Sales brochure 1978 · Part 5 · scan pages 5
Specifications
SPECIFICATIONS↑ TOP
TRANSPORT:↑ TOP
Tape Width and Channels: ¼ inch (6.3 mm) wide. One channel: full track. Two channel: 0.075 inch (1.9 mm) track width.
Tape Speeds: One channel: 7½ and 3¾ ips (19 and 9.5 cm/s). Two channel: 15/7½ ips (38/19 cm/s) or 7½/3¾ ips. Maximum deviation 0.15% with 1.5 mil (0.038 mm) tape and hysteresis synchronous motor.
Rewind Time: Less than 90 seconds for 2500 foot reel.
Reel Size: 10½ inch EIA or NAB; 5 or 7 inch plastic.
Heads: One channel, Model MX-5050-FL Full Track: Four head stacks: Full track erase, ½ track reproduce, full track record, full track reproduce. Two channel versions: Model MX-5050-2S Half-track: Four head stacks: ½ erase, ¼ reproduce, ½ record, ½ reproduce.
Motors: Capstan: Two speed hysteresis synchronous or variable speed (±7%) dc servo controlled motor. Reels: Two induction torque motors.
Flutter and Wow: (Measured per NAB weighted): Tape Speed 15 ips less than 0.05% 7½ ips less than 0.06% 3¾ ips less than 0.12%
ELECTRONICS↑ TOP
Connectors: Line: Standard three-pin XLR. Microphone: Standard ¼ inch phone jack.
Inputs: Line: Minimum −15 dBm, unbalanced 50 k ohms. Minimum −15 dBm, balanced 600 ohms with optional transformer. Microphone: Minimum −70 dBm, unbalanced, nominal 50 k ohms (usable range150 ohms to 50 k ohms).
Outputs: Line: Variable or fixed level. Fixed level: +4 dBm or −10 dBm rear panel switch selectable. Headroom: +19 dBm before clipping. Impedance: 600 ohms, balanced. Headphone Jack: −24 dBm, nominal 8 ohms.
Equalization: NAB standard for 3¾, 7½ and 15 ips.
Signal to Noise Ratio (overall record/playback):
| Tape Speed | Two Track Weighted | Two Track Unweighted | Full Track Weighted | Full Track Unweighted |
|---|---|---|---|---|
| 15 ips | 65 dB | 63 dB | — | — |
| 7½ ips | 65 dB | 63 dB | 69 dB | 66 dB |
| 3¾ ips | 64 dB | 62 dB | 68 dB | 65 dB |
Measured with respect to a record level of 520 nWb/m to biased tape noise when using 3M 206, Ampex 456, or 3M 250 tape.
Crosstalk: At 1000 Hz on adjacent tracks: Two track: greater than 55 dB.
Frequency Response (overall record/playback): 15 ips (at 0 VU): 50 to 22,000 Hz ±2 dB. 35 to 25,000 Hz ±3 dB. 7½ ips (−10 VU): 50 to 18,000 Hz ±2 dB. 30 to 20,000 Hz ±3 dB. 3¾ ips (−10 VU): 50 to 12,000 Hz ±2 dB. 30 to 15,000 Hz ±3 dB.
Specifications based on Ampex NAB alignment tape and 3M 206.
Distortion: Less than 1% at 1000 Hz at 185 nWb/m.
Test Oscillator Frequency: Nominal 1000 Hz.
PHYSICAL↑ TOP
Operating Position: Vertical or horizontal.
Power Requirements: 117 volts, 60 Hz, single phase ac, 100 watts. (Servo version: 117/220/240 volts, 50/60 Hz.)
Operating Environment: 40° to 104°F (5° to 40°C); 20 to 80% RH.
Storage Environment: −5° to 113°F (−20° to 45°C); 10 to 80% RH.
Weight: Cabinet: 53 lbs. (24 kg). Portable case: 62 lbs. (28.2 kg).
Mounting: Walnut finish cabinet (standard); portable case, floor console, or rack mounting adaptor (optional).
Standard Accessories: Empty 10½ inch NAB reel, precision hold down knob, fuse, NAB reel shims, operating manual.
Optional Accessories: 600 ohm balanced input transformers, remote control, line adaptor cables, portable case, floor console, rack mounting adaptors.
Size: Height: 21⅝ inches (54.9 cm) including reel overhang. Width: 21⅜ inches (54.3 cm) including reel overhang. Depth: 7⅝ inches (19.5 cm) Portable case adds front and back covers for total depth of 14½ inches (36.8 cm).
Otari reserves the right to change specifications without notice or obligation. This specification sheet applicable in North America.
EFFECTIVE APRIL 1978 DISTRIBUTED BY:
Otari Corporation 981 Industrial Road San Carlos, California 94070 (415) 593-1648 TWX: 910-376-4890
MANUFACTURED BY OTARI ELECTRIC CO., LTD., TOKYO, JAPAN.
Printed in U.S.A.—S-117A—4-78