Harrison Labs FMOD Inline Crossover Pair 70 Hz High Pass RCA

If anyone is wondering these work really well to integrate a subwoofer into a system if you have extra pre-outs. My amp is a nuforce sta200 and has high gain so the integrated high pass filter on the kef kc62 had a hiss sound when the music was not playing so I changed to these instead and works like a charm. My system: source is raspberry pi4 running moode audio player connected via usb to Denafrips Ares II connected via rca to Schitt Saga + (tube buffer turned on) connected via one preout rca to Kef kc62 subwoofer, the second preout rca cables to FMOD 70hx high pass filters connected directly to Nuforce STA200 amp driving Kef LS50s. For my room the Kef kc62crossover is just a click above 70hz and integrates nicely with the LS50s.

Good product, what I need for my sound system.

Very pleased! This was a cost effective solution for using in my car for my mids/highs amplifier. I suggest this to not be a solution for higher quality audio equipment. A proper crossover in line, or at the speakers might provide better results. These do change the crossover based on the impedance connected to them. Mine came out around 110Hz HPF. They are rated for 70Hz HPF at 10kOhms. I have tested these facing both ways in line, and they work well either way. Maybe it's just an issue with LPF versions. I would still recommend facing the male end downstream, or directly connected to the amplifier input. I also didn't notice any change in sound quality. I tried them on studio monitors and still could not notice any difference in SQ. Treble and mids are still clean and clear.

Using these between my Emotiva pre-amp and amplifier to filter out the lower frequencies to my KEF Q100 bookshelfs. They work flawlessly and haven’t heard any difference in sound quality, if anything it’s simply improved by the speakers not pushing out messy bass notes they can’t reproduce well, and leaving that task up to my SVS subwoofer which i have crossing over at 80hz (per manufacturer’s recommendations).

Great high pass filters. I use them on my amplifier input to my bass speakers in my B&W CM5 loudspeakers which i have bi-amped from a Sunfire Cinema Grand amp. My Preamp does not have bass mgmt. capability, so these do a great job of lessening the stress of lower frequencies on the woofers and opens up the sound.

Clean and clear solution to customizing frequencies arriving at the inputs of our Jolida Amps. Superb performance and convenience.

<---------------------> These FMODs Attenuate the audio level tremendously... soo much so that you can not tell theres any signal. I DO NOT recomend! Even with a strong amplifier the audio level is too low to be useful. <---------------------->

Cuts some of that nasty bass in your home stereo setup. If you are over 14 years old you might want to try the 100 Hz High Pass units. If you are over 60 you may need the 150 Hz ones, that's what I'm using.