Nulaxy KM18 Review!

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What Is The Nulaxy KM18

The Nulaxy KM18 FM Transmitter, is a budget friendly in car FM transmitter and Bluetooth adapter that allows you to stream music and make hands free calls through your car’s audio system.

The basic premise is that the Nulaxy KM18 is designed to plug into a car’s cigarette lighter, making it suitable for older vehicles without Bluetooth capabilities. It has a digital dsplay, and some pretty intuitive controls compared to it’s rivals, which is why we recommend the KM18 over the competition, as they’re well known at this point for balancing cost and functionality.

Nulaxy KM18

This is an image of the Nulaxy KM18​

Nulaxy KM18 FM Bluetooth Transmitter

Nulaxy KM18 Price

$18 – $25

Nulaxy KM18: Full Specifications

  • Model Number: KM18

  • Bluetooth Version: Bluetooth 5.0

  • FM Frequency Range: 87.5 – 108.0 MHz

  • Bluetooth Protocol: A2DP, AVRCP, HFP, HSP

  • USB Charging Port(s): 1 USB (5V/2.4A)

  • Micro SD Card Slot: Yes, supports up to 32GB

  • Supported Audio Formats: MP3, WMA, WAV, FLAC

  • Input Voltage: 12-24V DC

  • Screen: 1.44 inch LCD display

  • Material: ABS

  • Dimensions: 3.1 x 2.0 x 1.3 inches

  • Weight: 2.4 ounces

Table of Contents

How Well Does The Nulaxy KM18 Work?

The Nulaxy KM18 offers an array of features that make it appealing to a wide range of people.

Let’s take a closer look at the primary functionalities that set it apart.

Bluetooth 5.0 Connectivity

The Nulaxy KM18 uses Bluetooth 5.0. This means you’ll get a better connection, faster data transfer rates, and improved range compared to previous versions like Bluetooth 4.2, or 3.0.

With Bluetooth 5.0, this also means you’ll get a more stable connection, reduced latency, and better compatibility with newer smartphones, making it a solid choice for both audio streaming and hands free calling.

1.44 Inch LCD Display

One of the KM18’s standout features is its 1.44-inch LCD screen. The display shows essential information such as the current FM frequency, battery voltage, and caller ID.

The screen is bright and easy to read, even in daylight, making it convenient for monitoring settings while driving.

USB Charging Port

The KM18 includes a 5V/2.1A USB charging port, enabling people to charge their devices while using the transmitter.

This feature is particularly useful for people who rely heavily on their smartphones for navigation or music streaming.

Flexible Gooseneck Design

The flexible gooseneck on the KM18 allows you to adjust the position of the device to your preference, enhancing ease of use and accessibility while driving. 

The flexibility of the gooseneck also means it can fit in various car models without obstructing other dashboard controls.

KM18 EQ Options

The KM18 includes an equalizer that allows you to adjust the sound frequency according to your preferences. 

Although not as advanced as a full EQ found on high end car audio systems, these basic options provide some degree of customization for a more enjoyable listening experience depending on they type of music you listen to.

Nulaxy KM18 Performance and Sound Quality

Let’s get this off our chest right from the start. FM transmitters inherently face challenges with sound quality, largely due to signal interference, limited bandwidth, and FM transmission restrictions, which can make it hard to achieve the clarity and depth of audio provided by Bluetooth or direct AUX connections. However, in spite of that, the Nulaxy KM18 stands out among FM transmitters, delivering pretty solid performance within these technical limitations.

The KM18 helps to mitigate any performance issues with manual frequency selection. This means you can choose a frequency that isn’t in heavy use within the local area so you can minimize interference and try to achieve a cleaner and clearer sound. This feature is especially useful for drivers in rural or less densely populated areas where the FM spectrum is less crowded. However, In more urban or congested radio areas the KM18 may encounter slight static or distortion due to overlapping signals. Nevertheless, its overall sound quality remains quite satisfactory for general listening purposes.

In terms of audio range, the KM18 delivers a well balanced profile with bass, midrange, and treble levels that are pleasant for casual listening. The bass has a moderate punch, and the treble is crisp enough to avoid sounding tinny, though audiophiles who favor a more robust or customizable listening experience may notice some limitations. 

