Tape Recorder Recording Portion Alignment Disk

Tape Recorder Recording Portion Alignment Disk

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MASTER CD STEREO Wide Band Tape Recorder Frequency Response STANDARD ALIGNMENT DISK Version 2.00

This disk, priced at $20.00 in combination with any CD player will replace a precision audio signal generator which can cost thousands of dollars.

This Disk contains minimum necessary signals to test and adjust the Recording portion of any tape recorder to “flat” Frequency Response balance within wide 40 Hz - 15 kHz frequency range

The following procedure must be followed.

Connect your CD player output to the input of the tape recorder under test
Select the particular brand and type of tape you plan to use
Using a blank reel (cassette) of this tape, perform the following series of adjustments in the following sequence:
First, adjust the recording head azimuth alignment using 15kHz tone monitoring recorded signal
Next, adjust the bias control for optimum bias using 400Hz tone monitoring recorded signal
Then adjust the noise balance control for minimum noise (no signal)
Next, adjust "0" level using 400Hz/0dB tone monitoring recorded signal
Then, using 400Hz, 15kHz and 40Hz -20dB tones recorded on the CD adjust the recording equalizer of the tape recorder for most uniform 40Hz-15kHz frequency response monitoring recorded signal
Finally, adjust "0" level using 400Hz/0dB tone monitoring recorded signal

The Master Disk is recorded with 0.002% Total Harmonic Distortion (measured @ 400Hz) using industrial recording and test equipment.

Each master track is recorded individually

5 tracks ~62 minutes including:

Track 1. Procedures
Track 2. 400 Hz, 0dBref (-12 dBmax), Stereo, IN PHASE, 30 seconds
Track 3. 400 Hz, -20dBref (-32 dBmax), Stereo, IN PHASE, 20 minutes
Track 4. 15 kHz, -20dBref (-32 dBmax), Stereo, IN PHASE, 20 minutes
Track 5. 40 Hz, -20dBref (-32 dBmax), Stereo, IN PHASE, 20 minutes

You may order a disk with your "favourite" frequency range
                        GennLab
40Hz-15kHz Tape Recorder Alignment CD
                      Version 2.00
Disk only $25.00
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1. Special CD Sender cardboard letter envelop. No tracking. Delivery target from 10 to 25 working days.$7.00
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Purchase price for the Disk $25.
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