Pure Sine Wave 30Hz for Ten Hours

Description

The Pure Sine wave at an extremely low frequency 30hertz. The audio is designed as a test tone for audio engineers and enthusiasts wanting to check out the low frequency capabilities of their sound systems. Many will discover their speaker do not faithfully reproduce such a low note. This may be due to low cut filters added by sound system designers to prevent system damage. This can harm speakers so be careful. 192kbps mp3 format