When browsing online listings, focus on these critical performance metrics rather than just "peak power" numbers:
: This measures continuous power handling. Aim for a woofer that matches your amplifier's output, ideally with about 20% more amplifier power than the woofer’s RMS for "headroom".
: This tells you how deep the bass goes. A "true" subwoofer should reach down to 20Hz or lower .
10 Things to Look for Before Buying a Subwoofer for Deep Bass
: Usually 2, 4, or 8 ohms . Your woofer's impedance must be compatible with your amplifier to avoid damaging your equipment.