Thing is that cables carry current. The higher the current, the higher the inductance. The higher the inductance, the more interference with nearby cables and also the more attenuation of high frequencies.
Coiling cables also increases inductance. Bottom line: phono can be together, interconnects can be close together if they have good shielding, speaker cable should be kept well away from both of the above, AC power cords are poison and should intersect everything else at a right angle.
Coiling cables also increases inductance. Bottom line: phono can be together, interconnects can be close together if they have good shielding, speaker cable should be kept well away from both of the above, AC power cords are poison and should intersect everything else at a right angle.