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OTARI Products

Buy Otari Products

T/REDS™ 2" Universal

Available Online
Replacement capstan and idler rollers for all OTARI MTR-90/100.

These rollers are now manufactured in one style only but are supplied with special set screws which allow them to be used with all MTR-90 series machines. They may be safely rotated on the capstan shaft to minimize rotational error and optimize flutter performance.

PRICE REDUCED 20%
T/REDS rollers
Download PDF

Black/REDS™ 1"

Available Online
Recommended for all DTR-900 & Mitsubishi 1" digital recorders.

High performance designed to take full advantage of the higher wind speeds available on the fast winding OTARI & Mitsubishi digital machines.

Limited quantity - PRICE REDUCED 30%
Black/REDS rollers
Download PDF

Quartz/Pyrex Lifter Sleeves

Available Online
A pair of centerless ground & polished quartz/pyrex sleeves for your MTR-90. Harder than chrome steel means longer life and less wear and tear on your tapes. Guaranteed accurate high speed tracking.

Easy install with provided instructions.

__Quartz Pyrex Lifter Sleeves___

Replacement Swingarm Tension Springs

Available Online
Replace old, fatigued springs on your MTR-90.

Set optimum, tension and keep it that way. Quality tempered music wire means longer spring life and stability.

Pkg. of (2)
Swingarm return springs
Download PDF

Motor Driver Power Transistors

Available Online
Replacement power supply and motor driver amplifiers. High voltage and current handling. Our house part numbers - manufactured by ON Semiconductor.

Automatic quantity discount when you purchase.

p/n: XB2552P (PNP rep. 2SB552)
p/n: XD2442N (NPN rep. 2SD552)
 
MDA transistors

Re-Cap your MTR-90 power supply

eMail us!
Six direct replacement Computer Grade electrolytic capacitors. Metric sized with just enough elevated capacitance and voltage rating for longer life and improved performance.

Made for us in the USA by United Chemi-Con.

Call for Info
Note: all values may not currently be available - please contact us for information
Power supply capacitors

Capstan Motor Alignment Collar

Available Online
Tired of seeing that MTR-90 high frequency instability?

The Alignment Collar locks into the transport's deck plate.Strengthens the motor mounting and makes the capstan azimuth & zenith adjustable. Easy installation w/ no deck modification.

Try it for 30 days. If you don't agree it's amazing, send it back for a full refund!

PRICE REDUCED 10%
"Capstan Alignment Collars for the MTR90's work great,
never thought I could achieve such a perfect tape path! Thanks!"

Greg Snow
Fredonia University, NY
"After spending countless hours and over $2,500.00, with a certain company in San Francisco, our MTR-90's tape path was still far from perfect and I was frustrated. I discovered the Capstan Alignment Collar at the PrecisionMotorWorks website and for a mere $375.00, I purchased and installed the CAC and "TONE DANCE" is gone.

Finally a company made sense... A must have for "the perfectionist".

Sheldon Zaharko
The Factory Studios, B.C., Canada

Capstan alignment cpllar

Does your MTR-90 have tape path problems?

This item is a sure cure!

Servo-Disc Motor Kit for Otari & Mitsubishi professional recorders

eMail us!
Heavy duty, USA made, direct replacement motor kit for the O.E.M. Yaskawa disc motor (Japan). Superior current handling capacity. Fits all MTR-90 /100 / DTR-900 & Mitsubishi Capstan motors.
Servo disc motor kit
Download PDF

Head Shield Motors

eMail us!
Direct replacement Head Shield Motors for the OTARI MTR-90. Easy install with instructions provided.
Very limited quantity
Head shield motor
Download PDF

Unitized HardArms™

Available Online
Don't throw your money away! The best replacement arm costs less.

At last swingarms done right! Engineered and built to be as close to a single, solid piece of metal as is possible. Straightness is guaranteed within .003" end to end in both planes.

Back in stock with plenty available!
HardArms / MTR-90 swingarms
Download PDF

EMC Music Mastering Heads 2" - 24 Track

eMail us!
Extended Response. Extended Life. Ultra-low distortion.

We are EMC's exclusive representative & sales agent to the music recording industry.

Limited availability
EMC 2" magnetic heads
Download PDF

Product prices are shown at our online store: Shop_PrecisionMotorWorks

Download: Our recommended MTR-90 Set-up / Alignment Procedure.pdf

Ampex Products

Buy ATR-100 Products

Replacement Control Panel Overlay

Available Online
The fastest, easiest way to give your ATR-100 a face lift.

