[Rampage]

Anybody do it?  In a community like HLP there has to be at least a couple of people.

R

[Scourge of Ages]

Details? Like sound effects, music, stereo equipment, or PC audio?

[Rampage]

Hardware, like speakers, amps, DACs, tubes, ham radio, etc.

R

[Nuke]

i do some diy electronics but nothing audio related.

[LordMelvin]

just make sure your amp goes to 11 and everything else will come together.

[Nuke]

mine goes to 12 but i keep it on 3.

[z64555]

I fixed an old Jukebox about a year ago, does that count? 

[Dark RevenantX]

Considering my knowledge of electrical engineering, I know theoretically how someone would do it, but I can't imagine a DIY solution being better than a high-end professional one, or even a medium-grade consumer one.

[z64555]

Depending on the skill of the DIY'er and availability of parts, the end-product can range from cheap junk to high-end grade perfection... but since everyone is not a Bob Vela of electronics, electromechanical parts, and corresponding tools, this usually means a DIY project will yield a crappy to OK-ish product. 

[swashmebuckle]

Fiddling with sound systems seems like a pretty cool hobby if you are doing it for its own sake and to learn stuff, but if your real goal is to get better sound on the cheap then I'd first look at moving your speakers to a better sounding room if one is available, then positioning them properly in that space, then maybe doing some acoustic treatment.