Best way to improve my Theater with $1500.00

I'm about 100% certain that all of your guests will mostly be WOWED by a huge HD front projection screen image, over any upgrade you could make to your audio system!
There's simply no replacement for the immersive impact that a large screen experience offers!
If it's me, I'd ditch the 60", and you can get STUNNING huge screen, ulta high quality imagery, going JVC projector, from any of the following - HD350/RS10/RS250/RS15/RS20/RS25/HD750/HD550/HD950/X3/X30/RS40/RS45/RS35.
ALL OF THE ABOVE ARE CAPABLE OF DARN NEAR WORLD CLASS 1080P IMMAGES OFF A STANDARD WHITE - even cheapo - projection screen! (dark room, necessitated, in any case though - uness you got light rejection screen for bigger budget).
I dare you to get more "WOW" out of your system than upgrading to quality front projection!
That's just my thoughts .. but then I have been in and out of high end audio/video for 18 years. Now, sound isn't a huge priority, as is video. But that's me.
If sound is going to be most important for you right now, you're going to find you get most upgrade from speakers!
Better, more effective home theater speakers are going to have the most dramatic improvement in sound for you, yes.
You'll spend more on higher end music capable speakers, that also do super dynamic, coherent, transparent, effective HT speakers, but they're out there.
Look through your Stereophile and Ultimate Home Theater, even HT magazine recommended components and reviews for high end speakers that double for HT duties, effectively, and that should help.
Sure,..stay with your B&K (I'd upgrade if no current HD codecs or HDMI switching though), and focus on loudspeakers for audio, yes. If you must do full range loudspeakers for 2 channel, etc, then look into ultra high efficiency, Dappolito, multi-woofer/tweeter designs for strongly reinforced sound propegation, and solid soundstage, speed of and impact of mid/hi freq sound, with good focus (especailly vertically) and coherence. Powered woofers help GEATLY for dynamics, and horns always have lots of pressence, and focus, and strong dynamics and efficiency. So consider.
I would stay away from more delicate, open, single mid-woof/tweeter traditional stereo speakers for all out dedicated movie speakers. You'll find they're the opposite of what a good dynamic, hard hitting movie theater loudspeaker - with lots of presence (not laid back) - has to offer! So choose wisely.
Yep, first front pj upgrade, then consider maybe high end dedicated movie monitors, and mate quality subwoofers with em!
There's a ton of monitor system upgrades you could have, USED, for $1500 invest, sure!
Hope this helps

No, not what was intended. I was stating that, if he did need high end 2 channel music duties, and wanted to stay same speakers as HT speaker, "combo" system (I'm assuming his dedicated theater room was for "all out, dedicated theater"- could be wrong), then he'd likely have to pay-up!
Yes, you can get a darn good, high out-put, quality, effective, and yet budget type of home theater speaker system, which fills a large space with potent theater sound, yes! I am assuming that his love of DCM's, means he's into this stuff a bit. I also assumed he was doing double duty for music and movies with the same system.
Let me clarify a bit, you can get a very strong sounding theater presentation from some innexpensive Klipsch Horns in that eventual dedicated space, I'm certain! I would also suggest that you would get a stronger offering for HT duties from that same Klipsch system, then your DCM's! They look like music speakers to me.
Of course, if you stay separate music/movie systems, and you like female vocals, light chamber music, modest level rock/pop, jazz, blues, etc, then most any higher ambition audiophile offering can do pretty darn nice sounding music, from a speaker. I think many here know that.
Thiels, B&W's, higher Paradigms n NHT's, Snells, Dyn's, you name it! Much nice sounding music speakers in these, and similar line-ups. However, throw a full THX system effort into a "request", and now what does what? -and in a large room, no less?! It's all I'm saying...n to each his own.
The age old sying, "a good speaker is a good speaker", just doesn't equate ..that is unless you come to the realization that most commercial home audio speakers aren't adequate to do full justice to a lot of high demand source material out there, without coming apart at the seams, n flattening out when you put the gutts to em! ..and movie sountracks are murder on a lot of gear out there.
You have choices...chose wisely

If anyone here like's to embrace the Bose Cube for their HT needs. I say, "God Bless em!"

"Thanks Tim. Trust me, I am very careful about the money I spend. That is why I am looking for advise . I want to make sure I spend my money wisely."
(Dcmlover)

Albert Einstein (kinda smart guy -had a few answers) once said something like: -"It wasn't that I was smarter that I learned these things, but that I merely stayed with the problem longer"
-"I have no special talents, only that I am passionately curious"

If you really wan't to know for yourself, YOU'RE GUNNA HAVE TO PUT IN THE TIME AND EXPERIENCE! Otherwise, you'll settle for what someone else thinks is right for you. You'll get out of it what you put into it. For those of us, it's a Hobby.