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The R-100SW is the 10-inch member of Klipsch’s Reference subwoofer line and one of the most widely sold budget subs. Klipsch has since introduced the R-101SW, but the R-100SW is still widely available. Here’s what you get, where it runs out of steam and when to step up to a 12-inch.
Klipsch R-100SW
An easy, compact way to add real bass to a TV or small home theater. It’s a step up from soundbar-only bass, but it won’t dig as deep or play as loud as a good 12-inch sub.
- 10-inch spun-copper IMG woofer
- 150 W continuous / 300 W peak
- Ported, rear port
- 32–120 Hz ±3 dB
- Line/LFE inputs
If you have a small or medium room and a receiver with a sub output, it’s a straightforward, good-looking choice. If you have more space or want deeper bass, the 12-inch R-120SW or R-121SW is worth the extra.
- Compact cabinet for a ported sub
- Front-firing woofer is easy to place
- Simple setup with an AV receiver
- Matches Klipsch Reference speakers
- 32 Hz rating means less deep bass than 12-inch rivals
- No speaker-level inputs, app or EQ
- Superseded by the R-101SW, so stock may vary
Key specifications
| Spec | Klipsch R-100SW |
|---|---|
| Driver | 10-inch spun-copper IMG woofer, front-firing |
| Amplifier | All-digital, 150 W continuous / 300 W peak |
| Enclosure | Bass reflex, rear-facing port (MDF) |
| Frequency response | 32–120 Hz ±3 dB |
| Controls | Volume, low-pass, phase |
| Inputs | Line/LFE RCA |
| Size and weight | 14.5 × 12.5 × 16.4 in (H × W × D), about 24 lb |
We couldn’t find independent measurements of the R-100SW, so this review relies on Klipsch’s specs, the established behavior of small ported subs, and long-running owner feedback rather than lab data.
How it sounds
Movies and games
A 10-inch ported sub rated to 32 Hz covers the body of most film effects (engines, explosions, score) but not the deepest rumble below 30 Hz. In a small to medium room, that’s still a big upgrade over TV or soundbar bass. Push it hard in a large space and it will run out of headroom sooner than a 12-inch model.
Music
For pop, rock and electronic music it adds weight and punch to bookshelf speakers. Ported 10-inch subs can sound a little loose at high volume, so keep the level sensible and the crossover low enough that it doesn’t draw attention to itself.
Setup tips
- Keep the rear port clear. Leave a few inches between the back of the cabinet and the wall.
- Start near the front of the room. Use our placement calculator to check for room peaks.
- Crossover at 80 Hz in your receiver, with the sub’s own low-pass set to its highest setting or bypass. Our crossover finder explains why.
- Avoid corners in small rooms. A corner adds boom that a small ported sub doesn’t need.
How it compares
| Klipsch R-100SW | Klipsch R-121SW | Polk Monitor XT10 | |
|---|---|---|---|
| Driver | 10-inch | 12-inch | 10-inch |
| Amplifier | 150 W continuous | 200 W continuous | Class D |
| Rated low end | 32 Hz (±3 dB) | 28 Hz | See Polk’s spec sheet |
| Size | 14.5 × 12.5 × 16.4 in | 16.6 × 16 × 19.7 in | Compact |
| Best for | Small rooms, TV | Medium rooms | Small rooms, Polk systems |
If you can fit a bigger box, the R-121SW digs a little deeper and plays louder. Polk’s compact Monitor XT10 is a smaller 10-inch alternative. See our best 10-inch subwoofers for more.
Who should buy it
- First-time sub buyers with an AV receiver.
- Small and medium living rooms.
- Klipsch speaker owners who want a matching look.
- TV and movie watchers upgrading from a soundbar’s built-in bass.
Who should look elsewhere
- If you want deep bass for big movie scenes, step up to a 12-inch like the R-121SW.
- If your amp has no sub output, choose a sub with speaker-level inputs, such as the Polk Monitor XT12.
- If you mostly play music, a sealed sub blends better; see subwoofers for music.
FAQs
What’s the difference between the R-100SW and R-101SW?
The R-101SW is Klipsch’s newer 10-inch Reference sub. The R-100SW remains widely sold; compare prices and buy whichever is cheaper.
Is a 10-inch sub big enough?
For rooms up to roughly 250 square feet, usually yes. Our size quiz recommends a size for your room.
Can I use it with a soundbar?
Only if the soundbar has a wired sub output. See our soundbar guide.
Does it need break-in?
A little, at most. See how to break in a subwoofer.