Mobile Navigation
My Account


Call for Help
Home / Product Category / SPEAKERS / Subwoofers / Outdoor Subwoofers / OSD Audio RSUB300 10" Dual Woofer Outdoor Rock Subwoofer with 500W of Power and Aerospace-grade All Weather Enclosure

OSD Audio RSUB300 10" Dual Woofer Outdoor Rock Subwoofer with 500W of Power and Aerospace-grade All Weather Enclosure

Product code: RSUB300

In Stock
Free Shipping
OSD Price: $299.95
Compare at: $499.95 You Save: $200.00 (40%)
Sold in single 1 = 1 pc
30-Day Money Back Guarantee

Features & Specifications


• Heavy-duty weather-resistant outdoor subwoofer puts bass in the backyard, porch, patio or poolside to complete your outdoor surround sound system
• Rated at an 500W, includes a 10-inch reflective woofer and an 8-inch subwoofer to crank up powerful low frequency sound effects for backyard sound systems
• Rock-shaped outdoor subwoofer blends easily in the backyard landscape and is built tough to withstand rain, snow and high temperatures due to the specially coated aerospace-grade multi-layer composite cabinetry
• Turn your backyard into party central with the best outdoor subwoofer for the price that not only looks incredibly real but does not need to be buried like traditional outdoor subs
• Enjoy outdoor movies during warm summer months with true surround sound with this all-weather subwoofer that can be purchased in canyon brown or granite grey to match your backyard landscape

OSD Audio’s RSUB300 is a non-powered outdoor subwoofer that delivers gut-wrenching bass with a whopping 500W of power. This backyard subwoofer may shake a few plants and perhaps some neighbors too but it promises to deliver the kind of bass you’ve been looking for to fill the backyard, patio or pool area with detailed, crisp and heart-pounding low notes. Although it may appear to look like a simple and attractive rock found in any backyard or garden, inside the RSUB300 hides a robust 10” reflective woofer and an 8-inch subwoofer for incredibly realistic bass notes to round out a 2.1 or 5.1 or higher outdoor surround sound system. Designed specifically to provide the best sound in open air environments, the RSUB300 includes a rigid and acoustically inert enclosure with aerospace-grade multi-layer composite cabinetry that protects the outdoor subwoofer from the elements such as rain, snow and high temperatures.

What Are the Benefits of Adding an Outdoor Subwoofer?
Adding a subwoofer to a backyard sound system makes a lot of sense and here’s why. If you have outdoor speakers in your patio or backyard, you’re hearing mid and high frequencies and some bass. But outdoor speakers are not designed to handle only low frequencies; that’s a subwoofer’s job. What many people don’t realize, however, is that when you add an outdoor subwoofer, it takes the low-frequency burden off the other speakers. By adding a subwoofer, you’ll not only hear awesome bass, it will optimize your surround systems because those speakers can focus on the sound frequencies for they were designed.

Protecting Your Outdoor Subwoofer

The OSDRSUB300 is built to last with a rigid and acoustically inert enclosure with aerospace grade material that protects the 10" reflective woofer and 8" woofer; however, we recommend you place the outdoor subwoofer in a shaded area when possible and avoid contact with pool chemicals. In areas with very severe weather, it’s not a bad idea to cover them with a plastic bag so when spring comes and you spark up the barbeque, the music will be ready when you are.


  • Acoustically Inert Enclosure, Aerospace Grade Multi-layer Composite
  • 10" reflective woofer + 8" woofer
  • 10" Injection molded cone woofer with Dupont® surround
  • Power handling: 500W
  • Frequency Response 20Hz - 150Hz ±6dB
  • Sensitivity 90db
  • 3ft speaker cable included
  • Finishes: Canyon Brown, Granite Grey
  • Unit Dimension: H 12" x W 25" x D 20"
  • Unit Weight: 30 lbs.
  • Wireless: No
  • Powered: No
  • Sold in single
  • 1 year warranty

Other Product Info

This is one of the best outdoor rock subwoofers ever produced. The RSUB300 includes a 10" reflective woofer and a 8" subwoofer, all in one realistic looking rock, giving you Earth shattering bass.



  View Owner's Manual          


By Gina from Bay Area, CA on October 6, 2011
These speakers have a 10" reflective woofer + 8" woofer. It comes with 2 speaker wires and I've connected them both but only the 8" woofer is working.
By Customer Service - Q&A on October 7, 2011

The 10" woofer is a reflective woofer. The 8" woofer is the one that receives power. The purpose of the reflective woofer is to create resonance & improve bass response.

By Robert Melvin from Richmond, VA on March 8, 2012
How is the Subwoofer connected - connected from the receiver - Does this have speaker line level in and out for the Highs to go to the additonal satellite speakers or just speaker wire connections + / or left and right inputs?
What is the recommended average RMS power form the amp
Does this hae a speacker volume control to icreae the bass?
By Customer Service - Q&A on March 9, 2012

Hi Robert,
Unlike the OMSUB200, this does not have a built-in crossover that would enable you to do the sub-sat systems you describe. The ideal RMS for this Rsub300 is 250 watts. The volume would be controlled on the sub amp used to power it or the receiver the sub amp is connected to.
By Customer Service - Q&A on March 11, 2012

Hi Robert:

As CL mentioned the OMSUB200 might be a better choice for your application. It is an outdoor speaker but not in the shape of a rock. It does feature a Speaker Level output so you can connect a stereo pair from the Sub. The SUB200 has an external crossover that directs the low frequency to the Subwoofer and outputs the High frequencies to your staellite speakers making them more balanced with the subwoofer only having to reproduce the mid and high frequencies. Both Subwoofers are passive with no level controls. The OMSUB200 is meant to receive a full range signal from your receiver/amplifier with volume being controlled for both the sub and satellite from the receiver/amplifier. The RSUB300 is meant to be driven with a dedicated Subwoofer amplifier like our SMP250 which has a Variable Crossover knob and volume control. Note most receivers that feature a dedicated sub output are Audio Video Receivers that are powering a subwoofer as part of a Home Theater surround sound system.


