![]() ![]() This forces out more air, as it is coming from both the speaker and the port. Port: Some subwoofer enclosures offer an additional port. Passive radiators can either be speakers with the voice coil removed or a flat diaphragm. This increases efficiency and preciseness. Passive Radiator: Some subwoofer enclosures incorporate a passive radiator in addition to the speaker. This means that all of the air is pushed out directly from the speaker driver into the room. Sealed Cabinet: Some subwoofer speaker drivers are enclosed in a sealed enclosure. ![]() A Side-firing subwoofer is one where the speaker driver (or two drivers) are mounted on each side of the subwoofer so that the bass sound emanates from one or both sides.A Down-firing subwoofer is one where the speaker driver is mounted facing down so that the sound emanates from out of the bottom of the subwoofer toward the floor.A Front-firing subwoofer is one where the speaker driver is mounted so the bass sound emanates from the front of the subwoofer enclosure.Monoprice Monolith 13-inch Subwoofer How Subwoofer Speaker Drivers Are Mounted In addition to how power and audio signals get to a subwoofer, there are other features that the subwoofer has that contribute to its bass role. For the powered subwoofer to work, in addition to AC power, a line output (sub out or LFE out) from a home theater receiver needs to connect to the subwoofer.Ī powered subwoofer takes excessive power load away from the amp/receiver so that the amp/receiver can power the other speakers in a system more efficiently, Most subwoofers used in home theater setups are powered. Powered subwoofers incorporate both the subwoofer speaker driver and an amplifier inside the same enclosure. Monoprice Monolith M-IWSUB82 In-Wall Subwoofer Monoprice Monolith SWA-400 Subwoofer Amplifier The external amplifier may be part of an amplifier that powers the rest of the speakers or more typically, an external subwoofer amplifier that is placed between a preamp or home theater receiver (via a subwoofer output) and the speaker terminals of a passive subwoofer. Subwoofer TypesĪ passive subwoofer needs to be powered by an external amplifier. Tip: The role of the subwoofer is the same regardless of how many channels and speakers are in the rest of your system. In addition, a subwoofer is assigned to reproduce low frequencies (usually below 120Hz). In what is considered a basic surround sound system (5.1 channels), there are five main speakers: Left, Center, Right, Left Surround, and Right Surround. To provide more sonic impact (hearing and feeling), you need a subwoofer which is a specific type of speaker that handles only the lowest frequencies that other speakers can’t reproduce. What a Subwoofer Is REL HT/1205 MKII and HT/1003 MKII Subwoofersįor movies and bass-heavy music, a woofer may not be able to reproduce all of the low frequencies. Many times, especially for compact speakers, the midrange and woofer are combined into a single speaker (aka a 2-way speaker). This is referred to as a three-way speaker. Tweeters are designed to handle high frequencies, the Midrange driver handles the frequencies associated with vocals, while a Woofer handles the low frequencies. In order to experience great sound in a speaker setup, you need speaker drivers that provide clarity, depth, and the ability to provide a full range of audio frequencies. Ecoustics’ Robert Silva dives into the basics of subwoofers and what you need to know. ![]()
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