Teufel Ul 20 Mk2 scratchy speakers but bass is okay, is it the amplifier or are the speakers defective?

I've finally tested these Teufel speakers after a long time and noticed the scratching when playing music and I'm wondering why? What could be the cause?

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Transistor3055
1 year ago

This can be caused by a deformation of Coil lie.

This is what happens when you completely overload the speaker:

  • much too loud music, so that the coil strikes in the magnet and deforms/shaping
  • or inadmissible high power (watt) the coil “grills” or overheats, release or melt adhesives
  • or with false (too small amplifiers) turned too far, so that the loudspeaker has received “uncompromising” distorted rectangle signal, which also generates heat in the oscillating coil

Tip:

Once carefully press the membrane when it is “short/cracked”, the loudspeaker (=swing coil) is broken. Here at YouTube well explained:

https://youtu.be/wHzvzlhcNts?si=Ikt7o_JH3ParJqES

Good luck!