How Can We Overcome Low-Frequency Noise with JL Audio Marine?

Camilo Jaime • February 11, 2022

One of the biggest enemies of any sound system is noise. It can come from anywhere, either from power fluctuations, interfering signals of wireless devices, or even a wrong input. The very definition of noise is any unwanted electrical signal. 


Noise can range from a low frequency sound, which measures 500 Hz and below, to higher frequencies beyond 2000 Hz but still audible. Most commonly, a sound system encounters low-frequency noise such as a humming sound. Luckily, reputable brands, such as JL Audio, design their sound systems that eliminate such noise to provide you with the sound quality you wanted.


To understand JL Audio Marine sound systems' capability in overcoming low-frequency noises, continue reading below.

What Is JL Audio Marine?

JL Audio has been in the sound system industry that caters to cars. It has a very high reception among the consumers that the American manufacturer is considered one of the best aftermarket car audio systems aside from being one of the pioneers. 


JL Marine Audio is a product of JL Audio that focuses on making sound systems for marine vessels, more notably on boats and yachts. Since those vehicles are meant for leisure and relaxation, the audio systems that support entertainment are necessary. 


The products catered for marine audio systems are needed to be waterproof depending on the manner of installation. There are amplifiers and speakers available that are put in enclosures. The connectors used also are designed for heavy-duty usage.

Operation of JL Audio Marine Products

JL Marine Audio products can be categorized as 4: 

  • Source units, which accept the input from audio players such as CD players, MP3 players, and smartphones
  • Audio amplifiers, which obviously amplify the small signal from audio players to a significantly higher level
  • Speakers, which has various sizes
  • Connectors, which link all products together to make a single audio or sound system


To address the main question of how the JL Audio Marine system overcomes low-frequency noise, we will be discussing their amplifiers and speakers in-depth.


JL Audio Marine Amplifiers Buy Now

As mentioned, the amplifier elevates the electrical signal from the source units. Sound is being converted to electricity, which most technical persons termed as 'signal.' This signal, which comes out from an audio player, will go to a source unit as input. In that line of logic, you can say that noise can possibly enter from the input side.


The difference between JL Audio Marine amps from regular amps is the sheer quality. Since JL Audio has been a pioneer in vehicle audio systems, the decades-worth of experience come into play. The amplifiers are very efficient in which they draw only a small amount of current in every 1 Watt of output power. 


With such efficiency, cooling systems are not stressed out enough, and your boat's energy resources are conserved. Heavy-duty connectors are also attached to connect an amplifier to the speakers. 


JL Audio Marine Speakers Buy Now 

A speaker system comprises mainly 3 types: the "tweeter," which outputs high-frequency sounds; the "sub-woofer" or "woofer," which is responsible for low frequency sounds; and the "mid-range," which handles the frequencies in between. JL Audio Marine speakers are very well-known for the quality of sound that comes out from them.


Since it's designed for marine vessels, the speakers are available either with an enclosure or without. Currently, there are 2 series of speaker systems that have been manufactured: the M3, which is a regular speaker system that can substitute any conventional speaker system; and the M6, which is a speaker system designed for maximum audio experience and perfect for events.


Not only JL Audio Marine subwoofer is the popular product of the company, but there are also other significantly great audio products. For smaller dimensions, there are the JL Audio 6.5 Marine speakers. For larger applications such as those installed in the cockpits, the company also produces JL Audio Marine 7.7 speakers

Overcoming Low-Frequency Noise

Now that we have discussed JL Audio Marine speakers and amplifiers' background let us look at their capability in overcoming undesired low frequency sound. As said previously, noise is any unwanted signal. By that definition, one can derive that the method of eliminating noise is through filtering it from the wanted sound. 


The component responsible for filtering signals is called "filters" or "attenuators." They are integrated into the circuitry of amplifiers. Knowing that JL Audio Marine amp is built for high-quality sound, it is expected that the filters used can do their functions very well. The "equalizer" portion is responsible for adjusting the filtering capacity; hence, you are tuning the amplifier. 


However, the filters have limitations since they only handle the signals from the input side. If there is a presence of noise entering the part of the system beyond the amplifier stage, then the filters cannot help at all. 


As the JL Audio products are being used in a boat where the engine is more powerful than those used in cars, the low-frequency noise generated is almost impossible to avoid. Through the company's expertise, JL Marine speakers overcome this type of noise by way of the subwoofer. With the adding subwoofers, low frequency sounds appear to be cleaner. 

Frequently Asked Questions 

  • How to Install JL Audio Marine Amp?

    Here are the steps in installing a JL Audio Marine Amp:


    1. Disconnect the negative post connection of the battery and put the disconnected cable in safety. 
    2. Connect a power wire (minimum of 8 AWG) from the battery to the amplifier. Consider the dimensions, proper placement, wire polarity, and fuse requirements.
    3. Connect the signal cables (input cable – from the source unit to amplifier; output cable – from the amplifier to the speaker) appropriately while considering the length requirements and proper placements.
    4. Install the fuse before reconnecting the power wire for the negative post connection.
    5. Double-check the connection before reconnecting all power wires.
    6. Once cleared, inspect if it is working by having input audio fed into the system and see the volume levels of the amplifier varying. Observe for the low frequency sound on the subwoofer and the high-frequency sound on the tweeter.
    7. Make necessary adjustments to come up with the right balance of sensitivity. 
  • How to Install JL Audio Marine Speakers?

    Installing JL Audio Marine Speakers can be relatively easy. The connections are fairly understandable such as where the left and right speaker wires are and which output slot belongs to the subwoofer, tweeter, and mid-range. 


    However, the aspect that is important in speaker installation is mounting. You have to strategize where to mount your JL Marine speakers so that you can maximize the sound quality. Once installed, check if there are noises like a hum or a buzz accompanying the low frequency sound.

  • How to Tune JL Audio Marine Amp?

    To tune your JL Audio Marine Amp and eliminate low-frequency noise, you need to check on the following portions: input sensitivity and filter. Its purpose is to match the output voltage from the source unit to the amplifier's input stage for input sensitivity. 


    To attain the perfect match, refer to the "Nine-Step Procedure" in the manual. After the proper adjustments made for input sensitivity, you can tune the amplifier even more by adjusting the filter frequency. An 80 Hz setting can be a good baseline. 

  • Where to Purchase JL Audio Marine Products?

    JL Audio Marine speakers and amplifiers can be purchased from the company's official website. If there are restrictions or complications in reaching their website, you can consider other accredited resellers such as Marine Tech Miami.


    When it comes to the price, you wouldn't need to be worried about purchasing JL Marine speakers or amplifiers. For such high quality, JL Marine Audio products' prices are top-notched compared to most brands. 

Conclusion

JL Marine Audio is, without a doubt, an excellent brand for marine audio systems. It is designed for amplifier circuitry, and its iconic subwoofers are equipped to eliminate low-frequency noise and other electrical noises. The JL Marine speakers can have many sizes too that fits any installation strategies for your marine vessel.

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