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FREE 30-day refund/replacement
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Availability:
In Stock.
Arrives
Thursday, Nov 12
At a glance
- Condition
- New
- Color
- Black
- Dimensions
- 12.3"D x 9.25"W x 19"H
- Weight
- 12.5 kg
- Frequency Response
- 24000 hertz
- Audio Output Mode
- Stereo, Surround Sound
- Mounting Type
- Shelf Mount
- Warranty
- Manufacturer
- Works with
- Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop
Features 6
- Includes single speaker
- 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.
Description
A towering achievement in a bookshelf design, the Reference Series RB-81 II is a force to be reckoned with. It provides unrivaled music and movie performances to those who demand the very best, but don’t have the room to accommodate a floorstanding speaker.
Specs 47
| Brand | Klipsch |
|---|---|
| Speaker Maximum Output Power | 600 watts |
| Frequency Response | 24000 hertz |
| Connectivity Technology | Wired |
| Audio Output Mode | Stereo, Surround Sound |
| Mounting Type | Shelf Mount |
| Enclosure Material | Cerametallic |
| Speaker Type | Woofer,Bookshelf, Tweeter |
| Additional Features | Dynamic 1-inch titanium Linear Travel Suspension horn-loaded tweeter |
| Antenna Location | Music |
| Subwoofer Diameter | 8 inches |
| Color | Black |
| Is Waterproof | FALSE |
| Warranty Type | Limited Warranty |
| Control Method | Touch |
| Speaker Size | 8 inches |
| Woofer Diameter | 15.5 centimeters |
| Tweeter Diameter | 1 inches |
| Water Resistance Level | Waterproof |
| EU Spare Part Availability Duration | 7 years |
| Specific Uses For Product | Indoor, larger rooms, music and movie playback |
| Battery Average Life | 8 hours |
| Controller Type | Corded Electric |
| Unit Count | 1 Count |
| Item Dimensions D x W x H | 12.3"D x 9.25"W x 19"H |
| Item Weight | 12.5 kg |
| Wireless Technology | Bluetooth |
| Subwoofer Connectivity Technology | Wireless |
| Connectivity Protocol | Jack Connector (3.5mm Audio Jack) |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 8 inches |
| Number Of Circuits | 2 |
| Model Number | 1011850 |
| Model Name | RB-81 II |
| Built-In Media | Bookshelf Speaker |
| Number of Items | 1 |
| Customer Package Type | Standard Packaging |
| Series Number | 81 |
| UPC | 743878021820 |
| Manufacturer | Klipsch |
| Age Range Description | Adult |
| Input Voltage | 2.83 volts |
| Number of Audio Channels | 1 |
| Impedance | 8 ohm |
| Signal-to-Noise Ratio | 70 db |
| Compatible with Vehicle Type | Car |
| Power Source | DC power supply |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 12
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Don't wait too long...
I have wanted these speakers since getting my first pair of KB-15's, an earlier model made for Best Buy (5.25" LF/1" Al dome driven horn HF) and bargain priced at $130/pr shipped. I was amazed at their sound and sensitivity (efficiency). I A-B-ed them with mythen previous favorites - a pair of NHT SuperOne 2.1's bought new 12/14. Their great sensitivity over the NHT's almost sealed their fate - the small Klipsch speakers were moved to my hobby room, where they have been seriously enjoyed. My NHT's remained in my office, an 11' x 12' room where they are driven by an Onkyo 50 Wpc stereo receiver (TX-8020) and CDP (C-7030). I was pleased with the controlled bass and decent treble of the NHT's - but the midrange appeared lacking - I thought that the RB-81ii, with it's 8" LF driver and 1" Ti horn HF driver might be the answer. They seemed to have evaporated last winter. I checked Amazon for Prime stock of the speakers aperiodically - including a few weeks back, when I found them for $249/ea - a great price for the top of the line bookshelf speaker in their 'Reference' line - so I ordered a pair. I felt guilty - and cancelled the order the next day. Last Saturday, I checked - they were still available - I ordered another pair. I was determined to get them this time and they arrived Tuesday - in a word wow! They are large and heavy, which I was prepared for, having moved the bookcase's next shelf up allowing 22" vertical clearance. They are fed by #14 stranded zip cord, with the HF/LF jumpers in place. The front firing port allows placement of the 12.5" deep speaker in a 12" deep shelf, canted inward.. The coverage is wide - my ears are centered two feet in front of the plane the speakers are in and equidistant from the speakers (~5 ft). The stereo effect is consistent almost to the back wall (8 ft) and covers a cone three feet wide at my seated central position to six ft wide in front of the back wall. The LF is there, while the HF are great - and the MF is now present! It also takes a lot less to drive these speakers - my half-power HD < .03% can be appreciated (<.08% @ 50 WPC). I may have found my ideal speakers! If you think you might like them - don't wait too long - order your's. Oh, if they get any better after break-in... I'll be shocked. Besides being bi-wire capable, they have a nice grill cover that is held in place by magnets. The instruction manual is multilingual and pretty sparse. They come individually well-packed, too. My s/n's were ~100 apart... they looked identical - perfect - and 'factory fresh' - quite decent quality.
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Reviewed in the United States on November 12, 2015 by J. R. Tow
They sound amazing with very little power
They sound amazing with little power
Reviewed in the United States on June 24, 2026 by jewelanna pursell
Powerful Speakers!