Instructions and everything you'll need for removal of the old panel and installation of the new are provided.

Permanent factory colors on 25 mil LEXAN.

On sale - 40% off
Control panel overlay
Download PDF

ATR-100 PC-control panel w/ VariSpeed & Search-to-Cue

A great looking, USB interface for fully controlling your ATR-100 from your PC desktop. Opens on top of your mastering applications and includes a fine resolution vari-speed and search-to-cue all in one compact package. Now, you can have everything you've wanted for your ATR-100 with the convenience of centralized desktop control.
This item will be available in the spring of 2010 exclusively from MDI PrecisionmotorWorks. Stay tuned!
Send us an email now & we'll gladly put you on the early notification list.
PC Control demo
"Click on" the image for a
detailed "look"...

Capstan with Optical Encoder

Available Online
Simply the best available for your ATR. Guaranteed low flutter <.02% din pk. @ 30 ips (<.015% typical).

The others claim it - We'll prove it !

Yout trade-in is requested.
ATR-100 Capstan

Timer Idler Assembly

Available Online
Guaranteed timing accuracy and concentricity with low flutter. Low noise bearings. The best you can buy for your ATR-100.
Your trade-in is requested.
ATR-100 tacho roller

Complete Tape Guide Assemblies - "ready to go"

Available Online
1/4": p/n: ATR.TG.25

1/2": p/n: ATR.TG.50

ATR-100 tape guide - 1/2"

Tape Guide Bearings

Available Online
Precision abec class 5 or 7 - for all rebuildable ATR-100 tape guides

p/n: 626ZZ.A5.NS

Note: Qty. (2) bearings required for 1/2" guides
Ball bearings

Non-rotating TFF Scrape Flutter Filters for the Ampex ATR-100

Available Online
Non-rotating, floating, teflon elements with adjustable zenith for accurate tape tracking - extremely low coefficient of friction. As the tape moves across the elements it pulls away molecular level particles of teflon. This process actually serves to "lubricate" the tape path thereby reducing tape shedding.

- No low frequency flutter component
- No low frequency noise or "tone" generation
- Patent Pending

1" - 2trk.(top photo) p/n: ATR.TFF.SFF.1
1/4" - 1/2"(bottom photo) p/n: ATR.TFF.SFF.5

Sold as a set of (2)

ATR-100 scrape flutter filters -1"
ATR-100 scrape flutter filters -1/2"

Quartz/Pyrex Lifter Sleeves

Available Online
MUCH harder than the common chrome sleeves! This means longer wear for less money.

Centerless ground and highly polished for accurate tracking.

Instructions provided for easy install.

ATR-100 Quartz- Pyrex lifter sleeves

Molded Accessory Tray

Available Online
This item is a must!

Exactly replaces the flat panel on the left side of your ATR-100 deck. Keep pens, edit blades etc. where you need them and out of the tape path!

Made by AMPEX and originally offered as an OEM option.

ATR-100 accessory tray

Input-Output Extender Board

Available Online
A simple, elegant solution to the ATR-100 I/O module calibration problem.

How do you make adjustments to the electronics while they're sitting inside the overbridge? THIS is how you do it.

Strong, machined aluminum supports and a high-quality circuit board.

Hint: If you've never calibrated your ATR100's I/O modules, they are not calibrated. Period.
ATR-100 I/O service extender board
Download PDF

EMC - ATR series Music Mastering Heads 1/2" - 2 Track

eMail us!
Extended Response - Extended Life - Ultra-low distortion.

We are EMC's exclusive representative & sales agent to the music recording industry. Simply the BEST!

ERASE - p/n: EMC.ER.5
RECORD -
p/n: EMC.REC.5
extra PLAY -
p/n: EMC.PL.ER.5

"Jeff -

I installed the EMC ATR-100 heads that we bought from you on the ATR that we bought from an eBay seller and while I did have several problems with his machine your heads were perfect. This is our first set of EMC heads and I am very pleased with the results......

Regards!

Kim Stallings
Sony Music Studios / NYC"
EMC magnetic heads for ATR-100
Download PDF

AMPEX ATR-100 O.E.M Maintenance & Shop manual

Available Online
THE ORIGINAL - taken from the LAST, published version. Provided as a searchable PDF on CD or Download (155mb).

Sorry, printed version is no longer available.

p/n: CD: ATR.100.MANUAL.PDF_CD
p/n: downLoad: ATR.100.MANUAL.PDF_DL
ATR-100 Shop Manual

Lot's more for the ATR-100 at our online store!

