# Otari Mx-55 N-M

# Tape Transport

<table id="bkmrk-track-configuration-"><tbody><tr><td style="color:#696969;">**Track Configuration**

</td><td style="color:#696969;">1/4" (6.3 mm) Width Tape, 2-track 2-channel, NAB or DIN Stereo

</td></tr><tr><td style="color:#696969;">**Nom. Tape Speed**

</td><td style="color:#696969;">38.1 &amp; 19.05 cm/s (15 &amp; 7.5 ips) switchableChangeable to 19.05 &amp; 9.5 cm/s (7.5 &amp; 3.75 ips)

</td></tr><tr><td style="color:#696969;">**Speed Accuracy**

</td><td style="color:#696969;">Within ±0.2%

</td></tr><tr><td style="color:#696969;">**Speed Deviation**

</td><td style="color:#696969;">Less than 0.2%

</td></tr><tr><td style="color:#696969;">**Pitch Control**

</td><td style="color:#696969;">±20% continuously variable control.Percentage or ips readout with 0.01% precision multiturn encoder servo system.

</td></tr><tr><td style="color:#696969;">**Fast Wind Time**

</td><td style="color:#696969;">60 Hz = 100 s, 50 Hz = 110 s (2,500 ft tape)

</td></tr><tr><td style="color:#696969;">**Reel Size**

</td><td style="color:#696969;">NAB 10.5", 7", 5", EIA (cine), DIN ReelTape Max. Length = 3,280 ft (tape thickness 50 μm)

</td></tr><tr><td style="color:#696969;">**Motor**

</td><td style="color:#696969;">Capstan = DC Brushless Motor, Quartz PLL Controlled Direct DriveReel = AC Induction Motor

</td></tr><tr><td style="color:#696969;">**Head**

</td><td style="color:#696969;">Plug in head block with full access to independent head height, tilt and azimuth adjustment

</td></tr><tr><td style="color:#696969;">**Start Time(Time to reach within twice specified wow &amp; flutter.)**

</td><td style="color:#696969;">38.1 cm/s = Less than 0.5 s19.05 cm/s = Less than 0.3 s9.5 cm/s = Less than 0.2 s

</td></tr><tr><td style="color:#696969;">**Wow &amp; Flutter(PEAK WTD, DIN45507, IEC Pub.386)**

</td><td style="color:#696969;">38.1 cm/s = Less than ±0.06%19.05 cm/s = Less than ±0.08%9.5 cm/s = Less than ±0.12%

</td></tr><tr><td style="color:#696969;">**Tape Timer**

</td><td style="color:#696969;">Seven segment LED readout from tachometer/logic measurement circuit; indicates tape time in Hours, Minutes and Seconds.

</td></tr><tr><td style="color:#696969;">**External Speed Control Range**

</td><td style="color:#696969;">-50%, +100% at all speeds (4.8 to 19.2 kHz)

</td></tr><tr><td style="color:#696969;">**VEM Tape Speed**

</td><td style="color:#696969;">+100% with VEM optional accessory and continuous lower speed change accompanying tone change

</td></tr><tr><td></td><td></td></tr></tbody></table>

# Electronics (Measured with AMPEX #456 tape. 0 dBu

0.775 V)=

<table id="bkmrk-line-input-3-pin-xl-"><tbody><tr><td style="vertical-align: top;">**Line Input**

</td><td style="color:#696969;">3-pin XL Type Connector (female)  
Transformerless Active Balanced  
Input Impedance: 10 kΩ  
Ref. Input Level: +4 dBu (0 to +10 dBu), -16 dBu (-10 to -20 dBu)  
Max. Input Level: +30 dBu

</td></tr><tr><td style="vertical-align: top;">**Mic Input**

</td><td style="color:#696969;">3-pin XL Type Connector (female) Transformerless Active Balanced  
Input Impedance: 10 kΩ (20 Hz to 20 kHz)  
Min. Input Level: -70 dBu  
Microphone Impedance: 150 to 10 kΩ  
With Supply Channel (CH1/BOTH/CH2) Selection Switch

</td></tr><tr><td style="vertical-align: top;">**Line Output**

</td><td style="color:#696969;">3-pin XL Type Connector (female) Transformerless Active Balanced (bal/unbal. switchable)  
Output Impedance: 5Ω  
Ref. Output Level: +4 dBu (0 to +13 dBu), -16 dBu (-7 to -20 dBu)  
Load Impedance: min. 200Ω  
Max. Output Level: +26 dBu (bal. load), +21 dBu (unbal. load)

</td></tr><tr><td style="vertical-align: top;">**Bias and Erase Frequency**

</td><td style="color:#696969;">150 kHz

</td></tr><tr><td style="vertical-align: top;">**Magnetic Flux Level**

</td><td style="color:#696969;">MX-55N = 185/250/370 nWb/m (switchable)  
MX-55D = 250/320/510 nWb/m (switchable)

