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HK Audio LINEAR 5 MK II 115 Sub A Active 15 inch Subwoofer

The LINEAR 5 MK II 115 Sub A is the compact subwoofer of the LINEAR 5 system: a single 15-inch cone driver on a 3-inch voice coil in a bass reflex cabinet, driven by a 600 W RMS, 1200 W peak Class D amplifier. It reaches 44 Hz at -6 dB and produces 127 dB average and 130 dB peak, which is the right amount of low end under a pair of 112 or 115 tops without becoming a two-person carry at 72.5 pounds.

Two XLR/jack combo inputs and two XLR outputs let it sit inline between console and tops, with a separate DSP output for a processed feed and Ethercon in and out for network control across the rig. The DSP preamplifier runs at 48 kHz with under 2 ms latency and provides a ten-band parametric EQ with variable filter characteristics plus RMS and peak limiting. Mains is an IEC connector with V-lock, accepting 100 to 240 V.

ConceptActive subwoofer, bass reflex
Max SPL Average / Peak127 dB / 130 dB
Frequency Range44 Hz to crossover (-6 dB), 40 Hz to crossover (-10 dB)
Component1 x 15 inch cone speaker, 3 inch voice coil
Power AmplifierClass D, 600 W RMS / 1200 W peak
DSP48 kHz, under 2 ms latency, 10-band parametric EQ, RMS and peak limiter
Connections2 x XLR/jack combo in, 2 x XLR out, DSP out, Ethercon RJ45 in and out
Weight32.9 kg / 72.5 lb
Order CodeLINEAR-5-MK2-115-SUB-A-U
Our new LINEAR 5 MK II SERIES: Introduction video from the ISE 2023
ISE 2023: HK Audio Introduces LINEAR 5 MK II Series Speakers