RCF art310 or EV zlx12p? in Helix Posted February 16, 2018 Hard to tell how's the sound on the front of house when you're on stage :) I believe that the sound coming out of it is really good but the main advantage that RCF gave me was the dynamics, it feels like I'm playing on a real guitar cabinet and that is something i did not experience in the past with my older yamaha fullrange speaker. I did not adjust anything on my helix, the FR speaker only have volume knob and a boost button :) Order one online, try it, if you don't like it, you can still send it back and get a refund. In my country I do not have the option of reimbursement. Your opinion has been very useful, I will wait to compare RCF vs. Alto. However, I believe that RCF is a quality option. Thank you!