SWR Goliath 3, Strange Speaker Buzz
I've got a pre-fender SWR goliath 3. The bottom left speaker has developed a slight buzz. Not a hum, or electric noise, more of a mechanical sounding papery buzz that increases with the volume/bassiness of the amp. Certain frequencies seem to cause it to buzz more. The louder and bassier the amp is set, the louder the noise becomes. The speaker still produces the bass sound fine, its like the buzzing is overlaid. There's no visual damage to the cone, however i've noticed firmly pressing on a spot towards the outer rim of the cone seems to muffle the buzzing to the point that it disappears. Anyone seen a speaker behave like this? I wonder if its easily repaired. Thanks.