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. If your speakers use a different terminal, we recommend that you buy a 10-pack of female quick slides that you can splice onto the Bass Blockers.