Teac X-7RMKII - 1 SPECIFICATIONS AND SERVICE DATA; Specifications and Service Data

X-7R oO /X-7ucl
1 SPECIFICATIONS AND SERVICE DATA
SPECIFICATIONS
Track System %-track, 2-channel stexeo
Head System
X-7RMKII: 6 heads: forward erase, forward record, reverse
playback, forward playback, reverse
record, reverse erase.
X-7MKII: 3 heads: erase, record, playback
Reel Size 7”
Tape Speed 19cm/s (7-% ips) and 9.5cm/s (3-% ips)
Inputs (level and impedance)
MIC: Specified input level: —G0dB (0.775mV)/10kohms
Min. input level: ~70dB (245nV)
LINE IN: Specified input level: —12dB (195mV)/50kohms
Min. input level: —22dB (61.5mV)
Outputs (level and impedance)
OUTPUT: Specified output level: —5dB (436mV)/10kohms
Max. output level: +1dB (0.869V)
PHONES: Specified output level: —24dB (48.9mV)/8o0hms
Playback Equalization
19em/s: 3,180us + 50us (NAB), 3,180us + 35ys (EE)
9.5em/s: 3,180us + 90us (NAB), 3,180us + 50us (EE)
Motors
Capstan motor: DC brush motor with FG servo
Reel motor: 2 DC slotless motors
Bias Frequency 100kHz
Operating Position Vertical, horizontal, angled
Power Requirements
100/117/220/240V, AC 50/60Hz, 77W, 72W for X-7MKII
(General export model)
220V AC 50Hz, 77W, 72W for X-7MKI (Europe model)
240V AC 50Hz, 77W, 72W for X-7MKI] (U.K./Australia model)
117V AC 60Hz, 77W, 72W for X-7MKII (U.S.A./Canada model)
Weight 18kg (38-11/16 Ibs.) net
aera rt
196mm
(7-3/4)
270mm ___|
(10-5/8"')
h——— 461mm (18-3/16'") —-—
454mm(17-7/8"")
384mm(15-1/8"") ——+]
411mm(16-3/16"") ——
—) Saad
OO
co Oe
+-—— 369mm(14-9/16"")
=
Dashed line indicates General Export Models for Limited Areas.
Fig. 1-1 Dimensions
SERVICE DATA
MECHANICAL
Tape Speed Deviation 3,000Hz + 30Hz
Tape Speed Drift 15Hz
FWD/RED Tape Speed Differential (X-7RMKII only) 30Hz
Wow and Flutter
Playback: 0.05% (WRMS), 0.10% (RMS) at 19cm/s
0.07% (WRMS), 0.12% (RMS) at 9.5cm/s
Record/Playback: 0.12% (RMS) at 19cm/s
0.15% (RMS) at 9.5cm/s
Pinch Roller Pressure 1.35kg ~ 1.9kg (3.0 Ibs ~ 4.2 Ibs)
Reel Torque
Play mode:
Take-up 260 + 40g-cm (3.1 ~ 4.20z-inch)
Back tension 180 + 40g-cm (1.9 ~3.10z-inch)
Fast winding mode:
Take-up: 1100g-cm (15.30z-inch)
Back tension: 50g-cm (0.70z-inch)
Brake Torque
Forward direction: 800 ~ 1400g-cm (11 ~ 190z-inch)
Reverse direction: 500g-cm (6.90z-inch) or less
Left/right deviation: 200g-cm (2.80z-inch) or less
Fast Winding Time 150 seconds or less for 550m (1800 feet)
Pitch Control Standard tape speed +6% or more
FWD/REV Change Time (X-7RMKII only) 3.5 sec. +0.5 sec.
TIMER Activate Time 4 sec. +2 sec.
ELECTRICAL
Frequency Response Playback: See Fig. 3-5 to 3-6
Overall: See Fig. 3-7 to 3-8
Signal to Noise Ratio Playback: 50 dB min. (19 cm/s, LH)
52 dB min. (19 cm/s, EE)
49 dB min. (9.5 cm/s, LH)
52 dB min. (9.5 cm/s, EE)
48 dB min. (19 cm/s, LH)
50 dB min. (19 cm/s, EE)
46 dB min. (9.5 cm/s, LH)
50 dB min. (9.5 cm/s, EE)
68dB min. at 1kHz (measured with input
10dB higher than the specified input level)
Channel Separation 50dB min. at 1kHz
Adjacent Track Crosstalk 40dB min. at 125Hz <
Total Harmonic Distortion 0.8% or less at 1kHz
Overall:
Erase Efficiency
e Improvements may result in SPECIFICATIONS AND SER-
VICE DATA changes.
e Value of “dB” in the data refers to OdB (0.775V), except
where specified.
AParts marked with this sign are safety critical components.
They must always be replaced with identical components —
refer to the TEAC Parts List and ensure exact replacement.