About the Crutchfield Bass Blockers

Eliminate bass distortion in your speakers
Eliminate bass distortion in your speakers
Protect your new car speakers from bass distortion and enjoy cleaner sound with Crutchfield's Bass Blockers. Each Bass Blocker handles up to 50 watts RMS with a 6 dB per octave roll-off. Here are some general guidelines for matching Bass Blockers to speaker size.
Speaker Size Cut-off Frequency
6-1/2", 5"x7"/6"x8" — 150 Hz
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)
Tweeters — 5,000 Hz
These models come fitted with easy-to-use quick-slide connectors that make installation a cinch — no splicing or crimping needed.
The listed cut-off points are at 4 ohms. If you use 8-ohm speakers, the cut-off point is half the listed frequency. If you use 2-ohm speakers, the cut-off point is double the listed frequency.
Note: You can connect these Bass Blockers in either direction, as the built-in capacitors are not polarized.
- pair of inline high-pass filters (150 Hz cut-off)
- handle up to 50 watts RMS
- 6 dB per octave roll-off
- warranty: 1 year
- MFR # BASS-265
What's in the box:
Crutchfield Bass Blockers owner's manual
- Two 150Hz bass blockers (attached 6" speaker wires on either end terminated by male and female quick-slide connectors)
Reviews (229)
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Product Research
Features
Bass Blockers: Bass Blockers stop speaker distortion caused by excessive bass relative to a speaker's bass output capability. They are especially useful with small diameter speakers and tweeters.
Crossover Point: The crossover point changes based on the speaker impedance.
Model | 2 ohms | 4 ohms | 8 ohms |
007BB150 | 300 Hz | 150 Hz | 75 Hz |
007BB300 | 600 Hz | 300 Hz | 150 Hz |
007BB600 | 1,200 Hz | 600 Hz | 300 Hz |
007BB5000 | 10,000 Hz | 5,000 Hz | 2,500 Hz |
Easy Installation: To install the Bass Blockers, slip the female connectors of the bass blocker onto the positive and negative speaker terminals of the new speaker, and plug the male connectors into the speaker wiring adapter harness' positive and negative leads. If you don't want to use the terminals, cut them off, cut the speaker lead at a convenient location close to the speaker, then splice the Bass Blocker into the positive and negative speaker leads and insulate the connections. Bass blockers are not directional, so the orientation of the Bass Blockers on the positive and negative speaker leads is not important. Polarity is important; the white wire is positive and the black wire is negative.
The Crutchfield Bass Blockers replaces these items
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Customer Q&A
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These do a great job limiting the low frequency from my 3 1/2 speakers in my dash. It has taken all the distortion out of the music and my system sound great now.
Erik from W Bloomfield, MI