Unlike high end audio systems, the Nulaxy KM18 lacks advanced EQ settings, which could provide more control over audio tones. As a result, the sound can sometimes feel flat or lacking in depth, especially for people who enjoy rich bass or intricate highs. However, for most of you, seeking a convenient and budget-friendly way to play audio through their car speakers, the KM18’s sound quality is generally considered very good.

Nulaxy KM18 Installation and Use

Setup Process

Setting up the Nulaxy KM18 is pretty simple and straightforward. You’ll plug the unit into the car’s cigarette lighter, set the FM radio to an unused station, and tune the KM18 to the same frequency. 

Pairing a smartphone with the KM18 via Bluetooth is also pretty quick, usually requiring only a couple of steps. Turn on bluetooth on your phone, and find the Nulaxy to pair. Hey presto, all done.

User Interface

The interface of the KM18 is intuitive, with a large button layout that makes it easy to control while driving. The adjustable gooseneck design further improves accessibility, ensuring that drivers can view the screen without straining. 

Controls for adjusting volume, answering calls, and changing tracks are conveniently placed, which minimizes distractions.

Nulaxy KM18 Hands Free Calling

The Nulaxy KM18 also provides hands free calling via Bluetooth 5.0, allowing you to answer, reject, or end calls with a single button on the device, this means that your connection will be more stable with less latency; and it’ll generally provide a more consistent audio experience compared to other Bluetooth versions, such as 4.2, and 3.0.

The built-in microphone also includes “noise suppression technology”, which should reduce background noise to improve call clarity. In quieter environments, call quality is generally clear, though road noise or driving with the windows down can still impact voice clarity depending on if you’re speaking with a professional public speaker, or your 80 year old granny. In this respect, the KM18 meets the needs of those who make occasional calls on the road, although it won’t reach the clarity of a dedicated, built in car Bluetooth system.

Nulaxy KM18 Compatibility and Connectivity

The KM18 is compatible with a wide range of devices, including most Android and iOS smartphones. It supports multiple audio sources, such as Bluetooth 5.0, (as mentioned above), USB drives, microSD cards, and auxiliary inputs, making it adaptable for people with different audio preferences.

To set it up, plug the device into your car’s cigarette lighter, match the KM18 and car radio to the same FM frequency, and connect via Bluetooth. 

Just note, that those of you in areas with high radio traffic may need to adjust frequencies to maintain a clear connection, as we mentioned above.

Nulaxy KM18 Pros and Cons

Pros

  • Affordable Price: Offers multiple features at a low price point.
  • Simple Setup: Straightforward design and easy-to-navigate buttons, with a large LCD display for easy tuning.
  • Versatile Audio Sources: Supports Bluetooth, USB, microSD, and AUX, catering to various audio needs.
  • Dual USB Ports: Allows for charging two devices at once, with one port optimized for faster charging.
  • Compact Design: Fits well within most car interiors without blocking dashboard controls.

Cons

  • FM Transmission Constraints: FM transmission can be affected by interference, particularly in areas with many active frequencies.
  • Basic Audio Customization: Lacks advanced equalizer options, which may limit sound customization for some people.
  • Microphone Quality: Noise suppression is functional but may be impacted by louder driving conditions, affecting call clarity.
  • Frequency Interference: People in densely populated areas may need to adjust the frequency periodically due to signal interference.

Nulaxy KM18 Reviews and Feedback

  • The KM18 generally receives positive feedback from users, especially for its affordability, ease of use, and sound quality relative to other FM transmitters.
  • Many users appreciate the ability to charge multiple devices simultaneously and enjoy the large, easy-to-read display.
  • The sound quality does meet the needs of most casual listeners, some users note occasional static or interference issues, especially in urban areas.
  • For hands-free calling, reviews are mixed; users find the feature convenient, but a few report that the microphone can pick up ambient noise, making it harder for the caller on the other end to hear clearly.

Is the Nulaxy KM18 FM Transmitter Worth It?

The Nulaxy KM18 FM transmitter is suitable for drivers looking for an affordable way to add Bluetooth streaming, hands free calling, and multiple audio source options to their car’s existing audio system. It’s a no brainer.

It meets the needs of those who require basic functionality without advanced audio or call quality expectations. Its simplicity, Bluetooth 5.0 connectivity, and versatile input options make it a good choice for everyday commuters or casual listeners.

