BassFloor: Subwoofer Bass Test

How low does your bass really go? BassFloor is the subwoofer test and speaker test that gives you an actual answer: your system's bass floor in Hz, a rating, and a result card you can share.

★ FIND YOUR BASS FLOOR
The guided Bass Floor Test steps down from 80 Hz to 16 Hz while you listen (and feel). Tap "I hear / feel it" or "Gone" at each step and get the lowest frequency your subwoofer, car audio system, home theater or headphones can really play — from "Everyday bass" to "Earthquake machine". Share your number and challenge your friends' systems.

★ BASS SWEEP (300 Hz → 10 Hz)
Run a smooth log or linear frequency sweep and watch the big live Hz readout. When the sound disappears, that's your limit. When something buzzes, tap Stop — the readout freezes on the exact frequency that shakes the loose panel, trim or license plate. A slow "rattle hunt" sweep makes finding car rattles easy.

★ PRECISE BASS TONES & TONE GENERATOR
• One-tap low frequency tones: 16, 18, 20, 25, 30, 40, 50, 60, 80, 100 Hz and more
• Type any frequency from 10 to 300 Hz — perfect for a 20 Hz test or 30 Hz sub test
• Sine wave for clean testing, square wave "hard mode" for subwoofer torture tests
• Keeps playing with the screen off, controlled from the notification

★ CHANNEL & POLARITY CHECK
• Left / right / stereo speaker test with language-free beeps (left = 2 short, right = 1 long)
• Speaker polarity test: find out in about 10 seconds if one speaker is wired backwards (out of phase) and silently cancelling your bass — a common car audio and home theater install mistake

★ BUILT TO PROTECT YOUR SPEAKERS
Tones fade in and out smoothly, the output level is adjustable, and playback pauses automatically whenever your audio output changes — like when your phone connects to a car stereo or Bluetooth speaker — so you never get a surprise blast of bass. It never resumes on its own.

★ TIPS THAT MAKE RESULTS MEANINGFUL
Short, practical tips explain how to get a fair result: turn off bass boost and EQ, set the volume once, sit where you normally listen, and try more than one subwoofer position.

PERFECT FOR
• Checking how low your car subwoofer really goes after a new install or amp tune
• Finding what rattles in your car at 40 Hz before it drives you crazy
• Testing whether a home theater or soundbar subwoofer is working at all
• Finding out if your speakers are out of phase after rewiring
• Comparing the bass response of headphones, earbuds and Bluetooth speakers
• Settling the "whose system goes lower?" argument with a number

WHO IT'S FOR
Car audio builders and SPL fans • Home theater owners tuning a subwoofer • Headphone and speaker shoppers • DJs, producers and musicians • Anyone who loves deep bass

WHY BASSFLOOR
No account and no sign-up. No microphone permission: BassFloor only plays sound, it never listens. The tests work without an internet connection, the app is lightweight, and it's available in English, Spanish, Portuguese, Indonesian, Hindi, German and French.

AN HONEST NOTE
BassFloor doesn't measure anything with a microphone. Your bass floor is what you can hear and feel at your listening position, so it depends on your system, your volume, the room and your ears. That's exactly what makes it a real-world result.

CAUTION
Low frequencies at high volume can damage speakers that aren't built for them. Start at a moderate volume and increase gradually. Small phone speakers can't reproduce deep bass — connect the system you want to test via Bluetooth, aux or USB.

FREE, WITH AN AD-FREE OPTION
Every feature is free, supported by ads. One small one-time purchase removes all ads forever. No subscriptions.

Download BassFloor now and find out how low your system can go with a free subwoofer bass test.