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Delta 975

Dual 15", 2-Way FOH Speaker

Product at a Glance

The British Acoustics Delta 975 is a versatile dual 15" full-range speaker, engineered to deliver impactful sound with exceptional clarity and coverage. Designed for professional audio applications, it excels as a standalone PA system or as a side-fill speaker for live performances, providing the power and precision needed for demanding environments. Equipped with dual 15" woofers, the Delta 975 offers extended low-frequency response with deep, punchy bass. Its 1.75" exit, 4" voice coil HF driver paired with an 80° x 50° horn ensures precise and consistent mid-high frequency dispersion, delivering clear and detailed sound to every corner of the venue.

The rugged enclosure combines durability with a professional aesthetic, making it suitable for touring and fixed installations alike. Its optimized design provides a balanced blend of high output and efficient coverage, ensuring reliable performance in a variety of applications. The Delta 975’s full-range capability reduces the need for additional subwoofers in many scenarios, offering a practical and streamlined solution for sound reinforcement. With its powerful output, robust construction, and finely tuned acoustic performance, the Delta 975 is an indispensable choice for audio professionals seeking exceptional sound quality and versatility.

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) : 50 Hz - 19 kHz
• Freq. Range (-10 dB) : 37 Hz - 20 kHz
• Rated Power : 1600W AES, 6400W Peak
• H Dispersion : 90° (- 6 dB)
• V Dispersion : 50° (- 6 dB)
• Nominal Impedance : 4 Ω
• Crossover : 1.3 kHz Passive
• Max Output : Cont. - 131dB, Peak - 137 dB
• 2 x Speak-on terminals, Input & Thru

SYSTEM SPECIFICATIONS

• Recommended Subwoofers : See Systems Chart for compatible subwoofers
• Recommended System Control : Delta 48 , Delta 98 FIR , PW 6
• Recommended Amplifiers : See Amplifier load calculation chart

LF TRANSDUCER

• 1540F - 15” Low Frequency Driver
• Two Drivers Connected in Parallel
• 750W AES, 3000W Peak
• 4” Voice Coil - Ferrite Magnet
• Motor, Suspension & Circulation optimised
by FEM
• Fortex™ Weather Resistant Cones

HF TRANSDUCER

• 275F - High Frequency Compression Driver
• 100W AES, 400W Peak
• 3” Voice Coil - Ferrite Magnet
• FEM Optimised Motor & Diaphragm
Very High Sensitivity
• Fitted behind the Delta Max Waveguide

HOUSING

• Marine Birchply Enclosure
• Granular Scratch Free Polyurea Paint
• Perforated Black, Pressed Steel Grills
• Integrated Handles on Either Side
• Includes a set of round bottom feet for
secure and stable stacking
• Slpoed Input Plates
• M10 Flying inserts

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: Flown with the correct
accessory or deployed vertically.
• 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 : 1231 x 533 x 520 mm (H x W x D)
• Product : 48.5 x 21 x 20.5 inch (H x W x D)
• Packed individually4"

WEIGHT

• Net : 52.25 Kgs
• Net : 115.19 Lbs

SHIPPING INFORMATION

• Carton Size
1282.7 x 609.6 x 609.6 mm (H x W x D)
50.5 x 24 x 24 inch (H x W x D)
• Gross Weight : 57.75 Kgs / 127.31696 Lbs
• Packed : Individually