Those of you in areas with crowded FM bands or those who need premium sound quality may need to retune frequently or consider other solutions, such as direct AUX inputs or dedicated Bluetooth adapters. For drivers who prioritize practicality and are comfortable with the occasional retuning, the KM18 offers a balanced mix of features and affordability.

Nulaxy Customer Support

Final Verdict: Is The Nulaxy KM18 It Worth Buying?

Yes!

The Nulaxy KM18 is a great investment for anyone looking to add Bluetooth functionality, hands free calling, and wireless music streaming to their car without spending hundreds on a new audio system.

With its strong connectivity, crisp sound quality, multiple playback options, and dual USB charging, the Nulaxy KM18 provides excellent value for money. While minor FM interference may occur in some areas, the overall performance and convenience far outweigh any drawbacks.

So, If you want an affordable, reliable, and feature-packed FM transmitter, the Nulaxy KM18 is one of the best choices available. What are you waiting for?

This is a picture of Dale Ogden

Article By: Dale Ogden

Dale is a highly respected automotive industry expert, renowned for his pioneering work in vehicle forecasting and asset management. As the founder of Check Your Spec and former Forecast Manager at CAP HPI (the UK equivalent of Kelley Blue Book), he spearheaded the development of forecasting strategies and depreciation models for internal combustion, hybrid, and electric commercial vehicles. With over two decades of experience, Dale pioneered EV forecasting models now used by major manufacturers, and has generated residual values for over 10,000 new vehicles.

Nulaxy KM18 FAQ

How do I set up my Nulaxy KM18?

  • Setting up your Nulaxy KM18 is relatively simple. Follow these steps:

    • Step 1: Plug the Nulaxy KM18 into your car’s cigarette lighter or 12V power socket.
    • Step 2: Turn on your car’s radio and set it to an unused FM frequency (typically between 87.5 and 108.0 MHz). Make sure it’s not a station actively broadcasting.
    • Step 3: Power on the Nulaxy transmitter by pressing the power button. It will automatically display an FM frequency on its screen.
    • Step 4: Match the FM frequency displayed on the transmitter with the one you selected on your car radio.
    • Step 5: Pair your phone with the Nulaxy KM18 using Bluetooth. Once paired, you can play music or take calls through your car’s speakers.

How do I change the frequency on my Nulaxy KM18?

To change the frequency on the Nulaxy KM18:

  • Press the “CH” button on the device. This allows you to manually adjust the frequency.
  • Use the “Next” and “Previous” buttons to change the FM frequency in small increments (usually in 0.1 MHz steps).
  • After selecting a clear, unused frequency, adjust your car’s radio to the same frequency to match.

What radio station do I use for my Nulaxy KM18?

The ideal radio station for your FM transmitter is one that is not in use in your area. This means it won’t interfere with other stations or cause static. Typically, frequencies between 87.5 MHz and 108.0 MHz are used for FM transmission. Try picking a frequency where you don’t hear any local radio stations broadcasting. If there is interference, change the station by following the steps to adjust the frequency on the Nulaxy KM18.

Is Nulaxy a good brand?

Nulaxy is considered a reliable brand for affordable and user friendly Bluetooth FM transmitters, especially for drivers who want an easy way to add Bluetooth functionality to their car’s audio system without major installation. Their products are widely used for hands-free calling, music streaming, and charging devices in the car. 

While they provide a good mix of features for the price, some users may find that audio quality can suffer in areas with heavy radio signal interference. Overall, Nulaxy is a good option for people seeking a budget-friendly solution for FM transmission.

How to reset Nulaxy KM18?

To reset your Nulaxy Bluetooth FM transmitter:

  • Unplug the device from your car’s power socket.
  • Wait for about 30 seconds to a minute.
  • Plug the device back in and it will reset to its default settings.
  • If the transmitter has a reset button (which may not always be the case), hold it down for 10-15 seconds to reset the device.
  • After resetting, you may need to re-pair it with your Bluetooth device and select a frequency again.

How Do I connect The Nulaxy KM18?

  • To connect your Nulaxy wireless FM transmitter:

    • Plug the transmitter into your car’s cigarette lighter port.
    • Turn on your car radio and set it to an unused FM frequency.
    • Power on the Nulaxy KM18 and it will display a default FM frequency.
    • Pair your phone with the transmitter via Bluetooth by searching for the device in your phone’s Bluetooth settings and connecting.
    • Once connected, you can play music or make calls through your car’s speakers.

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