I've just recorded this from my tape deck. The 440Hz sound you can download from you tube. About recording make sure your tape deck is properly adjusted the speed must be accurate. If your not sure about your source then there are many for sale on Ebay. Here's the link of a 440Hz sound ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vqBdiH6eu8Q.html
All My other cassette tape become chipmunk after i play this one long duration 1hours reel tape from pop artist album, someone tell me why this suddenly happen and how to fix
In tape head there are 2 screws. To adjust the head try to adjust the screw with a spring. In adjusting this is trial and error method each small turn either counter or clockwise you need to stay focus in listening the sound if it is muddy then try the other side until sound is more clearer. Make sure the head is always clean before tweaking.
First thing you need to do is to check the trimmer it is always located near the motor circuit but some of them are in the back part of the motor or inside the motor.
@@Woodys_Hobbies So we have to find it by luck. I really don't know what to buy. Direct drive, belt drive or boombox with FM/LW/MW, 3 head, double with 4 track synchro dubbing or single cassette deck, Full auto stop with all transport functions and now speed adjustment.