sp-10 noise

there is noise occur when set the volumn at 1:00 position.
can here noise 4 inch away from the speaker.

although it is acceptable, hope can reduce half to the orginal.
any high hand can give suggestion? thanks.

pcb only!

thanks william.
where is the new place?

everythingis good but noise.

image 6bi

will go to william's office try to fix it!(also try to improve)