</td></tr><tr><td style="vertical-align: top;">**Frequency Response(Rec/Rep. 0 dB = 250 nWb/m)**

</td><td style="color:#696969;">38.1 cm/s = 30 Hz to 20 kHz ±2 dB (0 dB)  
19.05 cm/s = 20 Hz to 18 kHz ±2 dB (-10 dB)  
9.5 cm/s = 20 Hz to 10 kHz ±2dB (-20 dB)

</td></tr><tr><td style="vertical-align: top;">**Frequency Response(Sel-Rep)**

</td><td style="color:#696969;">38.1 cm/s = 30 Hz to 12 kHz ±3 dB  
19.05 cm/s = 20 Hz to 5 kHz ±3 dB  
9.5 cm/s = 20 Hz to 2.5 kHz ±3 dB

</td></tr><tr><td style="vertical-align: top;">**Distortion (38.1 cm/s, 1 kHz, 250 nWb/m)**

</td><td style="color:#696969;">Less than 0.3%

</td></tr><tr><td style="vertical-align: top;">**Crosstalk**

</td><td style="color:#696969;">MX-55N = min. 55 dB  
MX-55D = min. 50 dB

</td></tr><tr><td style="vertical-align: top;">**Depth of Erasure(38.1 cm/s, 1 kHz, 1040 nWb/m)**

</td><td style="color:#696969;">MX-55N = min. 75 dB  
MX-55D = min. 70 dB

</td></tr><tr><td style="vertical-align: top;">**Rec/Rep Signal-to-Noise Ratio(30 Hz to 18 kHz BPF, UNWTD)**

</td><td style="color:#696969;">MX-55N NAB 38.1 cm/s, 1040 nWb/m = 69 dB  
MX-55N NAB 19.05 cm/s, 1040 nWb/m = 71 dB  
MX-55N NAB 9.5 cm/s, 740 nWb/m = 64 dB  
MX-55N IEC 38.1 cm/s, 1040 nWb/m = 71 dB  
MX-55N IEC 19.05 cm/s, 1040 nWb/m = 68 dB  
MX-55N IEC 9.5 cm/s, 740 nWb/m = 64 dB  
MX-55D IEC 38.1 cm/s, 1040 nWb/m = 72 dB  
MX-55D IEC 19.05 cm/s, 1040 nWb/m = 69 dB  
MX-55D IEC 9.5 cm/s, 740 nWb/m = 65 dB

</td></tr><tr><td style="vertical-align: top;">**Test Signal Oscillator Frequency**

</td><td style="color:#696969;">100 Hz, 1 kHz, 10 kHz Sine Wave, switchable

</td></tr><tr><td></td><td></td></tr></tbody></table>

# Miscellaneous

<table id="bkmrk-power-requirement-10"><tbody><tr><td style="vertical-align: top;">**Power Requirement**

</td><td style="color:#696969;">100/110/117/200/220/240 VAC, ±10%, single phase 50/60 Hz

</td></tr><tr><td style="color:#696969;">**Power Consumption**

</td><td style="color:#696969;">150 VA

</td></tr><tr><td style="color:#696969;">**Operating Environment**

</td><td style="color:#696969;">Temperature: 5 to 45°C, Relative Humidity: 20 to 80%

</td></tr><tr><td style="color:#696969;">**Storage Environment**

</td><td style="color:#696969;">Temperature: -20 to 45°C, Relative Humidity: 10 to 80%

</td></tr><tr><td style="color:#696969;">**Weight**

</td><td style="color:#696969;">30 kg

</td></tr><tr><td style="color:#696969;">**Dimensions (W x D x H)**

</td><td style="color:#696969;">440 x 222 x 488 mm

</td></tr><tr><td style="vertical-align: top;">**Standard Accessories**

</td><td style="color:#696969;">NAB Reel Adapter  
10.5" Empty Reel (MX-55N only)  
DIN 12" Empty Reel (MX-55D only)  
Power Cord  
Fuse 1 A x 2  
Fuse 2 A x 4  
Fuse 5 A x 1  
Fuse 5 A (slow blow) x 1  
Lubrication Oil (PZ9E003)  
Case Foot Operaiton Manual

</td></tr><tr><td style="vertical-align: top;">**Optional Accessories**

</td><td style="color:#696969;">CB-127-S Remote Controller  
ZA-81G-S Stand (with Reel Spacer. Tilt Adjustable)  
ZA-81B-T Stand (without Reel Spacer)  
ZA-81D-S Reel Spacer (for ZA-81B-T)  
ZA-5CG Rack Mount Bracket  
SB-12S Scissors  
ZA-5CU Fader Control Kit  
PB-1AXAS VEM (Voice Edit Mode)  
PCBZA-5CW Proximity Switch Kit  
ZA-5CX Multi Purpose Phone Jack Kit  
ZA-5CL Input Transformer  
ZA-5CM Output Transformer

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