---
product_id: 12344369
title: "Harrison Labs FMOD Inline Crossover Pair 70 Hz High Pass RCA"
brand: "unifun"
price: "235 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Unifun"
url: https://www.desertcart.pl/products/12344369-harrison-labs-fmod-inline-crossover-pair-70-hz-high-pass
store_origin: PL
region: Poland
---

# 70 Hz high pass frequency 12 dB/octave slope precision 24kt gold brass durability Harrison Labs FMOD Inline Crossover Pair 70 Hz High Pass RCA

**Brand:** unifun
**Price:** 235 zł
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—because your system deserves the crossover edge.

## Quick Answers

- **What is this?** Harrison Labs FMOD Inline Crossover Pair 70 Hz High Pass RCA by unifun
- **How much does it cost?** 235 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/12344369-harrison-labs-fmod-inline-crossover-pair-70-hz-high-pass)

## Best For

- unifun enthusiasts

## Why This Product

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

## Key Features

- • **Premium Build Quality:** Crafted with 24kt gold over brass connectors ensuring superior conductivity and long-lasting reliability.
- • **Precision Audio Control:** Experience crystal-clear sound separation with a sharp 12 dB per octave slope for flawless high-pass filtering.
- • **Optimized Frequency Tuning:** Target the sweet spot at 70 Hz to seamlessly integrate subwoofers and bookshelf speakers like a pro.
- • **Plug-and-Play Compatibility:** Works effortlessly with all RCA input amps, making upgrades and system tweaks hassle-free.
- • **Made in the USA with Warranty:** Backed by a 1-year manufacturer warranty, combining trusted craftsmanship with peace of mind.

## Overview

The Harrison Labs FMOD Inline Crossover Pair is a high-pass passive crossover operating at 70 Hz with a precise 12 dB per octave slope. Featuring premium 24kt gold over brass construction, it ensures optimal signal integrity and durability. Designed for seamless integration with RCA input amplifiers, this U.S.-made pair offers audiophiles and professionals a reliable, plug-and-play solution to enhance subwoofer and speaker performance, backed by a 1-year warranty.

## Description

Harrison Labs' FMOD Inline Crossover Pair, operating at 70 Hz with a High Pass RCA configuration, offers a 12 dB per octave slope. This passive crossover outperforms pricier powered alternatives, coming in pairs and allowing combination with other FMODs or crossovers to adjust bandpass ranges, slope, and frequency point. It's compatible with all RCA input amps.

Review: Works perfectly to integrate subwoofer and bookshelves - 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.
Review: Important accessories to my subwoofer. - Good product, what I need for my sound system.

## Features

- Design: Inline
- Crossover Type: High Pass
- Slope: 12 dB per octave
- Maximum Input: 10 volts RMS
- Construction: 24kt Gold over Brass
- Warranty: 1-year manufacturer
- Origin: Made in the U.S.A

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006N41JW |
| Best Sellers Rank | #859 in RCA Cables #2,383 in Car Audio & Video Accessories |
| Brand | UNIFUN |
| Cable Type | Coaxial |
| Color | Gold |
| Compatible Devices | Car Audio Amplifier, Active Crossover with RCA Inputs |
| Compatible Phone Models | No Compatible Phone Models |
| Connector Gender | Male-to-Male |
| Connector Type | RCA |
| Customer Reviews | 4.5 4.5 out of 5 stars (27) |
| Date First Available | June 8, 2012 |
| Department | all ages, unisex |
| Frequency | 70 Hz |
| Indoor/Outdoor Usage | Indoor |
| Item Weight | 1.44 ounces |
| Item model number | FMOD |
| Manufacturer | Harrison Labs |
| Maximum Voltage | 10 Volts |
| Number of Items | 2 |
| Number of Pins | 6 |
| Package Dimensions | 4.41 x 3.35 x 0.43 inches |
| Recommended Uses For Product | Connecting audio equipment in car or home entertainment systems, filtering high-frequency signals |
| Shape | Round |
| Special Feature | High Speed |
| Specification Met | Rca |
| UPC | 844632053207 |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** UNIFUN
- **Cable Type:** Coaxial
- **Compatible Devices:** Car Audio Amplifier, Active Crossover with RCA Inputs
- **Connector Type:** RCA
- **Special Feature:** High Speed

## Images

![Harrison Labs FMOD Inline Crossover Pair 70 Hz High Pass RCA - Image 1](https://m.media-amazon.com/images/I/6175ICTREqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly to integrate subwoofer and bookshelves
*by J***Y on February 4, 2022*

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.

### ⭐⭐⭐⭐⭐ Important accessories to my subwoofer.
*by J***O on February 18, 2026*

Good product, what I need for my sound system.

### ⭐⭐⭐⭐ Awesome solution for difficult setups!
*by Z***3 on August 10, 2017*

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.

## Frequently Bought Together

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

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-17*