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Subwoofer test programs
Subwoofer Sweep
ReadyBass Drop Test
ReadyMusic Test
ReadyTip: Set your system volume to an appropriate level before starting. This slider controls only the in-app output level.
Deep bass sweep and drop tests to verify subwoofer performance.
Test your subwoofer with a deep bass frequency sweep from 10Hz to 200Hz and rapid bass drop tests. Free, instant, works in any browser.
The sweep plays a continuous tone from 10Hz up to 200Hz, covering your subwoofer's full operating range. It reveals dead spots, resonance peaks, and roll-off issues. A healthy sub should produce smooth, even output without rattling or sudden volume changes.
| Range | Frequency | What happens |
|---|---|---|
| Infrasound | 10 - 20 Hz | Felt as pressure, below hearing |
| Sub-bass | 20 - 60 Hz | Deep rumble, movie explosions |
| Bass | 60 - 120 Hz | Kick drums, bass drops |
| Upper bass | 120 - 200 Hz | Crossover zone with mains |
Easy on the volume. Subwoofers move serious air. Start at moderate volume. Very low frequencies (below 20Hz) can damage poorly built enclosures at high volume. Your neighbors will also thank you.
The bass drop test checks how fast your subwoofer responds to rapid frequency changes. It simulates the deep hits you hear in music and movies. A good sub should respond quickly and cleanly without lagging or sounding muddy. Listen for tight, controlled bass with a clear start and stop.
Good signs
Bad signs
If bass sounds boomy or muddy, try moving your subwoofer away from the corner. Even a few inches can make a huge difference.
Start with your sub near the front wall, off to one side.
Run the sweep test and listen for smooth bass.
Move the sub a few inches and test again.
Try the "subwoofer crawl": put it at your seat, crawl around the room, and find where bass sounds best. Place the sub there.
Avoid tight corners if bass sounds boomy. Pull it out 6-12 inches.
| Size | Best for | Low reach | Output |
|---|---|---|---|
| 8" | Small rooms, desks | ~35 Hz | Moderate |
| 10" | Medium rooms | ~25 Hz | Good |
| 12" | Large rooms, home theater | ~20 Hz | Loud |
| 15"+ | Dedicated theater, bass lovers | ~15 Hz | Very loud |
Run the bass sweep from 10Hz to 200Hz. A working sub should produce smooth, even bass without rattling or distortion.
Most subs cover 20Hz to 200Hz. High-end models reach as low as 10Hz. The typical crossover with main speakers is 80-120Hz.
Frequencies below 20Hz are below human hearing but still create physical vibrations. That's called infrasound. Your sub is working, you just feel it instead of hearing it.
Start near the front wall, test, and adjust. Corners boost bass but can sound boomy. The "subwoofer crawl" technique helps find the sweet spot for your room.
