Nx Audio Rx 4000 Circuit Diagram __link__ -

This is a helpful, practical look at the NX Audio RX 4000 (likely a 4-channel, 4000W-max class AB or class D amplifier, common in pro-audio/budget car audio).

While the RX 4000 is a brute-force amplifier—relying on massive transformers and robust transistors—it is surprisingly repairable if you understand its signal flow. Download the schematic, buy a pack of IRFZ44Ns and 2SC5200s, and bring this club thumper back to life. nx audio rx 4000 circuit diagram

• Trace the Power Supply: Identify failed MOSFETs in the SMPS (Switched-Mode Power Supply).
• Diagnose Protection Mode: Locate the DC offset and over-current sensing circuits.
• Replace Output Transistors: Find the correct biasing points for the final stage.
• Understand Signal Flow: Follow the audio path from RCA inputs to speaker terminals.

Step 1: Identify the Test Points

Most schematics will contain voltage test points labeled TP1, TP2, etc. For the RX 4000, look for: This is a helpful, practical look at the

Short Circuit & Overload Protection: Prevents damage during output faults. Trace the Power Supply: Identify failed MOSFETs in