contained no belts and produced less than 0.1% wow and flutter at 7½ ips, even less at 15 ips and reels of up to 10½ inches were catered for.
The tape transport control was a single lever and the machine had an automatic cut-off at the end of the reel or in event of a tape break.
Constant and unvarying tape tension was supplied by means of tension arms at each end of the tape path, threading was straight-line, simple and quick.
Each preamplifier section contained a two-channel microphone and line mixer with a standard broadcast VU meter.
Total harmonic distortion: 2% at zero VU / Rewind speed: 2,400 feet per minute / Inputs: high impedance microphone 1 line per channel / Weight: 45lbs (20.5kg) binaural version / single, dual or binaural