Lemme guess... now you're as jaded as I am?
I dunno if your bass addicted (still talking about the audio type), I used to get normal speakers, make shitty filters for em, and put them in the bottoms of buckets firing down... cheap subwoofers ftw!
My first car had 2 15's in the boot and actually flexed the boot lid... it also made 2 women orgasm I am proud to say It was a 1979 Gen1 Honda Prelude... The stereo very literally cost more then the car...
Me and my mate sometimes go to his work too and set up their most expensive speakers (they're an audio/lighting company, work for a lot of bands and events) and see how much shit we can shake... that's always fun (speakers alone are worth something like $250k)
I made this: (it's a couch)
and of course there is my current car, which i just had to buy a $650, 25kg, 900CCA battery to power everything
I have owned god knows how many subs and amps, but most of my left over shit is now installed into friends cars
I would consider myself bass addicted