This shows one, two, four and eight T39, 20 inch wide, S2010 loaded, 2.83v.
One, two, four and eight T39 24 inch wide, 3012LF loaded, 2.83v.
Note that the response of the S2010 groupings and 3012LF groupings aren't all that different. What differs is their displacement limited power handling. The S2010 can handle a 28 volt input, so add 20dB to each trace for a maximum SPL figure. The 3012 can take a 56 volt signal, which means you can add 26dB to each trace to figure maximum output. That 6dB difference means one 3012LF loaded cab can produce as much output as two S2010 loaded cabs.
Titan 39 or Tuba 30? Here's both, with a S2010 driver. Titan is better above 38Hz for live-sound, T30 better below 38Hz for recorded.
The Kappalite 3012LF, in narrow and wide T39.
The 3012LF and 18Sound 12NLW 9300, both in a 20 inch wide T39:
These charts compare the T39 to various commercial and DIY subs. All charts are 1m/2.83v.
The Mackie S218s and a 16" wide T39, 3012LF loaded.
Here are two 30" wide 1x12 T39s and a Lab Sub. The Lab is 26 cubic feet, the two T39s total 26 cubic feet.
The same pair of T39s and the Pi 12, which is even larger than the Lab:
And a 20" wide 1x10 T39 and the EAW 2x15 SB250ZR.
For bassplayers who think they know what big bottom is, think again. This is a 30" wide 1x12 T39 and a typical sealed cab 8x10:
Here are four 14 inch wide T39, loaded with S2010s, total pack space 25 cubic feet, and a Lab Sub, pack space 26 cubic feet.
T39 loaded with S2010, 14 and 20 inches wide, and the Mackie SWA1501.
Comparisons of the different models with each other and commercial cabs.
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