Crescendo X

Luxury Wireless Speaker

Crescendo X is a luxury wireless speaker featuring Bluetooth®, AirPlay, and whole-home wireless streaming with DTS® Play-Fi® + "Works with Alexa" certification. Under the grill, the Crescendo X includes dual audiophile quality Folded Motion™ tweeters and a 5x7-inch mid/bass woofer for a deep, extended bass response. The Crescendo X is capable of reproducing sound with unflinching accuracy, resolution, and detail—the inspiration behind every MartinLogan design.

$999.95 each
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Our dedicated in-house design and engineering team created the ultimate table-top speaker system in a sleek, compact design without compromising sound quality. Taking a "no-compromise" approach, the Crescendo features premium construction and design elements not typically found in similar speakers.

Inspiring Design

MartinLogan has always blended Science with Art, and the Crescendo X is no exception. Designed to fit a modern decor, MartinLogan utilizes high-quality materials and finishes to give Crescendo X a furniture and artwork like appearance. The result is striking.


The dense cabinet enclosure, wrapped in either high-gloss piano black paint or real-wood walnut veneer, floats atop a sturdy aluminum stand and looks comfortably at home in any decor where aesthetics are as important as sound quality. A cleanly integrated, front mounted control panel allows quick access to power, input and volume controls.

For across the room control, Crescendo X includes a custom remote control built from black anodized extruded aluminum.

Unmatched Performance

At the core of the Crescendo X is an advanced 24-bit 48kHz DSP (digital signal processing) based preamplifier in conjunction with a powerful class-D closed-loop 100-watt (140-watt peak) amplifier. Crescendo X's amplifier creates powerfully detailed sound from a custom designed front-firing 5x7-inch matte black polypropylene cone woofer with extended throw drive assembly in a non-resonant asymmetrical chamber format. Low frequencies are seamlessly blended with two of MartinLogan's high-performance Folded Motion™ tweeters for an astonishing, room filling experience.


Folded Motion® Tweeters

The signature Folded Motion tweeters utilize extremely low mass diaphragms that "squeeze" air, and require significantly less excursion than the typical 1-inch dome tweeter, which drastically minimizes distortion while providing a lightning fast response time. The increased surface area also provides a wide, yet controlled sound dispersion to create a realistic and carefully etched sound stage.


Crescendo X is crafted with a solid MDF enclosure that strengthens and intensifies low-frequency bass performance while minimizing vibrations. To further enhance bass performance, Crescendo X features an optional subwoofer output via an analog RCA connection. This option, not typical of tabletop speaker systems, customizes the crossover between the Crescendo X and subwoofer to give true audiophiles the ability to supplement the low-frequency performance of their system.


Whole-House Music Streaming

DTS Play-Fi technology give you the freedom and flexibility to stream high-resolution music (up to 24- bit/192kHz) wirelessly over an existing Wi-Fi network. Unlike many other wireless platforms, DTS Play-Fi is an open platform, allowing you to mix and match any DTS Play-Fi-enabled audio products from other top audio brands into your ecosystem. Take advantage of endless choices, from your own music library to online music streaming services*, and stream music from virtually any device – Android, iOS, Kindle Fire or PC.

* Some of the music services listed below may not be available in your region. All logos are property of their respective owner(s).

Works with Alexa

MartinLogan DTS Play-Fi products now have “Works with Alexa” certification, meaning they can be controlled using voice commands given to an Amazon Echo, Echo Dot, Echo Show, Fire TV Cube, or other Alexa voice command-enabled device. Alexa functionality is activated by using the Alexa app to enable the DTS Play-Fi skill. This links your Alexa account to "Works with Alexa" DTS Play-Fi compatible products like this one.

After installing the skill, Alexa will know your speaker by name and allow you to control volume and playback functions such as track skip, mute, pause, and stop or request a song to play in a specific room or group of rooms linked together. Once an Alexa voice command is used to start audio playback, the DTS Play-Fi app can be used to dynamically add more products to the streaming session. Additionally, Alexa's Routines feature can be used to create events that initiate audio playback on your DTS Play-Fi speaker, such as setting up your speaker to work as an alarm clock by starting your favorite song.

Learn how to enable Amazon Alexa control here »

Advanced Connectivity

Seven input methods allow for connection of virtually any device:

  1. DTS Play-Fi – via the DTS-Play Fi app, stream audio from capable devices over a Wi-Fi network (iOS, Android, PC or Kindle Fire)
  2. AirPlay – connect AirPlay capable devices wirelessly (iPhone, iPad, iPod, or a computer with iTunes) to stream audio.
  3. Bluetooth – connect Bluetooth capable devices wirelessly to stream audio. Bluetooth V4.0 supports SBC, MP3, AAC, and apt-X®.
  4. Wired Ethernet – audio information can be sent over a LAN to the Crescendo using various protocols (such as AirPlay or DLNA)
  5. USB – connect compatible Apple devices and use the Crescendo as an audio dock and charger. The USB connection was designed to rapidly charge a variety of devices.
  6. Analog – any device that has an analog audio output can connect to the auxiliary analog input via a 3.5mm headphone style jack.
  7. Optical digital – any device that has a digital optical output can connect to the auxiliary digital input with the included mini-Toslink optical adapter (analog and digital connections share the same input).


