Portable audio system for select SIRIUS Dock and Play radios

  • SIRIUS SUBX2 Boombox


  • SIRIUS SUBX2 Boombox

Crutchfield OMC logo
We don't check this item for fit or compatibility.
Item #: 607SUBX2

Review Summary

This item is no longer available to purchase.
Contact us for other options
Call   Email  
We recommend this similar item, or shop all Boomboxes and Compact Systems

Our take on the SIRIUS SUBX2 Boombox

by Zak Billmeier

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.

See more info on this item


  • 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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product 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

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 open the box, verify contents, 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.



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"

Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

SIRIUS SUBX2 Boombox Reviews

Average Customer Review:

10 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5


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.
Was this review helpful?    Yes | No
5 out of 5


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
Was this review helpful?    Yes | No
5 out of 5


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.
Was this review helpful?    Yes | No
5 out of 5

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.
Was this review helpful?    Yes | No
5 out of 5

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!

Was this review helpful?    Yes | No
5 out of 5


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.
Was this review helpful?    Yes | No
5 out of 5


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!
Was this review helpful?    Yes | No
5 out of 5

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!!!!
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
5 out of 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.
19 out of 22 people found this helpful
Was this review helpful?    Yes | No
4 out of 5


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
31 out of 33 people found this helpful
Was this review helpful?    Yes | No

For a more in-depth review and enhanced detailed information on the SIRIUS SUBX2 Boombox, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_607SUBX2/SIRIUS-SUBX2-Boombox.html ).