Thunder-KS1P I
The Thunder-KS1P I is a passive subwoofer from K-Array, matching the enclosure footprint of the Thunder-KS1 I active unit. A long-excursion 12-inch neodymium woofer with a 3-inch voice coil in a sealed polyurea-coated birch plywood cabinet accepts signal from external amplifiers or active K-Array subwoofers via two SpeakON NL4 connectors, enabling system expansion or multi-cabinet configurations.
Specifications
- Type: Passive subwoofer
- Transducer: 1 x 12-inch neodymium woofer with 3-inch voice coil
- Frequency response: 35 Hz to 150 Hz / 450 Hz (-6 dB, with dedicated preset)
- Crossover: External DSP-controlled, low-pass at 150 Hz to 450 Hz, preset dependent
- Maximum SPL: 134 dB peak (crest factor 12 dB, measured at 1 m)
- Rated power: 1200 W peak
- Nominal impedance: 8 ohm
- Connectors: 2 x SpeakON NL4
- Coverage: Omnidirectional
- 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: 18 kg (39.7 lb)
- Enclosure material: Polyurea-coated birch plywood
- IP rating: IP54
- Finishes: Black, white, custom RAL
Applications
Used to expand a Thunder-series system by pairing with a Thunder-KS1 I active unit, which provides amplification, DSP, and preset management. The two SpeakON NL4 connectors support input signal from any compatible amplifier and signal pass-through to additional loudspeakers. Suited to theatres, clubs, auditoriums, houses of worship, and outdoor events where extra low-frequency output is needed without adding another active amplifier. Dedicated K-Array presets loaded on the driving amplifier are required for correct system operation.
Standards and compliance
IP54 rating: protected against dust ingress and water splashing from any direction. K-Array recommends additional protection for permanent installations in critical environments such as swimming pools, beaches, or yachts.
Frequently asked questions
Can the Thunder-KS1P I be used without a K-Array amplifier?
The KS1P I can be driven by any compatible external amplifier rated for an 8-ohm load. However, K-Array Kommander amplifiers carry dedicated presets that ensure the correct crossover, level, and delay settings for this cabinet.
What is the difference between the Thunder-KS1 I and the Thunder-KS1P I?
The Thunder-KS1 I is self-powered, with an onboard Class D amplifier module and DSP. The Thunder-KS1P I is a passive cabinet with the same external dimensions and identical driver, but 3.6 kg lighter, intended to be driven by the KS1 I or another compatible amplifier.
Does the prose state IP54 or IP53 for this model?
The Thunder-KS1P I carries an IP54 rating. The active Thunder-KS1 I carries IP53. Both require additional protection for fully exposed outdoor or aquatic installations.
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.