Category:Super High Fidelity
Country of Manufacture:USA
Release dates: -
Original Price: $900
Speeds: 7 1/2, 15
Max Reel Size("): 10.5"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo - Stacked
# Motors: 3
Frequency Response:30Hz - 18k +-2dB 15 ips
Wow and Flutter:.1%
Sound quality rating:9 / 10
Long-term reliability rating: 9 / 10
A pretty spectacular sounding machine that Anyone considering would best ignore the specifications for frequency response w/f etc. as it sounds way better than many very expensive Japanese machines. really musical, really dynamic and very small for a 10 inch capacity machine. As you can see in the photos, I added an IEC socket for power and RCA’s for input-output.
Available in two track (728) and quarter-track stereo (748), both versions had the following features:
Monitoring: Phone jack on front panel for head phones.
Approximate dimensions 18 inches wide 14 inches tall 14 inches deep. Weight 50 pounds. rewind/fast-forward 1600 ft./m
Headphone jack, early remote control option so the 728 can be started and stopped in any mode of operation.
Inputs for high impedance or low impedance microphones x 2
These machines had an optional fourth head, switchable on front panel, for quarter track playback which unfortunately my model does not have.
Heads: Erase head. full track, half track, or split stereo
at customer’s option. Record head and reproduce head. full track, half
track or in-line stereo. (Additional heads were available for quarter
track or special applications.)
Remote control: With single pole/single throw switch installed,
the recorder could be start-stopped in any mode of operation.
INPUT: Two high-impedance microphones (for use with two
250Kohm impedance unbalanced bridge inputs).Two low impedance microphones
(for use with optional input transformers 50Kohm impedances)
Crosstalk: better than 55 db per channel. / Bias frequency: 100 Hz / Valve complement: record: 6AN8 and 12AT7 per channel, playback: 7025 and 12AT7 per channel, bias: 12BH7, solid state power supply diodes / Rewind speed: 1600 feet per minute / Inputs: high & low impedance mics, high impedance balanced & unbalanced bridge / Outputs: cathode follower, 2.5 V & 150 / 600 ohms balanced / Dimensions: 17½ x 13 x 12″ (444.5 x 330 x 305 mm) / Weight: approx 50 lbs (22.7 kg) / half-track or quarter-track stereo