You're looking for a JBL N7000 schematic and maybe a good story to go with it!
Keep in mind that working with electronics can be hazardous, especially when dealing with high-power audio systems. If you're not experienced with electronics repair, it's recommended to seek professional help. jbl n7000 schematic
The JBL N7000 is a classic high-frequency crossover network, originally designed for professional and high-fidelity "legacy" systems, most notably for the JBL 077/2405 super tweeters. You're looking for a JBL N7000 schematic and
The Output Stage and Protection CircuitryConclusion
3.5 Class‑D Power Amplifier
Topology – Full‑bridge configuration (4 MOSFETs per channel) driven by a gate‑driver IC (IR2110) that receives a 400 kHz PWM signal from the DSP.
Switching Frequency – 400 kHz (selected to push the switching noise beyond the audible band while keeping MOSFET switching losses manageable).
Output Filter – LC low‑pass (L = 2.2 µH, C = 4.7 µF) per channel, tuned to 20 kHz – 22 kHz to attenuate PWM carrier.
Feedback Loop – A current‑sense resistor (0.1 Ω) provides a feedback voltage to the DSP for closed‑loop control of output power and for the limiter function.