Download: ATR-100 Info - PDF

Tools for the Tape Path

Buy Tools

Head Alignment Reference flat

Available Online
Ultra-Precision machinist's parallel. Made in the USA from high quality, thru hardened tool steel and flat ground on 4 sides. For gauging & setting tape path & head alignment.

A must for all transport alignment.

Cautionary note: metal laminated heads are relatively soft, so before alignment check, it is wise to cover the head gap with a strip of 1/4" or 1/2" splicing tape only. This will reduce the possibility of any surface damge. Also, be sure to demagnetize the bar before each use. When completed, clean (with HR&R) and demagnetize the heads.

Head alignment tools

Tape Path Gauge Block for Set-up of MTR-90 tape path

Available Online
Gauge Block designed with 1/2" tool steel base for stability and rigidity, enabling accurate set-up & maintenance of tape path height & parallelism. An amazing tool for problematic MTR-90 transports.

Only one left to purchase. Price reduced (a lot)
Rental unit always available. (USA only)

eMail us!
Transport alignment tools
Download PDF

Precision Spring Scales

Available Online
Swiss made, quality scales with "Zero tare", for setting critical tape path tension. Available in a wide range of values.

Values below are in stock.

p/n: #41000 1000 gram (MTR-90 set-up)
p/n: #80005 5000 gram (Studer)
Precision spring scales
Download PDF

Stubby Wrench Sets

Available Online
Quantity of 7, well made, 12 point, forged pieces. Fully polished. Stubby length for getting to those tight spaces.

Molded plastic carrier. USA made.

Metric Set - p/n: TLS.SWS.MET.7
SAE Set - p/n: TLS.SWS.SAE.7
Open end wrench set

Magnetic parts picker w/ LED light

Available Online
The LED light, an extension length of 32 inches and a strong rare earth magnet makes this by far the best we've ever found. Comfort grip, will grab and hold nearly 8lbs while actually enabling you to see what you're trying to grab.
A must for every tape recorder tech's toolbox.
Magnetic picker

Extendable Inspection Mirror

Available Online
Need to see around corners and under the chassis? This item does it and the back end has a small rare earth magnet enabling you to pick-up that tiny screw you lost. Extends to 19 inches.
Another must for every tape recorder tech's toolbox!
Inspection mirror

Head, Red & Roll™ Cleaner (HR&R)

Available Online
This is what you want... The amazing cleaner for everything in your tape path.

"The Right Stuff", HR&R is a professional audio/video and all around shop cleaner. A proprietary blend of ozone safe, azeotropic hydroflurocarbons (HFC's), HR&R super cleans and degreases safely without the risk of rust or corrosion.

The only industrial duty product available to the audio professional. Non-toxic and non-flammable.
Ships safely - Non-hazardous & D.O.T. unregulated.

Head, Red & Roll Cleaner is available now. To order: "Click here"

For a limited time, a sample (1/2 fl.oz.) of HR&R will be included with your order for other merchandise ($25.00 or more) .
Tape path cleaner
Download:
HR&R-MSDS.pdf

MRL - Reference Alignment Tapes

Available Online
We've kept it simple. We recommend and sell only what we consider the most useful and cost effective versions of the MRL tapes - the one's we use in our own shop - and we sell them at a discount.

For most applications, we recommend the two-speed, 11 minute tapes.
Available in: 1/4", 1/2", 1" and 2"
Our recommended test tone pattern: 1khz, 100hz, 4khz, 10khz and 16khz
Record levels: 250nWb/m (+3) and 355nWb/m (+5.5)

Pricey, yes..... but without the appropriate MRL tape, you're not recording, you're guessing!

Always on sale at our store - 10% off retail
MRL alignment tapes

Bearings and lubricating oils for Tape Recorders

Bearings, lubricating oil and mechanical components

Available Online
In stock - a low-noise, precision bearing for virtualy every tape recorder application. No matter how obscure...Far too many to list here.

Got a bearing part number or a specific machine application ? "Click" the envelope and send us a preformatted email inquiry. We'll get back to you shortly.

eMail us!
Oil and lubrication requirements are very specific. Using the wrong oil in your application can be disastrous. Always use the manufacturer's recommended lube or check with someone who understands the compatibility issues before making a substitution.

We've got the right lube for all your Otari & Studer plain bearing motors.

You can buy bearings & lubrication at "Shop PrecisionMotorWorks"
Ball bearing selection
Otari lubricating oil
Studer lubricating oil

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