KEF LS50 Need Help


I have been auditioning the KEF LS50 for a week now. Very nice speaker overall and clearly understand why it is so well reviewed. The speaker sounded very poor out of the box and loosened up after about 2 hours and finally started to sing. I have 25+ hours on them now (of course KEF says 100-200 needed????).

The bottom line for me is that they do not have enough bottom end for my taste, and the vocals an high pitch violin, etc. can seem too loud and a bit harsh at times. My gut feeling is the speakers will not change much more from now? This is a reference type speaker in my opinion. I guess there is always a thin line between perfect detail and rich soulful sound. I am looking for both (like most people) with a slant towards the rich and soulful side for me. I am upgrading my dedicated listening system from Klipsch KG4. (not a bad speaker by the way, different league of course)

I am considering two options going forward. ($3,000 budget max and prefer closer to $2,000) I kinda knew I would need a sub when I decided to try the LS50.

1.Try a sub (and soon) before my return window expires. SVS SB it most probable to due generous demo policy. The KEF R400 would be nice to try but cost more than the speakers?? I would consider it if gave me the results I want.

2.Return LS50 and find a suitable floor standing that will not need a sub, like Salk Song Tower ($160 shipping each way- bummer), or possibly KEF R line, or other??

I guess I am hoping for some input from those with similar experiences and the choices you ended up making.

My set-up
McIntosh MC 2150 solid state
Parasound Halo P5 pre-amp
Airport express via Toslink to Preamp DAC
Rotel CD player via digital coax to Preamp DAC

I currently use Tributary A1 Silver RCA cables and Tributary 12AWG Speaker wires. Blue jeans digital cables 14 x 19 room carpeted 75% or the area
torxx
Torxx, there are all kinds of things that a good subwoofer (or pair) will do for a stereo setup that isn't intuitive. You may find that the highs seem to mellow out with a sub because the tonal balance and the pressurization of the room change.

And here's another one: If you get a sub set up correctly, the most immediate thing you'll notice isn't extra bass, it'll be … imaging! Something about getting true fundamentals in sync with what the monitors are doing that makes the imaging and soundstage "pop."

I don't get why you won't give your speakers the 100+ hours they need. If you have a 30-day eval period, that's 720 hours total. You could have had 336 hours on these speakers in 2 weeks if you'd just set up an FM tuner or put iTunes or a CD player on infinite repeat. It doesn't have to be loud, and if you want to make the sound less intrusive, wire the speakers out of phase facing each other and throw a blanket over them. I consider initial speaker break-in a "mission from God," because I can't seriously listen to, enjoy, tune, or do final placement and setup until that is largely completed first. Energy consumption under these circumstances wouldn't show up on your electric bill with most amplifiers.

And finally, I have successfully integrated several subwoofers into various systems, both in my own house (5 setups) and two more at a neighbor's house. If I want to get a really good sub integration, it may take me 1-4 hours with the help of the frequency generator warble tones on the Stereophile Test CD 2.

But it's well worth it. It's basically spending ONE Saturday morning or afternoon dialing in the crossover point, phase, and volume, playing the test tones, and playing musical tracks you're familiar with. In return, you get more realistic tonal balance, bigger dynamic range, better in-room power response, more realistic soundstage and imaging, and more musical satisfaction from hearing more of the notes, plus the room energy of the original recording.

Isn't that worth a 4-hour investment?
I've heard your speakers on 2 occasions at shows and thought that they were extraordinarily good. And this was in hotel rooms with suboptimal set up. I do not like harsh highs and did not hear that characteristic from the LS50s. Which leads me to believe that the problem with harsh highs are
1- The speaker supports (extremely important) or position (aimed straight ahead? toed in to your listening position?) in the room.
2-The room (glass, hard walls, location of speakers in the room)
3-Break in time.

Move them around the room just a bit and you will be surprised at how the sound changes. After you position them to eliminate foreign contribution to harsh highs-- add a rel and you will be very happy.
From your description of the sound you are looking for I recomend Vienna Acoustics. At the price range you mentioned you can get a pair of Mozart or used Bethoveen.
I would concur that silver cables can have an effect, making the sound bright or overly extending the higher frequencies. Can you experiment swapping out the silver IC's? I'd also suggest giving the Kef's more time to break in, 25 hours may not be enough yet.
update:
The LS50 have running nonstop for the past few days and they have definitely mellowed nicely. I think the harshness was a result of more break-in time needed, as is now, almsot a non issue for me. I am 95% sure I will be ordering a sub in the next few days. Bottom line, these are nice speakers, and well-reviewed. I need to give them a fair chance with a sub.
The Silver in the RCA connects is something I plan to experiment with, but, do not have an easy way to compare cables. I like the price of Blue Jeans Cable..