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Pair of bass-blocker crossovers in yellow heat-shrink tubing with wire leads

PAC

PAC Bass Blocker BB3PR Pair 50W 400/800Hz

SKU CH-E95A-CJ4V8

Protects mid-range speakers by filtering low frequencies below 400 Hz at 8 ohms or 800 Hz at 4 ohms while handling up to 50 watts

  • TypeInstallation Tools
  • Protects tweeters from damage by filtering low frequencies
  • Handles up to 50 watts for reliable power management
  • Yellow colour-coded leads simplify identification during installation
  • Heat-shrink tubing encases wires for straightforward fitting
  • Crossover points at 400 Hz and 800 Hz match speaker impedance

Bass blocker for 5 1/4" speakers

The PAC BB3PR bass blocker protects 5 1/4 inch speakers by removing low-end frequencies that exceed their operating range. Sold as a pair, each unit handles up to 50 watts and uses yellow colour-coded leads for quick identification. The components are encased in heat-shrink tubing with wire leads to simplify installation in a vehicle audio system.

Upgrade from unfiltered speaker connections

Adding these filters replaces a direct speaker connection that allows the full frequency spectrum to reach midrange or tweeter drivers. The upgrade is worthwhile when low-frequency content causes distortion or risks mechanical damage to smaller cones. By cutting frequencies below the crossover point, the drivers operate within their intended range and deliver cleaner output.

Handles 50 watts with 400/800 Hz crossover

Each blocker comfortably manages 50 watts of amplifier power while filtering frequencies from 0 to 800 Hz at 4 ohms and 0 to 400 Hz at 8 ohms. This headroom suits typical midrange and tweeter applications in car audio. The fixed crossover points mean the units cannot be adjusted for different slopes or lower power thresholds.

Highlights

  • Protects tweeters from damage by filtering low frequencies
  • Handles up to 50 watts for reliable power management
  • Yellow colour-coded leads simplify identification during installation
  • Heat-shrink tubing encases wires for straightforward fitting
  • Crossover points at 400 Hz and 800 Hz match speaker impedance

Specifications

TypeInstallation Tools

Questions about this item

What wire length and connector type do the BB3PR leads have for splicing into speaker wiring?

The bass blockers come encased in heat-shrink tubing with yellow colour-coded wire leads ready for direct splicing into the speaker circuit.

Which lead connects to the amplifier output and which to the speaker terminal during installation?

The leads are not polarity sensitive; either yellow lead can go to the amplifier output and the other to the speaker terminal.

Do the internal crossover components degrade and require periodic replacement?

The passive filter network is sealed in heat-shrink tubing and has no serviceable parts or scheduled replacement interval.

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