Hello, has anyone had experience pairing a SE84UFO with the Klipsch RP600M? The spec sheet states 96 db efficiency, but reviews indicate a real world efficiency of around 90 db. Room size would be small/medium. Wondering if they would be efficient enough with a single SE84UFO amp. I am hoping to be able to play them fairly loud. Thanks!

I’ve got the SE84UFO powering some Klipsch RB-61 IIs, which are also an earlier version of the RP-600m speakers, and it gets plenty loud.  In my small 11x11 room, they’re a fantastic pair.  I did try them in a larger 13x16 living room, and they played plenty loud there, so you should have no problems.  

I am thinking of picking up a pair of RP-600m’s and doing the GR Research mod on them - definitely something you might consider, as well.

Thanks for the heads up!  For my use in the 11x11 room, I’m certain they would still be plenty loud.  The other speakers I have on hand are vintage JBL L40s, and are about 88dB efficient.  They need some love, but got plenty loud with the Zen.

Paul,

First off welcome to the forum.  Unfortunately I have  no real world experiences with that amp or those speakers.  

One question I have is what is your definition of pretty loud?  Everybody has a difference of opinion on what loudness constitutes since we all hear a bit differently.  75 dB may be on the quiet side to you, and loud to others.  If you can… download a decibel meter app on your phone and take some dB readings, and then report back.  

Also...what type of music do you normally listen to...classical, jazz, rock, instrumental, opera etc etc, and how loud you like each of those genres.  This will help with others who reply back with a more accurate answer.  

When I originally placed my order the for the SE84UFO25, I was pairing it with the Decware ERR speakers, which are about 90 dB efficient.  After much debate with my room size, and how loud I like to listen to music, it was determined that not only did my speakers need more watts to fully shine, I would not have the headroom that I was looking for when I wanted to crank things up.  With the advice of guys like Will, Lon, HockessinKid, Palamino, and others, and then a final talk with Steve, I decided to change my order to the Torii MKIV, which I will take delivery on Friday.  👏👏👏.

I am not suggesting to change your order, but just trying to help you hone in more closely on your scenario, and get the necessary information you need to make an educated decision.   I hope this helps, and good luck.

Dom

I run them with a clone I built. They sound great. Play with plenty of volume. Placement matters, and if you are careful, the bass is decent. I use them relatively near field. I put a pair of ATS panels behind each one, which really helped the bass. (a foot from rear wall) I found that using 6P15 output tubes really dialed in the treble. Check out the Stereophile review. They boogie and are a lot of fun for the money.

Hello again and thank you to all who have responded. Thank you also for the warm welcome. About 15-20 years ago, I was a regular here. A bit of history, at one time, I owned a Zen Select and loved it. I did not have very efficient speakers, so I order a Decware Integrated. I eventually moved to more powerful amps as I have a love affair with Martin Logan's and Maggies. I still love what that type of setup can do, but I am looking to create a second system with a SE84UFO and efficient speakers. Most likely will go with eventually move to higher quality speakers than the RP600M's but they are an affordable way to start. I downloaded the decibel meter and determined that I sometimes listen at levels that average 84 db during loud sustained sections. I listen mostly to instrumental music. Lots over other genre with the notable exception of hard rock. For those who may be interested, Slickdeals.net has a link to the RP600M for $355/pair, (and other models too!).

From what I’ve read, the GR mod to the RP600M’s is not that exciting.

For whatever reason, Klipsch designed those speakers with that weird dip from 1kHz-3kHz. If you want speakers without that, then there are literally thousands of others to choose from. By the time you buy the speakers and buy the mod, you could get into a pair of Zu’s.

Thanks Bobc! Those numbers sound encouraging. My speakers are about 8' apart and I listen about 12' away. I think I am going to pull the trigger and buy the RP600M's. I can certainly be happy  with 80 db if that is all I get.

I will need to find another set of efficient speakers that are affordable and sound awesome.

The Caintuck Audio Lii 15E is an efficient, 15" open baffle, full range speaker that is both affordable and awesome sounding. I highly recommend it. A number of Decware amp owners have this speaker.

http://www.caintuckaudio.com/Lii_15.html