By Nina Leggett. Car Audio. Published at Saturday, April 21st, 2018 - 18:55:35 PM.
Bandpass boxes: Maximum slam. Bandpass boxes are a special type of ported box designed for maximum slam. The woofer is mounted inside a dual-chambered box (one chamber sealed, the other ported), with the sound waves emerging from the ported side. The sound that comes out of the port is extra loud within a narrow frequency range.
Power for upgraded speakers — A factory system or an in-dash receiver may not do justice to your upgraded speakers. If you're adding high-quality aftermarket speakers or component systems to your vehicle, they may require more power for peak performance than your existing in-dash receiver can provide.
Number of voice coils — Dual voice coil subwoofers are a popular choice among car audio enthusiasts who want more flexibility in wiring their sound systems. While typical subwoofers have a single voice coil, dual voice coil (DVC) subwoofers use two separate voice coils, each with its own connections, mounted on one cylinder, connected to a common cone.
If you drive a compact coupe or hatchback, a sports car, or a small-cab pickup, for instance, a 50 watts RMS per channel, or smaller, amp will probably do fine, overcoming road noises and adding clarity to your music. Look for speakers with a top RMS rating of at least 35 watts RMS (using the 75%150% rule) to go along with the amp. For larger vehicles and for those who just want more volume, you should step up to at least a 75 watts RMS per channel setup. A difference of 5 or 10 watts either way won't make any difference and probably can't even be heard. Matching speakers will need to each have a top RMS rating of 50 watts RMS or more.
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