Problems hearing panning effects, MBox and Roland DM20's

[Kn1ghtsh4de]

I have a DigiDesign MBox, ProTools 6.1 LE, and a pair of Roland DM20 studio monitors. When I pan a track to the right, the track gets progressively weaker until it gets to 100% right, and then you can't hear it at all... through the monitors. In the headphones, it sounds just like it's supposed to. Does anyone know what the problem could be? Let me describe the way my wires go just in case I have something wrong.

My monitors have 4 wires to them (that I am using): red/white RCA on the right, a black that goes from monitor to monitor, and the power cords. I have the RCA's from the right monitor going to a single RCA to TRS adapter which is plugged into the TRS 1 jack on the back of the MBox.

Now here's something interesting I just noticed: when I pan a sound all the way to the right when the RCA to TRS adapter is in TRS 1, I can only hear it out of the headphones (and it is all the way to the right). When I plug it into the TRS 2 jack, the right channel will be audible in the monitors when panned all the way right but when I pan it all the way to the left, you can only hear it in the headphones like the first situation.

I'm pretty new to all of this, so it's possible that I've made a mistake somewhere in the wiring?

Thanks

 

[charger]

Sounds to me like the jacks are TRS and not stereo. So you are effectively sending one channel of audio to both speakers. Try using one cable from TRS 1 to the left speaker, and one cable from TRS 2 to the right speaker. Buy some TRS to RCA cables (or TS to RCA, nothing is gained from the TRS cables if you are using RCA on the other end).