rockbobmel Posted June 8, 2010 Share Posted June 8, 2010 Well, I finally found an Arcam FMJ P-25 (3 channel) amp. I already have a P-25 2 channel, so I traded off my RB- 1080. So now I have 5x100wpc exact same amplification. I know I am going from 200wpc to 100wpc, but the Arcam sounds sweeter (I tried mt P-25 when my Rotel was out.) I read somewhere that the P-25 can put out 170wpc for 4 ohm peaks. How critical is the RF-7's 2 ohm dip? Will the Arcam be safe with them? I really don't get the fluxuating ohm thing. I also am thinking of bi-amping the tweeters with a few spare channels- Rotel 65wpc (RB-976) This amp has level controls on the front so I could adjust to taste. Any opinions? Advice? Thanks, Bob Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted June 9, 2010 Share Posted June 9, 2010 Typically external amps from great companies like Arcam are built to handle more difficult speakers than a receiver ever would be. As far as the fluctuating ohm thing, a speaker's ohm resistance varies with different frequencies. A speaker could have a 2.8 ohm resistance at 250Hz and then have a 20 ohm resistance at 1.5kHz. Quote Link to comment Share on other sites More sharing options...
rockbobmel Posted June 17, 2010 Author Share Posted June 17, 2010 I also am thinking of bi-amping the tweeters with a few spare channels- Rotel 65wpc (RB-976) This amp has level controls on the front so I could adjust to taste. What do you think of this idea. Are they compatible?? Quote Link to comment Share on other sites More sharing options...
RockOn4Klipsch Posted June 19, 2010 Share Posted June 19, 2010 Don't bother with "bi-amping" it's only a passive way of bi-amping. Search the forums for bi-amping you'll learn more there. If you do passive bi-amp you should use identical amps. Quote Link to comment Share on other sites More sharing options...
Olorin Posted June 19, 2010 Share Posted June 19, 2010 I also am thinking of bi-amping the tweeters with a few spare channels- Rotel 65wpc (RB-976) This amp has level controls on the front so I could adjust to taste. What do you think of this idea. Are they compatible?? My advice is to try it and see if you like it! Quote Link to comment Share on other sites More sharing options...
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