I recently purchased a couple of Mackie Thump 15" powered speakers and in going through a pre-gig setup test in a small room in my home I am hearing an unacceptable hum from both speakers. Also this is the 1st time I use powered speakers so this maybe the norm.

My setup is as follows:

> Laptop 1/8 jack into Soundcraft Mixer into(2T RTN)via RCA stereo jacks

> Soundcraft Mixer to Powered Speakers via 1/4 jack into a 1/4 female to XLR adapter

> I am plugged into house a/c power through two separate outlets (one for each speaker)and have no fans or lights on in the room that may cause some feedback.

My initial thoughts are that maybe the room is too small for an accurate test and/or the adapters may be causing the problem. Also I am going to use my new setup on a gig this Friday just for a comparison. I figure it is an hour gig so I can put up with the humming for an hour.

Any thoughts?

THANKS!

Danny C.
www.dannycampo.com
https://www.facebook.com/pages/Danny-Campo/379776252109306?skip_nax_wizard=true

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