12X + KA18 12" Top & 18" Subwoofer PA Speaker Combo | Sinbosen
Contour reinforced by 8 dB at 100 Hz
Ratio of one KA18 to one 12X
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Usable bandwidth (-10 dB)
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59 Hz – 20 kHz
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Maximum SPL
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136 dB
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Nominal directivity (-6 dB)
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Vertical: 90° symmetric
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horizontal: 60° symmetric
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Monitor angle
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Without risers: 35°
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with risers: 55°
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Transducers
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LF: 1 × 12″ cone driver
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HF: 1 × 3″ diaphragm compression driver, neodymium
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Acoustical load
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Load bass-reflex
laminar venting technology ellipsoidal waveguide |
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Nominal impedance
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8Ω
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Connectors
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IN: 1 × 4-point speakON
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LINK: 1 × 4-point speakON
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Rigging and handling
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2 handles
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5 threaded inserts
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1 × 35 mm pole sockets
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Weight (net)
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20 kg
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Cabinet
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FIrst-grade Russian birch plywood
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Front
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Steel with anti-corrosion coating
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acoustically neutral 3D fabric
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Finish
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Dark grey brown
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Low frequency limit (-10 dB)
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32 Hz
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Maximum SPL
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138 dB
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Nominal directivity (-6 dB)
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Standard or cardioid
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Transducers
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1 ×18''
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Acoustical load
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Dual bass-reflex
Laminar venting technology |
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Nominal impedance
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8 Ω
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Connectors
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2 × 4-point speakON
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Rigging and handling
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4×handles
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4-point captive rigging system
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1 ×25mm pole socket
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Weight (net)
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52 kg/115 lb
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Cabinet
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FIrst-grade Russian birch plywood
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Front
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Coated steel grill
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acoustically neutral 3D fabric
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Rigging components
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Steel with anti-corrosion coating
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Finish
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Dark grey brown
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1. Key Selling Points & Technical Advantages
1:1 SPL Balance & Dynamic Headroom
Power Matching: The 12X and KA18 both boast an impressive maximum SPL of 136 dB. In a pole-mount configuration, they achieve a perfect 1:1 acoustic energy balance, ensuring punchy, undistorted low-end without sacrificing clarity or overpowering the high frequencies.
Seamless Coaxial Integration: The 12X features an advanced elliptical coaxial design with an 90° x 60°. Combined with the KA18’s sub-bass down to 32 Hz and official DSP presets, the transition across crossover frequencies is smooth, linear, and phase-coherent.
Controlled Dispersion & Long Throw
Precise Coverage: The 90° x 60° dispersion pattern allows sound engineers to target energy directly at the audience while minimizing unwanted reflections from ceilings and side walls.
Extended Reach: Thanks to its high output and controlled directivity, the system projects crisp speech and high-frequency detail across longer distances without requiring line-array rigging.
High-Output Efficiency with Small Footprint
No Rigging Needed: The KA18 acts as a stable, heavy base (~52 kg / 115 lbs), eliminating the need for complex trussing or flying hardware.
Clean Aesthetics: The compact footprint leaves stage sightlines completely unobstructed, making it ideal for corporate backdrops, LED walls, and elegant event spaces.
2. Core Use Cases
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Application / Scenario
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Why Choose the 12X + KA18 Pole Mount?
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Mid-to-Large Corporate Events & Auto Shows
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Delivers massive dynamic range for video soundtracks and speeches without sacrificing aesthetic clean lines.
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Medium Livehouses & Outdoor Stages
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Easily handles high-energy genres like rock, pop, and EDM, providing authentic concert-level sound.
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High-End Weddings & Gala Parties
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Handles everything from subtle background acoustic sets to high-volume live bands and DJ performances.
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Touring Side-Fill & DJ Monitoring
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Serves as a high-output, full-range monitoring setup for performers and DJs on major concert stages.
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3. Coverage Capacity & Scale
Audience Size: A standard stereo pair (1 × 12X + 1× KA18 per side) comfortably covers 300 to 800 people in indoor or outdoor venues.
Throw Distance: 15 to 30 meters (approx. 50 to 100 ft) of effective coverage depth.
4. Operational & Safety Recommendations
Amplified Controller: Powered by A-4X (4×1000W @ 4 ohms). A single A-4X can independently drive and process two 12X and two KA18 on dedicated channels using factory presets.
Hardware & Weight: The 12X cabinet weighs 20 kg (44 lbs). To ensure safety at height:
Always use M20 threaded mounting poles screwed firmly into the KA18 top mount.
Consider crank-up / hand-winch poles for safer elevation adjustment by a single technician.
Add sandbags/weights behind the KA18 when deployed outdoors in windy conditions.
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