Penelinfi
Senior Member
- Joined
- Apr 22, 2021
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So I've just noticed a very faint ground loop style buzz coming from a woofer, only really notice it from 50cm and closer. I thought it may be seepage through the amp when turned off. It wasn't.
Unplug speaker leads from speaker - buzz still there!
I also unplugged a few powered devices in the near vicinity thinking it could be magnetic coupling from their transformers - still buzzing!
It's only from this one woofer speaker - no noise from tweeter, no noise from other speakers which are right next to it.
I'm thinking :
- Maybe magnetic coupling from power cable in that area?
- Other source of magnetic field in the area (I've noticed buzzing from this corner before, though not from a speaker)
- Reflection off of the cone - but if this was the case, I'd hear the buzz from somewhere else? Plus I was blocking the space while listening to it.
The crossover is one inductor on the woofer, notch filter on the tweeter in conjunction with first order cap, ability for bi-wire/amp, terminals currently linked, if that helps.
Unplug speaker leads from speaker - buzz still there!
I also unplugged a few powered devices in the near vicinity thinking it could be magnetic coupling from their transformers - still buzzing!
It's only from this one woofer speaker - no noise from tweeter, no noise from other speakers which are right next to it.
I'm thinking :
- Maybe magnetic coupling from power cable in that area?
- Other source of magnetic field in the area (I've noticed buzzing from this corner before, though not from a speaker)
- Reflection off of the cone - but if this was the case, I'd hear the buzz from somewhere else? Plus I was blocking the space while listening to it.
The crossover is one inductor on the woofer, notch filter on the tweeter in conjunction with first order cap, ability for bi-wire/amp, terminals currently linked, if that helps.