Architectural Specification — 1800-LFC
Low-Frequency Control Element
The loudspeaker shall be a linear, low-distortion, self-powered, low-frequency control element which shall be capable of flown and groundstacked configurations. Its transducer shall be one 18-inch long-excursion cone driver.
The loudspeaker shall incorporate internal processing and a 2-channel class-D amplifier. Protection circuits shall include TruPower limiting. The analog audio input shall be electronically balanced with a 10 kΩ impedance and accept a nominal 0 dBV (1.0 V rms) signal. Analog audio connectors shall be XLR 3-pin Neutrik True Outdoor Protection (TOP), female and male. The digital audio input format shall be either Milan AVB or AES67 and the connector shall be a Neutrik etherCON TOP.
Performance specifications for a typical production unit shall be as follows: the operating frequency range shall be 30 Hz – 125 Hz; frequency response shall be 33 – 105 Hz, ±4 dB, measured in half-space with pink noise at 4 m, 1/3-octave frequency resolution; phase response shall be 37 – 110 Hz ±30 degrees; the Maximum Linear Sound Levels shall be 135.3 dBZpk, 125.5 dBZ, with an RMS analog input level of +3.1 dBV and a digital input of -21dBFS, measured in half-space at 4 m, referred to 1 m.
The internal power supply shall perform EMI filtering, soft current turn-on, and surge suppression. Power requirements shall be nominal 100 – 240 V AC, 50–60 Hz. Power shall be 550 W maximum long-term continuous (>10 seconds), 2100 W burst (<1 second), and 50 W idle. The AC power connector shall be a Neutrik powerCON TRUE1 True Outdoor Protection (TOP). The loudspeaker shall include a telemetry monitoring function via Ethernet network.
Components shall be mounted in an optimally tuned, vented enclosure constructed of premium multi-ply birch and coated with a slightly textured black finish. The front protective grille shall be powder-coated stamped steel.
There shall be two versions, one with QuickFly rigging endframes and GuideALinks and another without rigging. Both versions shall include a M20 pole mount plate centered on the top panel and two M8 threaded accessory attachment points located on the both the top and bottom panels.
The IP rating shall be IP55 when connected cables are terminated with Neutrik TOP connectors or when the connector sealing caps are in place.
Dimensions for the QuickFly rigging version shall be 34.00 in (863 mm) wide, 22.92 in (582 mm) high, and 24.00 in (610 mm) deep. Without rigging, the dimensions shall be 33.81 in (859 mm) wide, 22.75 in (578 mm) high, and 24.00 in (610 mm) deep.
Weight shall be 199 lbs (90 kg) with rigging, 145 lbs (66 kg) without rigging.
The loudspeaker shall be the Meyer Sound Laboratories 1800-LFC Low-Frequency Control Element.
PN: 18.338.140.01 A 2610 |