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OTARI MTR-90 series II Reel to Reel Tape Machine 24 Trk


Condition: Very Good. This top notch professional multitrack deck was taken from a professional recording facility and was in use up to the day it was pulled for sale. It is functionally and cosmetically in great condition.

Specifically, the heads condition breaks down as follows: playback heads are at 50% / record at 60% / and sync at 60 %. The heads have at least one, probably two relaps left, and it will last another several thousand hours of use before a relap is necessary. Everything calibrates perfectly.

We also have an Otari 24 trk MTR-90 Mk I, available at a discount price.

First, a note from SV….TAPE IS NOT DEAD!!! Tape will continue to be manufactured and available regardless of the recent scare. And dumping tape onto digital systems will still be the BEST sound for many more years. Viva la Analog!

Now for the description…
OTARI MTR-90 series II. This machine is in very good condition both cosmetically and functionally, heads relapped once, with approximately 500 hours of use since. Comes with original manual, and the CB-147 logic control/track-arming remote, on rolling stand. Though this deck does not come with the Otari ‘Time Code Sync Card’, it has been modified to offer a back panel Time Code ReShape toggle switch.

Any questions can go directly to Gary@soundsandvisions.com

Serial No. 18690646

Here are some specifications from Otari.com:
Otari’s MTR-90 II has become the industry standard for user-friendly, reliable, great-sounding analog multitracks. MTR-90 Series II machines are found in studios, broadcast and film/ post facilities all around the world. This late-generation two-inch 24-track features full microprocessor-controlled transport functions and enhanced electronics. Smooth tape handling is ensured by the design’s lack of pinch rollers, which can degrade wow-and flutter performance. Symmetrical, constant tension "pushes" rather than pulls tape past the heads.

MTR-90 II delivers fast response and highly accurate tape location. Up to 14-inch reel-capacity with automatic reel-size sensing enables one full hour of recording at 15 ips. (Standard speeds are 15 and 30 ips, with up to 20% varispeed. A simple modification allows operation at 7.5 ips.) A full-function Remote Session Controller features separate record-ready and monitor functions, varispeed control, master switching, cue and transport controls. Options include the EC-101 Chase Synchronizer, which provides slave operation against external SMPTE/EBU timecode.

SYSTEM HIGHLIGHTS:
"Industry Workhorse," with proven track record in hundreds of facilities worldwide
Pinchroller-free tape transport for fast yet gentle handling of valuable multitrack masters
Two-inch cast-alloy deck plate for maximum ruggedness and stability
Single-card/single-channel plug in audio electronics for enhanced reliability
Up to 20% Internal Varispeed, and +50/ -100% External capstan speed control
Three-trimmer/three-position bias selection for fast tape changes.
Gapless, seamless punch in/out for tight insertion recording/overdubs
Transformerless balanced inputs and outputs for transparent audio recordings
Optional 10- or 99-memory Autolocators, with timecode synchronization
Optional internal timecode chase-lock synchronizer module

MTR-90 MkII SPECIFICATIONS:

TRANSPORT
  • Tape Width and Tracks (25.37 mm) 1", 8 tracks (50.8 mm) 2", 16 tracks greater than 2", 24 tracks
  • Heads Plug-in head blocks with easy access for indepenent head azimuth adjustment
  • Motors 9600 Hz PLL capstan motor, microprocessor controlled, 2 servo 1/2 HP DC reel motors
  • Reel Size Up to 14” NAB (35.6 cm) with reel size auto sensing
  • Tape Speeds 30 ips / 15 ips (high version) 15 ips / 7.5 ips (low version)
  • Speed Deviation Max. +-0.05% from beginning to end of reel
  • Wow and Flutter 30 ips max. +-0.04%; 15 ips max. +-0.05%; 7.5 ips max. +-0.08%
    (Peak weighted per DIN 45507)
  • Start/Stop Time Max. 600 ms at 15 ips (to play speed from stop)
  • Fast Forward/Rewind Time Min. 85 seconds for 2,400 feet (760 m)
  • Head Shield Plate Motor driven (automatic or manual operation)
  • Drive System Pinchrollerless direct drive capstan system with +20% control.
  • Constant tension servo-controlled reel motors
  • Pitch Control +20% continuous variable control, percentage readout with 0.01% precision

  • ELECTRICAL - Power AC 100/117/220/240 V +10% single phase 50/60 Hz


  • ELECTRONICS
  • Line Input Active balanced transformerless (optional transformers)
  • 10k Ohm bridging +4 dBu nominal input level
  • Line Output Active balanced direct coupled (optional transformers)
  • 10 Ohm source impedance +28 dBu maximum output level into 600 Ohm or greater (Min. Load 150 Ohms)
  • Equalization 30 ips AES; 15 and 7.5 ips NAB or IEC switchable
  • Operating Level 250 nWb/m, all measurements made with AMPEX 456 tape at operating level except where specified
  • Overall Frequency Response Record/Reproduce
    +2.0, -3 dB at 250 nWb/m 30 ips: 50 Hz-22 kHz (0 vu)
    15 ips: 30 Hz-20 kHz (0 vu)
    7.5 ips: 30 Hz-16 kHz (-10 vu)
  • Signal to Noise Ratio 1040 nWb/m
  • 3% 3rd Harmonic 24 track 30 ips, AES: min. 72 dB
  • Distortion to Noise Floor 15 ips, AES: min. 69 dB
    (unweighted) 15 ips, IEC: min. 71 dB
    . 8/16 track 30 ips, AES: min. 70 dB
    15 ips, NAB: min. 67 dB
    15 ips, IEC: min. 69 dB
  • Distortion Max 0.5% third harmonic at 1 kHz at 250 nWb/m
  • Crosstalk 24 track at 1 kHz: ;min. 55 dB
    8/16 track at 1 kHz: min. 57 dB
    8/16/24 track from 220 Hz to 16 kHz: min. 43 dB
  • Erase Effect Min. 75 dB
  • Bias Frequency 257 kHz bias, 86 kHz erase
  • Punch-in/Punch-out 80 msec to stabilization; gapless and noiseless inserts with automatic monitor switching (30 ips)
  • PHYSICAL DIMENSIONS
    Weight Approx. 440 lbs. (200 kg)
    Size 43" x 30½" x 30"



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