Strange speaker rattle/distortion

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Strange speaker rattle/distortion
Posted on: 25.10.2013 by Alphonso Deitchman
When playing the note A5 on my keyboard (and also the nearby notes) I get an odd rattle sound from one speaker (Wharfedale 9.1). It only happens if the volume is at medium level or higher, and only happens on this particular speaker.

Everything else in the chain has been eliminated. Wires have been switched, playback set to Mono, grille removed etc.

Any ideas?
Lakeesha Storman
25.10.2013
Originally Posted by ProfessorStrangeman
Sounds like something may be internally damaged and that frequency just happens to be the resonant frequency that makes the damaged part rattle.
What he said. What if you change the sound, be it with a software synth or the sound of the keyboard itself to something that may not be as heavy "sounding?" You still get the rattle then?
Wilton Keuning
25.10.2013
Originally Posted by makar1
When playing the note A5 on my keyboard (and also the nearby notes) I get an odd rattle sound from one speaker (Wharfedale 9.1). It only happens if the volume is at medium level or higher, and only happens on this particular speaker.

Everything else in the chain has been eliminated. Wires have been switched, playback set to Mono, grille removed etc.

Any ideas?
Sounds like something may be internally damaged and that frequency just happens to be the resonant frequency that makes the damaged part rattle.
Alphonso Deitchman
25.10.2013		When playing the note A5 on my keyboard (and also the nearby notes) I get an odd rattle sound from one speaker (Wharfedale 9.1). It only happens if the volume is at medium level or higher, and only happens on this particular speaker.

Everything else in the chain has been eliminated. Wires have been switched, playback set to Mono, grille removed etc.

Any ideas?
Alphonso Deitchman
25.10.2013		My keyboard has other synths that don't make the rattle, but the Vibraphone one produces the same problem. I've contacted the vendor about a replacement so I guess I'll hear back on Monday.
Lakeesha Storman
25.10.2013
Originally Posted by ProfessorStrangeman
Sounds like something may be internally damaged and that frequency just happens to be the resonant frequency that makes the damaged part rattle.
What he said. What if you change the sound, be it with a software synth or the sound of the keyboard itself to something that may not be as heavy "sounding?" You still get the rattle then?
Wilton Keuning
25.10.2013
Originally Posted by makar1
When playing the note A5 on my keyboard (and also the nearby notes) I get an odd rattle sound from one speaker (Wharfedale 9.1). It only happens if the volume is at medium level or higher, and only happens on this particular speaker.

Everything else in the chain has been eliminated. Wires have been switched, playback set to Mono, grille removed etc.

Any ideas?
Sounds like something may be internally damaged and that frequency just happens to be the resonant frequency that makes the damaged part rattle.

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