Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:USA
Release dates:1969 - 1972
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:( 3 dB): 7½ ips: 50Hz -15kHz
Wow and Flutter:0.2% at 7½ ips
Signal-to-Noise Ratio:better than 50dB
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
on the Akai 4000, the Roberts 450
was a three-head stereo tape deck.
Features included a dynamically balanced, 4-pole
split capacitor motor for all functions, all silicon transistor circuitry,
direct monitoring off tape while recording and auto shut-off
From the 1969 Allied Electronics catalog, price
when new $179.95.
Semi-conductors: 17 silicon transistors, 2 diodes and 2 rectifiers / Rewind speed: 150 seconds for 1,200 ft tape / Inputs: microphone – 0.5mV, line – 50mV / Outputs: line – 1.23v at 0 VU, stereo headphones / Dimensions: 12 x 15¾ x 7½ (305 x 400 x 180 mm) / Weight: 26 lb (11.8 kg) / quarter-track stereo