MartinLogan Crescendo X Networked Speaker Review

"There are a lot of choices out there if you want to get a network capable speaker that will allow you to access your music library in another part of your house. The MartinLogan Crescendo X is a legitimately great sounding networked speaker that is easy to use and also stands apart from the crowd because of its stylish design."

—Carlo Lo Raso, Secrets of Home Theater and High Fidelity
Read the full review»


Specifications are subject to change without notice

Frequency Response

50–23,000 Hz ±3dB

Crossover Frequency

3,600 Hz

High Frequency Transducer

Two 0.94” x 1” (2.4cm x 2.5cm) Folded Motion Transducers with 2.8” x 1.25” (7.1cm x 3.2cm) diaphragm.

Low Frequency Transducer

5” x 7” (12.7cm x 17.8cm) fiber cone with extended throw drive assembly. Non-resonant asymmetrical chamber format.




1 x 50 Watts (woofer). 2 x 25 Watts (tweeters) 100 Watts (140 Watts peak) combined total output.


24-bit 48kHz DSP based preamplifier Class-D amplifier

Audio Controls

Front mounted controls and included remote control.

Wireless Band

2.4 GHz and 5.0 GHz; 802.11 g/n

Wireless Inputs

Apple AirPlay, DTS Play-Fi + "Works with Alexa" certification, Bluetooth


Wi-Fi, Bluetooth v4.0 (supports AAC, aptX®, MP3, SBC), Auxiliary analog/optical digital (3.5mm mini jack), RJ45 Ethernet

Power Draw

Max: 70 Watts, Idle: 6.5 Watts, Standby consumption: <0.5 Watts, Network standby consumption: < 6 Watts


15 lbs. (6.8 kg)


8.1" x 25.7" x 6.9 "
(20.53cm x 65.3cm x 17.5cm)

Firmware Updates Crescendo X


  1. Download the latest firmware file above.
  2. Make sure you Crescendo is connected to your router (wireless or Ethernet connection).
  3. To open Crescendo's webpage find the speaker's IP address and enter it in a web browser (we recommend Internet Explorer for this process). Please note, due to the complex nature of computer systems, operating systems, and router/network configurations it is impossible to document every scenario. For this reason we recommend the DIRECT ETHERNET CONNECTION below. The following three options are general information to help find your Crescendo on your network.

    If you are having trouble finding the IP address for Crescendo when connecting through a router, we recommend connecting your computer directly to Crescendo by following these steps:

    1. Turning off your computer's Wi-Fi.
    2. Attach Crescendo directly to the computer using an Ethernet cable.
    3. Turn Crescendo off and on using the Power button on the back of the speaker.
    4. It may take additional time for your computer to establish an Ethernet connection with Crescendo. Once established, the Setup and Status LED on back of Crescendo will turn solid green.
    5. Open a browser and enter "" as the URL. Please note, this URL only works via a direct Ethernet connection between a computer and Crescendo. This URL is subject to change. If you are unable to access Crescendo's webpage from this URL, keep the Ethernet connection intact and try the methods outlined under "Windows" and "Macintosh" above to determine the Crescendo's IP address.

    (Exact process may vary depending on version of Windows---see Windows documentation): Using your start menu, choose "Network" or "My Computer > Network". Look for the Crescendo in the list of connected network "Media Devices". Right click the Crescendo and select "View device webpage".


    To get a list of connected devices to your network from your Apple computer, you must log onto your router and view the connected devices. Please refer to your router's setup instructions on how to log in and view connected devices.

  4. Crescendo's internal web-page should now be loaded in a web browser.
  5. Press "Firmware Update" on the left of the webpage.
  6. Press "Ok" button on the right side of the webpage. Crescendo will take 30 seconds to prepare for firmware update mode---the Wi-Fi Setup and Status LED on back of Crescendo will begin blinking red/red/green/green. Please make note of the current IP address listed in the web browser---if the web page does not automatically refresh you may need to re-enter the URL in your browser to continue.
  7. Click "Choose File" button and select the new firmware file (.fw extension) previously saved to your computer.
  8. Click "Upload" button to start updating.
  9. When the firmware is updating, please don't break the network connection or the power. Crescendo will take a moment to upload the firmware file. Once uploaded click "Ok" to begin update.
  10. During firmware installation the Crescendo's front light will turn off (this may take several minutes) and the Setup and Status LED on back of Crescendo will continue to blink red/red/green/green.
  11. When firmware update is complete, the Crescendo will reconnect to your wireless network, the front LED will turn purple, and the Setup and Status LED on back of Crescendo will turn green. If you used a temporary direct Ethernet connection to perform the firmware update you will need to disconnect the Ethernet cable and turn the Crescendo off and on before the speaker will reconnect to your wireless network.

Customer Reviews For Crescendo X

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