The QSC AD-C.SUB is a passive, 6.5-inch Dual Voice Coil, Small Format Ceiling Subwoofer, with up to 100W / 20V, max SPL 100dB, sensitivity 86dB and 45Hz-150Hz frequency response.
Modern Acoustics Hammer12p - professional passive subwoofer 15 inches with power 450 W RMS / 1800 W Peak, frequency response 32 Hz - 200Hz (± 10dB), 129dB max SPL (peak), sensitivity 97dB. Cabin: black color, with two handles for easy carrying and speaker holder Dimensions (H x W x D): 600 x 560 x 420 Weight: 24,3 kg
Focal 1000 IWSUB Utopia, passive closed-back in-wall subwoofer with 3 x 6.5 (16.5cm) Bass with ‘W’ cone and recommended amplification power up to 100 - 750W at 8Ω and 200 - 1500W at 4Ώ, 83dB sensitivity and 40Hz – 2.5kHz bandwidth at +/-3dB. Works with 1000 IWLCR UTOPIA
Focal Littora 1000 ICW SUB10, indoor/outdoor, in-wall/in-ceiling subwoofer with 10 inch speaker driver for use in yachting and humid spaces. The recommended amp power is between 100 – 300W at 8Ω with 90dB sensitivity and 25Hz-500Hz frequency response.