![]() Free-air Subwoofers: In this type of enclosure, we have the woofers mounted to a board attached to the rear deck or placed in the trunk against the rear seat with the trunk acting as the enclosure housing the subwoofer.The woofer is mounted inside a dual-chambered box so that it fires from the sealed chamber into the ported chamber. Bandpass Box: This is a special type of ported box designed for maximum bass. ![]() This works well for any music that demands tight, accurate bass. Sealed Box: This is an airtight enclosure housing the subwoofer.Ported box provides more output than a sealed box at any given level of the amplifier output. This additional air movement reinforces low bass response. Ported box: This uses a vent to allow for air movement in and out of the enclosure chamber.What Are the Different Types of Subwoofer Enclosure? A subwoofer rated at 2-ohm impedance will produce more output than a 4-ohm subwoofer, given similar input wattage, because the resistance is lower. Impedance: This is the resistance offered by an electric circuit to the flow of alternating current and is measured in ohms.Peak power rating, on the other hand, is the amount of power the subwoofer can handle as a brief burst during a musical peak. Make sure you match the sub's power handling to your amp's power output (measuring in watts). RMS ratings measure continuous power handling or output and are a much more realistic measure than peak power. Pay more attention to RMS power ratings, as opposed to peak power ratings. Power: If you want a powerful car system, then you can't afford to overlook power.Independent wiring, on the other hand, lets you drive a single sub without bridging. In series/parallel mode, you can connect 4 woofers to a single amp, and still maintain a compatible impedance. There three ways that you wire your subs, parallel, series, and parallel/series. Parallel wiring provides for maximum amplifier output, whereas series wiring lets you configure multiple woofers to one amplifier at an acceptable impedance. ![]() While typical subwoofers have a single voice coil, dual voice coil subwoofers use two separate voice coils, each with its own connections, mounted on one cylinder, connected to a common cone.
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