![Audio Cassette Speed Calibration Test Tape AND Level Calibration Tape - Free Shipping Worldwide - Test Tapes - Audio Cassettes - Duplication.ca Audio Cassette Speed Calibration Test Tape AND Level Calibration Tape - Free Shipping Worldwide - Test Tapes - Audio Cassettes - Duplication.ca](https://www.duplication.ca/images/D/testtape-speed_800.jpg)
Audio Cassette Speed Calibration Test Tape AND Level Calibration Tape - Free Shipping Worldwide - Test Tapes - Audio Cassettes - Duplication.ca
![idk which test tape is right, would be any compatible with 3000hz such as my Sony TC-KE 400 S?. i wanna adjust the correct speed. : r/cassetteculture idk which test tape is right, would be any compatible with 3000hz such as my Sony TC-KE 400 S?. i wanna adjust the correct speed. : r/cassetteculture](https://i.redd.it/st9mvbt2nb6c1.jpg)
idk which test tape is right, would be any compatible with 3000hz such as my Sony TC-KE 400 S?. i wanna adjust the correct speed. : r/cassetteculture
![Magnetic Reference Lab 241-570-480-104 1/4" 3150 Hz Flutter & Speed Test Tape (15"/s, 4 Min. Long) | Full Compass Systems Magnetic Reference Lab 241-570-480-104 1/4" 3150 Hz Flutter & Speed Test Tape (15"/s, 4 Min. Long) | Full Compass Systems](https://www.fullcompass.com/common/products/lgr/412809.jpg)
Magnetic Reference Lab 241-570-480-104 1/4" 3150 Hz Flutter & Speed Test Tape (15"/s, 4 Min. Long) | Full Compass Systems
![How to make a 440 Hz Speed Adjustment Test Cassette Tape - fix your deck, walkman, boombox - YouTube How to make a 440 Hz Speed Adjustment Test Cassette Tape - fix your deck, walkman, boombox - YouTube](https://i.ytimg.com/vi/rUwerhvjuDU/maxresdefault.jpg)