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SKU: KIT-RX640-PAR 150W High Performance 6.5" Rock Speaker Pair, Sandstone Canyon Brown or Granite Grey - RX640

Purchase 150W High Performance 6.5" Rock Speaker Pair, Sandstone Canyon Brown or Granite Grey - RX640
  • SKU: KIT-RX640-PAR rshide6paros

    150W High Performance 6.5" Rock Speaker Pair, Sandstone Canyon Brown or Granite Grey - RX640

  • $109.99

    Compare at: $169.99 You Save $60.00

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Sold as pair, the RX640 is a very popular landscape rock speaker for backyards, pools and gardens. Part of the fun is disguising the speakers so choose a color that best matches your landscape and place the speakers where a natural rock would be found. Typical locations for the rock speakers include rock formations for barriers around pools, ponds and spas or bordering a garden and even as an accent in flower gardens.

You'll Enjoy Great Sound
Customers are always pleasantly surprised by the sound quality of our RX640s. The 6.5" polypropylene woofer and 1" dome tweeter are acoustically matched to give you clear vibrant sound with good bass characteristics. If you're worried about how long they will last, rest assured that this two-way (woofer and tweeter) rock speaker system utilizes weather-resistant components for years of trouble-free performance.

  • Hide in plain sight - friends wont know where the sound is comping from
  • All-weather components withstand rain, high temperatures, and other harsh weather conditions
  • Acoustically inert enclosure made from aerospace grade multi-layer composite cabinetry
  • Designed specifically for outdoor environments with excellent sound quality
  • Available in different colors to match your environment
Do I need special cable to run outdoor speakers?
We strongly recommend our direct burial, CL3/FT4 waterproof cable and wire connectors that are designed for the outdoors. Our speaker wire uses a specially formulated UV-resistant, white polyethylene jacket that provides protection against water damage and allows the cables to withstand extreme weather conditions like rain, snow and high temperatures and incorporate twice the insulation of average cable. If you plan to bury the cable, OSD recommends you bury it 4-6" underground so that it's not visible nor pose a danger of somebody tripping over it. Our speaker cable is ideal to use in direct burial applications. As for the gauge, for runs up to 100 feet for background music, 16-gauge will be fine. If the run is approaching or exceeding 100 feet, we suggest 14-gauge wire. 

Add Volume Controls
Volume controls can be a great addition to a system providing both proper impedance matching and more hands-on local control of the volume in the listening area. We offer a great selection of outdoor volume controls to choose from!

Extremely Durable
OSD outdoor speakers are developed with harsh conditions of the outdoors in mind. Our rock speakers use only non-water-absorbing materials and won't absorb any water. This is critical in winter so it won't freeze and crack. The shape is designed to withstand large amounts of pressure, extreme temperatures and moisture. Remember though, outdoor speakers are an investment, so take care of them. Storing them away from extreme weather conditions will only lengthen the time you will get enjoying outdoor speakers. These rock speakers utilize weather-resistant components for years of trouble free performance.

Warning: California's Proposition 65


This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

  • Speaker Type: 6.5" 2-Way Weather Resistant Rock Speakers
  • Woofer: 6.5" Polypropylene Cone with Sealed Voice Coil
  • Tweeter: 1" Coaxial Polyamide
  • Frequency Response: 39Hz - 22kHz
  • Power handling: 150W
  • Sensitivity: 91 dB
  • Impedance: 8 Ohms
  • Weather Resistant: All-Weather Versatility
  • Aerospace Grade, Multi-layer Composite Cabinetry
  • Unit Dimensions: (L x H x D) 14" x 12" x 12"
  • Sold As: Pair
  • Wireless: No
  • Colors Available: Sandstone Canyon Brown, Granite Grey
  • Weight: 26 lbs
  • Warranty: 1 Year
25 Questions asked on 150W High Performance 6.5" Rock Speaker Pair, Sandstone Canyon Brown or Granite Grey - RX640

Mike • 12/17/2019, 2:17:43 PM Q Dear OSD, , I have a 10-yr old Sony Receiver -- it is 5.1 channels (surround). The A/B switch only allows for 2 connections for each. If I wanted to buy 4 speakers could I use the 5.1 connections so that they all play the same source? Please advise. Many thanks, Mike
Customer Service • 12/17/2019, 2:17:43 PM
A Hi Mike, Are you saying that you aren't utilizing the 5.1 for surround sound and are wondering if you can run a pair of speakers off one of the surround outputs? If so, you can do that, but it would probably be limited to surround mode, meaning you would not be hearing stereo out of those speakers, unless your AV receiver can switch to stereo mode. -BM 2526
Cliff • 12/17/2019, 2:17:43 PM Q I've had these speakers for 2 summer seasons. I bring them in during the Midwest winters. At the end of last summer I noticed that both of my speakers had cracks all around the outside of the speaker grill. Has this happened to anyone else and what can I do to weatherproof these? I've thought about smearing silicon over the cracks. Anyone else with this problem? thx, Cliff
Customer Service • 12/17/2019, 2:17:43 PM
A Hi Cliff, Do you have the speakers placed in direct sunlight or are they in primarily shaded area? Do you happen to have any chemicals in your yard? If they are surface cracks and not just paint cracks, then silicone would definitely protect any moisture from seeping in. Let me know. Thanks. -BM 2540
Steve • 12/17/2019, 2:17:43 PM Q I have a pair of what I think are RX640 Rock speakers in gray. Had them for several years and they sound great. Looks like I might need to replace them because One had water in it at the end of last season. I see they're only listed in brown. Did you discontinue gray?
Customer Service • 12/17/2019, 2:17:43 PM
A Hi Steve, We have decided to discontinue this speaker, we only have it in brown left. You can try draining the water out of your current speaker and letting it dry. There have been a few people that tried this and now the speaker works just fine. CS 2577
robertgood • 12/17/2019, 2:17:43 PM Q How many watts can the RX640 handle?
Customer Service • 12/17/2019, 2:17:43 PM
A Hi Robert, The RX640 can handle a max of 150 watts peak, so you should give it around 60-100 watts for optimal sound. -BM 2593
jan • 12/17/2019, 2:17:43 PM Q Do you have to run a separate wire from the source to each of the speakers or can you run the wire to the first speaker and then a wire from the first speaker to the second speaker?
Customer Service • 12/17/2019, 2:17:43 PM
A Hi Jan, It's best to run a separate wire from each channel on the receiver, otherwise you will not get stereo sound. Also, if you try daisy chaining one speaker off the other, that will drop the load down and may not be stable for the amp/receiver to handle. BM 2740