Originally posted by: Viper GTS
I did build it myself.
Parts alone would be around $400, perhaps closer to $500 if you built only one. I built two (well, I haven't finished the second yet because I have no buyer for one), which helped reduce the cost. Sonotube for instance runs ~$120, most places will only sell you it in 12' sections.
That of course is just the sub, you'd need an amp. $125 will buy you a 250W plate amp, I went all the way & bought an 850W rack mount amp & bridged it across paralleled voice coils. The driver is rated at 750W but is well known to go above that so my amp matches it well.
It is easily the match of most $1500 sub/amp combos.
Viper GTS