---
product_id: 11431680
title: "FMOD Inline Crossover Pair 50 Hz High Pass RCA"
brand: "harrison labs"
price: "RM283"
currency: MYR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.my/products/11431680-fmod-inline-crossover-pair-50-hz-high-pass-rca
store_origin: MY
region: Malaysia
---

# FMOD Inline Crossover Pair 50 Hz High Pass RCA

**Brand:** harrison labs
**Price:** RM283
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** FMOD Inline Crossover Pair 50 Hz High Pass RCA by harrison labs
- **How much does it cost?** RM283 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/11431680-fmod-inline-crossover-pair-50-hz-high-pass-rca)

## Best For

- harrison labs enthusiasts

## Why This Product

- Trusted harrison labs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

What is an FMOD? The FMOD is an active crossover simulator. It is better than a much more expensive electronic crossover that requires power to operate. FMODs are packaged in pairs and can be combined with other FMODs to obtain bandpass ranges or with other types of crossovers to change the slope and crossover frequency point. FMODs feature a 12 dB per octave crossover slope and are compatible with all RCA type input amps...simply place the FMOD in-line with the patch cable running between the source (head unit) and the amplifier. 24kt gold over brass construction, 10 volts maximum RMS input. One-year manfacturer warranty. Made in the U.S.A.

## Images

![FMOD Inline Crossover Pair 50 Hz High Pass RCA - Image 1](https://m.media-amazon.com/images/I/61jmF+-J1bL.jpg)
![FMOD Inline Crossover Pair 50 Hz High Pass RCA - Image 2](https://m.media-amazon.com/images/I/81MHTXl5L2L.jpg)
![FMOD Inline Crossover Pair 50 Hz High Pass RCA - Image 3](https://m.media-amazon.com/images/I/81edM6EIkcL.jpg)

## Questions & Answers

**Q: Are these filter bi-directional......Either end can be input and/or output???**
A: Haven't used these for a while, but I'm almost positive they are directional where the female is the input side and the male is the output side. I doubt very much that any damage would result by reversing the direction, but the either the signal would be cutoff or, more likely, the low-pass filter would be negated.

**Q: The website says the high end rolls off around 1000 hz seem only for subs?**
A: Go to Harrison labs site for best information.  Red are more focused on filtering out Low hz starting at a target frequency and rolling off below it.

**Q: Can I use these to limit the low freqencies out of my home subwoofer? Reduce or eliminate rumble?**
A: I personally think the 30Hz would be too low.  This same firm makes a product for just this purpose and it starts at 37Hz.  I have the 50Hz's just for this purpose and they do great and still let some very low frequency information into my sub.  If you purely want an infrasonic filter to keep your woofer cone from over extension, then these would be the ones but for sound quality improvement, I would personally go with the 50's.

**Q: What is the result if you combine a 50hz hp filter with a 30hz hp filter?**
A: Generally not recommended from a sonic standpoint, but the answer is that the filters would be compounded. Exactly how would be determined by the impedance characteristics of the filters vs. the amplifier. I'd expect what you'd get would be filter slope that would start rolling off at about 12db/oct near 50hz and then roughly double to 24db/oct near 30hz.

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work as I wanted them to.
*by D***. on June 10, 2025*

I used them to pair active speakers with a subwoofer. Add a Y split RCA cable and The crossover will divide the signal into appropriate frequency bands before sending it to the subwoofer and monitors.

### ⭐⭐ Degradation of audio signal
*by P***R on April 30, 2025*

Degrades the signal too much. I created my own passive filter to block the low frequencies and they sounded better than these by far.

### ⭐⭐⭐⭐⭐ Subwoofer rumble is removed, strong bass remains.
*by B***N on October 5, 2018*

This is an audio review as I don't use this audio system and filters often for home video. I was having a difficult time tuning my sub's crossover and output level for music. I prefer strong bass, especially in the drums and bass guitar area but don't care for heavy amounts of low frequency synth rumble that is prevalent in a lot of new recordings. I like the sound to be punchy and deep in the bass but not overly "rumbly". These filters do a very nice job of filtering out most of the very low bass but still let some of this information creep in so it's not a hard cutoff. I also have my subwoofer on a foam isolation pad because I have wood floors. The floors were also likely somewhat contributing to the overly deep sound. Bottom line, I know some people like very deep room vibrating bass and that's fine. For me, maybe if I'm watching a movie and want to hear the rumble of a building collapse or an explosion or something, that's fine I guess, but for music reproduction, no way. I'm not clear why they don't also include high pass filters on subwoofers so people can cut, to their liking, sounds below 40-50Hz to suit their needs and room conditions. These filters do just that, starting at 50Hz with a relatively slow 12db roll-off slope.

## Frequently Bought Together

- Harrison Labs FMOD Inline Crossover Pair 50 Hz High Pass RCA
- FMOD Crossover Pair 70 Hz Low Pass
- FMOD Crossover Pair 100 Hz High Pass

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-01-24*