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Delta K40 LA

K-Standard Self Powered Dual 10" Intelligent Line Array
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Product at a Glance

The British Acoustics Delta K40 LA is a versatile, self-powered line array speaker from the Series X range, designed for high-fidelity sound reinforcement. It offers a frequency response of 50 Hz to 20 kHz and delivers up to 137 dB SPL with 1500W continuous and 3000W peak power. The system features dual 10” high-sensitivity mid-high drivers with 2.5” voice coils and a 3.4” neodymium compression driver, providing exceptional clarity and coverage with a pattern of 140° x 20°. It includes user-friendly controls such as system gain, preset selection, polarity invert, and power switch. Connectivity options include balanced XLR for stereo and link. The enclosure, made from premium-grade marine birchwood with a powder-coated grill, ensures durability, while the 4-point Delta X rigging mechanism allows for secure mounting. The unit is finished in British Acoustics' signature brown for a professional aesthetic.


Painstakingly Perfect Production

Over the years, craftsmanship has been closely linked with small scale individualistic production. Back in 1972, we started the same way. As we grew in scale & size, it was difficult to build each speaker individually, but quality control was of utmost importance as so switching to a general assembly line was simply not an option. So we wrote up a code, one quite like enigma, to ensure quality control. We selected the right partners, got the right tools, and in cases where those weren't available, we invented them. We grew slower than most as our aim was to last longer than most. 

Tech Specs



Frequency Response (-3 dB)

50 Hz - 20 kHz

Frequency Range (-10 dB)

46Hz - 20 kHz

Amplifier Power

1500W Continuous, 3000W Peak

Maximum SPL

137 dB

Coverage Pattern

140° x 20°




System Gain Knob, Preset Selection Switch, Polarity Invert Switch, Power Switch

LF Driver

2 x 10" High Sensitivity Mid-High Drivers, 2.5" VC - Ferrite


Marine Birchwood Cabinet, Premium Grade


Powder-coated durable grill with acoustically transparent foam

HF Driver

1x 3.4" neodymium, compression driver


2 x Balanced XLR for Stereo / Link


British Acoustics' Signature Brown Finish

Mounting System

3-Point Secure Fly Rigging

AC Power Input

Universal power supply 100 - 240 VAC, 50 - 60 Hz









32 Kgs

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