1971 4000 X
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1971 4000 X |
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Identical to the 6000 X but with an inbuilt 10 watt RMS per channel stereo amplifier and twin internal 4" x 7" speakers In brief, the 4000 X was a three-speed single motor recorder with four heads (erase, record, playback and crossfield bias) providing three tape speeds and a seven inch reel capacity. Continuously variable dual-concentric bass and treble knobs were provided and affected playback only through the speakers and headphones. See specifications for more detail. A user manual for this recorder is featured on the CD ROM. |
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| Specifications | |
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Year
of manufacture |
1971-74 |
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Model |
Series 4000X |
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Track
config |
4-track or 2-track stereo |
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Heads |
separate erase, record, playback and crossfield bias |
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Speeds |
7½,
3¾, and 1
ips |
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Frequency
response (DIN 45511) |
7½
ips: 40 - 22kHz, 3¾ ips: 40 - 18kHz, 1
ips: 40 - 10kHz |
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Wow
& flutter (W.R.M.S.) |
0.07%, 0.14% and 0.28% (measured W.R.M.S.) |
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Speed
tolerance |
 1% |
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Motors |
single hysteresis Synchronous |
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Maximum
reel size |
7" |
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Signal-to-noise
ratio |
four-track: 60 dB, two-track: 62 dB |
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Fast
wind time |
1200ft - 1 min 45 sec; 1800ft - 2 min 10 sec |
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Crosstalk |
Mono > 60dB; Stereo > 50dB (at 1,000Hz) |
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Erase
& bias frequency |
85.5kHz. Distortion less than 0.5% |
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Inputs |
Mic:
(balanced) impedance 200 - 700 ohm sens. 70uV max 70mV Line: impedance 100kohms sens. 5mV max 15V Phono: magnetic- 33 kohms, 1mV @ 1000Hz |
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Outputs |
Emitter follower: 200ohms/1.5V; Line: 5kohms/160mV; Radio: 5kohms/0.75V; Stereo headphone socket min imp 200ohms/1.5V |
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Audio
power output |
2 x 10 watts R.M.S. |
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Speakers |
two internal 4" x 7" speakers |
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Dimensions |
15½" x 12½" x 6½" (394 x 318 x 165mm) |
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Weight |
23 lbs (10.6kg) |
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