Faulty KEF C4 Sub??


Standard Member
I recently purchased the KEF 1505 speaker package and am running them through a DENON 2310 amp. However, when the sub is switched on, it emits a low volume hum constantly.

I originally had a KEF 3005 set-up in the same room/conditions with no problems what-so-ever.

Could the sub be faulty??
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