1/4" 7.5ips Full Track Test Tape with Dolby

** Now with 4 reel options, default is a refurbished small hub reel**

The RTT-1D is a 7.5ips full track master recording test tape that contains all the signals necessary to verify essential tape parameters such as Head Azimuth, Playback Level and Frequency Response to ensure that your machine is performing at its best and within factory specifications. The RTT-1D is the same as our RTT-1 with the addition of a 400 Hz Dolby tone recorded Dolby level and is perfect for recorders with built-in Dolby noise reduction as well as with external Dolby noise reduction units made by Teac , Sony, Panasonic, Advent, and many others.

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. Printed instructions are included.

Features:

• All signals recorded with equalization and levels in accordance with NAB standards.
• Full track recording for use with mono, stereo (2 track & 4 track) and quad tape machines.
• All signals on this tape are original master recordings made in real time directly from calibrated sources.
• A graph of the frequency response of each tape is included.
• Our exclusive ToggleTone test signal for easy high frequency adjustment.
• A convenient usage tally is provided to track play back passes.
• Detailed printed instructions are included.

4 reel options are available:

• A high quality refurbished small hub 7" reel - This reel is free of any wobble and warpage and does not have any markings, residue or labels (except for our label). This is the default selection and is included at no charge.
• A new high quality small hub 7" reel for an additional $3.95
• A new large hub 7" reel for an additional $12.95
• A new large hub 5" reel ideal for Nagra, Uher and other portables for an additional $3.95

The tape contains the following signals:

700hz @-10db

(these tones are at -10db) 

12.5khz Azimuth 700hz/10khz ToggleTone (our exclusive tone for high freq adjustments)

15khz
12khz
10khz
7.5khz
5khz
2.5khz
1khz
500hz
250hz
100hz
50hz

700hz @0db (185 nWb/m)
400hz @Dolby level

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

Reference Fluxcivity:
185 nWb per meter

Equalization:
3180/50 uSec (NAB Standard)

Tape speed:
7.5 in./s

Made in the U.S.A.