Niles SW8 Subwoofer
- 8" active woofer plus two 8" passive radiators
- 300-Watt digital amplifier per description, 1200 Watts in specs
- LFE and stereo L/R line-level inputs
- Pass-through outputs cascade to three more subs
- Adjustable frequency control with bypass
- 18 Pounds, 1 year warranty
Last refreshed Jun 20, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact powered subwoofer that fills in bass for a home theater or music system, with flexible line inputs and a crossover bypass. Power figures conflict on the listing, so judge by the description.
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ASIN: B006T868EEModel: SW8Category: Subwoofers
Overview
A homeowner adding bass to a living room or a music system gets an active aluminum woofer paired with two passive radiators in a small cabinet. It takes LFE or stereo line inputs from a receiver and can pass the signal on to more subwoofers.
Passive radiators let a small box move as much air as a larger single driver, so the bass feels bigger than the footprint. Input options are line level only, and the listing gives two very different power ratings.
Who it's for
Living rooms and media rooms that need bass without a large cabinet are a natural home. Setups with no line-level sub output on the amp should look for a sub with speaker-level inputs.
Pros and cons
- Two passive radiators add bass output
- Aluminum cones resist flex
- Digital amp runs cool
- Daisy-chain up to three more subs
- Power ratings conflict on the listing
- Speaker-level inputs not listed
- Frequency response not listed
- Short one year warranty
Performance notes
Bass depth comes from the active driver and two passive radiators sharing the work, giving the air movement of a larger cone. Rigid aluminum cones lower distortion at higher volumes. Setting the bypass and letting the receiver handle crossover usually gives the smoothest blend with the main speakers.
Specifications
| Brand | Niles |
|---|---|
| Model | SW8 |
| Dimensions & fit | |
| Woofer Diameter | 8" active |
| Item weight | 18 Pounds |
| Item Dimensions D x W x H | 13" D x 24.13" W x 11.25" H |
| Capacity & performance | |
| Speaker Maximum Output Power | 300-Watt amplifier (description), 1200 Watts (spec) |
| Outputs | Unbuffered stereo pass-through line outputs |
| Construction & materials | |
| Color | Black |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Wireless Technology | Bluetooth (spec sheet) |
| Passive radiators | Two 8" anodized aluminum |
| Amplification | Digital power amplifier |
| Low pass filter | Adjustable with bypass |
| Inputs | LFE and stereo L/R line-level |
Frequently asked questions
How do I connect the Niles SW8 to my receiver?
Use the LFE input or the stereo L/R line-level inputs. Unbuffered pass-through outputs can feed up to three additional subwoofers.
How powerful is the Niles SW8?
The description says it is driven by a 300-Watt amplifier, while the spec sheet lists 1200 Watts. Treat the description figure as the amplifier rating.
Should I use the crossover on the Niles SW8 or my receiver?
The frequency control has a bypass position that removes low pass filtering in the sub, so the receiver or preamp can handle bass filtering.
Does the Niles SW8 have speaker-level inputs?
Only LFE and stereo line-level inputs are listed.