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
One thing I left out went from 10:30 to 11:30 but the night I blew the 7000 I was out past 2pm.
I said I’d never run that hard but geez the Kappa’s make me do it.
i got gobs of will power but the Kappa’s say turn the knob...
Pick up second-hand 4 Crown XLS 1500 Class D Pro Amp. I can drive my Kappa 8’s with those all day and night without any problems and they sound very tube-like. They work on the 9’s as well. Don’t even get hot.

Pure power is what the Kappas need. And when they get that power all the drivers vanish! It sounds like the air is vibrating itself, like the gentle winds and sudden gusts of Autum. They can sound a lot like electrostatics. And you can get very tuneful, fast, authoritative stereo bass that would put any lone subwoofer to shame! It’s incredible! 

You could probably also use two Carver Signature Sunfires—one for treble and mids and one for bass. I believe that is called vertical bi-amping. I have one Signature Sunfire that I plug in as my back up amp. It is an arch welder. An audio bazooka!

In the last two weeks my Kappa 8’s appear to have trashed two BAT power amps and one Spectron Musician. I am not happy.

I love my 8’s and 7’s. The 9’s (I have too) their physical size and driver height is not suitable for most rooms and most homes do not have the right power runs to power amplifiers that can drive them.

Maybe it’s time to go back to JBL’s?
If you are looking for holographic spatial cues and full frequency extension, what speakers are an easier to drive ‘upgrade’ from the Kappa 8’s?


Not to be snarky, but a lot.  Vandersteen, Vortex Acoustics by Von Schweikert, Ascend Acoutics, Philharmonicaudio, magnepans with a subwoofer, and Salk Sound are a few that pop to mind immediately. There are dozens if not hundreds of options that will be easier to drive and sound as good, if not better.