Nx Audio Rx 4000 Circuit Diagram [ Recent | 2027 ]
The signal enters through balanced XLR inputs, passing through an input buffer/limiter stage. The circuit diagram shows an Input Sensitivity Selector (usually 0.775V, 1.0V, or 1.44V) and a switchable limiter circuit designed to prevent clipping distortion before it reaches the main amplification stages. B. The Crossover and Processing Stage
This article breaks down the core sections of the NX Audio RX 4000 circuit design, explaining how its internal components manage power, protect speakers, and amplify audio signals. 1. Power Supply Unit (PSU) Stage
: A key feature on the rear panel is the mode selector switch. The circuit of the RX 4000 allows for three configurations:
: If the protection LED stays illuminated, check for offset voltage at the speaker terminals before the relay stage. This indicates a unbalanced breakdown in the push-pull stages. nx audio rx 4000 circuit diagram
What is the amplifier showing? (e.g., Protect light on, blowing fuses, distorting, dead)
Before you order replacement MOSFETs or op-amps, take the time to study the power supply section of the diagram. Locate the PWM controller, measure its Vcc pin for voltage, and verify the feedback loop. With the correct schematic in hand and a multimeter, even a complex failure in the RX 4000 becomes a manageable repair.
When servicing an RX 4000 on the test bench, technicians generally focus on specific areas of the circuit diagram. The signal enters through balanced XLR inputs, passing
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.
The foundation of the RX 4000 circuit is its high-current power supply. This stage converts incoming AC mains voltage into the stable DC rails required by the power transistors.
While the exact proprietary schematic belongs to the manufacturer, the RX 4000 utilizes a classic high-power . 1. Class H Topology and Power Efficiency The Crossover and Processing Stage This article breaks
Bias is wrong, or output transistors are desoldered.
Before diving into the individual circuit blocks, it helps to understand the electrical performance boundaries designed into the schematic: Specification Stereo Mode (Per Channel) Bridged Mono Mode 4 Ohms Load 2 Ohms Load Not Recommended Circuit Class Damping Factor Frequency Response 20Hz - 20kHz 20Hz - 20kHz Slew Rate Core Circuit Blocks of the RX 4000 Schematic The complete circuit schematic of the NX Audio RX 4000 Go to product viewer dialog for this item.
About 95% correct. I did find two minor discrepancies:
Utilizes a heavy-duty toroidal transformer with pure copper windings and silicon steel-sheet cores to minimize electromagnetic loss. Premium high-heat-resistant capacitors are used for filtering, ensuring a stable DC rail (typically converting 60–80V AC to 95–100V DC) even under heavy bass loads.
A sensing circuit continuously monitors the output terminals. If a transistor fails and leaks raw DC voltage to the speakers, a high-current output relay instantly disengages, saving the voice coils from burning out.
