Systems ListDIYTC Sounds LMSR12 Dual 15" VMP

System typePassive Radiator
DriverTC Sounds LMS-R 12
Driver Size12 "
Number of drivers1
Internal volume2.4 ft3
External volume3.38 ft3
Dimentions (Width Height Depth)19 " 15 " 20.5 "
Weight90 lbs
Native Tuning Frequency18 Hz


This system uses a single 12" TC Sounds LMS-R driver with 2 TC Sounds 15" VMP passive radiators. The enclosure is the smallest one that will reliably fit most 15" drivers and 2 of the 15" VMP's. The limitation with this system is the active driver excursion since the dual 15" VMP's have so much extra cone area and displacement compared to the single 12" driver that they never were close to their limits.

This system provides great all around performance and if finished and tweaked into a final product could offer exceptional bass output from a small enclosure.