The Thunder-KS4 I is a compact active subwoofer featuring a 2x18” cone drivers and a powerful 4x 2500W @ 4Ω audio amplifier module with built-in DSP. The audio power output connectors allow the Thunder subwoofers to drive a wide range of K-array passive loudspeakers. Compatible with midrange loudspeaker and other passive subwoofers, the self powered Thunder subwoofers with DSP are designed to be the core devices in K-array sound reinforcement systems.
Specifications
General
-
Type:
Active subwoofer
-
Transducers:
2 x 18" neodymium magnet woofer
-
Frequency Response:
30 Hz – 150/450 Hz (-6 dB) crossover dependant
(1) -
Crossover:
DSP-controlled, Low Pass @ 150 Hz, preset dependant
-
Max SPL:
141 dB
(2) -
Coverage:
Omni
-
Connectors:
Line Input
2x XLR-F analog / AES3
Line Output
2x XLR-M Link analog / AES3
Speaker Output
2x SpeakON NL4
Mains
powerCON TRUE1 TOP
Networking and Data
1x RJ45
4x USB-A -
Nominal Impedance:
4ohm subwoofer
-
Controllers:
Wi-Fi dedicated Mobile APP
K-framework3 via wired Ethernet connection -
Built-in DSP:
Input gain, routing matrix, delay, full parametric IIR filters (Peaking, Shelving, Hi/ Lo pass, Hi/Lo Butterworth), Onboard preset, Remote monitoring
Handling and Finishes
-
Dimensions (W x H x D):
1106 x 500 x 580 mm
(43.5 x 19.7 x 22.8 in)(3) -
Weight:
60 kg (132.3 lb)
-
Material:
Polyurea coated birch plywood
-
Colors:
Black/White/Custom RAL
Regulations
-
IP Rating:
53
(4)
Amplifier
-
Amp Module:
4-ch Class D
-
Output Power:
4 x 2500W @ 4ohm
(5) -
Power Consumption:
600 VA @ 8 Ω load, Pink noise, 1/8 rated power
- (1) With dedicated preset
- (2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 1 m.
- (3) Included 17 mm (0.7 in) removable rubber feet
- (4) In case of permament, long lasting installation in critical environments (swimming pools, beaches, yachts..), we recommend to further protect the subwoofer. Contact K-array directly to discuss best protection practices.
- (5) CTA-2006 Standard single channel driven
New materials and design are introduced into existing products without previous notice.
Downloads
Thunder-KS4 I Datasheet
WEB APP Quick Start Guide
THUNDER KS MK1 SUBWOOFERS USER'S MANUAL
Amp-to-speaker matching table
KS4 Layout
Thunder-KS4 I BIM
CRESTRON HOME plug-in
CRESTRON plug-in
Q-SYS Plug-in
Rev 1.0.0
Dante Ready Activation Guide
Ver 0.1
CE Declaration of Conformity
osKar System Update 1.6.8
KFramework3 v1.8.6 Windows
Ver. 1.8.6
KFramework3 v1.8.6 Osx
Ver. 1.8.6
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