Goregorebeast

I recently purchased a rotel rp-2300 and my current AV receiver Yamaha htr-6230 did not come with a phono input so I purchased a fjb-200x phono pre-amp to get the table up to line. The only issue I am having is that when I plug the red and white RCA into my AV receiver I only get sound sound from both speakers when I only have the white cable plugged in. It works but I'm sure I'm getting only the left side in both speakers. As soon as I plug the red cable in the sound goes to one side. I tried multiple ports and still the same issue. I purchased a new RCA cable and nothing changed. It couldn't be my AV receiver because I tested the RCA ports with another device. Also I don't think it's the turntable because when I plug into the RCA ports with no preamp it goes to both speakers it's just very low volume. I'm just confused as to why it goes to both speakers when only the left is plugged in? Before I purchase another pre amp I was wondering if anyone had this issue before and if there is an easy fix?

I recently purchased a rotel rp-2300 and my current AV receiver Yamaha htr-6230 did not come with a phono input so I purchased a fjb-200x phono pre-amp to get the table up to line. The only issue I am having is that when I plug the red and white RCA into my AV receiver I only get sound sound from both speakers when I only have the white cable plugged in. It works but I'm sure I'm getting only the left side in both speakers. As soon as I plug the red cable in the sound goes to one side. I tried multiple ports and still the same issue. I purchased a new RCA cable and nothing changed. It couldn't be my AV receiver because I tested the RCA ports with another device. Also I don't think it's the turntable because when I plug into the RCA ports with no preamp it goes to both speakers it's just very low volume. I'm just confused as to why it goes to both speakers when only the left is plugged in? Before I purchase another pre amp I was wondering if anyone had this issue before and if there is an easy fix?