As I recall these speakers have a substantial dip into low impedences and are fairly inefficient. A friend of mine used to sell them and they really need a very powerful high current SS amp, although you might try a very high powered tube amp (read expensive). I would think a minimum would be an amp that puts out 200w into 8ohms - 400w into 4ohms and it would be a godsend if it put out 800w into 2ohms. Of older amps which you might score that could drive these I think of the Threshold S500's which you usually see selling used for about $1500 or less. They are of about the same vintage as your speakers. Good luck, you picked a tough speaker.
amp for infiinity kappa 9
I looking for advice on which amp or amps to use. I'm in a transition from mid-FI to HI-FI. I want to build a system around the Infinity kappa 9s I just bought on e-bay for 800 dollars. I tried to drive the speakers on a yamaha m2 amp. No dice. It shuts down at moderate volume. Step 2 I tried an Adcom gfa 555. Cooked the amp in short time. I have heard that a tube pre amp is recommended because of the emit tweeters. I currently Use a Mcintosh MC2100. It will drive the speakers to its full power but falls short of what the speakers are capable of. Would another MC2100 work if i used the 2 for mono blocks 1 to each speaker or will I still come up short on power? The system I want to build will be very Basic. I have a Yamaha C2 pre-amp, dyno fm-3 tube tuner, Technics SM1200 tuntable, Nakamichi Dragon cassette deck, Akai GX 747 open reel tape deck,DBX 4bx dynamic range expander, and a Denon DCD 1500 cd player. I also have an ADC SS315 equalizer. Now I am aware that these are not the best componets to use but they are all that I have for now. Any and all advice on what to keep and what should go would be welcome. I listen to Blues and classic rock most of the time but sometimes classical and big band is a nice change. I dont even know how much I want to spend. I will just build the system slowly piece by piece and use some of what I have now. Most of this stuff was bought 20 years ago when I was in the service. Can anyone help this newbie out on my quest for HI-FI?
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- 29 posts total
- 29 posts total