These are such powerful and highly efficient speakers. You won't have to raise the volume past 2 or 3 before it fills a large room with powerful lows lows and highly articulate highs. Just keep in mind that these aren't really "bookshelf speakers"! They are large and heavy and will require pedestals (which they are already set up for) or a very strong shelf! However, they are worth every penny!
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Reviewed in the United States on March 24, 2024 by Jácques Dé Gátineâu
GREAT BOOKSHELF SPEAKERS !!!!!!!!
THESE 2 WAY SPEAKERS ARE NOTHING BUT OUSTANDING. THESE Klipsch RB-81 REFERANCE SPEAKERS ARE ON THE DISCOUTINUED LIST, BUILT LIKE A TANK, & THE SOUND IS SO CLEAR EVAN AT THIS PRICE POINT. THE SOUND STANGE IS EXPANSIVE WHEN YOU DRIVE THEM A LITTLE / LIKE A RACE HORSE. THE HIGHS ARE CLEAR & CRISP WHILE THE BASS IS TIGHT WITHOUT BOOMING OR EXHIBITING ANY FLABY DISTORTION. ( EXAMPLE ) GET A PHIL COLLINS CD & PLAY IN THE AIR TONIGHT & YOU WILL FEEL LIKE YOU ARE AT A LIVE CONCERT. TRUE, THE MIDS ARE A LITTLE THIN BUT WHAT DO EXPECT FROM A 2 WAY DESIGN. THESE SPEAKERS ARE IN MY BASEMENT BY THE BAR & EASILY FILL THE ENTIRE ROOM. UPSTAIRS FOR CRITICAL LISTENING I HAVE A SET OF 4 WAY, TOWER, STUDIO MONITOR SPEAKERS WITH A COST OF OVER $ 24,000.00 VERSUS THE Klipsch RB-81 BOOKSHELF SPEAKERS DOWNSTAIRS AT A COST OF LESS THAN $ 400.00 IT'S A NO BRAINER. THESE RB * 81 SPEAKERS ARE THE REAL DEAL SO YOU BETTER GRAB THEM WHILE YOU CAN BEFORE THEY ARE GONE.
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Reviewed in the United States on April 9, 2020 by BANKERTMP
Fat bass. Clean. and maybe a little too crisp.
These are great speakers, but... Don't get me wrong, I'm a huge Klipsch fan. There's just something about these speakers that could be a bit better. What is it? Well... My experience, is that they are almost too precise. There's a kind of edginess in the high end, like the designers wanted to make sure that every little metallic element of the music came through. The highs are certainly present, but there's a "granular" quality to them that I don't experience with paper speakers. It's almost like they're too clean and crisp. The lows are low and full, but a little loose, I imagine that is because they're ported and I'm using them in a relatively small room (12x14 bedroom) with parallel walls (not the best). What I like, is the headroom when it comes to volume. These guys can take some input and stay clean. I think they'd be great in larger rooms, where the sound can travel and "mature" a bit. Close up, they're just a little harsh and lack the organic smoothness of paper cones. That being said, this is Klipsch design and it's beautiful. I'm glad I bought these but I still miss my Tannoy PBM8s that I stupidly sold for $100. What was I thinking!
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Reviewed in the United States on April 7, 2018 by LA DIY
Outstanding Speakers
Awesome speakers. Perfect condition. Great sound.
Reviewed in the United States on February 18, 2026 by Brian
Expect nothing less than great sound from Klipsh!
I bought these Klipsch RB-81 Refence II speakers to replace a pair of vintage Klipsch KG 2.5 speakers. My initial impression after hooking them up was that they were very "tinny" sounding and had too much high end compared to my old speakers. After a couple of weeks of letting them get burned in with various types and levels of music, I still thought that they had too much high end. I had to make some pretty drastic corrections to my EQ to tone down the higher frequencies. Now that I finally have EQ set properly, I can honestly say that these speakers deliver a rich, full sound and pack a serious punch. I attribute the initial tinny sound to 1) using my old EQ settings (for different speakers) and expecting these speakers to be exactly the same. They are not. 2) The horns on these speakers are incredibly efficient and thus provide great output without the need for much EQ boost. Overall, I'm very pleased with these speakers and they look great too (especially with the grilles removed).
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Reviewed in the United States on September 13, 2017 by Ann M Bye
LIKE HEARING YOUR FAVORITE ALBUM FOR THE FIRST TIME
The RB-81 ll’s were the final piece to my puzzle and well worth the wait. I started with the Denon AVR-X1800 paired it with RB-61 ll’s and my old Bose 301’s then added the Audio Technica 120 XUSB Direct Drive Turntable with an orange mat.(looks cool:).Next came the Klipsch Next Gen 30C Horn Loaded Center Channel Speaker (WOW)followed by the R-100 Klipsch 10” Subwoofer (med size room)and lastly out with the 301’s in with the RB-81 ll’s. All I have to say is WOW I’ve listened to these albums for 40 years and I actually heard things for the first time and it was mind blowing. Yes it’s a big chunk of change but do it like me a month at a time and you won’t regret it if your first love is music. This is an authentic review and I feel like that12 year old that just got his first stereo so many years ago. Don’t cheap out on the proper wire gauge or any RCA cables you’ll regret it.
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Reviewed in the United States on November 22, 2025 by 64_GTO_LVR