This Scan-speak 13M/8640, 4" midrange has a very low resonance frequency for its size and can be used in an extremely wide band width. It features a magnesium cast frame, paper cone and rubber surround. The magnet system uses the Scan-speak Symmetric Drive short circuiting system for less distortion and a linear impedance. This driver has a rich full-bodied sound, detailed and clean, with a natural tonal balance. Intended uses are high quality 3-way systems that require low crossover frequencies.
Imp - 8 ohmSPL - 87.5dB Fs - 64 HzVas 5 litersQts 0.24Outside diameter: 130mmCut out: 100mmDepth: 48mm