audio, and this is/was huge for me(got a sweet FM acoustics 800A amplifier, a 100W pure class A tube amplifier that needs some love, that puppy uses handwinded transformers, straight till 120khzor 150khz and weights a nifty 210lbs) currently tinkering on some new speakers. my challange is to create an impressive bass/soundfield from relative small speakers. i'm going compound and measured some speakers who seem to have the right t/s parameters to suit my bass-needs. I want to use an active crossover, (using it on my car too, and i love it) got a MLSA pulse measuring device to measure the speakers, (frequency response, waterfall, determine t/s paramaters) basicly i enjoy anything which involves a tinkering/creating part, i spent a lot mountainbiking/biking, building furniture. biking takes a large amount of my usual day. Just finished a 29er salsa mamasita, build from ground up.
This is one of my latest project, the sub. it does what it should do.
http://rc.stuurmijmail.nl/homemadesubs/5.JPG