Test Tape For Studer Revox A77 B77 PR99 4 Track 19 Cm/s
Item History & Price
| Reference Number: Avaluer:17719492 | Featured Refinements: Studer A80 |
| Custom Bundle: No | Model: A77 B77 PR99 A80 |
| Type: Tape Reel | Modified Item: No |
| Brand: for Revox | Country/Region of Manufacture: Denmark |
For sale is one new reel to reel calibration /reference tape
Below is a link to my general tape deck andjustment guide:https://1drv.ms/b/s!AsJVYXV-6PHPge4be4SqxPpM3dqrggThe document is located on my 1-drive. Just copy the link in your browser
Every tape is shipped with its own calibration tag as seen on the picture
The calibration tape consists of 4 tracks recorded at 19 cm/s ( 7 1/2" / sec ) :NAB 50/3180µs EQ
...>Track #1 1 kHz 0 dBm 120 sec 257 nWb/mTrack #2 1 kHz -20 dBm 60 secTrack #3 10kHz 0 dBm 120 secTrack #4 10 kHz -20 dBm 60 sec Reference tape comes with green / red leader tape for easy direction identification on a 13 or 15 cm NEW reel.The tape is recorded on new BASF LPR35 ( Pyral ) tape. The tape is recorded on a 4 track machine The calibration tape is intended to be used forplayback level reference adjustment and Azimuth adjustment according to StuderRevox 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 recordersrunning 19 cm/s (7, 5 IPS) 4 track
I check and calibrate the reorderevery month to ensure maximum performance.My B-77 were rebuilt bymyself in 2016 with all the electrolytic/tantal capacitors changed. Allsemiconductors replaced and op-amps upgraded were possible. Pinch roller arereplaced and The trimmer-pots are changed to new modern types.The tape transport motorshas been fully dissembled fully cleaned and lubricated with (PDP-65) andreadjusted according to the Studer service manual. New bearings are fittedI adjust the Biasaccording to the tape manufactory’s recommendation for initial bias adjustmentfollowed by adjustment of the record equalizer and minor adjustment of the biasusing pink-noise and a Bruel&Kjær 2144 real-time audio spectrum analyzerfor maximum flat frequency response. This is the best way to obtain superlinear frequency response.This deckhas an actual Wow & Flutter level at 0.04 % DINFrequenciesand reference levels are generated by a custom made automated frequencysequencer with DDS generator for ultra-low distortion and level precision.The actualrecording levels are measured by the integrated two channels AC thru RMS dBmmeter section on the sequencer / calibration box for highest recordingaccuracy.The actualrecording levels are monitored by a BRUEL & KJAER Level Recorder Type 2307Frequency accuracy of the test box is better that0.01% and the reference levels are better than +/-0.5 dB
Open-reel Calibration Tapes are supplied“tail end out” for best storage. Mount them on the takeup side, and rewind themimmediately before use. After use, leave them in the “tail end out”position again for removal and storage for protection and minimal “print trough”. This operation ensures that the test tape is alignedon the reel according to the tape recorder under tests actual tape feed mechanismsalignment for maximum precision during the adjustment.
If other recording speeds are required please contactme The Recorder and the test box are not for sale.
Below is a link to my complete adjustment manual for Revox B77https://1drv.ms/b/s!AsJVYXV-6PHPsincAUjMkM8ENWVX
NielsE.E.B.sc
Below is a link to my general tape deck andjustment guide:https://1drv.ms/b/s!AsJVYXV-6PHPge4be4SqxPpM3dqrggThe document is located on my 1-drive. Just copy the link in your browser
Every tape is shipped with its own calibration tag as seen on the picture
The calibration tape consists of 4 tracks recorded at 19 cm/s ( 7 1/2" / sec ) :NAB 50/3180µs EQ
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 recordersrunning 19 cm/s (7, 5 IPS) 4 track
I check and calibrate the reorderevery month to ensure maximum performance.My B-77 were rebuilt bymyself in 2016 with all the electrolytic/tantal capacitors changed. Allsemiconductors replaced and op-amps upgraded were possible. Pinch roller arereplaced and The trimmer-pots are changed to new modern types.The tape transport motorshas been fully dissembled fully cleaned and lubricated with (PDP-65) andreadjusted according to the Studer service manual. New bearings are fittedI adjust the Biasaccording to the tape manufactory’s recommendation for initial bias adjustmentfollowed by adjustment of the record equalizer and minor adjustment of the biasusing pink-noise and a Bruel&Kjær 2144 real-time audio spectrum analyzerfor maximum flat frequency response. This is the best way to obtain superlinear frequency response.This deckhas an actual Wow & Flutter level at 0.04 % DINFrequenciesand reference levels are generated by a custom made automated frequencysequencer with DDS generator for ultra-low distortion and level precision.The actualrecording levels are measured by the integrated two channels AC thru RMS dBmmeter section on the sequencer / calibration box for highest recordingaccuracy.The actualrecording levels are monitored by a BRUEL & KJAER Level Recorder Type 2307Frequency accuracy of the test box is better that0.01% and the reference levels are better than +/-0.5 dB
Open-reel Calibration Tapes are supplied“tail end out” for best storage. Mount them on the takeup side, and rewind themimmediately before use. After use, leave them in the “tail end out”position again for removal and storage for protection and minimal “print trough”. This operation ensures that the test tape is alignedon the reel according to the tape recorder under tests actual tape feed mechanismsalignment for maximum precision during the adjustment.
If other recording speeds are required please contactme The Recorder and the test box are not for sale.
Below is a link to my complete adjustment manual for Revox B77https://1drv.ms/b/s!AsJVYXV-6PHPsincAUjMkM8ENWVX
NielsE.E.B.sc
