TA-110 Vibration measurement

The effect of the rubber damping properties is evident from the Vibration Measurement chart below

The armtube was mounted on the Brüel & Kjær Mini Shaker 4810, which was fed with a wideband pink noise signal. The vibration level was measured with a miniature Brüel & Kjær Accelerometer 4374 and a spectrum analyzer set to 1/3-octave resolution.

When taking the measurement uncertainty into consideration, the two armtubes show almost equal vibration levels, apart from the interval 1kHz to 4kHz (upper midrange/lower treble).

As it is well known from the Fletcher-Munson curves, this is the interval where the ear is most sensitive, and this interval is also very important for a high quality music reproduction.