Nx Audio Rx 4000 Circuit Diagram Link Jun 2026

If you’re an intermediate tech with a multimeter and scope, this diagram makes the RX 4000 fixable. Beginners might struggle—the diagram assumes you understand split rails, current mirrors, and thermal tracking. Still, it’s the only proper documentation out there for this amp, and it’s worth tracking down.

NX Audio RX4000 Professional Power Amplifier | Low Voltage Operation nx audio rx 4000 circuit diagram

A complex part of the rx 4000 diagram is the protection logic. You will find: If you’re an intermediate tech with a multimeter

| Test point | Expected (AC mains version) | Car version (SMPS) | |--------------------------------|-----------------------------|--------------------| | Main rails (after rectifier) | ±45V to ±70V | ±35V to ±55V | | Op-amp supply pins (e.g., NE5532 pin 4 & 8) | -15V / +15V | -15V / +15V | | Output transistor bias (Vbe) | 0.5–0.6V | same | | Speaker terminal DC offset | < ±50mV | < ±50mV | NX Audio RX4000 Professional Power Amplifier | Low

: Includes built-in 160Hz High-Pass and Low-Pass filters , allowing the amplifier to be used specifically for subwoofers (Infra Bass) or full-range systems without external processing . Technical Specifications Go to product viewer dialog for this item.

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