USW-121P - High-Output Subwoofer

The loudspeaker shall be a linear, low-distortion, self-powered, sub-bass system. Its transducer shall be a single 21-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 3-pin XLR Neutrik True Outdoor Protection (TOP) connectors, both female and male. The digital audio input format shall be AES67, and the connectors shall be Neutrik etherCON TOP.

Performance specifications for a typical production unit shall be as follows:

Operating Frequency Range — 20 Hz – 125 Hz (-10dB) measured in halfspace with pink noise at 4 m, 1/3 octave frequency resolution
Phase Response — 28-110 Hz ±30 degrees
AES75 Maximum Linear Sound Levels — 136 dBZpk, 125 dBZ, at an RMS input level of +4.4 dBV for analog and -17.8 dBFS for digital, measured in half-space at 4 meters, referenced to 1 meter

The internal power supply shall perform EMI filtering, soft current turn-on, and surge suppression. Power requirements shall be nominal 200 – 240 V AC, 50–60 Hz. Power shall be 800 W maximum long-term continuous ( >10 seconds), 2400 W burst <1 second). The AC power connector shall be a Neutrik powerCON TRUE1 True Outdoor Protection (TOP). The loudspeaker shall include a telemetry monitoring function via an 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 optional front protective grille shall be powder-coated stamped steel. The IP rating shall be IP55 when the OT version is specified and connected cables are terminated with Neutrik TOP connectors or when the connector sealing caps are in place.

Dimensions shall be 52.00 in (1321 mm) wide, 27.50 in (698 mm) high, and 24.50 in (622 mm) deep.

Weight shall be 198 lb (89.8 kg).

The loudspeaker shall be the Meyer Sound Laboratories USW-121P.

规格

ACOUSTICAL

Operating Frequency Range¹

20 Hz - 125 Hz (-10dB)

Frequency Response²

23 Hz - 105 Hz ±4 dB

Phase Response

28 Hz – 110 Hz ±30°

AES75 Maximum Linear Sound Levels

136 dBZpk, 125 dBZ at an RMS input level of +4.4 dBV for analog and -17.8 dBFS for digital, measured in half-space at 4 meters, referenced to 1 meter.

Coverage

360° (single unit), varies with the number of units and configuration

TRANSDUCERS

Low Frequency

One 21‑inch long‑excursion cone driver; 4Ω nominal impedance

PHYSICAL

Dimensions

W: 52.00 in (1321 mm) x H: 27.50 in (698 mm) x D: 24.50 in (622 mm)

Weight

89.8 kg (198 lb)

Enclosure

Premium multi-ply birch, slightly textured black finish. The OT version includes additional treatment of the cabinet wood.

Protective Grille

Powder-coated, stamped steel. The OT version includes stainless steel mesh behind the grille.

Rigging

10 x M8 x 1.25 mm accessory attachment points: six (6) on left side; four (4) on right side

IEC Ingress Protection Rating (IP Rating)

OT version is IP55 rated when connected to cables terminated with Neutrik TOP connectors.

AC POWER

Connector

Neutrik powerCON TRUE1 TOP (True Outdoor Protection)

Operating Voltage Range

200 – 240 V AC, 50 or 60 Hz

POWER CONSUMPTION

Max Long-Term Continuous Power

800 W maximum long-term continuous ( >10 seconds), 2400 W burst <1 second)

ANALOG AUDIO INPUT³

Connectors

Neutrik XLR 3-pin TOP (True Outdoor Protection) female input with male loop output

DIGITAL AUDIO INPUT³

Connectors

Neutrik etherCON TOP (True Outdoor Protection)

Digital Format

AES67, SMPTE 2110 Compliant

MONITORING

Remote Product Monitoring

RPM data is transmitted via the Ethernet port and displayed in software.

USER DSP

User-Controlled Signal Processing

Type 3P input module features GEN‑1 technology, embedding the signal processing of a Galileo GALAXY output channel in the loudspeaker, controlled via Nebra software.

On-board processing includes: