Subwoofer Test 0–150 Hz Sweep Frequency On Screen | Bass Test Tone

Subwoofer Test — 0 to 150 Hz Linear Sweep | Frequency Shown On Screen This is a 10-minute continuous sine-wave sweep that rises smoothly from 0 Hz to 150 Hz. The current frequency is displayed in real time on screen, so you can follow along and identify exactly where your subwoofer, room, or headphones respond — and where they roll off. What you can use it for: • Finding the tuning frequency and usable low-end extension of a subwoofer or speaker • Spotting room resonances, rattles, and buzzing objects (furniture, doors, panels, light fixtures) • Checking the low-frequency response of headphones, earbuds, and car audio systems • Hearing the limits of your own hearing at the bottom of the spectrum • Subwoofer break-in / exercise of the driver suspension Timeline / frequency markers (linear sweep, +0.25 Hz per second): 0:00 — 0 Hz (start) 0:40 — 10 Hz 1:20 — 20 Hz (feel-it-in-your-chest territory) 2:00 — 30 Hz 2:40 — 40 Hz 3:20 — 50 Hz 4:00 — 60 Hz (typical subwoofer crossover region) 5:20 — 80 Hz 6:40 — 100 Hz 8:00 — 120 Hz 10:00 — 150 Hz (end) ⚠️ Warnings: • This test contains very low frequencies and high-level sine tones — play it at a moderate volume first. • Protect your hearing and your equipment: don't run at maximum level for the full 10 minutes, especially near the driver's limits. • Very low frequencies can cause woofer over-excursion; reduce volume if you hear distortion or popping. Use headphones or a proper subwoofer system for the best low-frequency reproduction. Phone and laptop speakers will not reproduce most of this range. If this helped you tune or test your system, like, comment with your results, and subscribe for more audio test tones and calibration content.