I built my K-horns:
MDF
veneer
glue
nails
screws
cloth
AlK crossovers,
K-33-E woofers
Altec 1005B horns
Altec 288 drivers
JBL 2404 tweeters
stain
varnish
speaker wire
black spray paint
paid to have lumber cut to specs (complex angles as you all know)
sand paper
wood clamps
MY TIME
(countless other costs)
total price 3k+
I doubt the $500 price is correct.
jweed