MIX Pro controller Best connection to Behringer EP2500 EQ

What is the best connections to my Behringer EQ?
I am not a professional, I only do family events and have purchased the DJ Control Pro.
I have a Behringer eq that feeds into behringer amp.
My older controller gemini cdm3600 has the connection on back same as my EQ. (XLR Balanced connectors).
The MIX V Pro does not. It only has the (L)(R) RCA audio connectors.
My EQ also has both XLR and large 1/4 single stereo connector.
I purchased 1/4 Male to Dual RCA Female connector.
Then I connected the two left/right RCA outputs from MIX Controller to the EQ.
With both RCA connected the sound is not good.
With one RCA (removed WHITE) the sound is better.
Thank You for any help..
I am not a professional, I only do family events and have purchased the DJ Control Pro.
I have a Behringer eq that feeds into behringer amp.
My older controller gemini cdm3600 has the connection on back same as my EQ. (XLR Balanced connectors).
The MIX V Pro does not. It only has the (L)(R) RCA audio connectors.
My EQ also has both XLR and large 1/4 single stereo connector.
I purchased 1/4 Male to Dual RCA Female connector.
Then I connected the two left/right RCA outputs from MIX Controller to the EQ.
With both RCA connected the sound is not good.
With one RCA (removed WHITE) the sound is better.
Thank You for any help..