Tuba 60 is the whopper of our subwoofer line, and not just by
dint of its size. Like in the familiar fast food slogan you can build your
Tuba 60 'your way'.
For an unexcelled combination of extension and sensitivity you can build a
60 x 30 x 30 inch monster loaded with two LAB 12 woofers. It offers performance
good enough for even the top ranks of pro-touring sound, as seen in this SPL
chart, which compares the 2x12 loaded T60 to the 2x21 loaded EAW 2001:

Or you can build a 60 x 30 x 15 inch 'Slim' version loaded with a single LAB 12:
The low profile of the 1x12 allows placement in front of or even beneath stages,
and when it's time to pack up optional built-in wheels and handles make the T60
its own hand truck.
And you can build something in between the two extremes, like a 60 x 30 x 27 inch
cab
loaded with LAB 15 woofer, with the response shown here:
What's most important is that you can build this pro-touring concert sound
capable sub woofer for as little as about $400 and get performance that is the
equal of
commercial subs retailing for up to ten times the price.
Construction Degree of Difficulty: 5
Performance Quotient: 10
Suggested Audience Size, 2x12 loaded:
1 cab up to 200; 2 cabs up to 500; 4 cabs up to 2,000; 8 cabs up to 6,000;
12 cabs up to 10,000
Equivalent Retail Value: $2499 to $4499, depending on cab size and driver
complement
Recommended Tops: DR200, DR250, DR280, DR300, OmniTop 12, OmniTop 15
Plans are $19.95, delivered within 24 hours as email attachment in MS Word
format. 22 Pages, 41 diagrams. PDF available on request.