I have done a fair bit of work with speakers testing the effects of LF when changes are done to power cords, cables, etc. The changes are easily heard and most efficacious.
When Bill Dudleston of Legacy Audio entertained my idea of rewiring the Whisper with 10 Ga Clarity Cables, and added his own idea of Clarity Caps (no business relation to Clarity Cable), he was not expecting much. However, the bass measurements showed a 2dB change! That's big shift in performance for bass!
Subwoofers are subject to the precise same influences as other speakers. The qualitative difference in performance is easily heard when enhancements/improvements are done. It's nonsense to suggest a subwoofer would not benefit from upgrades such as internal cable and caps.
Do the upgrade; I think you'll be quite pleased with the result. YMMV
When Bill Dudleston of Legacy Audio entertained my idea of rewiring the Whisper with 10 Ga Clarity Cables, and added his own idea of Clarity Caps (no business relation to Clarity Cable), he was not expecting much. However, the bass measurements showed a 2dB change! That's big shift in performance for bass!
Subwoofers are subject to the precise same influences as other speakers. The qualitative difference in performance is easily heard when enhancements/improvements are done. It's nonsense to suggest a subwoofer would not benefit from upgrades such as internal cable and caps.
Do the upgrade; I think you'll be quite pleased with the result. YMMV