The is a legendary dividing network (crossover) designed by James B. Lansing Sound, Inc. to enhance the high-frequency reproduction of vintage JBL speaker systems. Its primary purpose is to integrate the 075 "Bullet" UHF (Ultra-High Frequency) driver into an existing two-way system, adding sparkling brilliance above
Treat this schematic with respect. It represents a golden era of engineering when JBL built components to last a lifetime. Now go fix that crossover.
Once you have the schematic, here are the most common issues and how to address them.
Are you planning to a vintage unit, or are you trying to build a clone from scratch for a new DIY project? jbl n7000 schematic
Addition of the 075 Bullet Tweeter to high-quality systems. Analyzing the JBL N7000 Schematic
Before diving into the circuit topology, it is important to understand the operational parameters of the JBL N7000: 7,000 Hz (7 kHz)
A variable control knob (often marked 1-4) used to adjust the output level of the high-frequency driver. Wiring & Integration The is a legendary dividing network (crossover) designed
Do you own an , or are you building one from scratch ?
Use an LCR meter to verify the total impedance of the network before reinstalling it into your loudspeaker system.
(bullet tweeter), to existing high-quality two-way systems to provide extra "brilliance" in the upper frequencies. www.cieri.net Schematic & Technical Specifications The N7000 is a 12 dB/octave second-order crossover with a crossover frequency of Second-order (12 dB per octave) filter. Low-Pass Section: Its primary purpose is to integrate the 075
While exact vintage schematics are primarily available through technical archives like Lansing Heritage or Cieri.net , the standard circuit utilizes a slope for both high-pass and low-pass sections. Key components identified in N7000/3105 circuits include:
Keep in mind that schematics for professional audio equipment may be harder to find due to copyright and proprietary concerns.
Do you have a specific repair question about your JBL N7000? Leave a comment below (on the original forum) or consult the technical library at The Lansing Heritage Foundation.