PFMOD ™ HP-SUB (Selectable High Pass Subsonic Filter)
$60.00
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PFMOD ™ HP-SUB (Selectable High Pass Subsonic Filter)
Product Details
🇺🇸 MADE IN THE USA 🇺🇸
Harrison Labs PFMOD HP-Sub | 2 Channel Selectable Passive Subsonic Filter & Rumble Reducer
Protect your subwoofers and maximize bass efficiency. The Harrison Laboratories HP-Sub is a specialized selectable passive inline 2 channel crossover, designed to function as a high-precision subsonic (infrasonic) filter. By removing ultra-low frequencies that fall below the audible range, this "rumble filter" prevents mechanical damage and ensures your amplifier power is focused entirely on the bass you can actually hear.
Technical Specifications
• Filter Type: Selectable Passive Inline Subsonic / High-Pass
• Selectable Frequencies: 20 Hz, 25 Hz, 30 Hz, and 35 Hz (Jumper Selectable)
• Slope: 12 dB per Octave (Standard)
• Design: Passive Active Crossover Simulator (No power required)
HP-SUB JUMPER CONFIGURATOR
Click your desired frequency to display the physical jumper configurations.
HIGH PASS ZONE (ROWS 1 & 2)
⚠️ USE TWEEZERS TO PULL OUT JUMPERS. THESE ARE NOT SWITCHES.
My feedback on PFMOD™ HP-SUB (High Pass Subsonic Filter)
Installed and working great! I’ve literally been searching for years for a passive 25Hz high pass. Thanks for making this!
Daniel M.
