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  • C2G / Cables to Go Audio Unlimited 900MHz Wireless Indoor/Outdoor Rock Speaker Bundle (Rechargeable) with Dual Power Transmitter, Granite (SPK-ROCK-DUO2 )
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C2G / Cables to Go Audio Unlimited 900MHz Wireless Indoor/Outdoor Rock Speaker Bundle (Rechargeable) with Dual Power Transmitter, Granite (SPK-ROCK-DUO2 )

by C2G
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List Price: $219.99
Price: $196.03 & FREE Shipping. Details
You Save: $23.96 (11%)
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Ships from and sold by Amazon.com.
Granite 2-Speaker Kit
  • Operating Distance: Up to 150 feet. Speaker Design: 2-way
  • Frequency: 900MHz. Output Power: 15Watts RMS, 100Watts PMPO
  • Frequency Response: 40Hz-12KHz S/N Radio: 65dB
  • Voltage: Transmitter, DC 12V 150mA. Speakers, Built-in Rechargeable Battery or DC 15V 1A adapter.
  • Speakers, Built-in Rechargeable Battery or DC 15V 1A adapter.
  • Place the speaker indoors during. 1) Rain, Hail or Heavy downpours. 2) Snow. 3) Temperatures below 14F, above 122F
3 new from $163.08
This item’s packaging will be visible when delivered and cannot be gift-wrapped.
Special Shipping Information: This product may not be available for 1 or 2 day shipping due to federal regulations that require it to ship via ground ship methods only. This product can only be shipped within the 48 contiguous states.


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This item: C2G / Cables to Go Audio Unlimited 900MHz Wireless Indoor/Outdoor Rock Speaker Bundle (Rechargeable) with Dual Power Transmitter, Granite (SPK-ROCK-DUO2 )
Customer Rating (175) (51) (52) (344)
Price $ 196.03 $ 59.99 $ 115.76 $ 79.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Onlyfactorydirect Amazon.com Amazon.com
Speaker Connectivity Wireless Wired Wired Wireless
Output Wattage 20 watts 250 watts 500 watts 5 watts
Frequency Response Curve 30Hz - 20kHz 80 Hz - 20kHz 50 Hz - 20,000 kHz 40HZ-15KHZ
Impedance 4 8 8 8
Color Gray Granite Grey Granite Grey Information not Provided
Dimensions 15 inches x 12 inches x 28 inches 8 inches x 6.75 inches x 7.5 inches 13.5 inches x 12 inches x 12 inches 9.5 inches x 9.5 inches x 14 inches
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Product Specifications

Size: Granite 2-Speaker Kit
Brand NameC2G
Speaker TypeOutdoor; Wireless
Color NameGray
Item Display Height13 inches
Frequency Response Curve30Hz - 20kHz
Speaker Driver Material TypeMylar
Peak Power Handling - Speakers20 watts
RMS Power Range - Amplifiers20 watts

Technical Details

Size: Granite 2-Speaker Kit
  • Brand Name: C2G
  • Model: SPK-ROCK-DUO2
  • Color Name: Gray
  • Speaker Type: Outdoor; Wireless
  • Speakers Maximum Output Power: 20 Watts
See more technical details

Product Details

Size: Granite 2-Speaker Kit
  • Product Dimensions: 12 x 28 x 15 inches ; 30.5 pounds
  • Shipping Weight: 32.3 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B003FXKXK6
  • Item model number: SPK-ROCK-DUO2
  • Batteries 4 AA batteries required.
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (175 customer reviews)
  • Date first available at Amazon.com: September 14, 2004

Product Description

Size: Granite 2-Speaker Kit

Audio Unlimited's 900MHz Granite Wireless Weather Resistant Rock Speaker System (2 Granite Wireless Rock Speakers and a Dual Power Transmitter) is the perfect system for today's consumer who is looking to add to, or expand, high quality music and home theater sound taking it anywhere outside. With an imitation stone design you can enjoy the freedom of listening to music outdoors in your yard or garden without the hassle of running speaker wire.. The signal works just like high powered wireless 900MHz phones delivering a crystal clear signal through walls or any other obstacles in your yard at distances of up to 150ft truly offering endless installation options. The system transmitter supports all types audio inputs including RCA inputs for home theater receivers, MP3 Players, computers, iPods, and iPhones. Specifications: Product Dimensions: 15 x 12 x 28 inches ; 33 pounds. Operating Distance: Up to 150 feet. Speaker Design: 2-way Frequency: 900MHz. Output Power: 15 Watts RMS. 100 Watts (PMPO). Frequency Response: 40Hz-12KHz S/N. Radio: 65dB. Voltage: Transmitter, DC 12V 150mA. Speakers Built-in Rechargeable Battery or DC 15V 1A adapter. Place the speaker indoors during. 1) Rain, Hail or Heavy downpours. 2) Snow. 3) Temperatures below 14F, above 122F. Fully compatible with all Audio Unlimited products. This item is non returnable.

