Thunder-KS1 I
The Thunder-KS1 I is a self-powered subwoofer from K-Array, housing a 12-inch neodymium woofer in a compact polyurea-coated birch plywood cabinet. An onboard Class D amplifier module rated at 4 x 1500 W at 4 ohm, combined with built-in DSP and multiple speaker outputs, makes it the drive unit for K-Array passive loudspeaker systems in live-event and fixed installation contexts.
Specifications
- Type: Active (self-powered) subwoofer
- Transducer: 1 x 12-inch neodymium woofer
- Frequency response: 35 Hz to 150 Hz / 450 Hz (-6 dB, with dedicated preset)
- DSP crossover: Low-pass at 150 Hz, preset dependent
- Maximum SPL: 134 dB peak (crest factor 12 dB, measured at 1 m)
- Amplifier: Class D, 4 x 1500 W at 4 ohm
- Line inputs: 2 x XLR female (analogue / AES3)
- Line outputs: 2 x XLR male link (analogue / AES3)
- Speaker outputs: 2 x SpeakON NL4
- Mains connector: powerCON TRUE1 TOP
- Network / data: 1 x RJ45, 4 x USB-A
- Dimensions (W x H x D): 500 x 350 x 440 mm (19.7 x 13.8 x 17.3 in), including 17 mm rubber feet
- Weight: 21.6 kg (47.6 lb)
- Enclosure material: Polyurea-coated birch plywood
- IP rating: IP53
- Finishes: Black, white, custom RAL
Applications
Used as the powered hub of a K-Array system, driving passive mid-high speakers and passive subwoofers from its onboard amplifier channels via SpeakON outputs. The integrated DSP, RJ45 networking, and K-Array Connect mobile app enable remote configuration and preset management. Suited to clubs, theatres, auditoriums, houses of worship, live venues, and flexible installed audio systems that require compact amplification and signal routing in one enclosure. The IP53 rating supports light-weather exposure during live events or semi-sheltered installations.
Standards and compliance
IP53 rating: protected against dust ingress and water spray up to 60 degrees from vertical.
Frequently asked questions
How many passive speakers can the Thunder-KS1 I drive?
The unit has two SpeakON NL4 speaker outputs and four amplifier channels rated at 4 x 1500 W at 4 ohm. The number of passive speakers supported depends on their impedance and the system preset configuration.
How is the Thunder-KS1 I configured and controlled?
Configuration is managed through the K-Array Connect mobile app via the onboard RJ45 network port, and via K-Framework3 software. Dedicated presets stored on the DSP module set the crossover, level, and delay for each connected speaker model.
Does the enclosure have a bass-reflex port?
No. The Thunder-KS1 I uses a sealed, non-reflex enclosure, which reduces residual noise and improves weather resistance.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
What is your return policy?
All refunds and returns are determined by the manufacturer's terms of sale. Change-of-mind refunds are not accepted, but all valid warranty claims will be managed by AKA Acoustics in compliance with consumer law.
How long will it take to receive my order?
Freight lead times will be provided upon order confirmation. Standard items typically ship within 4–6 weeks, while custom orders may take 6–12 weeks.
Is my payment information secure?
Yes, all payments are securely processed through Stripe and are protected under their Terms of Service. AKA Acoustics do not store any payment information ourselves.
How are freight costs calculated?
Freight costs are determined at the time of quotation to ensure accurate pricing based on your specific order. For any questions, please email sales@akaacoustics.com
How can I contact support?
For account inquiries, email accounts@akaacoustics.com. For order support, email sales@akaacoustics.com.