So, I've been filling speakers with hand fluffed fluff - which is extreemly long winded, until one large bass speaker which I lined with roof insulation, and covered with dacron sheet, which sounded great, but no direct comparrisons to be made.
Then, 6 months ago, i changed all the bass cones and filled some with fluff, some with insulation but didn't get the chance to compare properly. Now the speakers are back (from a job) and i've had the chance to compare with proper, well produced, test music (vocals, double bass, jazz etc), and the insulation version is much clearer, and integrates with midrange better. it seems to 'breath' better, less muffled, so i'm about to embark on some experiments to try all sorts of fills/ linings and would much appreciate any experiences / ideas of things to try. Thick carpet is on the list, and some ribbed spongey underlay is another one to try. (yep i raided the carpet fitters skip!)
Instinct tells me that the cone needs lots of air around it to function properly.
Is the function of fill / lining only to stop standing waves & reflected waves?
I'v got some old transmition lines that are filled with horse hair, and they sound great. should i be out in the feilds chasing horses around with a pair of scissors?
ta
jody