Have you listened to Vienna Acoustics? They are usually demo'd at the Magnolia section of Bestbuy. Those are known to be warm speakers.
Generally, any speaker that you want a "warm sound" to, if you look at the Anechoic FR measurements, they will have a broad 3-6dB dip from 1khz-6khz, and come back up for 10khz for "air and sparkle". Since the human ears are most sensitive to 2-4khz, psychoacoustically, when this portion of the spectrum is subdued compared to the rest of the spectrum, the sound will have a more laid back sound. Additionally, there will be a broad low-level peak from 800hz down to about 80hz. This gives way to a more fatter sound. Acoustic guitars seem to have a bigger guitar body than they normally do, kick drum seems to hit more solid than usual.
"Forward" speakers typically have a broad low-level peak around the "presence region" which I believe is 4-9khz.
At least that is what I have found for my ears during my auditioning days.
I found that i did not like speakers that were "warm" as per my description above. At first they sounded nice, but after 20 minutes, they started getting "soupy" and ho-hum.
Speakers that were slightly "forward", I was ok with, although after 60 minutes of listening, kinda started getting my ears tired.
Bright speakers (tended to have peaks or emphasis in 10khz-16khz) killed my ears within 10 minutes. At very first, they are like "wow, never heard so much detail in the cymbals and strumming/picking before", but after a few minutes, its like "MY EARS BLEED".
What does this mumbo jumbo mean? I think you should go to Magnolia at Bestbuy (lacking any real speaker dealers in this terrible economy, for example), and test out the Vienna acoustics next to their polk, Def. Tech., and other offerings just to "make sure" you really want "warm" speakers. Or maybe, perhaps, you just want a not-bright speaker. Or maybe you want a not-forward speaker. These are important distinctions that you need to know, and this can only be had by listening and comparing specs from stereophile or other publications like that, to draw your own basic ideas on what you like to hear. Of course, when you are confused as to a possible contradiction in your listening to speakers and notes you take down and how they measure on FR, then you will start to look towards things like how disperse the speakers output their sound, toe-in angle, height of tweeters, etc.
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This hobby keeps going and going...