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?
coman61

Showing 8 responses by coman61

Well allrighty then!! I guess I will have seek out ampzilla to drive these bad boys. I'm not a quiter I will get the job done. Thanks for all the input. Stay tuned and I'll let you all know how this works out. Sean putting in a dedicated circuit will not be so bad because I'm remodeling my listening room. Thinking about getting a big Mcintosh. Anyone had any experence with the Bryston 4b? Also seen some good prices on aragon palladiums. If I find a good deal on a Threhold 500s maybe I'll give it a try. Thanks again everone.
Nice systm mitch I'll keep the carvers in mind. Did you need a dedicated circuit to all amps?

Sean I will also keep the sunfires in mind but I would like to find them with the apogee mods already done. Its bad enough I have to look at the Kappas now and just barely be able to drive them. antisapation is killing me.
Well the latest amp has not proven to be a winner either! I just added a McIntosh MC300 to list of ineffective amps for the big Kappas. I'm not sure if I will pursue this much futher. It might be time to find more efficent speakers. Maybe just add a subwoofer till I run across the right deal on some serious mono blocks. "SIGH" WHAT A PAIN THESE SPEAKERS ARE TURNNING OUT TO BE!!!!
Sorry Mitch I'm in Ohio. I'm not sure if I'm gong to unload them just Yet. For now I'm just going to BI-AMP them with the Macs. They do sound nice just lacking bass. I just can't believe that the MC300 can't push them woofs. If I sell them I'll be sure to let you know. Finding a replacment is the key now that I have some decent size amps.
Bemopti123 Thats a price I can live with. I'll give one a try. I might have to hock some more gear.
I have considered that the amps could be starving for power but I don't think this is the case. When I tried running the Adcom it was definitly the case I could see the lights dimming with the music. That was not true with the macs. It must have something to do with the audioformers. If anyone knows for sure please feel free to chime in.
AHHH YES MUSIC SWEET MUSIC!
Well I finally got the Kappa 9s singing. Just got a new pair of Aragon Palladium 1ks. They drive the speakers with power to spare. Thanks for the tip Bemoptil23. I'm sure all amps suggested would have done the job but the Aragons were affordable right here on the gon. I must say that these amps are very aggressive sounding compared the the Mcintoshs that I was using. Thats good and bad. The Mcs sounded more mellow and tube like but just didn't have the oomph to drive the Kappas. The Aragons are fast and detailed and take all the harshness out of the Emit tweeters. I'm happy now that I have good starting point to start building a new system. Now I need to start looking for a new pre amp amd cd player. Thanks all of you for your advice on driving the Kappas. I have the audio bug now stay tuned for futher updates on my quest for HI END audio

coman61
The speakers have been tamed by the aragons. I don't think there is any damage to the speakers. They truly are that difficult to drive. The man I bought these speakers from was an older guy who couldn't have wooped on them. I know this because He was using a 200 WPC Mcintosh, don't remember the model but asked if I wanted to buy it a month ago. He also had the foam surrouds replaced just before selling them to me. This is also true because those woofers are so stiff it takes alot to get them moving. With all that being said I have to agree with most of you I should sell them because they are not the greatest sounding speaker that I have ever come across. They are however the best sounding speaker that I have owned personally. The mids and tweets are great especially with female vocals. I really can't fault the speakers or the amps just yet as they are not in an ideal envierment. The amps will need a dedicated circuit as Sean Has stated before. The room is also less then disirable. Its to small and has no treatments and I really need to get a better pre amp. All this will be addressed this summer when I rebuilld my family room. I might even do something real stupid and go for a HT in that room. At that point I will most likely have to move this thread over to the HT section for the advice of them guru's. I must say I have learned alot here in a short time and thank everyone for the great pointers. When I get my room finished I will better be able to determin If the big Kappas should stay or go. As for now I just hope that the newly refoamed woofers loosen up or a sub is going to be a must.