---
product_id: 505664823
title: "Klipsch Reference Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers"
brand: "klipsch"
price: "5424.13 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Klipsch"
url: https://www.desertcart.tn/products/505664823-klipsch-reference-front-firing-subwoofer-with-revamped-spun-copper-thermoformed
store_origin: TN
region: Tunisia
---

# 400W all-digital amplifier power front-firing driver for flexible placement 12” spun-copper crystalline polymer woofer Klipsch Reference Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers

**Brand:** klipsch
**Price:** 5424.13 DT
**Availability:** ✅ In Stock

## Summary

> 🎶 Feel the bass, own the room — Klipsch R-121SW makes every moment cinematic!

## Quick Answers

- **What is this?** Klipsch Reference Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers by klipsch
- **How much does it cost?** 5424.13 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/505664823-klipsch-reference-front-firing-subwoofer-with-revamped-spun-copper-thermoformed)

## Best For

- klipsch enthusiasts

## Why This Product

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

## Key Features

- • **Placement Freedom:** Front-firing driver design lets you position your subwoofer anywhere in the room without sacrificing performance.
- • **Seamless Integration:** Low-pass crossover and phase control ensure perfect bass blending with your Klipsch speakers for a cohesive soundstage.
- • **Power Meets Efficiency:** Built-in all-digital amplifier pumps out 400 watts of clean, true-to-source bass with industry-leading efficiency.
- • **Plug & Play Compatibility:** Line/LFE inputs guarantee easy hookup with any AV receiver, making setup effortless and future-proof.
- • **Precision Bass Engineering:** 12-inch spun-copper crystalline polymer woofer delivers deep, distortion-free lows with minimal cone breakup.

## Overview

The Klipsch Reference R-121SW is a 12-inch front-firing subwoofer featuring a lightweight spun-copper thermoformed crystalline polymer woofer for clean, powerful bass. Powered by a 400-watt all-digital amplifier, it offers high efficiency and distortion-free low frequencies. With adjustable crossover and phase controls, it seamlessly integrates with your home theater setup, delivering immersive sound with flexible placement options. Ideal for professionals seeking premium audio performance with effortless compatibility and a sleek, floor-standing design.

## Description

The Klipsch Reference R-121SW 12” subwoofer features a revamped 12” spun-copper thermoformed crystalline polymer woofer that is exceptionally light and provides low frequency response, minimal cone breakup, and degradation-free distortion. The front-firing subwoofer allows you to place the sub wherever you want in your space, while the all-digital amplifier delivers ample power with Klipsch signature high efficiency.

Review: Lightweight, good performance, rumbles the lows but with control - I don't have the world's best back so the light weight of this subwoofer relative to its size and performance was appealing. It has good extension and can reproduce quite low frequencies, though its EQ has a hump at about 55hz. You can EQ that out or just enjoy it, nobody is going to make you stop! Group delay is good for its size and rear-ported construction as well, better even than some vaunted performers in its on sale price range. Ample dynamic range for cinematic low frequencies and when dialed in, it has a lively and relatively quick low frequency reinforcement for music as well. I pair mine with Klipsch RP-600m (first gen, love them) and set the crossover to reinforce from about 60hz down. Its loudness has been more than enough for my space, it can overwhelm the living room it is in when movies rumble! Feel it moving that low low air into the kitchen and other rooms even. But, to be maximally fair, if you are in a very large room you might want to consider a larger diameter speaker model or perhaps a higher output unit. I've had zero complaints about it's output but it is somewhat conservative compared to the Reference Premiere subs and some competitors, and it has rock solid DSP limiting that stops it from exceeding its capabilities. In my personal use even with bass impact action films I have not met its limits!
Review: Pleasently Surprising Oomph - Great sub! Connected this baby to my other Klipsch speakers via the sub out port and it worked instantly. (I did have to buy a separate insulated sub wire as this product does not come with one) I was able to get this on sale for 50% off and for that price it's amazing! The subwoofer is larger than expected, but I'm considering that a good thing in the end. (No need to upgrade in the future for me) The adjustable sound allows for subtle bass or wall shaking bass. All and all, this was more than I could have expected for the price!

## Features

- New 12” spun-copper thermoformed crystalline polymer woofers: exceptionally light while providing low frequency response, minimal cone breakup, and degradation-free distortion
- All Digital Amplifier: The built-in, all-digital amplifier delivers ample power with high efficiency and true-to-source accuracy in reproduction, ensuring maximum efficiency for best-in-class output, detail, and power.
- Front-firing driver: The high-performance driver provides deep bass and flexible room placement.
- Low-pass crossover and phase control: Ensures the subwoofer’s low-frequency tones blend with other Klipsch speakers and establish your ideal level of bass.
- Line/LFE inputs: Ensure compatibility with the AV Receiver of your choice

