erikm121 Posted December 6, 2005 Share Posted December 6, 2005 Still trying to figure what to buy as I work on my HT. Is the 1075 any good with the 7's? Is it enough power? I found a good deal on one and was wondering. Maybe I need to go with a 200w amp? I would rather not because of the price but.... Quote Link to comment Share on other sites More sharing options...
MrMcGoo Posted December 6, 2005 Share Posted December 6, 2005 Quality used amps are out there for the careful buyer at reasonable prices. You really do need a 200 wpc in a solid sate amp for RF-7s just to start to fully tap their potential. The smaller Rotel will work, but it will not have enough current capability to drive the RF-7s to their full potentail. The watts are ok, but only the most stout amps can handle the 2.8 ohm minimum impedance of the 7s. If the current isn't there when needed, frequency response will suffer due to voltage drop. Bill Quote Link to comment Share on other sites More sharing options...
ancientdude Posted December 6, 2005 Share Posted December 6, 2005 I think with a decent sub, the crossover can be set high enough so the impedence drop wont occur....is that not correct? I mean if you set the rf7's at a 80hz crossover, arent they just acting like regular speakers that only go down to that frequency? Quote Link to comment Share on other sites More sharing options...
MrMcGoo Posted December 6, 2005 Share Posted December 6, 2005 I have always run my RF-7s as small. At 80 Hz crossover, you still get signal as low as 40 Hz. The impedance dip is always there to some extent even when the speakers are set as small. The small setting reduces doppler distortion aka frequency modulation distortion. It also helps reduce bass cancellations and reduces power requirements somewhat. However, the mid-range improves all the way to 400 wpc with the speakers set to small. Many RF-7 users have reported similar information. It seems that the RF-7s love power, the more the better. Bill Quote Link to comment Share on other sites More sharing options...
JeffDurbin Posted December 7, 2005 Share Posted December 7, 2005 The Rotel 1075 lists for $999 and you can usually get it for $900 - $950. I have seen them go for $800 and above with a year or two on them. Even if you buy it and try it for a while you have virtually no downside. Quote Link to comment Share on other sites More sharing options...
westcott Posted December 7, 2005 Share Posted December 7, 2005 I agree with the Dr. My approach with a limited budget is choose a receiver that will serve you well as a preamp. One with all the bells and whistles you want and adequate power to get very satisfactory sound. Then, as your budget allows, add separate amplifier(s) later and use the receiver soley for signal processing and switching. Quote Link to comment Share on other sites More sharing options...
JeffDurbin Posted December 7, 2005 Share Posted December 7, 2005 I agree with the Dr. My approach with a limited budget is choose a receiver that will serve you well as a preamp. One with all the bells and whistles you want and adequate power to get very satisfactory sound. Then, as your budget allows, add separate amplifier(s) later and use the receiver soley for signal processing and switching. This is rather odd advice because no one has been chatting about receivers. The original post was about getting a Rotel RMB-1075 amp with about 120wpc or going for something like the RMB-1095 amp with 200wpc. Quote Link to comment Share on other sites More sharing options...
boston_klipsch Posted April 13, 2007 Share Posted April 13, 2007 I also in the same dilema ... right i'm using the Rotel 1056 receiver to run my 5.1 Reference 7 series for my HT Just wondering if the Rotel 1075 is enough power or should i wait and save up more money and go with the Rotel 1095 ? Quote Link to comment Share on other sites More sharing options...
bhenry Posted April 13, 2007 Share Posted April 13, 2007 I think Jeff woke-up on the wrong side of the bed. Mr.(or Mrs.) Westcott was just trying to be helpful. Man, can't we all just get along? Quote Link to comment Share on other sites More sharing options...
westcott Posted April 13, 2007 Share Posted April 13, 2007 I think Jeff woke-up on the wrong side of the bed. Mr.(or Mrs.) Westcott was just trying to be helpful. Man, can't we all just get along? Thanks bhenry. Everybody has their moments and I have tough skin. I made those comments because it is obvious money is an issue. If it were not, he would not have posed the question in the first place. Separates are great but power is not generally their biggest advantage. Signal isolation and larger components\heat sinks are. Most high quality receivers draw about as much power that is allowed after you figure in amp inefficiencies, limits of a single 15amp circuit, limits of a 15 amp wall socket, limits of wall wiring, the IEC limits of 12 amps for plugs used, etc. But, I don't want to bore anyone with simple details like that. The way amps are rated is a joke but if you believe you are going to get 200watts x 7 from your wall socket, go for it. Quote Link to comment Share on other sites More sharing options...
TheEAR Posted April 14, 2007 Share Posted April 14, 2007 As long as the room is not huge a solid honnest 70W/channel power amp will do great. RF7's are very efficient speakers and will mostly stay under the 20W bar even on louder passages. Seldom you need a real brute capable of 200-300W per channel,good to know there is plenty of gas in the tank so to speak. It should always be quality over quantity. Quote Link to comment Share on other sites More sharing options...
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