Thunder-KS5P I
The Thunder-KS5P I is a passive subwoofer from K-Array, housing two 21-inch neodymium magnet woofers in a polyurea-coated birch plywood enclosure. It reaches a peak SPL of 145 dB with deep bass extension down to 30 Hz, targeting the highest-demand professional sound reinforcement and large-scale touring applications.
Specifications
- Type: Passive subwoofer
- Transducers: 2 x 21-inch neodymium magnet woofers
- Frequency response: 30 Hz to 150 Hz (-6 dB, with dedicated preset)
- Crossover: DSP-controlled, low pass at 150 Hz (preset dependent)
- Max SPL: 145 dB peak (crest factor 4, measured at 1 m)
- Rated power: 2 x 2,800 W peak (requires two amplifier channels)
- Nominal impedance: 2 x 4 ohm
- Connectors: 2 x SpeakON NL4
- Dimensions (W x H x D): 1,140 x 590 x 850 mm (includes 17 mm removable rubber feet)
- Weight: 97.4 kg
- Enclosure material: Polyurea-coated birch plywood
- Colours: Black, White, Custom RAL
- IP rating: IP54
Applications
The Thunder-KS5P I is used in the most demanding professional live sound and touring environments where maximum low-frequency SPL and tight control are required. Its dual-channel drive configuration suits flagship line array systems and large-venue fixed installations. IP54 protection allows sheltered outdoor deployment; additional protection is recommended for permanent critical-environment locations such as swimming pools, beaches, and marine settings.
Standards and compliance
IP54 rated for resistance to dust ingress and water splashing from any direction.
Frequently asked questions
Why does the KS5P I require two amplifier channels?
Each of its two 4-ohm woofers is driven independently, requiring one dedicated amplifier channel per driver to deliver the full 2 x 2,800 W peak power rating and achieve the specified 145 dB SPL.
Can K-Discovery and K-framework3 be used to control this unit?
Yes. The K-Discovery mobile app provides remote DSP parameter control via a mobile interface, while K-framework3 software enables wired LAN management of large numbers of units simultaneously.
Does it need a dedicated DSP preset?
Yes. As a passive loudspeaker it requires a dedicated preset loaded on a K-Array amplifier to operate within its specified frequency range and crossover settings.
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.