Jbl N7000 Schematic ((link)) Jun 2026

The N7000 features a unique 3-step attenuator (often labeled "Normal," "-3," and "-6"). This is not a variable L-Pad but a rotary switch selecting different series resistors to pad down the tweeter to match the efficiency of the midrange driver (which is significantly louder).

The N7000 is nearly 70 years old. Electrolytic capacitors dry out. Inductors drift. Resistors burn up. When these crossovers fail, they don’t just sound bad—they can destroy your tweeters. A failed capacitor can send low-frequency energy to a delicate 075 tweeter, frying its aluminum voice coil in seconds. jbl n7000 schematic

The (and its professional equivalent, the 3105 ) is a vintage high-frequency dividing network specifically designed to add super-tweeters like the JBL 075 or 077 to existing two-way speaker systems. Circuit Schematic Overview The N7000 features a unique 3-step attenuator (often

Two-cell network with a low-pass for the mid/horn and high-pass for the tweeter. Electrolytic capacitors dry out

passive network, providing a relatively steep slope to ensure a clean transition between drivers. While internal values can vary slightly between production years (specifically for 8-ohm vs. 16-ohm versions), the core topology remains consistent. JBL DIVIDING NETWORK INSTRUCTION MANUAL

The 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.

: If the system sounds overly bright, check the L-Pad resistors or inspect the 075 diaphragms for cracks, which can be seen through the mouth of the horn without disassembly.