CMA 300.4
4ch 300W power amplifier
The CMA series feature compact, light and powerful high voltage Class-D amplifiers dedicated to fixed installations. Each channel has a balanced input and output with separate volume controls.
Features
4 inputs and output channels
Switching power Class-D circuitry
Ch A&B feature an adjustable High-Pass Filter & Ch C&D (bridged) feature a low pass filter for use in 2.1 applications
All amplifiers feature warning information and commands, like Failure Status, Amplifier Disable, Priority and Test Alarm for easy reporting and servicing.
Designed to be highly efficient, the CMA series of amplifiers feature 1U amplifiers capable of driving speaker loads with low impedance up to 2 ohms per channel. The connections are done with screw type terminal connectors for easy installation. Additional GPIO provides options for monitoring simplifier status and disabling audio for emergency alarm systems. The CMA 300.4 also features an option to select the first two channels with a high pass filter for mid-high speakers and bridge the last 2 channels with a low pass filter to power a subwoofer. All channels have individual volume controls with LED indicators for signal present, clip and protect mode.
Features
4 inputs and output channels
Switching power Class-D circuitry
Ch A&B feature an adjustable High-Pass Filter & Ch C&D (bridged) feature a low pass filter for use in 2.1 applications
All amplifiers feature warning information and commands, like Failure Status, Amplifier Disable, Priority and Test Alarm for easy reporting and servicing.
Specifications
Model | CMA 300.4 | CMA 500.4 | |
Power (Both channels Driven) | 2Ω (EIAJ) 4Ω (RMS) 8Ω (RMS) | 450W x 4 270W x 4 150W x 4 | 800W x 4 450W x 4 250W x 4 |
Bridge Mono Mode | 4Ω (EIAJ) 8Ω (RMS) | 500W x 2 360W x 2 | 900W x 2 500W x 2 |
Input Sensitivity (limiter off) | 0.9 - 1.1V (+0 / -1 dBV) | ||
Input Impedance | 20kΩ balanced / 10kΩ unbalanced | ||
Frequency Response (at 10 dB below rated output power) | 20Hz - 20kHz (+0/-1 dB) | ||
Voltage Gain | 30 (+/-0.5dB) | 33 (+/-0.5dB) | |
THD + N (ref 1kHz, 1/8 rated power, A-Weighted) | <0.5% | ||
S/N Ratio (ref 1kHz, A-Weighted) | > 96dB | ||
Crosstalk (below rated power) | > 70dB | ||
Damping Factor (1kHz, 8Ω) | > 200 | ||
Power / output circuitry | Switching Power Class D | ||
Protections | Full short circuit, open circuit, thermal, ultrasonic & RF protection stable into reactive or mismatched loads, turn ON/OFF, muting | ||
Controls | Front: ON/OFF power switch, Volume Channel A, B, C, D Rear: 8 Preset modes | ||
Indicators | Power x1, Signal / Protection / Clip x4 channels | ||
Connectors | Input : Euroblock / Output : Euroblock | ||
Power Supply | AC: 110-120V or 220-240V 50/60Hz | ||
Dimensions (W x D x H) | 483 x 360 x 44 mm | ||
Weight | 6.2 kg | 6.3 kg |