Technical Details
Brand: Tandberg
Model:4000X
Category:Mid High Fidelity
Application:Consumer
Electronics:Solid State
Equalization:IEC
Country of Manufacture:Norway
Release dates:1971 - 1975
Original Price: $180
Tracks:1/4 Rec/PB
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 4
Dimension: 15½ x 12½ x 6½ " (394 x 318 x 165mm)
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 1
Auto Reverse?:No
Voltage(s): 110-120v
Outputs: RCA
Frequency Response:7½ ips: 40Hz - 22kHz 3¾ ips: 40Hz - 18kHz 1 ips: 40Hz - 10kHz
Wow and Flutter:7½ ips: 0.07% 3¾ ips: 0.14%. 1 7/8 ips: 0.28%
Signal-to-Noise Ratio:1/4 Tr. 60 dB, 1/2 Tr. 62 dB
Sound quality rating:6 / 10
Long-term reliability rating: 7/ 10
Weight: 23 lbs (10.6kg)
Additional Details
Description
Identical to the 6000X but with an inbuilt 10 watt RMS per channel stereo amplifier and
twin internal 4″ x 7″ speakers, the 4000X was a three-speed, single motor recorder with four heads (erase, record, playback and crossfield bias) and a seven inch reel capacity.
Continuously variable dual-concentric bass and treble knobs were provided (for playback only).
Features included line/mic mixing, sound on sound, echo, illuminated four-digit revolution counter and automatic end-stop.
Additional Info
Year 1971
Price when new (in the UK) £180 (including purchase tax)
Track system Quarter-track or half-track stereo versions available
Heads Four: erase, record, playback and crossfield bias
Motors Single hysteresis synchronous
Maximum reel size 7″
Tape speeds 7½ , 3¾ , and 1 ips
Frequency response (DIN 45511) 7½ ips: 40Hz – 22kHz; 3¾ ips: 40Hz – 18kHz ;1 ips: 40Hz – 10kHz
Wow & flutter (measured W.R.M.S.) 7½ ips: 0.07%;, 3¾ ips: 0.14%; 1 ips: 0.28%
Speed tolerance 1%
Signal to noise ratio Quarter-track: 60 dB, half-track: 62 dB
Crosstalk mono > 60dB; stereo > 50dB (at 1,000Hz)
Bias frequency 85.5kHz. Distortion less than 0.5%
Rewind speed 1200ft – 1 min 45 sec; 1800ft – 2 min 10 sec
Audio output power 2 x 10 watts R.M.S.
Inputs
mic: (balanced) impedance 200 – 700 ohm sens. 70uV max 70mV
line: impedance 100K sensitivity 5mV max 15V
phono: magnetic- 33 kohms, 1mV @ 1000Hz
Outputs
emitter follower: 200ohms 1.5V
line: 5K 160mV
radio: 5K 0.75V
stereo headphone socket: min impedance 200ohms 1.5V
Speaker(s) Two internal 4″ x 7″ speakers
Dimensions 15½ x 12½ x 6½ ” (394 x 318 x 165mm)
Weight 23 lbs (10.6kg)