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Delta 928 S

Dual 18" High Performance Subwoofer

Product at a Glance

The British Acoustics Delta 928 S builds upon the legacy of the renowned Delta 828, delivering enhanced performance and reliability for demanding live sound applications. Designed with modern advancements, it features improved and more efficient drivers, ensuring better sound output and system efficiency. Equipped with dual 18" long excursion drivers, the Delta 928 S offers extended low-frequency response with high resonance, delivering deep, impactful bass that is essential for live performances. Its advanced design minimizes port turbulence, ensuring cleaner, distortion-free output, even at high sound pressure levels.

With its rugged construction and optimized performance, the Delta 928 S is ideal for professionals seeking robust, high-performance subwoofer solutions. Whether used for concerts, festivals, or touring productions, the Delta 928 S provides powerful and precise low-end reinforcement that lives up to the Delta Series’ reputation for excellence.

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

ACOUSTICAL SPECIFICATIONS

• Freq. Response (-3 dB) : 37 Hz - 150 Hz
• Freq. Range (-10 dB) : 31 Hz - 150 Hz
• Rated Power: 2000W AES, 8000W Peak
• Omni Directional
• Cardioid presets available
• Nominal Impedance : 8 Ω
• Crossover : 80 - 120 Hz Active
• Max Output : Cont. - 136dB, Peak - 142 dB
• 2 x Speak-on terminals, Input & Thru

SYSTEM SPECIFICATIONS

• Recommended System Control : Delta 48 ,
Delta 98 FIR , PW 6
• Recommended Amplifiers : See Amplifier
load calculation chart

LF TRANSDUCER

• 1840 F - 18" Ultra Low Excursion driver
• Two drivers connected in parallel
• 1000W AES, 4000W Peak
• 4” Voice Coil - Ferite Magnet
• Double Silicon Spider
• Optimised Heat Dissipation

HOUSING

• Marine Birchply Enclosure
• Granular Scratch Free Polyurea Paint
• Perforated Black, Pressed Steel Grills
• Integrated Handles on Either Side
• Includes a set of vertical bottom feet for
secure and stable stacking

AESTHETIC SPECIFICATIONS

• British Acoustics Signature Umber Brown Tone
• Non Reflective, Matte Black Grills
• Available in a RAL code of your choice (24 nos, minimum)

OPERATING PARAMETERS

• Operating positions: Can be used
horizontally or vertically and can be used as
a stack of subs
• Maximum permitted ambient temperature
(Ta max) 55° C (124° F)
• Minimum permitted ambient temperature
(Ta min): -9° C (15.8° F)

IP SPECIFICATIONS

• IP 43 - Standard protection against dust &
splashes

OPTIONAL ACCESSORIES

• See system chart for the System Accessories

SIZE

• Product : 596.9 x 1111 x 730 mm (H x W x D)
• Product : 23.5 x 43 x 28 inch (H x W x D)
• Packed individually

WEIGHT

• Net : 76.45 Kgs
• Net : 168.67 Lbs

SHIPPING INFORMATION

• Carton Size
717.55 x 1219.2 x 850.9 mm (H x W x D)
28.25 x 48 x 33.5 inch (H x W x D)
• Gross Weight - 82.45 Kgs / 181.88 Lbs
• Packed : Individually