Delta D21 FS
Flagship Self-Powered 21" Flying Subwoofer
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.
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
AESTHETIC
Cardioid Stacks
Power & Signal Panel in the front, Presets available
Enclosure
Marine Birchwood Cabinet, Premium Grade
Controls
Control interface equipped with a 2.8” IPS screen and a multifunctional navigation controller
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
