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Description
HK Audio LINEAR SUB 1800 A Active Bass Reflex Subwoofer, 1200W Power - 18"L SUB 1800 A A LOW END BOOST FOR THE LINEAR SERIESLINEAR SUB 1800 A an 18" bass reflex subwoofer is packed full of low end. Unrivaled power, SPL of up to 132 dB and thumping bass (all the way to 38 Hz) make this powered sub the ideal add on to mid high units from the LINEAR 3 family when you need just a little more loudness and low end. LINEAR SUB 1800 A can also be used in combination with mid high units from the LINEAR 5 family, or as a bass
L SUB 1800 A - A LOW-END BOOST FOR THE LINEAR SERIESLINEAR SUB 1800 A - an 18" bass reflex subwoofer - is packed full of low end. Unrivaled power, SPL of up to 132 dB and thumping bass (all the way to 38 Hz) make this powered sub the ideal add-on to mid/high units from the LINEAR 3 family when you need just a little more loudness and low end. LINEAR SUB 1800 A can also be used in combination with mid/high units from the LINEAR 5 family, or as a bass extension to the ELEMENTS BIG BASE system.
Features
• Compact powerful subwoofer
• 1200 watts
• 1x 18″ Speaker
• 132 dB Max SPL Peak @ 10% THD (halfspace)
• Ideal add-on to mid/high units from the LINEAR 3 family
• Can also be used in combination with LINEAR 5 mid/high units, or as a bass extension to the ELEMENTS BIG BASE system
• Rugged wood enclosure
• Adjustable X-over frequency
• Integrated HK Audio MultiGrips
Details
• Max SPL: 130dB half space (@ 10% THD)
• Max SPL peak: 132 dB half space (@ 10% THD)
• Max SPL calculated: 133 dB half space
• Frequency response: +/- 3 dB: 42 Hz X-Over
• Frequency response -10dB: 38 Hz X-Over
• Power Rating: 1200 W
• Amplifier: Class D
• Active protection circuits: Under-voltage, thermal, short circuit, and over-current protection, Subsonic 24 dB/oct. peak limiter
• LF Speaker: 1x 18"
• Cut-off Frequency active: 100/120 Hz variable with 24 dB/oct.
• Connections: 2x XLR Combo In bal., 2 x XLR Thru bal., 2x XLR-Mid/High Out
• Input Sensitivity: +4 dBu @ Gain center-notched
• Pole mount: 1x M20 (K&M)
• Handles: 4x HK Audio MultiGrip
• Enclosure: MDF 16 mm
• Grille: 2 mm metal grille backed with black acoustic foam
• Finish: Acrylic enamel, black
• Optional accessories: Protective cover, Stereo Pole Add-On M20, tilt unit, 100 mm casters
• Dimensions (WxHxD): 51.0 x 67.0 x 72 cm
• Weight: 42 kg / 92.6 lbs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
lindas y cómodas
Súper lindas y cómodas, me encantan
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Nice shoes!
Size: 11, Color: Black Full Grain
I bought them in black and I like them so much I will be buying the brown soon. They fit true to size and are comfortable and stylish. I like the clean simplicity. They're basically a dressy sneaker which is perfect for my job's 'dress code'. Yet they're stylish enough to be worn weekends or a night out. They seemed just a touch stiff out of the box but IMO that's completely normal and fine - after just a couple days of wearing them they are breaking in nicely. No complaints on that. They seem to be of very high quality and I'm very happy with them.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Good shoes!!!!!
Size: 10, Color: Tan Full Grain
They are comfortable, they fit, great style. I bought blue, brown and black shoes.
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Reviewed in the United States on August 18, 2025
★★★★★ 5
Great Product
Size: 13, Color: Black Full Grain
2nd Johnston & Murphy comfortable and stylish.
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Reviewed in the United States on December 26, 2025
★★★★★ 5
Great shoes for business casual, corporate travel
Size: 8.5, Color: White Full Grain
Fit true to size
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Reviewed in the United States on December 30, 2025