Generally, the invention of subwoofers goes back to the 1960’s when they were developed to add bass response to home stereo systems. Subwoofers came into greater popular consciousness in the 1970’s. Then, year by year, they started to be used in different places such as in nightclubs, during concerts, in cars and boats.
Undoubtedly, no matter how soft or loud the volume level is when you like to listen to music, a quality subwoofer will improve your overall listening experience and make everything sound more balanced and full.
Our team has analyzed marine subwoofer reviews to help you to choose the best boat subwoofer. We have information for you to read about the essential factors and features of marine subwoofers that you need to focus on before choosing perfect one.
Audio frequency is an audible periodic vibration measured in hertz. The higher the frequency, the higher-pitched the sound. On average, humans have the ability to hear sounds within the range of 20 to 20,000 Hz.
Subwoofers are loudspeakers are built to reproduce the lowest audible frequencies. Some subwoofers can produce tones below 20 Hz. However, as frequencies drop below 20 Hz, fewer people are able to discern the sound. Under optimal conditions, where a listener has exceptional hearing and the environment is free of competing sounds, the human ear is capable of picking up frequencies as low as 12 Hz. Typically, though, frequencies within the range of 4 to 16 Hz can be felt, but not heard.
A subwoofer is capable of producing such pitches is contributing physical vibrations, rather than audible sound.
As a general recommendation, it’s wise to limit a subwoofer’s range to 100 Hz and below, through the use of a crossover. Crossovers limit the frequency response of a speaker. Subwoofers typically employ a crossover called a “low-pass filter.” A low-pass filter only permits source frequencies of a certain hertz and below, to reach the subwoofer.
For example, a subwoofer might be capable of producing sound in the range of 20 to 200 Hz, but a crossover could limit the sub to producing only frequencies of 100 Hz and below. This is desirable if other speakers in the system are capable of handling frequencies of 100 Hz and above, and the system builder wants the subwoofer to contribute only the very lowest of tones.
One of the most important features of a subwoofer is its sensitivity. Sensitivity may be an odd word to use in conjunction with a subwoofer, but in context it makes a lot of sense. When describing subwoofers, the term refers to the speaker’s overall efficiency. It is all about sensitivity to input. A high-efficiency subwoofer needs less power to produce the same level of sound than a lower efficiency one, and for many prospective purchasers that can make all the difference.
Just like sound pressure, subwoofer sensitivity is measured in decibels, and the higher the rating the less power it uses to produce sound of a given intensity. The actual figure is determined by the speaker loudness as measured at a distance of one meter, when given an input of one watt. This figure can range from approximately 80 dB to 100 dB, depending on the subwoofer. A difference of three decibels in the sensitivity rating, is equal to twice the power efficiency, as it takes twice the power actually reaching the speaker to increase the sound pressure by that amount. This can be very important, because the more power a set of subwoofers uses, the less power there is for other audio components.
Sensitivity is important for subwoofers because they generally require more power than midrange speakers and tweeters. This isn’t only a matter of overall power draw, but also a matter of heat, as every watt that does not go into producing sound is eventually turned to heat. The greater the power requirements, the more heat that needs to be dissipated.
The power handling of a subwoofer is very much dependent on the type of music reproduced. Since a music signal simultaneously consists of a broad range of frequencies, it is not possible to define maximum power handling in meaningful terms. If you want a system that really “booms”, there’s no substitute for plenty of power. Pay attention to the RMS power ratings, not the peak power ratings. RMS ratings measure continuous power handling or output and are a much more realistic measure than peak power. Make sure you match the sub’s power handling to your amp’s power output.
When you’re shopping for subwoofers, or looking for a way to improve the sound of your vehicle’s audio system, consider how important the tweeter is to you. Both the shape and the material it’s made from, have a direct impact on how your music sounds.
Tweeters reproduce the upper frequencies in your music — the vocals, guitars, horns and other high notes, that make the music sparkle and come to life.
Manufacturers try to balance several factors when they design a tweeter, including sound quality, sound dispersion, and cost. The ability of the tweeter to stop moving quickly when the music ends — damping — is also very important in creating accurate sound. To these ends, they employ different tweeter shapes and materials.
The basket is the metal frame that holds all the components of a subwoofer together. The basket’s rigidity and resistance to resonance help determine the sub’s sound quality. So, it’s very important to pay attention to the basket material.
Since they’re not shielded from the elements, for marine subwoofers, lastingness is a distinguishing feature from car speakers and car subwoofers. You should ensure the subwoofers are “waterproof”, (the correct terminology for these), meaning that they’re able to work well on the water. Marine subwoofers are out in the open, where they’ll be subjected to salt, water and sunlight.
The woofer ought to be produced of a stiff polypropylene-based substance that shift, or won’t warp, when splashed with water. The loudspeaker must also be immune to UV rays, salt and high-humidity settings like fog.
Subwoofers are all tested in salt, spray or fog conditions, but, they will not work well if immersed in water.
It’s true that installing subwoofers adds a rich bass sound to a vehicle’s stereo system. When used appropriately, subwoofers can be extremely effective and very convenient. Equally, though, it is very easy to destroy any chance of the good-monitoring quality, with an inappropriate or badly set-up subwoofer.
Poor subwoofer installations usually suffer from too much, or poorly defined, bass. Often there is an obvious ‘hole’ in the frequency spectrum in the crossover region, between the satellite speakers and the subwoofer. It is the ‘integration’ through this crossover region that really makes or breaks the system as a whole.
The worst kind of subwoofer system will only provide a “boomy” or monotonal “woomf” of energy, regardless of the pitch or dynamics of the bass instrument, and the bass might thus appear to be slow or late relative to the main speakers. On the other hand, a well-designed and well-configured system will usually enable more accurate imaging, and have a clearer, more transparent mid-range and higher overall output than could be achieved with the satellites alone.
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