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Blue Sky Sub 12D
Owners Manual, V1.0
Sub 12D Design Features
The Sub 12D is designed and assembled in the USA.
Electronics
The Sub 12D features both XLR Analog inputs and AES/ EBU Digital inputs. The Sub 12D will
automatically switch to Digital if both Analog and Digital inputs are connected. In addition, Digital
pass thru and Digital Stereo L/R selector switches are provided.
The DSP crossover filters are derived using Blue Sky proprietary BOO optimization software. This
includes system time alignment.
The Digital circuitry features FR4 6-layer circuit boards, Burr-Brown 192 kHz/24 Bit A/D & 192
kHz/24 D/A, and Cirrus Logic Digital receiver and sample rate convertor. In addition, the Sub 12D
has a “Pure-Digital” mode for 48 kHz and 96 kHz operation, where the native input from the
AES/EBU receiver is sent straight to the DAC, and does not go through the sample rate
convertor.
The Sub 12 D includes Digital 2.1 Bass Management. In addition, variable crossover frequency
adjustments, and high pass and low pass filters.
The Sub 12D has a USB data port for speakers settings, updates and room correction input
which includes a digital graphic equalizer, selectable parametric EQ, pink noise generator,
adjustable time delay and gain control.
The Sub 12D has 400-watts of amplifier power.
The electronics are designed and assembled in the USA.
Transducers
The Sub 12D has a custom designed and built 12” cast frame woofer with a very long and linear
x-max.
