To be or not to be

[newtoallthis]

I recently purchased Polkaudio's RM6750 surround speakers along with a Yamaha HTR-6160 7.2 receiver. It sounds great but now it seems like a waste to have unused speaker outputs on the receiver. I want to add another subwoofer to the system and in order to do so I have to purchase another RM6750 to get the subwoofer because it's not sold separately. I could use 2 of the sats for the fronts...... OR I could use the centers for the fronts and a "CSi A4" for the center. Does anyone have any advice?
Keep in mind I'm on a budget or I wouldn't be here.

[Monster Jam]

On a budget and the audio quality you have already sounds great? And judging by your comment "I want to add another subwoofer" leads me to believe you already have a subwoofer.

My advice: Do nothing. Your already satisfied. At the very least, save the budgeted money for bigger and better upgrades down the road.

[Upstatemax]

What I would do if I were you...

I would return the RM6750, go to Crutchfield and get the RM85 or RM95 Speaker systems and you get a Polk PSW10 Sub for free, then you can add another PSW10 for $150 and then you have two subs.

Also, if you want to upgrade to a 7 channel speaker system later you can always buy more surrounds later... The RM7's are $160/pair, RM8's $250/pair.

So, if you wanted a full 7 channel system with two subs right now it could cost you as little as $810 (RM85 System W/ an extra pair of RM7 speakers) or as much as $1,000 (if you went with the RM95 system w/ an extra pair of RM8 speakers).

[newtoallthis]

I'm Canadian and that puts me at a disadvantage to price and accessability to take full advantage of Polkaudio speakers, shipping, duty and taxes eats up any savings and stores here don't have all polkaudio speakers that are available in the U.S.
Consider the 2nd subwoofer a given..... would the system honk if I used the 2 center speakers from the RM6750 as fronts and the CSi A4 as the center, or would it make a whole lot of difference if I used the 6 sats of the RM6740 and it's center "as is".