Category:Super High Fidelity (Reserved for top-end recorders)
Country of Manufacture:Japan
Release dates:1983 - 1987
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 1 (PB)
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Frequency Response:( 3dB): 7½ ips: 40Hz - 30kHz 3¾ ips: 40Hz - 22kHz
Wow and Flutter:0.03% at 7½ and 0.04% at 3¾ ips
Signal-to-Noise Ratio:65dB at 3% THD, 110dB with dbx on
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
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.
Crosstalk: 50dB at 1kHz / Rewind time: 150 seconds for 1,800 feet / Harmonic distortion: 0.8% 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) / quarter-track stereo, bi-direction record and playback