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Noise/hum from speakers?!

overhere, muokattu 8 Vuodet sitten.

Noise/hum from speakers?!

Padawan Viestejä: 60 Liittymispäivä: 7.9.2009 Viimeisimmät viestit
There is a small noise or hum coming from the speakers when no sound is playing, this is even when the signal cables are detached. It's only audible when you're really close to the speakers. What is this?
ilkka-rissanen, muokattu 8 Vuodet sitten.

Re: Noise/hum from speakers?!

Yoda Viestejä: 2564 Liittymispäivä: 23.3.2009 Viimeisimmät viestit
Hi,

That is the background noise of the amplifier(s). All amplifiers (including amplifiers used with passive speakers) have some amount of noise which is then emitted through the drive units at certain level, depending on the gain structure of the signal path. Our products are typically specified to have less than 10 dBA SPL or less than 5 dBA SPL self generated noise in free field @ 1 m on axis. This level is so low that you need a quiet room and close distance to be able to hear it.
overhere, muokattu 8 Vuodet sitten.

Re: Noise/hum from speakers?!

Padawan Viestejä: 60 Liittymispäivä: 7.9.2009 Viimeisimmät viestit
Nothing to worry about then, I was just unsure since I couldn't recall if I ever heard these noises with my previous pairs of Genelec's. Thanks for the help Ilkka, always appreciated.