Crown Audio 180MA 280MA, 1160MA Input Volume Controls, Output Volume Controls, Clip Indicator

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Commercial Audio Series Mixer-Amplifiers

1 Welcome

1.2 Front Panel Controls and Indicators

A. Input Signal Presence Indicator

Green LED, one for each input channel, illuminates when input signal exceeds –24 dBu (line) or –70 dBu (mic).

B. Input Volume Controls

Microphone/line, four in 180MA and 1160MA, eight in 280MA. Detented potentiometers with knobs.

C. Output Volume Controls

One per output channel. Detented potentiometer with knob.

D. Output Signal Presence Indicator

Green LED, one for each output channel, illuminates when output signal level exceeds 100 mV (45 dB below full power) from the 4-ohm tap. Does not respond to sig- nals from the AMP INPUT connector.

E. Clip Indicator

Red LED, one per output channel, illuminates at thresh- old of audible distortion. Does not respond to signals from the AMP INPUT connector.

F. Power Indicator

Blue LED indicates power on.

G, H. Tone Controls

Bass and Treble non-detented potentiometers on each input channel. Bass ±10 dB at 100 Hz, Treble ±10 dB at 10 kHz.

I. Power Switch

Pushbutton on-off switch. The power switch does not affect the 24V DC auxiliary power input (letter “K” on next page).

Figure 1.1 Front Panel Controls and Indicators

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Operation Manual

Image 6 Crown Audio 180MA 280MA Input Volume Controls, Output Volume Controls, Output Signal Presence Indicator, Clip Indicator
Contents 180MA 280MASome models may be exported under the name Amcron Important Safety Instructions Use only with a cart, stand, tripod, bracket, orCrown International, Inc Safety StandardDeclaration of Conformity European Representative’s Name and AddressTable of Contents Features WelcomeOutput Signal Presence Indicator Input Volume ControlsOutput Volume Controls Clip IndicatorAmplifier Outputs Connectors Back Panel Controls and Connectors Reset SwitchAuxiliary Power Input Amp Config SwitchSetup InstallationHow to Attach Rack Ears Choose Input Wire and Connectors Choose Output Wire and ConnectorsWire Your System Typical input and output wiring is shown in FigureOutputs Maintain proper polarity +/- on output con- nectors How to link another mixer to your mixer-amplifier Phantom PowerLink In/Out Switches How to set up Music-On-Hold outputIncluded Accessories Remote Volume ControlPowering Up Optional AccessoriesBlock Diagram Ch 3 and Ch 4 similar to ChTroubleshooting No input signal Input signal level is very lowSpecifications Service Warranty United States & CanadaItems Excluded from this CROWN- Warranty Worldwide Except USA & CanadaFax Model Serial #Crown Audio, Inc Product purchased from *Business/Individual CountryThis page Intentionally Left Blank Individual or Business Name Phone # Fax # Payment OptionsModel ‰ Personal/Consumer ‰ Business/CorporateCommercial Audio Series Mixer-Amplifiers Commercial Audio Series Mixer-Amplifiers

1160MA, 180MA 280MA specifications

Crown Audio, a leader in professional amplifier technology, has introduced a series of high-performance amplifiers that cater to a variety of applications. The 1160MA, 180MA, and 280MA models are designed to deliver exceptional sound quality, reliability, and efficiency, making them ideal for both commercial and residential audio installations.

The 1160MA is a versatile amplifier equipped with a powerful, high-efficiency Class D design that ensures maximum power output with minimal heat generation. Capable of delivering up to 1,160 watts per channel, this model is perfect for driving moderate-sized sound systems, whether in a church, auditorium, or live event. Its 70V and 100V compatibility allows for easy integration into existing audio setups, making it suitable for various applications.

The 180MA boasts a lower power output while retaining the same high-quality audio performance that Crown is renowned for. With 180 watts per channel, it is perfect for smaller installations where space and power consumption are considerations. This amplifier also features built-in processing capabilities, allowing users to fine-tune audio output to suit specific acoustic environments. Its compact design and robust construction make it a reliable choice for both permanent installations and portable setups.

The 280MA stands out with its increased power capacity, offering up to 280 watts per channel. It is designed to handle larger loads, making it ideal for venues that require robust sound reinforcement. Like its counterparts, the 280MA features advanced thermal management technology, ensuring reliable operation even during extended use. The inclusion of both analog and digital inputs provides versatility in connectivity, accommodating traditional audio systems alongside modern digital setups.

All three models share some key features, including an intuitive front-panel LCD for easy monitoring of performance metrics and settings. They also include comprehensive protection circuitry, safeguarding against over-voltage, over-current, and thermal overload, thereby ensuring long-term reliability.

In summary, the Crown Audio 1160MA, 180MA, and 280MA amplifiers excel in delivering high-fidelity audio across a range of applications. With their efficient Class D technology, advanced processing options, and robust construction, these amplifiers represent a union of power and flexibility, catering to audio professionals seeking performance and reliability in their sound systems.