Hi everyone. First post. Need a little help. It’s easy to give advice telling others what they should buy. Money solves a lot of problems. I don’t have any. Now that I’ve shared that I need down and dirty...get by... in a pinch, kinda advice on how to make things work on the extreme cheap. Problem - bass guitar line out into board farts and doesn’t sound good. Need suggestions on how I can improve a bad situation. Gear - Fender P Bass into SWR LA15. Line Out from Amp through TRS to Mixer TRS. Mixer is Studiomaster diamond series 12/2 (analog). Mixer sends to EQ then Crossover using sub sum out to single Bag End 15” subwoofer. Cross over is set 150hz below to sub the rest to the mains (FOH only) Bag End 12-c speakers. I tried yanking out the bottom to make the farts go away. Didn’t really effect it much regardless. I don’t think the farts are because the speakers.. I think it’s something to do with the signal path. The farts are there weather it’s a 15’ TRS or a 100’ TRS. I set the gains really low at the board inputs but I really don’t think that did much to make the farts go away. I also turned the LF in the channel all the way off... while it shaped the sound.. the farts stayed consistent. It farts using the big E string open or barred. Non of the other strings make the fart, leading to my reasoning it was frequency.. but it may just be the signal strength due to my wire path? I’m not convinced my line out from the LA15 is balanced. The manual says use a sheilded patch cable for the line out... would a different cable be better? I also have a TRS transformer to XLR balance adaptor.