Customer Reviews

The sound quality is as good as my other speakers.
William Halfond
These speakers are great and are perfect for Trade Shows (that is what I used them for) and will now work perfect for my backyard around the pool.
RachelR577
This year we find that no matter how long we charge the speakers (24-72 hours), one will play for about 30 minutes and then turn itself off.
Larry E

Most Helpful Customer Reviews

71 of 74 people found the following review helpful By Flynbyu on June 13, 2011
Size Name: Granite 2-Speaker Kit Verified Purchase
After reading mixed reviews, and putting much thought and deliberation into it, I purchased the set for my pool area. I'm so glad I did. These are an outstanding alternative to hard wired speakers! The sound quality is remarkably good, with nice bass and treble response. The enclosures are a little larger which attributes to nice bass tones. The dock station comes with an a/c power adapter or you can use it completely wireless by using using 4 AA batteries in the unit. I have used this with my iPhone and it works great. We use the SiriusXM application, Pandora, and the iPod functions and the unit has performed great. I have noticed there is a little interference when using an iPhone when you send or receive text messages while the unit is playing, so this may be the crackling/noise interference some owners are experiencing when using the speakers. This unit also comes with RCA connections so you may plug the dock station into your home theater system/stereo system, PC, cable TV, or satellite dish receiver to use as well. You simply plug the RCA connections into your audio out (red/white plugs) on your home system, cable box, or satellite receiver and use the wireless transmitter's plug to connect to the RCA plug. Of course, to use with a PC, you will not need to use the RCA cord provided, just simply plug the dock station into your PC's headphone jack. We tune into the music channels via DirecTV and the unit had ZERO interference while using this setup. The speakers produce an amazing stereo effect. We have had several guests over to our home and they are literally blown away with these speakers partially hidden in our landscape.

Now for the cons:

It's really not a con....It's an issues others have mentioned, but I have found a fix to it.
Read more ›
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11 of 11 people found the following review helpful By CALIN8V on February 11, 2009
Size Name: Granite Add-On Verified Purchase
I had no issues with the add-on. It was seamless and worked immediately with my other Rock speaker. I have had it a year & still we're still rocking on!
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15 of 17 people found the following review helpful By Michael Vandor on September 29, 2010
Size Name: Granite 2-Speaker Kit
Was quite surprised how easy this was to setup and how good the range was. Walked a speaker all around my 3,000 square foot house and yard and never lost the signal! Pretty good bass, and sound, in part because the rocks, well they're big and heavy speakers. Only negative is because of size they're harder to place so as to blend in with the landscaping. But the portability is great, if you have a larger area you can just move them wherever you plan to be.

Don't know how long the battery charge lasts for, I've only tested them as I just got them today, but rest assured you won't stress out setting them up and tying them into a stereo component or digital music player. You'll be pleased with the rrange, and likely the sound. Don't expect a wired Bose experience, but for wireless, pretty darned good!
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14 of 16 people found the following review helpful By cbeck44 on May 1, 2010
Size Name: Granite Add-On Verified Purchase
*This speaker does not use 6-C batteries as stated*. It has a built-in 12V AH rechargeable battery that needs to be initially charged for 15 hours. It is too new to determine how long it last between charges, but will charge and play when connected to the supplied indoor only AC adapter. The wireless performance initially seems less than the SPK-VELO speakers which I have and also use with it's supplied transmitter. The SPK-ROCK2 is hefty, well built and much darker in color than the pictures. It tends to provide a muddy sound and is much more finicky on location for optimal reception from the wireless transmitter. It does not include any remote volume control like the VELO, so adjustments require local button pushing and because of the type of tone, can vary depending on music. Have not had much of a chance to fully evaluate it's overall capabilities, but does deliver deep sound that can help fill in the tone of other speakers in an outside environment and Amazon's price is very good.
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7 of 8 people found the following review helpful By Z-Dog on October 5, 2011
Size Name: Granite Add-On Verified Purchase
After reading the reviews we hesitantly bought them to try them out. From the very first use we noticed the speakers could not handle any real bass, making the woofer pop constantly when listening to anything like Pop or Funk. We hooked the wireless receiver to everything from Satellite Radio to the TV to IPods, Droids - whatever we wanted in the back yard. Your not going to get Bose sound out of these. Remember, these are wireless, 900mhz speakers. So, every time a neighbors phone rings, it seems to ring in the speaker or block it out. After the first year of use, one of the input jacks for the electric adapter melted in the sun, which is when you find out these speakers are made like a tank. It took us an hour to removed the screws and got off sealant used before we could fix the plug. It eventually broke again. The second speaker, lasted a year longer and started cutting out. It would play for a few minutes, and then turn off. It sounds like another issue with the power, but we've given up.

The Pros - Easy to use - Just turn it on and it finds the signal. They have about a 100 foot range and once connected, stay connected to the source. The battery lasts about 7 hours or so of continuous play. They blend well into the landscape. Two of these will fill a 1/2 acre yard with decent sound and are great for parties.

The Cons - Not good bass response. They cut out with a cordless phone and sometimes require a manual switching of the channel. Speakers seem to die (as many have said) after a few years.

You get what you pay for. We are looking for the next set of speakers for our yard and may go with in the ground Bose speakers, hard wired.
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