The VIKING 88 Stereo-Compact is a precision instrument designed and built by Viking of Minneapolis. The recorder was designed for use in critical high fidelity stereo tape recording and playback applications. Refer to the 88 Stereo-Compact Operating Instructions manual for hook up and variation in application.
RECORD/PLAYBACK FREQUENCY RESPONSE: 30-18,000 cps ± 3 db at 7.5 ips, 30-12,000 cps ± 3 db at 3.75 ips.
STEREO RECORD/PLAYBACK AMPLIFIER TUBE COMPLEMENT: Five ECC83/12AX7; One 12AU7A, two Silicon Planar Transistors, and Semiconductor Rectifiers.
INPUT (LOW LEVEL) PER CHANNEL: Two mv for "O" VU; one megohm impedance for microphones.
INPUT (HIGH LEVEL) PER CHANNEL: 250 mv for "O" VU; 100 k impedance for tuner.
AMPLIFIER OUTPUT LEVEL: Two volts at "O" VU; 5 k ohms impedance "TAPE"; 20 k ohms impedance "SOURCE".
MONITOR OUTPUT LEVEL: Two volts at "O" VU; 5 k ohms impedance.
SIGNAL-TO-NOISE RATIO: 55 db below peak signal level at 7.5 ips.
TOTAL HARMONIC DISTORTION: 1.0%.
LONG-TERM SPEED REGULATION: 0.5%.
BIAS/ERASE FREQUENCY: 95 kc.
LEVEL INDICATION: Two professional VU meters.
EQUALIZATION: NAB 7.5 ips, EIA 3.75 ips standard, automatically selected (record and playback by transport speed selector).
TAPE SPEEDS: 7.5 ips, and 3.75 ips instantly selected.
CAPSTAN DRIVE: Flutter-filter belt drive.
CAPSTAN WHEEL: Two pound, non-magnetic, dynamically balanced.
BEARINGS: Oil-impregnated. No lubrication required.
CAPSTAN DRIVE MOTOR: Four pole, 60-cycle, 110 volts AC (hysteresis synchronous motors available at extra cost).
FLUTTER AND WOW: Less than 0.2% at 7.5 ips.
BRAKES: Tandem, 360 degree contact. Play/stop 0.2 seconds. Mechanically adjusted.
REEL SIZE: Seven inch maximum.
FAST FORWARD TIME: 60 seconds for 1200 feet.
REWIND TIME: 90 seconds for 1200 feet.
COUNTER: Three digit decimal, resettable.
POWER REQUIREMENTS: 125 watts maximum, 110-120 volts AC, 60 cycles.
SHIPPING' WEIGHTS as follows:
MODEL 88 STEREO-COMPACT: 22 pounds, 25 pounds in shipping container.
MODEL 880 STEREO-COMPACT: 45 pounds, 48 pounds in shipping container.
DIMENSIONS: Model 880, 14-1/4 inches H., 20-1/4 inches W., 8-1/2 inches D.