Most units feature a continuously variable ALPS level control or L-pad to adjust the tweeter output to match the room acoustics. Specifications and Compatibility
The network contains two capacitors and two inductors . jbl n7000 schematic
Uses an inductor in series with the signal to roll off frequencies above 7 kHz for the midrange/woofer (like the JBL 375 driver). Most units feature a continuously variable ALPS level
The N7000 circuit is relatively simple, consisting of two "cells" designed to provide a 12 dB per octave rolloff on each side of the crossover point. Typically set at 7,000 Hz . 000 Hz .