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MX-5050 BIII
A N A L O G R E C O R D E R
M X - 5 0 5 0
A n a l o g
T w o - T r a c k
R e c o r d e r
The MX5050 BIII has long been the
standard in 1/4” 2 track analog
recorders. It features an optimized
three-head design and transformerless balanced inputs and outputs to
provide superior frequency
response, low distortion and high
signal-to-noise performance under
the most demanding conditions.
Record setup adjustments can be
made from the front panel, and a
convenient built-in oscillator
provides test tones for
calibration/maintenance.
in Hrs/Min/Sec., as well as tape
speed in inches per second and
percentage of tape speed.
Capstan speed can be varied by
±20% in 0.01% steps using the
built-in “pitch” control. Time-code
editing using a synchronizer is
accomplished via the 37-pin Otari
standard parallel interface.
The extremely rugged mechanical
construction includes a 1/4”
deckplate with cast aluminum side
panels and steel support members.
All circuit boards are designed to
swing out or unplug for quick
service access.
S Y S T E M H I G H L I G H T S :
•
Positive-action transport controls
•
Balanced transformerless XLR I/Os
•
DC capstan, Quartz PLL servo-controlled
•
Built-in mini-autolocator
•
Rehearse function
•
Automatic monitor switching
•
Built-in test oscillator and external
oscillator input
•
Variable pitch control (±20%)
•
Front panel record setup adjustments
•
1/4” deck plate with cast aluminum
side panels and steel support members
The direct drive capstan motor is
servo-controlled, and an integral
microprocessor governs tape
handling, including dynamic
braking, motion sensing and
transport logic. A built-in miniautolocator provides three onetouch cue-point memories, search
zero, and a repeat function. The
tape timer display shows tape time
continued on back
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M X - 5 0 5 0 B I I I S P E C I F I C A T I O N S :
TAPE TRANSPORT
Track Configuration 1/4" 2 Track
Motor Capstan x 1 (DC brushless PLL servo motor)
Reel x 2 (AC Induction Motor)
Reel Size max. 10.5" NAB
Tape Speed High Speed Pair: 15 ips/7.5 ips
Low Speed Pair: 7.5 ips/3.75 ips
Tape Speed Accuracy max. ±0.2 %
Wow And Flutter Peak Weighted Per DIN 45507
15 ips: max. ±0.06 b%
7.5 ips: max. ±0.08 %
3.75 Ips: max. ±0.12 %
Start Time Time required to accelerate to double the
specified Wow and Flutter value.
Speed Start Time
15 ips max. 0.5 sec
7.5 ips max. 0.4 sec
3.75 ips max. 0.3 sec
Stop Time Time to stop from Play mode
Speed Stop Time
15 ips max. 0.5 sec
7.5 ips max. 0.3 sec
3.75 ips max. 0.3 sec
Time to Stop from Fast Wind max. 3 sec.
Fast Wind Time max. 110 sec for 2500 ft (50Hz)
max. 90 sec for 2500 ft (60 Hz)
ELECTRONICS
Input Line Mode: Transformerless Active Balanced
Input Impedance: 100kohm, 20Hz–20kHz
Nominal Level: +4dBu
Max. Level: +30dBu
Connectors: XLR Female type
Mic Mode: Transformerless Active Balanced
Input Impedance: 10kohm
Min. Level: -70dBu/-50dBu/OFF switchable
Mic. Impedance: Min. 150ohm
Output Line Mode: Transformerless Active Balanced
Output Impedance: Max 5ohm (20Hz–20kHz)
Load Impedance: MIn. 200ohm
Nominal Level: +4dBu/-16dBu switchable
Max Level: +26dBu for 200ohm
Connectors: XLR Male type
Phone Load Impedance: 8ohm
1/4" Standard Stereo Phone Jack
Note: 0dBu = 0.775V
Equalization NAB/IEC Selectable
Standard Reference Flux MX-5050 BIII-2, 185/250/320* nWb/m
(*open circuit flux)
Frequency Response REC/REP Frequency Response
15 ips 30Hz - 20kHz ±2dB
7.5 ips 30Hz - 18kHz ±2dB
3.75 ips 20Hz - 10kHz ±2dB
REC/SEL-REP Frequency Response
15 ips 250Hz - 7.5kHz ±3dB
7.5 ips 250Hz - 5kHz ±3dB
3.75 ips 250Hz - 2.5kHz ±3dB
Signal to Noise Ratio
Filter Unwtd Wtd
Speed EQ
15ips IEC 70dB 73dB
NAB 69dB 72dB
7.5ips IEC 67dB 70dB
NAB 71dB 73dB
3.75ips IEC 64dB 67dB
NAB 64dB 67dB
Measured with respect to a recording level of 1,040 nWb/m
at 15 and 7.5 ips, and 740 nWb/m at 3.75 ips, using
AMPEX 456 or equivalent tape.
Unwtd: Using a 30Hz to 18kHz RC filter to eliminate noise
outside the audio spectrum.
Wtd: Using a NAB or ANSI “A” weighting filter and a 1kHz
reference.
Distortion Total Harmonic Distortion
Crosstalk min. 55dB
max. 0.3% (15 ips 1kHz, 250 nWb/m, AMPEX 456)
Depth of Erasure min. 75dB
Test Oscillator Sine wave 1kHz/10kHz
Bias Frequency 133kHz
Erase Frequency 133kHz
Operating Environment 5–40˚C (41–104˚F) 20–80% RH
Storage Environment -20–45˚C (-4–113˚F) 10–80% RH
Dimensions MX-5050 BIII 527 x 430 x 275 mm (H x W x D)
Weight MX-5050 BIII 28kg
OPTIONAL ACCESSORIES Name Part No.
Auto Locator (8-memory) CB-119
Remote Controller (Transport) CB-127
Input Transformer (2Ch unit) ZA-53T-T
Output Transformer (2Ch unit) ZA-53S-T
Pedestal ZA-52L-22
Rack Mount Kit RK-2B
2-Trk version with 1/4” Trk Playback MX5050 BIII-P
430mm
527mm
EDIT
PEAK
PEAK
VU
VU
206mm
220mm
Japan & Europe
Otari, Inc.
phone: +81-424-81-8626
fax: +81-424-81-8633
mail: [email protected]
Singapore
Otari Singapore PTE, LTD.
phone & fax: +65-6738-7807
mail: [email protected]
USA
Otari U.S.A. Sales Inc.
phone: +1-818-734-1785
fax: +1-818-734-1786
mail: [email protected]
www.otari.com
© 1999, 2008 Otari, Inc.
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