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09P8WJTB3 |
| Additional Features | Digital Amplifier |
| Antenna Location | For Televisions |
| Audio Driver Size | 12 inches |
| Audio Driver Type | Bass Driver |
| Audio Output Mode | Surround |
| Best Sellers Rank | #15,862 in Electronics ( See Top 100 in Electronics ) #23 in Home Audio Subwoofers |
| Brand | Klipsch |
| Built-In Media | Speaker |
| Color | Black |
| Compatible Devices | Television |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | Speaker Wire |
| Control Method | Touch |
| Controller Type | Touchpad |
| Customer Reviews | 4.7 out of 5 stars 204 Reviews |
| Enclosure Material | Copper |
| Frequency Response | 120 hertz |
| Is Waterproof | False |
| Item Dimensions D x W x H | 19.7"D x 16"W x 16.6"H |
| Item Weight | 34.2 pounds |
| Manufacturer | Klipsch |
| Model Name | R-121SW |
| Model Number | R-121SW |
| Mounting Type | Floor Standing |
| Number Of Circuits | 1 |
| Number of Audio Channels | 5.1 |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Series Number | 12 |
| Speaker Maximum Output Power | 400 watts |
| Speaker Size | 12 inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Television, Home Theater, Movie Theater |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 inches |
| UPC | 743878046786 |
| Unit Count | 1 Count |
| Warranty Description | 5 year manufacturer |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 12 inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** Klipsch
- **Connectivity Technology:** Speaker Wire
- **Frequency Response:** 120 hertz
- **Speaker Maximum Output Power:** 400 watts

## Images

![Klipsch Reference Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers - Image 1](https://m.media-amazon.com/images/I/51FX7KtCy4L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What are the differences between this and the 120sw?**
A: The R-121SW  has an updated woofer driver and a larger batter braced cabinet. It is able to produce a bit more bass and sound tighter.

**Q: When in auto position the led green light remains on even when the amp is off. is this normal?**
A: The subwoofer should shut off after about 15 minutes of no signal from the amp so it will not happen right as you shut the amp off. If the sub is still not going on standby, there may be some noise coming from the amp or wiring between the amp and subwoofer that is keeping the sub from going to sleep. Reach out to our support team through our website if you need further support.

**Q: Can you use a wireless kit with this sub**
A: You can use a 3rd party wireless kit that will connect using rca connections on the back of the sub. We do not make a wireless kit that will work with this subwoofer here. Thank you.

**Q: The product description and information say that this sub is wireless. How does it receive the signal from the receiver? Is there a transmitter, also?**
A: This subwoofer has no wireless function, looks like this is just a error in the listing description. This sub only has RCA wired inputs.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Lightweight, good performance, rumbles the lows but with control
*by J***F on June 10, 2025*

I don't have the world's best back so the light weight of this subwoofer relative to its size and performance was appealing. It has good extension and can reproduce quite low frequencies, though its EQ has a hump at about 55hz. You can EQ that out or just enjoy it, nobody is going to make you stop! Group delay is good for its size and rear-ported construction as well, better even than some vaunted performers in its on sale price range. Ample dynamic range for cinematic low frequencies and when dialed in, it has a lively and relatively quick low frequency reinforcement for music as well. I pair mine with Klipsch RP-600m (first gen, love them) and set the crossover to reinforce from about 60hz down. Its loudness has been more than enough for my space, it can overwhelm the living room it is in when movies rumble! Feel it moving that low low air into the kitchen and other rooms even. But, to be maximally fair, if you are in a very large room you might want to consider a larger diameter speaker model or perhaps a higher output unit. I've had zero complaints about it's output but it is somewhat conservative compared to the Reference Premiere subs and some competitors, and it has rock solid DSP limiting that stops it from exceeding its capabilities. In my personal use even with bass impact action films I have not met its limits!

### ⭐⭐⭐⭐⭐ Pleasently Surprising Oomph
*by W***M on January 6, 2026*

Great sub! Connected this baby to my other Klipsch speakers via the sub out port and it worked instantly. (I did have to buy a separate insulated sub wire as this product does not come with one) I was able to get this on sale for 50% off and for that price it's amazing! The subwoofer is larger than expected, but I'm considering that a good thing in the end. (No need to upgrade in the future for me) The adjustable sound allows for subtle bass or wall shaking bass. All and all, this was more than I could have expected for the price!

### ⭐⭐⭐⭐⭐ Impressive
*by A***R on June 8, 2026*

I had just returned a more premium branded sub that cost 3 times as much. This blows that out of the water! Definitely worth it. I was highly surprised. Has plenty of power and sound is deep and rumbling like thunder.

## Frequently Bought Together

- klipsch Reference R-121SW 12” Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers and an All-Digital Amplifier for Premium Sound in Black
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- klipsch Reference Next-Generation R-50M Horn-Loaded Bookshelf Speakers with 5.25” Spun-Copper Woofers for Best-in-Class Home Theater Sound in Black

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-07*