The Sirius SUBX2 boombox makes the perfect companion for your Sportster 5, Starmate, or Stratus satellite radio. Enjoy Sirius programming on the beach, at a game, on your patio — wherever you go. A concealed handle lets you transport the SUBX2 with ease, and its clean, uncluttered look lends a touch of style wherever you use it.

The SUBX2 sports a high-performance 3-way speaker system. Separate tweeters and midrange speakers combine with a single subwoofer to provide dynamic full-range sound, while the built-in amplifier delivers strong performance.

While at home or at the office, power up the boombox with the included AC adapter. If you're on the go, you can operate the SUBX2 on eight "D" batteries. Use the detachable windowsill antenna to optimize signal reception. You can listen to other audio devices through the SUBX2's auxiliary input.

Product Highlights:

  • boombox for Sportster 5; Starmate 5, 4, 3; and Stratus 5, 4, and Stratus Dock-and-Play radios
  • dual 2-way speakers with single subwoofer
  • built-in 3-channel amplifier
  • detachable windowsill antenna
  • front-panel headphone jack
  • front-panel auxiliary input
  • volume control
  • AC power adapter
  • accepts 8 "D" batteries for portable use (not included)
  • 19"W x 8"H x 7"D
  • warranty: 90 days
  • Our 60-day money-back guarantee

SIRIUS SUBX2 Boombox Reviews

Average Customer Review:

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Written By Matt W., Bruce Twp., MI on Saturday, February 12, 2011

Crutchfield Customer Review (What's this?)

This boombox is excellent! All types of music sound great on it: rock, country,
jazz, new age, r&b...I am very pleased with it. I had the previous model for the
Sportster Replay and what an upgrade!! I highly recommend this product.


Written By tom d, maryland on Friday, February 04, 2011

Crutchfield Customer Review (What's this?)

good product works well in my office. love portability. good sound


Written By Theresaj, Kershaw, SC on Tuesday, February 01, 2011

Crutchfield Customer Review (What's this?)

I love it. Music is great, sound is fantastic and you can't beat how loud you can turn this
radio up. I mean, really loud. Thanks for the free shipping on this product and getting it
to me so fast Crutchfield. Great Company.

Last Minute Purchase

Written By Pat I, Indianapolis, Indiana on Monday, January 31, 2011

Crutchfield Customer Review (What's this?)

I was purchasing the radio for Christmas and at the last minute, I included the Sirius
SUBX2 BoomBox. This was the best snap decision I have every made. I can now listen
to my satillite radio anywhere and any time. I highly suggest purchasing both the radio
and the boombox at the same time.

Great item!

Written By Greg A, Cleveland, OH on Sunday, January 30, 2011

Crutchfield Customer Review (What's this?)

Great unit - nice sound for a portable. Good crisp highs and full, dark bass.
Have not tried with batteries. Was not the intended use. Enjoy!


Written By Earl63, Pennsylvania on Friday, January 28, 2011

Crutchfield Customer Review (What's this?)

I was amazed the sound produced by this system. I purchased it for my spouse and
she loves it.


Written By MarilynJD, Sterling Heights, MI on Wednesday, January 26, 2011

Crutchfield Customer Review (What's this?)

Sound is great, much improved over our previous boom-box!

Suits ny need

Written By lascko, Elkton,Maryland on Wednesday, November 03, 2010

Crutchfield Customer Review (What's this?)

Sleek design,an improvement over the older version, which I still have.This bad boy replaced my old one. This one sound wise, kiks hind end.Great price and superfast delivery. Thanks Crutchfield.These are getting harder to find anywhere else.Sounds awesome with Sportster 5!!!!


Written By Bruce, Canaan Valley, WV on Thursday, July 02, 2009

Crutchfield Customer Review (What's this?)

The boombox arrived at my door in two days, with regular free shipping. Crutchfield had the lowest price and free shipping.

The bass sound of this equipment is excellent. In my five year old boombox that this model replaced, I used batteries once. The batteries powered it for a few hours, so I looked around and found an old 12 volt cigarette lighter plug that fit the boombox and never purchased batteries again.


Written By James, Bountiful, Utah on Sunday, April 26, 2009

Crutchfield Customer Review (What's this?)

