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Delta 915-40 LA
15" High Performance Line Array Module - Near Field
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Product at a Glance
The British Acoustics Delta 915-40 LA and Delta 915-20 LA are compact, high-SPL line array systems designed for medium-scale applications where the scalability of larger systems is not required. These versatile 15" line array boxes are ideal for scenarios that demand powerful, clear audio with adaptable coverage options. Available in 20° and 40° vertical coverage variants, the Delta 915 series provides flexibility to suit various venue sizes and acoustic needs. Their compact enclosure ensures seamless integration into tight spaces, offering an efficient alternative to bulkier systems without compromising performance.
With their high SPL capabilities, the Delta 915 boxes deliver impactful sound reinforcement, making them an excellent choice for replacing point source systems. Their ability to be arrayed vertically is particularly beneficial for venues with lower ceiling heights, allowing precise coverage and greater SPL than traditional point source boxes. Engineered for efficiency and reliability, the Delta 915-40 LA and 915-20 LA excel in a range of environments, from live performances to permanent installations. Combining compact size, flexible coverage, and impressive output, they offer a scalable and cost-effective solution for professional audio applications demanding precision and power.
CRAFTSMANSHIP
Painstakingly Perfect Production
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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) : 49 Hz - 20 kHz
• Freq. Range (-10 dB) : 42 Hz - 20 kHz
• Rated Power : 850W AES, 3400W Peak
• H Dispersion : 100° (- 6 dB)
• V Dispersion : 40°, array dependent
• Nominal Impedance : LF/FR - 8 Ω , HF - 8 Ω
• Crossover: 1.8 kHz Passive or Bi-amplified
• Max Output : 131dB, 137dB Peak
• 2 x Speak-on terminals, Input & Thru
• Passive / Bi-amp selection switch
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
• 1575 F - 15" Low frequency driver
• 800W AES, 3200W Peak
• 3" Voice Coil - Ferite Magnet
• Compliant & Controlled spectre-spider
• Enhanced ventilation due to optimized heat
paths
HF TRANSDUCER
• AR1475 - 1.4” Exit HF Compression Driver
• 50W, 200W Peak
• 3” Voice Coil - Ferrite Magnet
• Precise waveguide maintaining horizontal dispersion upto 18 kHz
HOUSING
• Marine Birchply Enclosure
• Granular Scratch Free Polyurea Paint
• Perforated Black, Pressed Steel Grills
• Integrated Handles on Either Side
• 4-Point Easy-Fly™ Rigging Mechanism
• 0-12° Splay Angles
• Tethered Quick-lock Pins, Max. of 16 units in one hang with the Acc 915 AF
• Can be flown or stacked over the Delta
925 FS without the need of an array frame
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 or Ground stacked with the correct Array Frame or Accessory
• 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 : 431x 749 x 450 mm (H x W x D)
• Product : 17 x 29.5 x 17.75 inch (H x W x D)
• Packed individually
WEIGHT
• Net : 42.6 Kgs
• Net : 93.91 Lbs
SHIPPING INFORMATION
• Carton Size
857.25 x 552.45 x 558.8 mm (H x W x D)
33.75 x 21.75 x 22 inch (H x W x D)
• Gross Weight : 47.98 Kgs / 105.77 Lbs
• Packed : Individually