18 inch subwoofer. 350 watt. Met ingebouwde passieve crossover 36 Hz- 210 Hz
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The Electro-Voice Force Sub
is an 8-ohm, dual-15-inch subwoofer system designed to reproduce high impact bass program material from a small, compact,
easily portable enclosure. The Force Sub is intended for use with the Electro-Voice Force full-range stage system, and incorporates a built-in lowpass filter to allow
parallel operation of both systems from a single amplifier channel. When connected in parallel, the combined impedance is 4 ohms. Conventional biamplified operation is
also possible using an active electronic crossover of 12, 18 or 24 dB per octave and a crossover frequency between 80 and 125Hz. No internal wiring change is required for
biamp operation because the built-in first-order low-pass filter is only effective above 125Hz. In either mode of operation an active low-frequency protection filter is strongly
recommended to reduce unwanted program content below 40Hz. (Bass guitar open low “E” is approx. 41.2Hz) These very low frequencies are not only potentially damaging to the woofers,
they also waste massive amounts of amplifier power and cause needless distortion of the upper frequencies.
