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Help power pair of Infinity Kappa 9's please

Hi all!
I have a pair of Infinity Kappa 9's:
Nominal Impedance: 4 to 6 ohm
Power Rating: 60-340 watts RMS
Efficiency: 102 dB SPL @1 watt, 1 meter
Crossover Frequencies: 80Hz, 800Hz, 4500Hz
Frequency Response: 29Hz-45kHz +/-3dB
Physical Attributes:
1x - SEMIT Supertweeter
1x - EMIT Tweeter
1x - 3" Edgewound Voice Coil Polydome Midrange Driver
1x - 5" Polypropylene/graphite Diaphram Polygraph
2x - 12" Cast Frame , L/C Tuned Woofers
Dimensions: 59.5"H x 21.5"W" x 8"D

My room is 12'x12', I have $2500 budget and would like to play music off my computer. I need amp(s), a preamp, and a DAC i guess (is the DAC necessary at my low of a budget range?). I know my budget is low so I will be shopping for very used/old equipment. If anyone has any experience, suggestions, or words of wisdom, they would be very much so appreciated.
Thanks,
JT
jtiesel2
timlub
1,649 posts
 
I copied this from Audio Review. I hope this helps.
He drives them with an Upper end Hafler.

I am still using them in my living room, in a stereo system, fed with a Hafler XL-600 or (alternatively) a Hafler 9500 Series THX Power Amplifier and a Classe CP-50 stereo preamplifier. Sources are: a Sony SCSD-XA777ES SACD/CD player and a VPI 19W Jr turntable with an Alphason HR-100 Tone Arm and an Ortofon Cartridge.
driver's avatar
driver
746 posts
 
Hi Timlub-my previous comment was directed towards OP. IMO, he did not appreciate the "experience, suggestions, or words of wisdom", even though they were solicited.

Kind of surprising for a first time poster.
vinw
67 posts
 
I think Bongiorno's Ampzilla would be a good candidate to drive those kappas.
magfan
1,583 posts
 
Perhaps one of the Bel Canto integrateds......NEW.
Get the one with the USB DAC.

A PSAudion GCC series integrated of 100, 250 or 500 / side with something like a DACMagic. ??????? I guarantee the 250 watt ICE module'd GCC would work.

Is there any phase data on the Kappa 9?

I have HEARD that the EMIT / SEMIT type driver doesn't like distortion or overload. Is this true?

If true, I'd sell 'em and get pair of Cerwin Vega. If people are partying 'pretty loud' I doubt anyone is in the mood for nuanced presentation of 'the sounds'.
The Klipsh? Them too!

If the 'system' is now up and running, what exactly is wrong with it? Last amp die?
timlub
1,649 posts
 
Thanks Driver, I appreciate it. I understand, I'm getting old, I have been in or around this business for 32 years.
Sometimes I bite a bit too fast in my old age.
As far as the Ampzilla above? As I stated in other area's, I used to sell Sumo. Jim B. has told me that the Andromeda is nearly an arch welder, that it will run nearly to a dead short. I've never tested the Ampzilla, but I hear that it sounds a bit better than the Andromeda, but a bit more tempermental. I'd be surprised if it would run the Kappa's if you ran it hard at all.
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