For sale is one new reel to reel calibration /
reference tape
The calibration tape is intended to be used for playback level reference adjustment and Azimuth adjustment according to Studer Revox specifications.
You only need one tape as this contains both Azimuth and playback level reference.
The test tape can be used for all types of tape recorders
running 19cm/s
The tape is recorded on a full refurbished and correct
adjusted STUDER Revox B77 Mk 2 two track machine. Referenced to a test tape
recorded on a STUDER A80 machine.
Frequencies and reference levels are generated by a custom
made automated frequency sequencer with separate Wien bridge generators for
ultra-low distortion.
The actual recording levels are measured by the
integrated AC thru RMS dBm meter section on the sequencer / calibration box for
highest recording accuracy.
Frequency accuracy of the test box is better that 0.5%
and the reference levels are better than +/-0.5 dB
The calibration tape consists of 4 tracks recorded at
19 cm/s ( 7 1/2" / sec ) Half track:
Track
#1
1 kHz
0 dBm 120 sec
257 nWb/m
Track
#2
1 kHz
-20 dBm 60 sec
Track
#3
10kHz
0 dBm 120 sec
Track
#4
10
kHz
-20 dBm 60 sec
Reference tape comes with green / red leader tape for
easy direction identification on a 15 cm spool
The tape is recorded on new BASF LPR35 ( Pyral ) tape.
Note that the Reference tape is recorded “Tale end
out” and need to be rewind to an empty spool before use.
This operation ensures that the test tape is aligned
on the reel according to the tape recorder under tests actual tape feed mechanisms
alignment for maximum precision during the adjustment.
I always recommend storing the Reference tape
“Tale end out” for protection and minimal “print trough”
If other recording speeds are required please contact
me
The Recorder and the test box are not for sale.
Below is a link to my complete adjustment manual for Revox B77
dl.dropboxusercontent.com/u/20432115/Revox%20B77%20mk2%20adjustment.pdf
Remember to add https:// before the link above
Niels
E.E.B.sc