Did you compare the 8 ohm models against the identical 4 ohm (or 2ohm, as the case may be) models? The 8ohm model is tuned to run at 8ohms, and sound the same as the 4 ohm models, when looking at the same model of sub. Although, true 8 Ohm subs are a rare bread nowadays. You usually can only find 4ohm DVC models anymore, short of going special order.
I never got so far as to rewinding my own coils. I bet rewinding has a huge impact on sonic output. Something I would like to try at some point. I'm sure I can scrape up something for dirt cheap with smashed coils, and give it a go someday.
I just have a good ear for SQ, and happen to understand how to set up a system, so got recruited for SPL stuff as well. I also ran live sound for bands, and have helped record, produce, mix and master albums.
ya bro i was comparing them by their intensities on the low frequency sounds (10HZ to 43HZ), some of my clients last time entered
sound off competitions, me as an installer on their set-ups I need to be there also in the event, the first month we lost only by
two votes
so im observing the judges the way they judge on the intensities cause i know our set-up have a lot more power than the
winner on that event, ours have 6 pcs. 12" inch DVC (4ohm+4ohm) 6 pcs. 1000W double inverters on each amp. plus the mids and the
high stuffs, my client entered the crawling bass category, so after the terrible loss
i kept thinking of the situation why and how
did we got beaten by only 4 pcs. 12" subs:shadedshu, the owner was so pissed
(epeen thing
) by the judges, for me as his installer i am
humiliated too on that event
cause im the one who plannned, tuned and made the whole set-up on his expense, the next day i decided to redesign everything (fueled by rage
) I converted and rewinded each and every speaker to
a (2ohm+2ohm) load to maximize everything, installed a second 200 ampere alternator, one amp has 2 channels on one speaker DVC (2+2)
last time its (4+4) on one amp, replaced the crappy 1 FARAD powercaps with a 100 ampere audio battery, one week of box tuning and testing, on the
next month we entered again, damn im nervous on the results
same category and same everything, thank god we finally won and dust
off the one who beat us in the past competition
, seems like the judges are measuring thier DB meters on the low frequency range,
cause the moment I lowered the resistances and tune it on a lower frequencies on everything we have higher passmark score on the
judges, and one thing i hate about that competition
, the judges use thier own testing CD bro, so meaning we cannot use our edited
music (bass enhanced) to ride on our sub set-up (clever freaks:shadedshu)
So i finally concluded (just my opinion basing on my experience
) that the lower the impedance the better response on the lower frequencies, the higher impedance the better
response on the higher frequencies.