




Delta K15 X
Self Powered 15" Co-axial Wedge Monitor


Product at a Glance
The British Acoustics Delta K15 X is a flagship 15" self-powered coaxial wedge monitor, engineered to meet the demands of professional audio environments. Combining compact design, exceptional clarity, and advanced performance, it sets a new benchmark in stage monitoring. Equipped with a 3000W Class-D amplifier, the K15 X offers precise and linear sound reproduction with a full-range frequency response of 50 Hz to 22 kHz. Its 15" coaxial neodymium woofer and 3.5" Duo Copper Voice Coil deliver deep, accurate voicing, detailed midrange, and exceptional high-frequency clarity. The monitor’s flat amplitude and phase response ensures consistent, natural sound across its 60° dispersion, making it ideal for demanding touring and theatre applications.
The K15 X’s compact, low-profile design minimizes stage clutter, ensuring a discreet presence without sacrificing acoustic output. Its durable birch ply enclosure, Fortex™ weather-resistant cones, and sloped input plate enhance reliability and weather resistance, making it suitable for both indoor and outdoor use. For advanced configurations, the monitor integrates with Delta Audio Controller and Delta Array Predictor, offering precise control and seamless system integration. The addition of DSP-based limiters ensures thermal and mechanical protection for consistent performance. With its combination of power, precision, and versatility, the Delta K15 X redefines stage monitoring, offering unparalleled performance for professionals seeking clarity and control on stage.
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 - 20 kHz
• Freq. Range (-10 dB) : 50Hz - 22 kHz
• H Dispersion : 100° (- 6 dB)
• V Dispersion : 60° (- 6 dB)
• Crossover : 900 Hz
• Max Output : Cont. - 133dB, Peak - 139dB
SYSTEM SPECIFICATIONS
• Recommended System Control : Delta Audio
Controller (DAC) & Delta Array Predictor (DAP)
CO-AXIAL TRANSDUCER
• ARD-CX-15-76- 15" Coaxial Driver with 1.4"
Compression Driver
• 500W AES, 2000W Peak
• 3" Voice Coil - Ferrite Magnet
• AuraTense Suspension for an optimised
compliant restoring force
• Engineered Demodulation Circuit to minimize magnetic flux and lower distortion
• HF : 3" Voice Coil - Ferrite
• 100W AES, 400W Peak
• Mounted behind the assymetrical aura max waveguide that ensures minimal resonance across a precise coverage pattern
• Co-axial configuration allows for maximum
coherence by reducing phase imbalances
HOUSING
• Birch wood Enclosure
• Granular Scratch Free Polyurea Paint
• Perforated Stainless Steel Grill backed by
acoustically transparent foam over a
stainless steel mesh
• M10 Flying Inserts
• Rubber feet for use as floor monitor
• Standard 35mm Pole Socket
• Easy Transport Wood Recessed Handles with
ABS Gripmats
AMPLIFIER & DSP
SPECIFICATIONS
• 3000W Class-D Amplifier
• Dual Stage Power Factor Correction
• Exceptional Amplifier Efficiency
• Thermal, short-circuit and overload protections
• 64 bit/96kHz processor, Digital FIR filters
• 32 bit/96kHz AD/DA converters
• Dual Ethercon Connectors to connect with Delta Audio Controller
• 16A Neutrik Truecon Power In/Out
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: To be used as a stage
monitor, or vertically deployed over a sub, or
on pole mount as an FOH Speaker
• 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 : 367 x 616 x 562 mm (H x W x D)
• Product : 14.4 x 24 x 22.1 inch (H x W x D)
• Packed individually
WEIGHT
• Net : 29 Kgs
• Net : 63.9 Lbs
SHIPPING INFORMATION
• Carton Size
442 x 691 x 637 mm (H x W x D)
17.4 x 27.2 x 25.07 inch (H x W x D)
• Gross Weight : 27.3 Kgs / 60.18 Lbs
• Packed : Individually