Model:4000 Report IC
Category:Mid High Fidelity
Country of Manufacture:Germany
Release dates:1965 - 1968
Speeds: 1 7/8, 3 3/4, 7 1/2, 15
Max Reel Size("): 5"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 7½ ips: 40Hz - 20kHz
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
These were battery-operated portable hi-fi stereos (4400 quarter-track and 4200 half -track). The model 4000 was a hi-fi quarter-track mono. All models had four tape speeds, tape tension regulation, Integrated Circuit (IC) power stage and an internal speaker.
A rugged aluminium die cast frame ensured stability and long-life (these recorders were used by NASA!) and made it an obvious choice for broadcast use. In excess of 600,000 of these durable machines were sold over a sixteen year production cycle. A high speed motor ensured stability even in the event of vibration or movement and a speed accuracy of less than 1.5%
was quoted. Wow & flutter was less than 0.20% at 7½ ips.
All models could be powered off single cell, car or rechargeable battery or by mains power supply unit.
16 ips: 40Hz – 4.5kHz / Wow & flutter: 0.2%. 0.25%. 0.35% and 0.5% respectively / Hum & noise: 53dB. 51dB. 47dB & 43dB respectively / Signal to noise ratio: 64dB at 7½ ips / Crosstalk: mono > 60dB. stereo >45dB / Rewind speed: 3 minutes for 900ft / Inputs: mic 0.1mV 200 ohms. radio 2mV 47K,. PU 30mV 1Mohm / Outputs: line 1V 15K, speaker 4 ohms / Dimensions: 12¼ x 9 x 3¾” (285 x 227 x 95 mm) / Weight: 8½ lbs (3.8kg) / 4000 – half-track mono. 4200 & 4400 – half or quarter-track stereo