Not just an active 21-inch subwoofer, the Thunder-KMT21 I is also a proper instrument for the management and processing of the audio signal. At the heart of the Thunder-KMT21 I are 2 channels of 2400 W @ 4Ω in Class D – one dedicated to the 21" woofer and the other connected to a speakOn output on the rear panel – allowing different configurations in combination with any of our passive loudspeakers such at single mid-high speaker, entire columns of line arrays or other passive subs as reinforcement of the mid-low frequencies in larger applications.
With a 21" woofer, the Thunder-KMT21 I is ideal for medium to large applications where high quality, powerful sound is required.
Type : Active subwoofer
Transducers : 21" neodymium magnet driver
Frequency Response (1) : 30 Hz – 150 Hz (-6 dB)
Maximum SPL (2) : 136 dB peak
Amp Module : 2 ch. switch-mode, class D
Output Power : 2 x 2400 W @ 4 Ω
HANDLING AND FINISHES
Dimensions (W x H x D) : 555 x 572 x 763 mm (21.8 x 22.5 x 30 in) (3)
Weight : 44 kg (97 lb)
Material : Wood
IP Rating : IP40(4)
Notes for data:
(1) With dedicated preset
(2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 8 m then scaled at 1 m
(3) Included 17 mm (0.7 in) removable rubber feet
(4) IP43 with K-AMPCOVER.