Klipsch RF7 Posted November 20, 2003 Share Posted November 20, 2003 Hi Guys, I currently have a Rotel RSX-1055 Reciever running the power to my Klipsch RF-3 II's that are using Monster Cable Z series Biwire. What i would like to know is that if i goto the RF-7's will i notice more fuller and richer sound? Also ive reading that the Klipsch like to have a good amp to power them, I was think of getting a nice 200wx2 Rotel RB-991 stereo 2channel amp to power them. And what is the crossover mod? Thanks Georg F. Handel Quote Link to comment Share on other sites More sharing options...
Johnny dB Posted November 21, 2003 Share Posted November 21, 2003 Going from RF3II to RF7 would be leaps forward. The local audio shop here had them setup and I was able to A/B them. No brainer if you have the extra loot go with the 7s! Quote Link to comment Share on other sites More sharing options...
whell Posted November 21, 2003 Share Posted November 21, 2003 Hey Georg: Dig that "Messiah" tune. I moved from the RF-3 to the RF-7 (edit). RF-3 is a great speaker for the price, the RF-7 moved you to another level. I don't think you'll get the most bang for the buck with your proposed choice of Rotel amp. More watts per channel is not what is critical for RF-7's. CLEAN amplification, especially at the amp's lower output levels matters most. I chose to drive my RF-7's with a Monarchy Audio SM-70 Pro. This amp only put out about 30 WPC, but is biased to class A operation, is built like a tank, and drives the RF-7's exceedingly well, even at higher volumes. But the key is the class A bias, which gives the RF-7's alot of clean amplification to work with. Many here on the forum choose low power tube amps for their Klipsch, and swear by the results. Quote Link to comment Share on other sites More sharing options...
Klipsch RF7 Posted November 21, 2003 Author Share Posted November 21, 2003 How much do those Monarchy AMPs run? I want nice 2channel stereo performance for Classical Also, how bout the Monarchy Audio SE-100 Class A Amplifiers? Quote Link to comment Share on other sites More sharing options...
love_hertz Posted November 21, 2003 Share Posted November 21, 2003 What's the size of your room? If you have a dorm sized room the rf-7s will do nothing for you probably will not notice the difference from the rf5 to the rf7s if ya have alot of room then consider the bigger speaker. Have you tried playing around with speaker placement? You will be surprized how much that changes a speakers sound. Rf7s are not cheap!!!!!! Quote Link to comment Share on other sites More sharing options...
Klipsch RF7 Posted November 21, 2003 Author Share Posted November 21, 2003 My room is about 8ft. high in the cieling, 8ft. wide and 20ft. long I would be selling the RF-3's and paying the diffrence of about $900 to get the RF-7's and nice 2 channel amp:) Quote Link to comment Share on other sites More sharing options...
whell Posted November 21, 2003 Share Posted November 21, 2003 I found my SM-70 Pro's used on Audiogon. They arrived here for about $500 including shipping, and were from an authorized dealer. The SE-100's are well reviewed, but are also Monoblock-only operation. The SM-70's perform well in stereo mode, and can be bridged for monoblock operation (this is supposed to be where the amp really shines). They are truly the best bang for the buck monoblocks you can buy. As a value for stereo, at their retail price of almost $1000, they are not much of a value. Used pricing, the value improves significantly. Don't know of too many Class A amps that sound as good for the price. As a mono-block, show me a pair of monoblocks that can be had used for under $1000 that outperform these. I'm VERY satisfied with the performance gains that I've experienced with the SM-70 Pro in stereo mode. Quote Link to comment Share on other sites More sharing options...
Klipsch RF7 Posted November 21, 2003 Author Share Posted November 21, 2003 What is the diffrence between monoblock and stereo? What is the advantage/disadvantage of either? Thanks Quote Link to comment Share on other sites More sharing options...
danechristian Posted November 21, 2003 Share Posted November 21, 2003 whell, just a question. i'm just curious if you can use the sm 70 pro as a monoblock without using the balanced input. can you just use the sm 70 pro as a mono block using the rca? anyway, im just curious. im looking forwazrd to this amp thats all. Quote Link to comment Share on other sites More sharing options...
