8 Track Cartridge Test Tape with Height & Speed

The 8TT-3 8-Track Alignment Tape is Here. The Best Just Got Better.

With Head Height, Tape Speed

Designed as a modern, accurate replacement for the legendary Nortronics AT-820 alignment cartridge — the industry-standard 8-track alignment tape from the 1970s.

The 8TT-3 8-Track Cartridge Alignment & Test Tape is an original master recording that uses a custom designed transport that accuately records tracks adhering to the 8 track standard allowing for additional adjustments not possible with previous tapes with unique test signals that minimize the need of expensive test equipment allowing for checks and adjustments to be made with nothing more that your ears and a stopwatch. The 8TT-3 includes the following special signals:

• 125Hz signal for head height and crosstalk adjustments 
• A special composite 60hz/1khz signal for tape speed verification using a frequency counter or just a smart phone stopwatch.
• 8Khz tone for easier azimuth adjustments.

This cartridge will allow for the complete adjustment of azimuth, reproduce level and high frequency equalization as well as verifying frequency response characteristics.

The tape includes our exclusive Toggle Tone test signal for easy high frequency adjustment. Our high accuracy process insures consistency and conformity to NAB standards. A convenient usage tally is provided to track play back passes. Each tape is serial numbered and has an associated QC report. This QC report is not simply a frequency chart, but contains actual measurements from the tape ensuring adherence to the NAB standard. Specially prepared back lubricated tape loaded into reconditioned new cartridges with new pressure pads. Printed instructions are included.

This 9:40 min long tape features:

• All signals recorded with equalization and levels in accordance with NAB standards.
• 125Hz signal for head height and crosstalk adjustments
• A special composite 60hz/1khz signal for tape speed verification
• 8Khz tone for easier azimuth adjustments.
• Our exclusive ToggleTone test signal for easy high frequency adjustment.
• All signals on this tape are original master recordings made with calibrated sources using a custom transport.
• A graph of the frequency response of each tape is included.
• Detailed printed instructions are included

If you need a Dolby tone, check out our 8TT-2 alignment cartridge. It has everything the 8TT-3 has plus a Dolby tone.

Precision Verified: Every tape is serial numbered and includes a detailed QC report with actual measurements (not just a generic chart) confirming its adherence to the NAB standard. Detailed easy-to-follow printed instructions are included. 

The result? A perfect, high-fidelity sound that brings your 8-tracks back to life.

The cartridge contains these signals:

500hz @0db

500hz @-10db

8khz Azimuth

125Hz signal for head height and crosstalk adjustments

Composite 60hz/1khz signal for tape speed verification

100hz/500hz/7.5khz ToggleTone (our exclusive tone for high freq adjustments)

1khz tone for wow & flutter checks

500hz @0db (185 nWb/m)

Running time: 9:40

Tolerances:
Level: +/- 0.25db
Frequency: +/- 1db (0.25db at medium frequencies)
Azimuth Angle: +/- 2 min to 90deg

Reference Fluxcivity:
185 nWb per meter

Equalization:
3180/90 uSec (NAB Standard)

Tape speed:
3.75 in./s

Made in the U.S.A.