Great product works and sounds really good, I have not tried any batteries in it yet, I do however hear it uses up batteries fairly quick? reason for 4 star, it's a little larger and heavier than we would like, the packaging was an excellent job, so far we love this product, thanks Crutchfield for selling this Sirius product and excellent service, Jim & Sharon

Hands-on research

What's in the box?

Download owner's manual

  • Portable satellite radio boombox
  • AC adapter with attached 6' cord (has in-line noise filter)
  • 3' AC power cord
  • Satellite antenna with attached 19.5' cable (has a single SMB connector)
  • User Guide
  • Limited Warranty

Product Research



Overview: The SUBX2 Portable SIRIUS Satellite Radio Boombox is designed to interface with most SIRIUS dock-and-play radios that have the new Universal Connector. The boombox's built-in handle, built-in speakers, integrated antenna wire management system, and battery powered operation give your plug-and-play receiver portability, allowing you to take the unit virtually anywhere.

Note: For the system to work, you'll need a subscription to SIRIUS Satellite Radio in addition to the SIRIUS tuner.

SIRIUS Satellite Radio: SIRIUS Satellite Radio features more than 120 streams of original programming beamed coast-to-coast, including 65 streams of commercial-free, digital-quality music, and news, talk, sports, entertainment, and children's programming.

Note: Satellite radio service is available only within the continental United States. Service is not available in Alaska and Hawaii.

SIRIUS Radio Compatibility: The SUBX2 Portable SIRIUS Satellite Radio Boombox will support the following SIRIUS dock-and-play radios with the new Universal Connector.

  • Sportster 5
  • Starmate 3
  • Starmate 4
  • Starmate 5
  • Stratus
  • Stratus 4
  • Stratus 5
  • Stratus 6

Note: This unit is not compatible with Sportster 3 or 4 and older model SIRIUS radios.

Antenna: The unit comes with a SIRIUS satellite antenna with a 19.5' cable. The antenna cable has a single SMB connector. You must place the antenna in a location that has a relatively clear view of the SIRIUS satellite paths. For convenience, the antenna can be placed on a horizontal surface using its integrated four rubber feet or mounted vertically to a wall using its four integrated keyhole slots. The antenna has the following dimensions: Width=2.595", Height=1.4375" (3.625" with antenna raised), Depth=3.215".

Note: SIRIUS has three satellites that fly in a figure-8 pattern that crosses the central U.S.. Antenna placement will depend upon where you live in the continental United States.

Antenna Storage: The antenna cradle and cable storage feature located on back of the boombox allows you to take your antenna with you.

Auxiliary Input: This unit uses a front panel 3.5mm mini-jack input to let you connect additional audio components to the boombox.

Headphone Input: The boombox features a front panel 3.5mm headphone jack out so you can listen to your SIRIUS satellite radio stations in privacy.

Dynamic Sound: Full range sound is provided by a 2.1 speaker system with separate tweeters, midrange speakers and powerful subwoofer.

Bass Enhancement: The unit feature bass enhancement technology that improves low end sound giving you better bass response.

Power Options: The boombox can be operated on household AC current when the supplied AC adapter is used. The unit can also operate using 8 "D" batteries (sold separately), allowing you to take it with you wherever you go. The batteries are automatically bypassed whenever the AC adapter is plugged into the unit.


Power Output: 5 watts RMS per channel

THD: 0.2% at 1 watt

Frequency Response: 60 Hz to 20 kHz

Signal-to-Noise Ratio: >70 dB maximum

Headphone Output Impedance: 32 ohms

Headphone Output Level (Variable): 12mW (minimum)

Headphone Connector Type: 3.5mm stereo jack (1/8")

Auxiliary Input Impendence: 3k ohms (nominal)

Auxiliary Input Level: 2.0 volts (maximum)

Auxiliary Input Connector: 3.5mm stereo jack (1/8")

Battery Type/Quantity: "D" Cell / 8 total

AC Adapter: 12 volt, 3A, Center Positive

Weight: 7.3 lbs (without batteries)

Dimensions: Width = 19.125", Height = 7.0", Depth = 9.5625"

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.