Guided test steps
- Input
- 125 > 20 Hz
- Expected output
- 9
Nine tones, in descending order.
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subwoofer test online
Open Guided mode, set the device volume to about 30% and answer nine tones, from 125 Hz down to 20 Hz. The result gives the lowest frequency your subwoofer played cleanly.
Nine tones, in descending order.
Lowest clean frequency 40 Hz, verdict good.
Verdict limited.
63 does not count and 80 becomes a gap. Lowest clean: 100 Hz.
Lowest clean 63 Hz, lowest audible 40 Hz.
Open Guided mode and answer 9 tones from 125 Hz down to 20 Hz. The result shows the lowest frequency the subwoofer played cleanly. To hear what happens in the middle of the range, use the 20 to 200 Hz Sweep and tap mark when the sound changes. Put the subwoofer where it will really sit, because its position in the room changes the result.
It works for either, because the browser just sends the signal along the same path as music. With a passive one the amplifier does the power work, and the amplifier volume counts as much as the tool's control. Always start with the volume low.
Not necessarily. At 20 Hz the tone needs a high level to be noticed, and a small room may not reinforce a 17.2 m wave. Raise the volume carefully, try another position and compare with 31.5 and 40 Hz. If those vanish too, it is worth checking cables, phase wiring and the subwoofer's crossover setting.
You can, with the phone connected to the car stereo by cable or Bluetooth and the car parked. The cabin seals the air and reinforces bass differently from a room, so the result applies to that car, in that seat. Keep the volume low at first, because bass inside a car arrives stronger than it seems.
Start with the volume low. Loud bass can damage speakers and headphones and tire your hearing. Set the device volume to about 30%, raise it gradually and stop if you hear crackling, hissing or the cone bottoming out. With headphones, keep the volume lower still.
This control only sets the signal. Your device volume matters more: start low and raise it gradually. When you press play, the sound starts at a reduced level and rises over 2.5 seconds (in the guided test, only the first tone).
There are 9 tones, from 125 Hz down to 20 Hz. For each one, say what you heard or felt. At the end the result shows how low your device responded.
Wavelength 8.6 m and period 25.0 ms. A normal ear needs about 51.1 dB SPL to hear this tone (ISO 226:2003 threshold).
The tone stops by itself after 60 seconds. Change the frequency while it plays to find the point where it fades.
Tap the mark button the moment the sound changes. The frequency at that instant is recorded.
The sweep is logarithmic: it takes the same time for each octave. Sudden buzzing or vibration is usually a loose part or the subwoofer port, not the speaker's limit.
Wavelength 8.6 m and period 25.0 ms. A normal ear needs about 51.1 dB SPL to hear this tone (ISO 226:2003 threshold).
Pulses make it easier to notice bass near the limit of the device and expose loose parts and port noise.