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A rumble is a continuous deep, resonant sound, such as the sound made by heavy vehicles or thunder. [1] In the context of audio reproduction rumble refers to a low frequency sound from the bearings inside a turntable. This is most noticeable in low quality turntables with ball bearings. Higher quality turntables use slide bearings, minimizing ...
Linn presented an important challenge to that by claiming that the source (i.e. the turntable) was the most important part of the system. [1] Ivor Tiefenbrun has talked about how Sondek derives from the term “sound deck” to emphasise the revolutionary concept that the turntable, the “deck”, is responsible for the sound quality. [9]
With the development of thin film technologies it was possible to keep the Q factor high enough, leave out the crystal and increase resonance frequency. Ladder type bandpass filter based on FBAR resonators. The difference of resonance frequency of resonators 1 and 2 determine the frequency range of frequencies to be passed.
To cause resonance, the phase of a sinusoidal wave after a round trip must be equal to the initial phase so the waves self-reinforce. The condition for resonance in a resonator is that the round trip distance, 2 d {\displaystyle 2d\,} , is equal to an integer number of wavelengths λ {\displaystyle \lambda \,} of the wave:
In the CD era (post 1983), the top line Nakamichi products were termed the "Dragon." The Dragon-CT turntable ("Computing Turntable") automatically adjusted for off-center holes in records by moving the platter in two dimensions. The Dragon CD playing system has special mechanical damping to prevent vibrations of the CD and holds multiple CDs.
Linn was founded by Ivor Tiefenbrun to produce the Sondek LP12 turntable. The company's logo is the simple geometric representation of the 'single point' bearing which was the unique selling point of the LP12 turntable. Hamish Robertson designed the Ariston RD11 in 1971 with Castle Precision Engineering Ltd machining many of the parts.