In this thread I'll summarize some measurements made to assess the effects of length and gauge of speaker wire on loudspeaker performance. In addition, I'll give a preview of the effect of a new audio enhancement device I invented called the ACD, or aluminum cylindrical diffractor.
All tests were performed with a Zaph ZMV5 monitor (DIY):
All measurements are for sound pressure level (SPL) taken on a horizontal axis at a distance of 1m from the loudspeaker, at a vertical height midway between woofer and tweeter centers. From a theoretical point of view, SPL is the magnitude of the instantaneous pressure (which has both an amplitude and phase in the same sense that an AC voltage has an amplitude and phase). Since its the pressure variation that your ear detects and converts to auditory information, measurements such as these are in fact highly representative of what you will hear.