Bluehorn Full Bandwidth Studio Monitor System Architectural Specifications
Each system channel shall comprise a two-way, full-range loudspeaker and a separate low-frequency extension loudspeaker driven by an external, dedicated network processor. The external unit shall serve as an active crossover and shall also host the patented digital signal processing algorithms for full-bandwidth phase correction. Up to three system channels shall be connected to each external processor.
The two-way, full-range loudspeaker shall be a compact, linear, low-distortion, studio monitor loudspeaker and shall be self-powered by a 2-channel, class D amplifier. Its transducers shall include one 12-inch cone driver, and one 4-inch diaphragm compression driver coupled to a constant-directivity, wide-dispersion horn.
The low-frequency extension loudspeaker shall be a low-distortion, studio subwoofer and shall be self-powered by a single channel, class D amplifier. Its transducer shall include one 18-inch cone driver.
Both units shall incorporate internal processing in their onboard amplifier; processing shall include equalization, phase correction, driver protection, and signal division. The operating frequency range for a typical production system channel, measured free-field with 1/3 octave frequency resolution at 4 m and coplanar to each other for less than 12 inches (30 cm) apart shall be 20 Hz–22 kHz. The linear peak SPL shall be 130 dB with crest factor >17 dB (measured with M-noise free-field at 4 m referred to 1 m).
Audio connectors shall be XLR 3-pin female with male XLR loop output, accommodating balanced audio.
The internal power supplies shall perform EMI filtering, soft current turn- on, and surge suppression. Power requirements shall be nominal 100, 110, or 230 V AC line current at 50–60 Hz. UL and CE operating voltage range shall be 100–240 V AC at 50–60 Hz. AC power connectors for input and loop output shall be powerCON 20. Maximum long-term continuous current draw for the two-way full-range loudspeaker shall be 1.58 A rms at 115 V AC, 0.83 A rms at 230 V AC, and 1.78 A rms at 100 V AC. Maximum long-term continuous current draw for the low-frequency extension loudspeaker shall be 1.40 A rms at 115 V AC, 0.70 A rms at 230 V AC, and 1.60 A rms at 100 V AC.
Components shall be mounted in optimally tuned, vented enclosures constructed of premium multi-ply birch with a slightly textured black finish. Dimensions for the two-way, full-range loudspeaker shall be W: 19.00 in (482.6 mm) x H: 25.38 in (644.5 mm) x D: 14.95 in (379.6 mm) and the weight shall be 74 lb (33.6 kg). Dimensions for the low-frequency extension loudspeaker shall be W: 20.65 in (524.5 mm) x H: 31.00 in (787.4 mm) x D: 19.85 in (504.2 mm) and the weight shall be 88 lb (39.9 kg). The total loudspeaker system weight shall be 162 lb (73.5 kg)
The external dedicated network processor shall include 96 kHz audio processing and utilize variable length integers with up to 64 bits of resolution. The processor shall dedicate 3 channels of the 8 channel inputs and shall provide 6 channels of the sixteen channel outputs exclusively for the loudspeaker system. These dedicated channels shall serve as an active crossover and also shall host the patented digital signal processing algorithms for full-bandwidth phase correction.
The processor shall accept analog balanced, AES3 or AVB. Each input channel shall include dedicated processing for mute, gain, delay, U-Shaping, and 5-band parametric equalization. Output channels shall be via AVB or analog and shall include mute, gain, delay, polarity reversal, U-Shaping equalization, 10-band parametric equalization, and delay integration, as well as high- and low-pass filters, atmospheric correction filters, and subwoofer integration.
Analog and AES3 input connectors and analog output connectors shall be balanced, gold-plated XLR connectors with high-current line drivers capable of output voltages up to +26 dBu without clipping into loads of 50 Ω or higher.
The network processor’s sophisticated digital matrix processor shall allow routing and gain delays from any input, or combination of mixed inputs, to any combination of outputs with cross point delays and a fixed latency regardless of the processing applied to the signals.
The front panel shall include: a two-line LCD display for device, current snapshot, and firmware information; LED indicators for audio signal metering, AVB Sync, Audio Clock, Power, Controller, and SIM3 connections; illuminated mute switches; and signal/clip indicators for output channels. Password protection shall be available to avoid unwanted parameter changes.
The unit shall be controlled remotely from a Mac or Windows-based computer via Ethernet or wirelessly from an iPad; the client server control software shall have bidirectional communication to ensure that parameters are in sync. The processor shall include direct connectivity to Meyer Sound’s SIM 3 audio analyzer so that measurements can be taken directly from the unit.
The unit shall be housed in a 2U, 19-inch, rack-mount cabinet, measuring 16.14 inch (410 mm) in depth, and weighing 16.8 lb (7.6 kg). Its AC inlet shall be a powerCON 20 A locking connector to prevent unwanted power disconnections. Its two network inlets shall be EtherCON RJ45 connectors.
The two-way full-range loudspeaker shall be Bluehorn, the low-frequency extension loudspeaker shall be the Bluehorn Subwoofer, the network processor shall be the Meyer Sound Bluehorn 816, and its software shall be the Compass Control Software.
The complete system shall be the Meyer Sound Bluehorn System Full Bandwidth Studio Monitor.