Crown Audio 180MA, 280MA operation manual Specifications

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Commercial Audio Series Mixer-Amplifiers

4 Specifications

Minimum Guaranteed Power

180MA

280MA

1160MA

 

 

 

 

120 VAC, 60 Hz Units, per channel, all channels driven

 

 

 

 

 

 

 

1 kHz with 0.5% THD

 

 

 

Minimum guaranteed power per channel into 4 ohms or 70V/100V output

80W

80W

160W

 

 

 

 

Performance

180MA

280MA

1160MA

 

 

 

 

Number of input channels

4

8

4

 

 

 

 

Number of power amplifiers

1

2

1

 

 

 

 

Input Sensitivity (volts RMS) for full output at maximum gain

 

 

 

Balanced mic inputs

3 mV

3 mV

3 mV

800 mV

800 mV

800 mV

Balanced line inputs

400 mV

400 mV

400 mV

RCA connectors

 

 

 

 

 

 

 

Frequency Response (at 1 watt from 4-ohm tap, 70 Hz - 19 kHz)

± 1 dB

± 1 dB

± 1 dB

 

 

 

 

Frequency Response (at line out, 20 Hz to 20 kHz)

± 1 dB

± 1 dB

± 1 dB

 

 

 

 

Power Bandwidth (at 4-ohm tap, 2 dB below maximum 1 kHz power)

50 Hz to 20 kHz with < 0.5% THD

50 Hz to 20 kHz with < 0.5% THD

50 Hz to 20 kHz with < 0.5% THD

 

 

 

 

Signal to Noise Ratio (ref. to rated power, master volume at minimum)

85 dB

85 dB

85 dB

 

 

 

 

Total Harmonic Distortion (THD) at rated power at 1 kHz

< 0.5%

< 0.5%

< 0.5%

 

 

 

 

DC Output Offset

< ± 5 mV

< ± 5 mV

< ± 5 mV

 

 

 

 

Input Impedance (nominal)

Mic: 400 ohms, Line: 100 kilohms,

Mic: 400 ohms, Line: 100 kilohms,

Mic: 400 ohms, Line: 100 kilohms,

 

RCA: 50 kilohms

RCA: 50 kilohms

RCA: 50 kilohms

 

 

 

 

Crosstalk (all controls at “10”)

–70 dB at 1 kHz

–70 dB at 1 kHz

–70 dB at 1 kHz

 

 

 

 

Line Output Level (nominal)

1V into 10 kilohms

1V into 10 kilohms

1V into 10 kilohms

 

 

 

 

Phantom Power

15 VDC

15 VDC

15 VDC

 

 

 

 

AC Line Voltages Available

100V 50/60 Hz

100V 50/60 Hz

100V 50/60 Hz

 

120V 60 Hz

120V 60 Hz

120V 60 Hz

 

220V 50/60 Hz

220V 50/60 Hz

220V 50/60 Hz

 

230V 50/60 Hz

230V 50/60 Hz

230V 50/60 Hz

 

240V 50/60 Hz

240V 50/60 Hz

240V 50/60 Hz

 

 

 

 

Operating Temperature/Humidity

0o C to 40o C at 95% relative humidity

0o C to 40o C at 95% relative humidity

0o C to 40o C at 95% relative humidity

 

(non-condensing)

(non-condensing)

(non-condensing)

 

 

 

 

Storage Temperature

–20oC to 85o C

–20oC to 85o C

–20oC to 85o C

Construction

180MA

280MA

1160MA

 

 

 

 

Cooling

Convection cooled

Convection cooled

Convection cooled

 

 

 

 

Dimensions: Width, Height, Depth (behind mounting surface)

EIA Standard 19" W (EIA RS-310-B)

EIA Standard 19" W (EIA RS-310-B)

EIA Standard 19" W (EIA RS-310-B)

 

x 3.5" (8.9 cm) H x14" (35.6cm) D

x 3.5" (8.9 cm) H x14" (35.6cm) D

x 3.5" (8.9 cm) H x14" (35.6cm) D

 

 

 

 

Net Weight, Shipping Weight

21.0 lb. (9.5 kg), 26.0 lb. (11.8 kg)

25.3lb. (11.5kg),30.3lb. (13.7kg)

25.3lb. (11.5kg),30.3lb. (13.7kg)

 

 

 

 

Operation Manual

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Contents 180MA 280MASome models may be exported under the name Amcron Use only with a cart, stand, tripod, bracket, or Important Safety InstructionsEuropean Representative’s Name and Address Safety StandardDeclaration of Conformity Crown International, IncTable of Contents Welcome FeaturesClip Indicator Input Volume ControlsOutput Volume Controls Output Signal Presence IndicatorAmp Config Switch Back Panel Controls and Connectors Reset SwitchAuxiliary Power Input Amplifier Outputs ConnectorsSetup InstallationHow to Attach Rack Ears Choose Output Wire and Connectors Choose Input Wire and ConnectorsWire Your System Typical input and output wiring is shown in FigureOutputs Maintain proper polarity +/- on output con- nectors How to set up Music-On-Hold output Phantom PowerLink In/Out Switches How to link another mixer to your mixer-amplifierOptional Accessories Remote Volume ControlPowering Up Included Accessories280MA Block Diagram Block DiagramNo input signal Input signal level is very low TroubleshootingSpecifications Service 12/01 WarrantyWorldwide Except USA & Canada MasterCard Personal/Consumer Visa City State/Prov Postal Code CountryCredit card information Type of credit card

180MA, 280MA specifications

Crown Audio has established itself as a leader in the professional audio industry, and its 280MA and 180MA models epitomize its commitment to high-quality sound reinforcement. These amplifiers are designed for a range of applications, including commercial audio, live sound, and installation, providing unmatched performance and reliability.

The Crown 280MA is a robust two-channel amplifier that delivers an impressive power output of 280 watts per channel at 4 ohms. Its engineering focuses on efficiency and clarity, making it an excellent choice for any scenario where quality audio is essential. One of its standout features is the built-in mixer, which allows users to connect multiple audio sources seamlessly. This mixing capability is especially beneficial in environments such as restaurants, schools, and places of worship, where different audio sources may need to be balanced and controlled easily.

On the other hand, the Crown 180MA offers a more compact design but does not compromise on performance. With a power output of 180 watts per channel at 4 ohms, this model is perfect for smaller venues or setups. Like the 280MA, the 180MA also includes a built-in mixer, ensuring versatile audio management. Both models feature a streamlined user interface, enabling intuitive operation and quick adjustments.

Both amplifiers incorporate advanced technology such as Crown's proprietary DriveCore technology, which enhances power efficiency while reducing distortion. This technology allows the amplifiers to deliver clean, transparent power without the weight typically associated with traditional designs. The lightweight nature of both models makes installation and transport straightforward, adding to their practicality for sound engineers and event organizers.

The overall construction of the 280MA and 180MA is rugged, built to withstand the rigors of professional use. Features such as short-circuit protection, thermal protection, and overload protection ensure long-term reliability, even in demanding environments. Furthermore, the amplifiers offer flexible input options, including line-level and microphone inputs, allowing users to connect various audio sources without hassle.

In conclusion, the Crown 280MA and 180MA amplifiers represent a perfect blend of power, efficiency, and advanced technology. Their built-in mixers, robust protection features, and lightweight designs make them highly versatile for a wide array of applications. Whether used in commercial settings or live sound environments, these amplifiers ensure that the audio experience remains top-notch, reinforcing Crown Audio's reputation as an industry leader.