clearaudio AC076 Stroboscope Test Record User Manual
- June 6, 2024
- clearaudio
Table of Contents
Stroboscope Testrecord
User manual
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The Clearaudio Stroboscope Testrecord satisfies the highest demands for an
exact speed adjustment for turntables.
Dramatic sound improvements can be reached only with exact calibrated speeds.
Optimal adjustment for turntables
To adjust the exact speed, please choose the side for 50 / 60 Hz, or the other
side for the use with the Speed Light first.
If you choose the side without the Speed Light source, you can use the regular
light source for the installation, either 50 Hz (outer scales) or 60 Hz.
The scales are graduated in three different reading options: 33.3rpm, 45rpm
and 78rpm (starting from the outer diameter).
Please place the Stroboscope Testrecord on your turntable platter and start the engine of your turntable. The big advantage of the Clearaudio Stroboscope Testrecord is, that you can place your cartridge onto the strobe record, while measuring the speed, as there are grooves provided on the disc. This means, for the first time a real time speed analysis is possible under realistic circumstances.
If you have the impression that the horizontal lines move on the scale, you should set or readjust the speed of the motor again.
- If the lines move clockwise, the speed is too fast.
- If the lines move counter clockwise, the motor speed is too slow.
Please correct the speed on your motor or turntable until you have the
impression that the lines stopped moving. After that you have reached the
exact speed, you can enjoy the full potential of your vinyl collection
again.
If you use the Speed Light (AC039) you can reach an even higher or more accurate adjustment, completely independent of the power line or frequency of your country. As well, the 300 Hz calibrated light, used as an external light source is completely independent from possible power line fluctuations, which could influence the result by regular light. The 300 Hz of the Speed Light are generated by a stabilized quartz oscillator and permit a very exact adjustment. Please put the Stroboscope Testrecord with the fine lines upward on your turntable. Here you also have the possibility to choose between two different speeds. With the outside scale you can detect the speed of 33 Hz and with the inside scale you can detect the speed of 45 Hz.
Again, the big advantage of the Clearaudio Stroboscope Testrecord is, that you can place your cartridge onto the Stroboscope Testrecord, while measuring the speed, as there are grooves provided on the disc. This means, for the first time a real time speed analysis is possible under realistic circumstances.
Press the button of the Speed Light source and place it parallel over to the scale and adjust the motor or turntable speed until the horizontal lines do not move anymore.
Tip
As more accurate your turntable speed is adjusted, as better the overall sonic
appearance of the record playback will be!
It is mandatory to check the speed several times through out the year, to
ensure that other influences are not minimizing the sound quality.
Please enjoy your vinyl records now even more!
Yours Clearaudio team
Clearaudio electronic GmbH
Spardorfer Str 150
91054 Erlangen
Germany
Phone: +49 9131/40300100
Fax: +49 9131/40300119
www.clearaudio.de
www.analogshop.de
info@clearaudio.de
Handmade in Germany
Clearaudio Electronic accepts no liability for any misprints.
Technical specifications are subject to change or improvement without prior
notice.
Product availability is as long as stock lasts.
Copies and reprints of this document, including extracts, require written
consent from
Clearaudio Electronic GmbH, Germany.
2021
© clearaudio electronic GmbH, 2021-07
Made in Germany