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Link to GennLab 5 Hz RAMM Speed Check Cassette
Link to GennLab 5 Hz RAMM Speed Check Cassette
Link to GennLab 3 kHz Speed and Wow & Flutter Standard Alignment Cassettes
Link to GennLab Speed and Wow & Flutter
         Standard Alignment  Cassettes


Link to GennLab Level Standard Alignment Cassettes
Link to GenLab Level Standard Alignment Cassettes

     Each Cassette Tape (except 5 Hz RAMM and 1 kHz Track Alignment Tapes) is a Full-track Master tape (not a copy). Cassettes are recorded OFF SHELL using an OTARI 0.15" (3.81mm) Reel-to-Reel MX-5050BIII-F-P4 Production full-track tape recorder and professional test equipment from NEUTRIK. The Capstan motor of the tape recorder is controlled by digital Quartz- Locked PLL. This can work at standard speeds with 0.01% accuracy, and at any speed from 1-7/8 to 30 ips using an external clock generator. If required a cassette can be recorded
at 30 IPS.

Reproduction or Playback Head of the tape recorder is a 4-track 4-channel head to measure Level unevenness @ 400 Hz.
PLEASE NOTE. Level unevenness is checked totally across the tape (not along the tape) before recording. Tapes with difference in Level more than 0.4 dB are discarded.

Reproduction Equalization is calibrated using a Constant Magnetic Field Transducer which has been designed by GennLab.
Link to GennLab Azimuth Standard Alignment Cassettes
Link to GennLab Azimuth Standard Alignment Cassettes

GennLab Standard Alignment Cassettes
$65.00 for the first two Frequency Response Cassettes
Link to GennLab Frequency Response Standard Alignment Cassettes
Link to GennLab  Frequency Response
Standard Alignment  Cassettes

Click on the picture for product description and order
Handling of Alignment Tapes.

PLEASE NOTE
                         All test tapes are consumable items. They will not last forever, However careful use will ensure the anticipated lifetime is achieved. Alignment Tapes should always be handled  extremely carefully.
A single Test Tone is recorded on each tape at the Level corresponding
to the Equalization curve.
Test tones need to be recorded on separate tapes.
Firstly: to speed up adjustment process.
(It is faster to change a cassette than to rewind it to find a required portion on the tape),
Secondly: to ensure the safe guard and longevity of the tape which is most important.

The lifetime of any Alignment Tape depends on the number of playbacks and rewinds. The physical pressure from capstan-pinch roller pair and tape guides demagnetizes the tape (it is assumed that you have demagnetized the mechanism of the tape recorder prior to tests).
With a single tone recorded on each tape, every time a cassette is placed in a deck stopped and subsequently removed, the tape should only be continued to play back from that location on the tape from when it was stopped and removed.
When you reach the end of the test signal on the tape, rewind the entire cassette at once
This should be recorded as "1 full pass", and so on up to 50 full passes, which is the normal lifetime of any Alignment Tape.
After 50 passes, accuracy of the recorded signal level of the Level and Frequency Response Tapes is out of specs, and the tape is not usable anymore for fine adjustments.
The Speed tapes are stretched (especially by double-capstan mechanisms), and they give readings lower than actual speed. Speed of decks adjusted using such “tired” test tapes is higher than nominal.
The Stretched Azimuth tapes give unstable and uncertain readings.
Each Tape is a Full-track tape, but it should be played back in one direction.
Use the labeled side of the cassette only.
Change the side of the cassette for Reverse PB adjustments only (Nakamichi DRAGON etc.). Multiple rewinds from one tone to the other tone recorded on the same tape on inferior cassettes found on the market will decrease lifetime of those tapes dramatically and will not achieve normal lifetime expectancy of 50 passes.

Please note, GennLab tapes are  recorded on new TDK, TEAC or AMPEX 472 professional US-made tape.
Click on the picture for product description and order
Click on the picture for product description and order
Click on the picture for product description and order
Click on the picture for product description and order
G e n n L a b
www.gennlab.com

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Customer feedback
Click to view Samples of tape
Each Tape is a Master tape (not a copy).

Thank you for your time and anticipation of your orders!

Regards,

Gennady
Link to GennLab 1 kHz Track Alignment Cassette
Link to GennLab 1 kHz Track Alignment Cassette
Click on the picture for product description and order

OTARI MX5050BIII-F-P4 System

OTARI MX5050BIII-F-P4 System

OTARI MX5050BIII-F-P4 Head Block

OTARI MX5050BIII-F-P4 Head Block

OTARI MX5050BIII-F-P4 Record and Playback Heads

OTARI MX5050BIII-F-P4 Record and Playback Heads

OTARI MX5050BIII-F-P4 Playback Head

OTARI MX5050BIII-F-P4 Playback Head

OTARI MX5050BIII-F-P4 Pinch Roller

OTARI MX5050BIII-F-P4 Pinch Roller

Recording System Cassette side

Recording System Cassette side

Recording System Reel-to-Reel side

Recording System Reel-to-Reel side

OTARI MTR10 Elcaset and Speed Tape Recording Machine

OTARI MTR10 Elcaset and Speed Tape Recording Machine

Click on any picture to enlarge
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