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CROWN 280MA Stereo Commercial Audio Series Mixer-Amplifiers
- Stereo Dual 80W power amplifiers for two-zone systems. Minimum guaranteed power into 4 ohms or 70V/100V output: 80W maximum power at 1 kHz with 0.5% THD.
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Learn more about the Crown 280MA
| Brand | CROWN |
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| Model | 280MA |
| Channels | Stereo |
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| Other Specifications | Signal to Noise Ratio (ref. to rated power, master volume at minimum): 85 dB. DC Output Offset: < ±5 mV. Input Sensitivity (for full output at maximum gain): Balanced mic inputs 3 mV, balanced line inputs 800 mV, RCA connectors 400 mV. Input Impedance (nominal): Mic 400 ohms, line 100 kilohms, RCA 50 kilohms. Crosstalk: –70dB at 1kHz. Line Output Level (nominal): 1V into 10 kilohms. Phantom Power: 15 VDC. Operating Temperature/ Humidity: 0 degrees C to 40 degrees C at 95% relative humidity (non-condensing). Storage Temperature: –20 degrees C to 85 degrees C. |
| Power Output | Dual 80W power amplifiers for two-zone systems. Minimum guaranteed power into 4 ohms or 70V/100V output: 80W maximum power at 1 kHz with 0.5% THD. |
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| Frequency Response | Frequency Reponse (at 1 watt from 4-ohm tap, 70 Hz - 19 kHz): +/- 1 dB. Frequency Response (at line out, 20 Hz to 20 kHz): +/- 1 dB. Power Bandwidth (at 4-ohm tap, 2 dB below maxium 1 kHz power): 50 Hz to 20 kHz with < 0.5% THD. |
| THD | Less than 0.5% at rated power at 1 kHz. |
| Multi Zone | Yes |
| Other Connectors | Amplifier Outputs Connectors: One per channel, 4-position terminal strip with Com, 4 ohms, 70V and 100V terminals; accepts up to 14 AWG terminal forks, non-touch cover included. Output VCA Connector: 4-pin Phoenix-type connector for two VCA control lines of +10 VDC and ground; compatible with Crown 1-VCAP and 4-VCAP modules. Priority Connector: 3-pin Phoenix-type connector shall allow Input 1 or Input 5 to mute other input signals by contact closure. Line Out Connector: One 3-pin balanced Phoenix-type connector per output channel, post master, pre-VCA, with level control. Input Connectors shall include a Mic/Line Connector of 3-pin Phoenix-type, balanced, one per input channel, and a dual RCA Input Connector for stereo music signals, unbalanced, summed together, two connectors per input channel. |
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| Power Supply | AC Line Voltages Available: 100V 50/60 Hz, 120V 60 Hz, 220V 50/60 Hz, 230V 50/60 Hz, 240V 50/60 Hz. |
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| Features | Front Panel Controls and Indicators Front panel controls and indicators shall include the following: Power Switch: Pushbutton on-off switch. Input Volume Controls: eight microphone/line, detented potentiometers with knobs. Output Volume Controls: One per output channel, detented potentiometer with knob. Tone Controls: Bass and Treble non-detented recessed potentiometers on each input channel, Bass ±10 dB at 100 Hz, Treble ±10 dB at 10 kHz. Power Indicator: Blue LED indicates power on. Input Signal Presence Indicator: Green LED, one for each input channel, illuminates when input signal exceeds 100 mV (45 dB below full power) from the 4-ohm tap; shall not respond to signals from the AMP INPUT connector. Output Signal Presence Indicator: Green LED, one for each input channel, illuminates when input signal exceeds 100 mV (45 dB below full power) from the 4-ohm tap; shall not respond to signals from the AMP INPUT connector. Clip Indicators: Red LED, one per output channel, illuminates at threshold of audible distortion, shall not respond to signals from the AMP INPUT connector. Rear Panel Controls and Connectors Rear panel controls and connectors shall include the following: Reset Switch: Resets the circuit breaker that protects the power supply; 220/230/240V units shall have a fuse instead. AC Power Inlet: Detachable IEC. Auxiliary Power Input: 2-position terminal strip for 24 VDC (±10%) backup power; accepts up to 14 AWG terminal forks. Amp Config Switch: A DIP switch with two functions which shall be: 1. Assign an input as the priority input for each output, thereby temporarily muting the remaining inputs; muting is activated by contact closure. 2. Global enable switch for phantom power, shall not affect RCA inputs. Input Routing Switch: DIP switches shall assign each input signal to each output, two switches per input. Mic/line Switch: Selects mic-level or linelevel signals, one switch for each balanced input. |
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| Dimensions | 19" x 3.5" x 12.2" |
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| Weight | 21 lbs. |
| Package Contents | Included accessories shall be a power cord, detachable rack ears, screws for rack ears, non-touch cover for output connectors, Phoenix-type connectors, and spade lugs. Optional accessories shall be a 1-VCAP remote volume control for one channel, and a 4-VCAP remote volume control for four channels. |
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| First Listed on Newegg | May 23, 2008 |
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Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies
- Return for refund within: Non-refundable
- Return for replacement within: 30 days
- This item is covered by Newegg.com's Replacement Only Return Policy.
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Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-342-6939
- Support Website
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