TH121-I-G | 21” NEODYMIUM TAPPED HORN SUBWOOFER, PASSIVE INSTALL VERSION, GREY

TH121-I-G
21” NEODYMIUM TAPPED HORN SUBWOOFER, PASSIVE INSTALL VERSION, GREY

The TH121 is a high-output subwoofer utilizing a 21-inch neodymium driver with a 6.5-inch

dual-layer voice coil for exceptional thermal and mechanical power handling. Its performance is driven by our patented Tapped Horn technology, which is unlike conventional horns or bass

reflex designs, the Tapped Horn uses a driver placed partway down a folded horn path. The

front of the driver radiates directly into the horn's throat while the rear of the driver is vented

through a tap into the horn, closer to the mouth. This configuration achieves acoustic phase

alignment at the horn’s exit, effectively summing energy from both sides of the driver, this

in-phase alignment effectively doubles the radiating surface area of the driver leading to greater efficiency and output than would be possible with a traditional design of the same size. The result is increased output, reduced distortion, and minimized cone excursion under high power, improving linearity and reliability.

The enclosure is constructed from 13-ply Baltic birch with a PolyUrea coating for impact and

environmental resistance. Interlocking skids provide secure stacking with compatible models

such as the TH118XL, SH96 and SH96HO. Touring and install versions include multiple M10

rigging points, while the Extreme Weather variant replaces plywood with fiberglass-reinforced polyurethane panels for maximum durability in harsh conditions.

For optimal system integration, use Danley DNA amplifiers or processors, which offer advanced DSP for precise tuning, protection, and performance optimization.