That's fine.
That's very nice.
Fronts 2 klipsch senergy B3's
I agree with BSA, move those to the back and put the Reference up front. It costs nothing and they should match better with the Premiere center speaker.
surrounds 2 klipsch reference 5 1/4 bookshelves
Leave these here.
backs 2 klipsch reference 5 1/4 bookshelves
Move to front, see above.
everything i have has been acquired randomly over the years
I am much the same. You're not doing shabby so far.
i am aware i am under powering my center speaker
No you aren't. That speaker is tremendously efficient and I can't imagine you've ever under powered it unless you had it hooked up to a 2 watt integrated circuit chip amplifier.
but what can i do or add to improve what i already have and to make sure im not under powering my speakers?
Well the subwoofer recommendations aren't a bad place to start, but that only gets you so far. Right now you have an awesome center speaker and a bunch of very small bookshelf speakers that have limitations that just cannot be fixed by adding more or better subwoofers.
im willing to start from scratch at this point. it is loud but not as loud as id like it to be.
I don't think you need to start from scratch. You have the basis of a solid sound system. A budget would help.
Lol I did forget to mention a subwoofer but I do have a 12inch Klipsch smh
It's decent but I want something better
What's the model number of this subwoofer?
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OK. So here's my suggestion (sans the subwoofer recommendations, I'll let the rest of the forum advise you there and believe me, they will advise you). Take a look at Klipsch's Premiere line of towers and see what fits your budget. Even their smaller tower with 2 5.25" woofers and the nice horn for $600 a pair (on sale right now) will bring your front stage to life. Dynamics is what you're currently missing and the front 3 speakers play a huge part in the delivery of dynamics. The surrounds only never need to be big dynamic wielding speakers when you're doing multichannel music, and even then it's not absolutely necessary.
http://www.klipsch.com/floorstanding-speakers