While a single universal schematic may vary slightly by manufacturing year, the standard typically includes the following critical stages:
Technicians often refer to the circuit diagram to address common issues like "shorting" or thermal shutdown.
Class AB (though some variants or modules may utilize Class H or Class D depending on the specific series iteration).
Employs multiple pairs of power transistors (commonly 2SC5200 or similar high-current bipolar junction transistors) to drive the load. These are arranged to provide a high damping factor (over 400), which ensures tight control over woofer movement.
The RX 4000 serves as a "workhorse" in the NX Audio lineup, providing significant power output across multiple impedances. Its design prioritizes "zero noise" operation and high thermal stability.
NX Audio RX4000 Professional Power Amplifier | Low Voltage Operation