If you like it loud, protect your speakers from bass distortion and enjoy cleaner sound with Bass Blockers. Each Bass Blocker handles up to 50 watts RMS with a 6 dB per octave roll-off. You'll find some general guidelines below for matching Bass Blockers to speaker size. For smaller speakers (3-1/2"s, 4"x6"s, 4"s), the 600 Hz Bass Blockers work well with low-powered systems, while the 800 Hz Blockers are a better choice for high-power applications.
Speaker Size Cut-off Frequency
6-1/2", 5"x7"/6"x8" — 150 Hz
5", 5-1/4" — 300 Hz
3-1/2", 4", 4"x6" — 600 Hz (low power)
3-1/2", 4", 4"x6" — 800 Hz (high power)
These models come fitted with easy-to-use quick-slide connectors that make installation a cinch. There's no splicing or crimping — just slide one of the Bass Blocker's connectors onto your Crutchfield speaker harness and the other Bass Blocker connector onto your speaker's positive terminal.
Cut-off points are at 4 ohms. If you use 8-ohm speakers, the cut-off point is half the listed frequency.
Note: The .250" spade terminals on these Bass Blockers won't connect to the terminals on some car speakers and many speaker harness adapters (such as Metra speaker adapters). If your speakers or harness adapter use a different terminal, we recommend that you buy a 10-pack of female quick slides to splice on the Bass Blockers.