Category:Super High Fidelity
Country of Manufacture:Japan
Release dates:1983 - 1987
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 6
Dimension: 17 x 14.4 x 10.4 (432 x 364 x 262 mm)
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Voltage(s): 110-120v, 220-240v
Frequency Response:7½ ips: 40Hz - 30kHz 3¾ ips: 40Hz - 22kHz ( 3dB)
Wow and Flutter:.03% at 7½ and .04% at 3¾ ips
Signal-to-Noise Ratio:65dB at 3% THD, 110dB with dbx on
Sound quality rating:7 / 10
Long-term reliability rating: 7 / 10
Weight: 39.7 lbs (18 kg)
Bi-directional record and playback were the main selling point of the X-700R. It featured six Hard permalloy heads (two each for erase, record and playback) and three motors.
Speeds were 7½ and 3¾ ips and maximum reel size was 7″.
A dbx noise reduction circuit was incorporated, and, coupled with EE (Extra Efficiency) tape, the X-700R had a pretty impressive frequency response and signal to noise ratio.
A dual-capstan closed-loop transport mechanism was employed, which effectively isolated the tape in the critical head area from tension irregularities outside of the loop and hence reducing wow and flutter to a minimum (0.03% at 7½ ips). A ±6% pitch control was also included.
Full logic control enabled direct switching between any mode and a record mute function and timer rec/play capability provided recording convenience. Options included the RC-100 remote control unit, TZ-550 dust cover and RM-7 EIA standard rack mount kit. In many of the X series decks, Teac made an auto reverse and standard model with only three heads. No such model was made in the 700 series.
Less-featured, lower budget versions were available in both bi-directional playback and single direction playback – the X-300 / X-300R.
If you own an X series Teac you may want to read the Service Considerations detail on capstan motor issues.
Track System Quarter-track stereo, Bi-direction record and playback
Heads Six Permalloy heads- 2 erase, 2 record and 2 playback
Motors Three- FG servo DC (capstan); two DC slotless (outer reels)
Maximum Reel Size 7″
Tape Speeds 7½ and 3¾ ips
Frequency Response (3dB)
7½ ips: 40Hz – 30kHz
3¾ ips: 40Hz – 22kHz
Wow & flutter
0.03% at 7½ and 0.04% at 3¾ ips
Signal to noise ratio 65dB at 3% THD, 110dB with dbx on
Crosstalk 50dB at 1kHz
Rewind Time 150 seconds for 1,800 feet
Harmonic Distortion .8% at 1,000Hz
Bias frequency 100kHz
Inputs line: 60 mv, 50 kohms
microphone: 0.25 mV/-72 db (200 ohms or more)
Outputs line: 0.45 V for load impedance of 10 kohms
headphones: 8 ohms
Dimensions 17 x 14.4 x 10.4 (432 x 364 x 262 mm)
Weight 39.7 lbs (18 kg)