---
product_id: 256910642
title: "Klipsch Reference RB-81 II 150W RMS / 600W Peak Bookshelf Speaker - Black - Single Speaker"
brand: "klipsch"
price: "$1925.28"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/256910642-klipsch-reference-rb-81-ii-150w-rms-600w-peak-bookshelf
store_origin: EC
region: Ecuador
---

# 1" titanium horn tweeter for crystal-clear precision 150W RMS power for room-filling sound 97dB sensitivity for louder output with less energy Klipsch Reference RB-81 II 150W RMS / 600W Peak Bookshelf Speaker - Black - Single Speaker

**Brand:** klipsch
**Price:** $1925.28
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game—where power meets precision.

## Quick Answers

- **What is this?** Klipsch Reference RB-81 II 150W RMS / 600W Peak Bookshelf Speaker - Black - Single Speaker by klipsch
- **How much does it cost?** $1925.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/256910642-klipsch-reference-rb-81-ii-150w-rms-600w-peak-bookshelf)

## 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

- • **Deep, Punchy Bass:** 8" Cerametallic woofer pumps out rich, high-output lows that bring music and movies to life.
- • **Sleek & Versatile:** Elegant black woodgrain vinyl finish with dual threaded inserts for seamless integration into any setup.
- • **Effortless Loudness:** 97dB sensitivity ensures you get more volume with less power—perfect for energy-conscious audiophiles.
- • **Horn-Loaded Clarity:** Dynamic 1" titanium Linear Travel Suspension tweeter with Tractrix Horn tech for razor-sharp highs.
- • **Power Meets Precision:** 150W RMS / 600W peak delivers immersive, distortion-free audio that dominates any space.

## Overview

The Klipsch Reference RB-81 II bookshelf speaker combines 150W RMS power with a highly efficient 97dB sensitivity and a titanium horn-loaded tweeter, delivering crystal-clear highs and deep bass in a compact, stylish design. Engineered with proprietary Tractrix Horn technology, it fills larger rooms with lifelike audio, making it the ultimate choice for discerning listeners who demand top-tier performance without sacrificing space.

## Description

Reference RB-81 II 150W RMS / 600W Peak Bookshelf Speaker - Black - Single Speaker

## Features

- Dynamic 1" titanium Linear Travel Suspension horn-loaded tweeter, 8" high-output Cerametallic woofer
- Highly efficient design produces more output using less energy
- Top Of The Line Klipsch Book Shelf Speaker.
- Fills larger rooms with lifelike music and movie performances
- Accurate, non-fatiguing sound - Priced and Packaged Each.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0040Q51FE |
| Additional Features | Dynamic 1-inch titanium Linear Travel Suspension horn-loaded tweeter |
| Age Range Description | Adult |
| Antenna Location | Music |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo , Surround Sound |
| Battery Average Life | 8 Hours |
| Best Sellers Rank | #80,222 in Electronics ( See Top 100 in Electronics ) #32 in Floorstanding Speakers #67 in Surround Sound Systems #166 in Bookshelf Speakers |
| Brand | Klipsch |
| Built-In Media | Bookshelf Speaker |
| Color | Black |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Jack Connector (3.5mm Audio Jack) |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Controller Type | Corded Electric |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 out of 5 stars 258 Reviews |
| Enclosure Material | Cerametallic |
| Frequency Response | 24000 Hz |
| Impedance | 8 Ohms |
| Input Voltage | 2.83 Volts |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 12.3"D x 9.25"W x 19"H |
| Item Height | 19.1 inches |
| Item Weight | 12.5 Kilograms |
| MP3 player | No |
| Manufacturer | Klipsch |
| Model Name | RB-81 II |
| Model Number | 1011850 |
| Mounting Type | Shelf Mount |
| Number Of Circuits | 2 |
| Number of Audio Channels | 1.0 |
| Number of Items | 1 |
| Power Source | DC power supply |
| Series Number | 81 |
| Signal-to-Noise Ratio | 70 dB |
| Speaker Maximum Output Power | 600 Watts |
| Speaker Size | 8 Inches |
| Speaker Type | Woofer,Bookshelf, Tweeter |
| Specific Uses For Product | Indoor, larger rooms, music and movie playback |
| Subwoofer Connectivity Technology | Wireless |
| Subwoofer Diameter | 8 Inches |
| Tweeter Diameter | 1 Inches |
| UPC | 743878021820 |
| Unit Count | 1.0 Count |
| Warranty Description | Manufacturer |
| Warranty Type | Limited Warranty |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 15.5 Centimeters |

## Product Details

- **Brand:** Klipsch
- **Speaker maximum output power:** 600 Watts
- **Frequency response:** 24000 Hz
- **Connectivity technology:** With cable
- **Audio output mode:** Stereo, Surround Sound

## Images

![Klipsch Reference RB-81 II 150W RMS / 600W Peak Bookshelf Speaker - Black - Single Speaker - Image 1](https://m.media-amazon.com/images/I/71zMrGBVTwL.jpg)

## Questions & Answers

**Q: Any hiss heard in horns during quiet passages?**
A: This is typically on account of your integrated receiver's THD - on my Pioneer and Mcintosh (both of which have a THD of .005) the speakers were pitch black BUT when I hooked the exact same speakers up to my Rotel Integrated and separate amps (THD .3) there was always an audible hiss, it drove me NUTS - it's actually the reason I got rid of the Rotels. So even though horn tweeters are more sensitive and more likely to hiss - that is not the case with these - it's probably the stereo unit. Hope this helps.

**Q: Can these speakers be laid down sideways? I don’t have 19” space between shelves**
A: You could do that if needed i suppose but i will say if you are tight on space i would recommend looking at something a bit smaller. These are beautiful speakers but they definitely require some room, not your average bookshelf speaker by any means.

**Q: could you use two of these side by side as a center speaker to match my dual 8in  R-28F fronts ?**
A: Yes. however, the tweeter is a 90x60 degree directionality. 90degrees horizontal and 60degrees vertical. If you turn it on its side, the vertical axis become the horizontal axis. So if you watch movies alone, it may be perfect. But i find the 60degrees a bit narrow, and easy to go in and out of the directionality of it. 90 degrees has better fall off. But horn tweeters seem to be a lot more directional than other tech. YMMV

I love horn tweeters for movies. Simultaneously more nostalgic theater sound and very crystal clear on sound effects. Works well with speech too.

**Q: is this a pair (2 speakers) or just a single unit?**
A: This is a single speaker.   You would need to order 2 for a pair.

## Frequently Bought Together

- Klipsch Reference Series RB-81 II Bookshelf Speaker (Black)
- Klipsch RB-61 II Reference Series Bookshelf Loudspeakers, Black (Pair)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-25*