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Delta 20 S

Dual 18" Powered Subwoofer
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Product at a Glance

The Delta 20 S is our High Powered, Dual 18" Subwoofer which can be stacked horizontally and vertically to form an ultra low frequency subwoofer array. With the incorporation of the Dolly Cart mount, transportation on the Delta Twenty is quick and easy. The Delta 20 S responds to frequencies as low as 30 Hz and is known to deliver a flat response. Coupling this performance on the driver along with a twin 2500W amplifier module (powering each driver independently) gives the system great efficiency. The Delta 20 is meant to be flown below the Delta 40 LA for high performance touring. The system also gives the user 512 FIR Taps, controllable via the Delta Tune Software and a single Cat-6 cable. It can also be couple with other elements in the 9 or 8 series to be a part of a larger system in a nightclub or performance venue.


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)

29 Hz - 185 Hz


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


Marine Birchwood Cabinet, Premium Grade



Frequency Range (-10 dB)

25 Hz - 200 Hz

LF Driver

2 x 18" Ultra Low Excursion Drivers, 4" VC - Ferrite


Powder-coated durable grill with acoustically transparent foam



Amplifier Power

3000W Continuous, 6000W Peak


2 x Balanced XLR for Stereo / Link
Cat 6 Control Cable, Power-Con Input / Link


British Acoustics' Signature Brown Finish



Maximum SPL

143 dB

AC Power Input

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

Mounting System

Dolly Cart Clamps, Stackable Rubber Feet and side-handle for transportation


97 Kgs

Coverage Pattern


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We have a growing network of channel partners

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