Keep it standard. Tighten the contacts in the DIN sockets, and they will be fine. 2x 0,75mm2 cable is more than adequate - that's also what the original cables are. Martin

Thanks for sharing Martin! Could it be the original cables have degraded so bad it sounds that much quieter? I have two sets of original wires, and the difference compared to the new 2mm² ones I made is night and day. I don't care much for the numbers but I can hear a big difference. Aftermarket female plugs that fit to the original speaker terminals actually broke apart inside. Wire clamping metal pice was forged together with the part that makes the actual connection. It all came loose after a little while. So, certainly happy with the SpeakOn connectors on the speaker side, feels solid, and perfect fit with no cabinet modification to the S45-2.