So i finally got my turn table hooked back up and got a phono preamp. Awesome! But now i'm having mysterious interference, and receiving radio signals on it(!?!?)...
So a while back around black friday i upgraded to The 21st Century
, and bought a fancy pioneer network receiver to go with my "smart" tv and other futuretech gadgets. It rocks and i've been pretty impressed with it, but it didn't have a phono preamp. It took me tons of foot dragging through other money obligations and just general procrastination to finally get one, but i just did recently.
So i hook it up, connect the ground wire, and use some really nice heavy-gauge RCA cables to run it into one of the random assignable RCA inputs on my receiver. Fire it up and... it sounds pretty good. The preamp isn't amazing, but it's good enough for casual listening until i get somewhere to set up my dedicated phono system...
And then i noticed a weird "rumble" noise. It persisted even if the turntable was completely off
(it's a technics 1200, so it has a power switch). Upon turning up the volume a lot on the receiver, i realized not only was i picking up a constant "bupbupbupbupbupbup" type sound, but also the radio
At least part of the rumbling seems to be from my wireless router, which it's within a few feet of... but the further i move it away from that the more other
interference i pick up. There's no position within the reach of the cables that doesn't either have lots of talk radio and other interference, or lots of rumbling/rhythmic popping noise.
So what do i do? how should i position this thing? does it need to be in a lead box? Is a 6 foot RCA cable too long and somehow acting as an antenna? I've never had a problem like this in the past when i've had receivers/preamps/integrated amps that had a built in phono stage which i just jacked straight into. Is this preamp just crap?
The preamp by the way, is basically this
one by MCM, but MCM branded. I'm totally open to buying another one if this one sucks and am open to suggestions. I just planned on using this one until i had more cash laying around... But this is infuriating.