By Connor from Yorba Linda, California on May 3, 2012
What is the best gauge wire for this subwoofer?
By Customer Service - Q&A on May 4, 2012

Hi Connor:

Normal connection: 16 gauge up to 80 feet, 14 gauge 80 to 160 and 12 gauge above that. For Low Pass only (sub-woofer) I would start with 14 gauge up to 80 feet and 12 gauge beyond that.


By mac from minnesota on May 27, 2012
will this wireless sub work with my PC? I have a bose PC 3 peice speaker system with a sub.

How does the transmitter hook up to the computer?
By Customer Service - Q&A on May 29, 2012

Hi Mac:

This subwoofer is not wireless. It is a passive sub that needs an amplifier connected by speaker wire.


By Rick from Florida on February 2, 2012
Are these two speaker units joined as a unit, or are they separable? If they are separable, what are some location guidelines on locating the subs.
By Customer Service - Q&A on February 2, 2012

Hi Rick:

This is a single unit that features an internal 8 inch woofer and 10 inch passive radiator that operates as a reflective driver. It comes in two differnt colors, Granite Grey and Sandstone Brown.


By Jamie from Minnesota on February 6, 2012
Is this a powered subwoofer?
By Customer Service - Q&A on February 7, 2012

HI Jamie:

When you see in the features Power Handling: 500 Watts, it usually means the Subwoofer is not powered. If it listed Power Rating: 250 watts RMS as an example then it would be telling you it is powered. So no this is not powered.


By Matt from Manitoba, Canada on April 16, 2012
I have an Onkyo A/V receiver with a subwoofer out. Will it have enough power to make this sub sound good?
By Customer Service - Q&A on April 17, 2012

Hi Matt:

Most AV Receivers feature a dedicated Pre-amp output for a subwoofer output where you need to add either a Powered Subwoofer or in the case of our RSUB300 you would need to add an SMP250 dedicated Subwoofer Amplifier to make these work. Could you let us know which particular Onkyo Receiver you want to use so we can check compatibilty to the RSUB300 and masybe provide you with a better answer.


Product Reviews

OSD Audio RSUB300 10" Dual Woofer Outdoor Rock Subwoofer with 500W of Power and Aerospace-grade All Weather Enclosure
5 Stars based on 10 Review(s)
San Francisco, California
5 Stars
I would recommend this item to a friend.

Very nice addition to the back yard.
May 6, 2013
Last year I ordered two of these speakers for my large back yard. They sound so nice I ordered two more to replace my non-rock speakers. Now I have 4 woofers in my back yard in addition to non-woofer speakers. My back yard sounds like I have a professional DJ at all times. I have these speakers about 30-50 feet from each other (one in each corner of the back yard). It's way overkill but the sound can not be beat.
Best Uses:
Spread apart about 30-50 feet from each other and turn up the volume.

Danny Logan
5 Stars
I would recommend this item to a friend.

very good
April 29, 2013
Sounds great and looks good
sounds good
Best Uses:
outdoor subwoofer

5 Stars
I would recommend this item to a friend.

December 15, 2011
Easy to Mount, LOOKS REAL, Easy To Setup, Great Sound Quality, Attractive Design, Good Power Output
Best Uses:

Bob Roberts
Los Angeles, CA
5 Stars
I would recommend this item to a friend.

Great sounding sub!
September 19, 2011
I have been stalking OSD for this sub to become available again. I live in an apartment with a rooftop patio and I was missing the sub sound from my outdoor speakers. I have this sub installed sitting right on my patio and it sounds great. I can't wait to install it in my own real backyard with it's own receiver to really take this for a spin!
Great Sound Quality, Easy To Setup, Attractive Design
Best Uses:
Home, Outdoors

Tipton, IN
5 Stars

This sub is one of the ...
March 8, 2010
This sub is one of the best additions you will make to an outdoor setup. This paired with the AP line brings sound to your backyard that you really can't imagine until you hear it.

5 Stars

I've been told I ...
January 12, 2009
I've been told I have the best backyard in the neighborhood. I tell people it is because we always have music and quality sound using your subwoofer.

Tim Scoff
5 Stars

Wow! This made a huge ...
February 8, 2007
Wow! This made a huge difference in the sound of my outdoor movie theater. I can't believe how much better it sounds with this than it sounded without it, and I was thrilled with the sound before I bought the subwoofer.

ken depew
5 Stars

This sub kicks I have two ...
May 10, 2006
This sub kicks I have two hf15s and this sub what a system

5 Stars

I checked the omni ...
May 4, 2006
I checked the omni subrock and the green omni subwoofer before I buy this. There's no comparison on sound quality. If you like rich smooth bass, get this subwoofer.

5 Stars

Can't belive how ...
May 4, 2006
Can't belive how powerful this rock is!