Niles GSS10

In-ground subwoofer

  • Niles GSS10


  • Niles GSS10

    Installation details

  • Niles GSS10

    Side view


Our take on the Niles GSS10

by Marshall Chase

Outdoor speakers let you move the party outside

Outdoor speakers are built tough -- they laugh at wind, rain and weather. Tuck a pair under your eaves and they'll pump out the tunes to keep everybody smiling and swaying at your next cookout or pool party. We also have some "rock" speakers that blend seamlessly into your landscaped lawn or garden.

Deep, rich bass that disappears into the landscape

Try as they might, most outdoor speakers can't deliver the music's lowest tones. That's why Niles offers the GSS10 in-ground subwoofer. This 10" sub is designed to be buried 16"-18" under ground, leaving only its output port tube exposed. You'll get excellent bass performance over a broad area so your music system delivers full sound. The Niles GSS10 is made from industrial strength uPVC, the same type of material used in underground irrigation systems.The tube and its dome cover can be painted to match any environment. Its tough design is covered by Niles' limited lifetime warranty.

Read more

Separate amp required

The GSS10 has no built-in amplification or crossover, so it requires Niles' matching SWA500M amplifier. (The amp must be placed indoors.)

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  • requires Niles' SWA500M external subwoofer amplifier
  • all-weather enclosure and speaker terminals
  • passive (non-powered) design with bandpass enclosure
  • 10" mineral-filled polypropylene woofer
  • frequency response 25-110 Hz
  • 8-ohm impedance
  • recommended amplified power 50-500 watts
  • mono speaker-level input
  • recommended burial depth 16"-18"
  • make sure to check with your local building authorities as required prior to digging
  • use only wire that is rated for direct burial
  • 13"W x 28-5/8"L x 30-5/8"H
  • weight: 25 lbs.
  • warranty: limited lifetime
  • Our 60-day money-back guarantee

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

Features and Specs
Enclosure Bandpass
Tweeter Type N/A
Midrange Size ---
Woofer Size 10
Woofer Composition Polypropylene
Woofer Surround Rubber
Power Range (watts) 50-500
Sensitivity 110 dB
Impedance (ohms) 8
Frequency Response 25-110 H Hz
Connector Type Bare wire
Height (inches) 28-5/8
Width (inches) 13
Depth (inches) 30-5/8
Weight (pounds) 25
Mounting Bracket Included No
Parts Warranty Limited Lifetime
Labor Warranty Limited Lifetime
Product Research
What's in the box?

Download owner's manual

  • Black subwoofer enclosure (10" woofer loaded)
  • Bass port tube
  • 8 Hex-head screws (Length=5/8")
  • 3mm Hex head screwdriver bit
  • 3mm Hex wrench
  • Installation Guide
  • Limited Warranty card

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 Niles Audio GSS10 Garden In-Ground Subwoofer is designed to deliver powerful bass to extended outdoor listening areas. It is a natural complement to the Niles Audio GS4 Garden Satellite Speakers, or can enhance most any outdoor speaker system. The woofer enclosure is buried underground with only the bass port tube visible above ground. It is completely weatherproof, and comes with a limited lifetime warranty.

Construction: The GSS10 is constructed from industrial strength uPVC, which is used in modern underground plumbing and irrigation systems. The bandpass enclosure is cylindrical with the port tube extending from one end. The port tube is fully paintable to blend into your landscaping. It fastens to the enclosure with 8 Hex-head screws (supplied). In addition to being weatherproof, the enclosure and port tube can withstand temperature extremes of -50°F to 185°F.

Driver: The GSS10 features a passive 10" Mineral-filled Polypropylene cone woofer. It is designed to be used with a subwoofer amplifier, such as the Niles SWA-500M. Bass management should be applied to the speaker at the amplifier, as there is no crossover or other filters on the subwoofer. Other specifications include:

  • Recommended Amplifier Power: 50-500 watts
  • Frequency Response: 25 Hz to 110 Hz
  • Maximum SPL: 110dB
  • Impedance: 8 ohms nominal, 6 ohms minimum

In-Ground Installation: Once assembled, the subwoofer is ready for installation. The enclosure requires a hole approximately 14" wide, 30" long, and 16-18" deep. Placement near walls and corners will enhance the bass output. Burial-rated speaker wire should be run from the amplifier to the subwoofer location. Waterproof wire nuts are included for splicing on your own speaker wire. The recommended gauge of the speaker wire is determined by the maximum length needed:

Wire Gauge Maximum Distance
16 100 feet
14 150 feet
12 200 feet
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Niles GSS10 Reviews

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4 out of 5

Good product, but proper placement is vital

Written By ChrisM, Wall, NJ on Thursday, September 25, 2014
Crutchfield Customer Review (What's this?)
These subs sound great, but it's important to understand how much ground you need to cover before you plan your layout. For example, I originally purchased (2) subwoofers to be powered by (2) 500w amps. I placed the subs about 45 feet apart in "logical" locations near the swimming pool so the 2 subs would add bass to anywhere around the pool and ideally beyond. Wrong! I ended up blowing the subs out twice because I had the sub-amp volume set to 10 and the SONOS amp (sub-rca out to niles sub amp) volume at 8 with the bass at 8. I realized that the 500w amp was too much for 1 500w subwoofer (maybe the SONOS sub out is hot and it was distorting). Anyways, the solution was to add MORE subs and space them much closer to one another. Final solution for my back yard of about 12,000 square feet was (10) Subwoofers powered by (5) Niles subwoofer amps which results in 250w/sub and I don't turn the sub-amp level higher than 7. You need to space the subs 20 feet apart so there is a little overlap. As a general rule, you are not going to hear a sub once you are more than 25 feet away unless it is in front of a concrete foundation (or inside a corner which really helps push the sound). In addition to the subs, I have 5 SONOS Amps powering 10 regular outdoor speakers consisting of 4 PSB, 4 Niles (little brown things which sound surprisingly good) and 2 Klipsche. I wish I knew when I started the project the general rule: 2 subs per 500w amp and subs need to be 20 feet apart max.
Good sound, fairly priced
Instructions should mention proper count and placement for a large backyard
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5 out of 5

Niles GSS10

Written By CH, Bakersfield, CA on Tuesday, March 26, 2013
Crutchfield Customer Review (What's this?)
Put 3 of them in the ground tied into our sound system and they rock the patio area really well
Easy install
having to trench wiring
3 out of 4 people found this helpful
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