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Delta D21 FS

Flagship Self-Powered 21" Flying Subwoofer
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Product at a Glance

The British Acoustics Delta D21 FS is a powerful subwoofer designed for professional audio systems, delivering robust bass performance. It offers a frequency response of 30 Hz to 100 Hz and a peak SPL of 137 dB, driven by a 4kW Class-D amplifier. The subwoofer features a single 21” LF driver with a 4” Quattro in/out copper voice coil and treated waterproof cone, ensuring durability and high-quality sound. The control interface includes a 2.8” IPS screen and multifunctional navigation controller, with connectivity options such as USB, dual Ethernet, and multiple audio inputs. The marine birchwood cabinet, powder-coated grill, and signature brown finish ensure durability, while the 3-point secure fly rigging system and front power and signal panel with presets enhance usability.

CRAFTSMANSHIP

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

TECHNICAL SPECIFICATIONS

ACOUSTIC

Frequency Response (-3 dB)

30 Hz - 100 Hz

Frequency Range (-10 dB)

25 Hz - 100 Hz

Amplifier Power

4kW Class-D Amplifier

Maximum SPL

137 dB

Coverage Pattern

Quasi-Omnidirectional

Datasheet

AESTHETIC

Cardioid Stacks

Power & Signal Panel in the front, Presets available

Controls

Control interface equipped with a 2.8” IPS screen and a multifunctional navigation controller

Enclosure

Marine Birchwood Cabinet, Premium Grade

Grill

Powder-coated durable grill with acoustically transparent foam

LF Driver

1 x 21” 4" Quattro In/Out Copper Voice Voils, treated waterproof cones - Neodymium magnet.

Connectors

USB (Firmware)
Dual Ethernet port (Delta Audio Controller) 
2 x Input BAL/ UNBAL XLR connectors analog input AES3 digital input

Finish

British Acoustics' Signature Brown Finish

Mounting System

3-Point Secure Fly Rigging

AC Power Input

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

DIMENSIONS

Height

24"

Width

31.5"

Depth

30.6"

Weight

64 Kgs

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We have a growing network of channel partners

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