---
product_id: 76195154
title: "Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch."
brand: "rackeys"
price: "523 som"
currency: KGS
in_stock: false
reviews_count: 8
url: https://www.desertcart.kg/products/76195154-rackeys-subwoofer-filter-board-with-inbuilt-phase-inversion-switch
store_origin: KG
region: Kyrgyzstan
---

# Phase inversion switch for perfect bass alignment Single supply voltage for seamless power Onboard gain control for precise audio tuning Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch.

**Brand:** rackeys
**Price:** 523 som
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Elevate your bass game—because your sound deserves the spotlight!

## Quick Answers

- **What is this?** Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. by rackeys
- **How much does it cost?** 523 som with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/76195154-rackeys-subwoofer-filter-board-with-inbuilt-phase-inversion-switch)

## Best For

- rackeys enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Dynamic 1-inch driver delivering deep, rich subwoofer tones
- • **Noise-Optimized Design:** Low 14 dB noise level ensures crystal-clear bass without distractions
- • **Plug & Play Simplicity:** Effortless setup with ready-to-use connectors and mounting brackets
- • **Universal Compatibility:** Works flawlessly with gaming consoles, home theaters, and mobile devices
- • **Tailored Bass Experience:** Adjust gain and phase to match your unique sound environment

## Overview

The Rackeys Subwoofer Filter Board (RAC-SF1) is a compact, plug-and-play audio enhancement device featuring single supply voltage, onboard gain control, and a phase inversion switch. Designed for seamless integration with gaming consoles, home theaters, and mobile devices, it delivers precise bass tuning with minimal noise, making it an essential upgrade for audiophiles seeking professional-grade sound customization.

## Description

Rackeys RAC-SF1 subwoofer audio filter bass board is single supply subwoofer filter for driving subwoofer amplifiers. It has wide input single-supply voltage range (9v to 18v) and a gain of approximately +14 db at 31Hz. There is an onboard phase invertion switch to invert the phase of signals at the output. The control of output gain is achievable via an onboard gain control.

## Features

- Single supply voltage.
- Onboard gain control.
- Onboard phase inverting switch.
- Fully plug and play board with connectors.
- Mounting brackets for easy mounting.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Speaker Type | Subwoofer |
| Special Feature | Subwoofer |
| Compatible Devices | Gaming Console, Stereo Receiver (connected to Smartphone, Tablet, Laptop, MP3 Player), Home Theater |
| Is Waterproof | false |
| Control Method | Touch |
| Wireless Communication Technology | Bluetooth |
| Speaker Size | 1 Inches |
| Power Source | DC |
| Tweeter Diameter | 1 Inches |
| Audio Driver Type | Dynamic Driver |
| Connectivity Protocol | Bluetooth |
| Manufacturer | Rackeys |
| Model | RAC-SF1 |
| Item model number | RAC-SF1 |
| Special Features | Subwoofer |
| Audio input compatible with the item | Auxiliary |
| Noise Level | 14 dB |
| Batteries Included | No |
| Batteries Required | No |
| Has Auto Focus | No |
| Programmable Buttons | No |
| Manufacturer | Rackeys |

## Product Details

- **Brand:** RACKEYS
- **Connectivity Technology:** Bluetooth
- **Audio Output Mode:** Surround
- **Mounting Type:** Bracket Mount
- **Model Name:** RAC-SF1

## Images

![Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. - Image 1](https://m.media-amazon.com/images/I/41sMDuNkxCL.jpg)
![Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. - Image 2](https://m.media-amazon.com/images/I/41DPZ+3Ov2L.jpg)
![Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. - Image 3](https://m.media-amazon.com/images/I/412JYjQIeVL.jpg)
![Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. - Image 4](https://m.media-amazon.com/images/I/41dz8qppQHL.jpg)
![Rackeys subwoofer Filter Board with inbuilt Phase Inversion Switch. - Image 5](https://m.media-amazon.com/images/I/31dt03IcRRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simply awesome
*by S***R on 15 October 2019*

Thanks to Amazon for this super bass filter, if woofer and amplifier properly matched it's best in market. Can compete any good subwoofer. I am using Samsung subwoofer with TPA3116D2 class D amplifier weigh is only 50 watt RMS at 4 ohms woofer with 13 volt supply in car. And it's thumping at phase reverse mode. Simply awesome.

### ⭐ Sha
*by S***H on 18 October 2019*

This is not a good working in the weight working very bad working

### ⭐⭐⭐⭐ Ok but not superb. At the price, no issues.
*by S***H on 12 September 2018*

Some hiss audible. Can be controlled by 220pF accross the output leads. No hum noticed when used with a good regulated power supply. Dynamic range or headroom is bit on lower side. Input level needs to carefully adjusted. Any peaks in signal will lead to clipping noise. Rest is all good.

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**Shop now:** [https://www.desertcart.kg/products/76195154-rackeys-subwoofer-filter-board-with-inbuilt-phase-inversion-switch](https://www.desertcart.kg/products/76195154-rackeys-subwoofer-filter-board-with-inbuilt-phase-inversion-switch)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-21*