Deang Posted November 21, 2003 Share Posted November 21, 2003 The important thing here is how far away you sit from the speakers. Also, do you typically sit in front of them while listening, or is this the kind of room where you tend to move around in while listening? I'm trying to figure out how much power you really need. Dean Quote Link to comment Share on other sites More sharing options...
Klipsch RF7 Posted November 21, 2003 Author Share Posted November 21, 2003 I have my speakers at one end of the room and i sit at the other end on my computer mostly, while i have the music playing:) And then if i watch a movie i sit about 6 feet from the speakers in the center in front of my Sony 65" HDTV. Quote Link to comment Share on other sites More sharing options...
whell Posted November 22, 2003 Share Posted November 22, 2003 Georg: Monoblock is a term used to describe an amplifier that is designed or set up to amplify a single stereo channel. Thus, you would need two monoblock amps to amplify two stereo channels. The SE 100 is designed for monoblock operation only. The SM-70's are switchable between stereo amd mono operation. The SM-70 does not need to be run in balanced mode to be used as a monoblock. However, the amp is said to offer its best performance when used as a fully balanced monoblock. Quote Link to comment Share on other sites More sharing options...
tillmbil Posted November 22, 2003 Share Posted November 22, 2003 The Yamaha M65, M80 play class A up to about 30 watts before switching to class a/b. I have two in my HT set up and really like them. However in class A mode, you have to press a button for this, they run incredibly hot. You would need some good air space to place these. Just an option. You can buy these on e-bay for around $300.00. Quote Link to comment Share on other sites More sharing options...
arj Posted November 22, 2003 Share Posted November 22, 2003 If you do not want tubes, Class A is the way to go..one model to come to mind is the Sugden A21 25W Class A amplifier. try to find it on Audiogon.(Was suggested this and I did hear this later...Very Smooth) I moved to a budget setup with the NAD 320BEE and am quite happywith it..bUt the Sugden sounds much better although only 25WpCH Quote Link to comment Share on other sites More sharing options...
leok Posted November 22, 2003 Share Posted November 22, 2003 I'll add a vote for class A ss if you don't use tubes. Also, 25 Watts will deliver 114dB at 1M with those RF-7s. That'll cause plenty of hearing damage in the room you described. Leo Quote Link to comment Share on other sites More sharing options...
Parrot Posted November 22, 2003 Share Posted November 22, 2003 ---------------- On 11/22/2003 10:11:07 AM leok wrote: I'll add a vote for class A ss if you don't use tubes. Also, 25 Watts will deliver 114dB at 1M with those RF-7s. That'll cause plenty of hearing damage in the room you described. ---------------- 114dB would indeed be dangerous listening to all day. But for milliseconds here and there it is not going to hurt anything. 25 watts or whatever amount of power in that range is not so that you can run your amp all day putting out 25 watts. It's so that when the music requires the power to handle instantaneous peaks, the amp can do so without clipping. Quote Link to comment Share on other sites More sharing options...
leok Posted November 22, 2003 Share Posted November 22, 2003 What Paul said is pretty much what I meant. Maybe the way he said it is easier to understand. I tend to listen at lower avarage levels than many and so find 3.5 Watts, for peaks, generally does the trick and 8 Watts supplies all the reserve I ever need for "loud." Less than 4 X as loud as my max requirement plus a little reserve gets you up to that 25 Watts. What you do risk with higher power amps is distortion and doise that begins to creep into the lower power range. So, If you go for a higher power amp, especially one that is not clas A, give it a good audition. Listen for harshness and smeared or accentuated sibilances (sounds such as "S" "t" "sh"). Leo Quote Link to comment Share on other sites More sharing options...
Parrot Posted November 22, 2003 Share Posted November 22, 2003 Leo, I just didn't want your post to scare the guy into thinking it would be dangerous to his hearing to have a 25 watt amp. Quote Link to comment Share on other sites More sharing options...
Klipsch RF7 Posted November 22, 2003 Author Share Posted November 22, 2003 Hmmm, so this Sugden A21 25W Class A is the way to go huh? Quote Link to comment Share on other sites More sharing options...
Parrot Posted November 22, 2003 Share Posted November 22, 2003 Mr. Handel, There is no way to know for sure if you'll like it until you give it a listen. If you get a good deal on it and don't like it, you can resell it. There are probably hundreds of good choices. Quote Link to comment Share on other sites More sharing options...
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