Country of Manufacture:United Kingdom
Release dates: -
Speeds: 3 3/4, 7 1/2, 15
Max Reel Size("): 10.5"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:( 3dB): 15 ips: 30Hz -20kHz 7½ ips: 30Hz -17kHz 3¾ ips: 40Hz -14kHz
Wow and Flutter:(less than) 0.08% at 15 ips, .1% at 7½ ips. 0.15% at 3¾ ips
Signal-to-Noise Ratio:better than 55 dB
Sound quality rating:6 / 10
Long-term reliability rating: 4 / 10
The Ferrograph Super Seven addressed many of the problems, and shortcomings that had
blighted the original “Series 7″.
The move to the higher capacity 10½ ” NAB spool size was very
welcome, particularly for those recording at 15 ips. This move added a
further control to the panel. At the side of the variable wind knob is
a reel size selector, which adjusts the torque of the motor to suit the
heavier 10½ ” reels.
Mechanically, this model is the same the Series 7, albeit beefed up to
ensure correct and safe handling of the more professional spool size.
Metering was improved, at least in physical size if not performance.
Channel separation: better than 50db / Distortion: less than 0.25% at levels up to 10 watts / Rewind speed: approx 2 min for 1800ft, 3 min for 3600ft / Audio output power: 10 watts per channel / Inputs: microphone: 300 uV – 15 mV at 10 Kohms Line: 50 mV – 10 V at 10 Mohm / Outputs: low level line: 300mV into 10 kohm high level line: 2V into 600 ohms stereo phones (8 – 600 ohms) speakers (10 watts) / Speaker(s): two 7 x 4 inch elliptical speakers / Dimensions: 20¼ x 17½ x 10″ (515 x 445 x 255 mm) / Weight: 55 lbs (25kg) / models available in almost every possible track configuration