IN TRADE

1/4" Reel-to-Reel

Each Tape is a Full-track Master tape (not a copy) Tapes, recorded to the following Equalization Standards can be ordered:

EIA (1959) Ampex Professional Equipment (1953 to 1958) Ampex Professional Equipment (1959) DIN (1962) EIA Standards Proposal 1015 Ampex Stereo Tapes and Consumer Equipment (1967) NAB (1965) RIAA (1968) IEC (1964) IEC (1968)

Please specify the standard

Duration of each tape is 7 min

Each track is voice announced

The following tracks are included:

Track 1. 1000 Hz at Reference Fluxivity Track 2. 8000 Hz. Coarse azimuth set Track3. 15000 Hz. Fine azimuth set Track 4. 1000 Hz at +12 dB level. It is recorded precisely between Track 1 and Track 3 of a 4-track tape, or between the left and right channel tracks of a 4-track stereo tape. This signal can be used for quick calibration of Reproduction Head height of a 4-track tape recorder. Adjust the Reproduction Head height to obtain MINIMUM reading of the output signal for both channels. Repeat this step and the "Fine azimuth set" step a few times.

The Track position on tape optically measured using Magnetic Field Developer (MFD), which has been designed by GennLab, and an industrial microscope equipped with a micrometer eyepiece

Track 5 to Track 20. Frequency Response Test which is recorded at -10 dB level

Track 5. 400 Hz Frequency Response Test Reference level. Track 6. 31.5 Hz. Track 7. 50 Hz. Track 8. 100 Hz. Track 9. 200 Hz. Track 10. 400 Hz. Track 11. 800 Hz. Track 12. 1000 Hz. Track 13. 2000 Hz. Track 14. 4000 Hz. Track 15. 8000 Hz. Track 16. 10000 Hz. Track 17. 12500 Hz. Track 18. 15000 Hz

More information on http://www.gennlab.com/rtr_tapes.html

P.S. Good luck and please only bid if you are serious and going to pay in full within 3 working days

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