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MATRIX MA-1 Power Amplifier
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MATRIX MA-1 Class AB Power Amplifier Stereo 2x450W / Mono 1x900W 4 Ohm
The Matrix MA-1 power amplifier is part of the brand's M series, completed by the MS-1 streamer and MP-1 preamplifier. This new series features a new design, both in terms of appearance and internal structure. This power amplifier is capable of delivering up to 2x 450W at 4 ohms and 1x900W at 4 ohms in bridged mode. Connections include the essentials, as well as two 12V triggers. A switch allows gain to be adjusted to 2 levels for greater compatibility with different types of preamplifier and speakers. As for its power supply, Matrix has chosen to integrate an independent transformer per channel and numerous capacitors for an extremely reliable, clean power supply.
MATRIX MA-1: a high-performance power amplifier
The Matrix MA-1 power amplifier uses a Class AB amplification system with a parallel multi-triode push-pull output stage. 10 ONSEMI transistors per channel compose the push-pull amplification circuit, reducing the impedance at the amplifier's output terminals. Powerful, the MA-1 delivers up to 2x 450W at 4 Ohm and 1x900W at 4 Ohm in bridged mode.
Stereo mode
Each channel is processed independently for a high level of detail and precision.
Bridged mode
In bridged mode, the combination of two MA-1s gives you up to 2x900W of power at 4 ohms. This makes it possible to drive all types of speaker, even the most difficult.
Mono mode
In mono mode, you can power two loudspeakers in a configuration with two MA-1 amplifiers and create a bi-wiring connection.
MATRIX MA-1: Gain control
The MA-1 amplifier has two gain settings. A normal setting is equivalent to +30dB, and an attenuation setting to +24dB. This allows the MA-1 to be paired with a wide range of preamplifiers and speakers available on the market.
MATRIX MA-1 : une alimentation symétrique
The MA-1 power supply incorporates one transformer per channel for a totally balanced design and a total power of 1250VA. Added to this are 14 parallel-connected capacitors per channel, each rated at 6,800uF. This means a total of 190,000uF per channel. The advantage compared to using a single capacitor of this power lies in the fact that it limits the internal resistance for greater flexibility in managing significant currents.
MATRIX MA-1: advanced cooling system
Two sensors located on the main heat sink are connected to the MA-1 microprocessor for continuous evaluation of the unit's temperature. When the temperature exceeds a certain threshold, a large, silent fan (approx. 18cm in diameter) starts up, adjusting its speed dynamically.
Matrix MA-1 connector overview
| 1 | Mode selector: Stereo / Bridge / Mono |
| 2 | Gain adjustment |
| 3 | RCA/XLR input selector |
| 4 | XLR stereo input |
| 5 | RCA stereo input |
| 6 | Service port |
| 7 | Trigger IN/OUT |
| 8 | Mono/Bridge input |
| 9 | Right channel speaker terminal output |
| 10 | Power switch |
| 11 | Fuse |
| 12 | IEC power supply |
| 13 | Left channel speaker terminal output |
Technical characteristics
| Specifications | |
|---|---|
| Product type | Power amplifier |
| Amplification type | Class AB |
| Inputs | 1x RCA stereo 1x XLR stereo |
| Output | Speaker terminals |
| Input sensitivity | 1.48Vrms @ Stereo/Mono mode 1Vrms @ Bridge mode |
| Output power | Stereo / Mono mode: 2x 250Wrms @ 8Ω, 2x 450Wrms @ 4Ω Bridge mode: 1x 500Wrms @ 8Ω 900Wrms @ 4Ω |
| Frequency response | 20-20kHz (+0, -0.15dB - 142kHz@-3dB) |
| SNR | -122dB @ +24dB A-weighted -118dB @ +30dB A-weighted |
| THD+N | <0.02% @ 250W 8Ω Stereo/Mono mode <0.06% @ 500W 8Ω Bridge mode |
| Crosstalk | -120dB |
| Gain | +24dB +30dB |
| Load impedance | 2-16 ohm Stereo/Mono mode 4-16 ohm bridge mode |
| Trigger | In: DC 6-12V <10ma Out: DC 12V/50mA Max. |
| General | |
|---|---|
| Power supply | AC 220V-240V 50/60Hz |
| Standby power consumption | < 1W |
| Energy consumption | 250-300W |
| Max. power consumption | < 1250W |
| Dimensions | 430 x x 518 x 201mm |
| Weight | 42.4kg |
| Color | Silver |
| Package | 1x Matrix MA-1 power amplifier 1x Trigger cable 1x Power supply cable |
| Input | RCA |
| Input | XLR |
| Output | Speaker terminal |
| Color | Silver |
| Channel | 2 (Stereo) |
| Class | Class A / AB |
| Amplifier chip | Transistors |
| Power (W) | 450.0 |
| Power (W) | 900.0 |
| Remote Control | No |
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