Originally Posted by Hurbodog
I read on the internet ( http://home-subwoofers-review.toptenreviews.com/bic-america-formula-series-review.html
) that the BIC f12 is a better sub then the KLipsch.
Considering my setup (have a polk Rti70 front a fx1000 surround a polk rt3000 (without the subs) as surround back a polk cs400 as center and a polk psw450.
(But looking forward for upgrading to an setup a 7.2. HT-System.), what do you think I should choose.
It doesn't matter what other stuff you have in the realm of mainspeakers. You don't have to match sub brand to speakers. IE you can have Polk mainspeaker towers and use any vendor's sub you want, and they will play nice together. The same does not apply for mixing subs, but primarily because of port tunes. I'll describe that below.
funny you should say you've read that the BIC F12 is better than the Klipsch RW-12D. Where did you read that? What proof did that author have?
I've measured both the Bic F12 and the Klipsch RW-12D and whoever said the BIC is better is wrong on most every count. The BIC F12 represents a good value at the <$200 range. It's a great sub for the price - but it will fade off hard, just like the Energy at a smidge over 30hz.
I've already told you which direction I would choose. Someone else can give you other advice if you don't like mine.
. I'm not discounting other's opinions, there are lots of knowledgeable opinions from experienced members of this forum, but for the $300 sale price that is on for the next couple days ---- I will only recommend one sub at or below $300.
If the Klipsch was selling for $450 or $500 it has some competition to consider. At $300 there is no competition that I'm aware of outside of some other unique sale, or the used market.
Your polk sub most likely rolls off around 30 hz as well if I had to guess, since I don't see any real world measurements. The rub in mixing the klipsch and the polk is that a subwoofer goes out of phase below it's port tune, and since your polk will likely be tuned higher than this klipsch it will kill the klipschs performance from the polk port tune down to the klipsch port tune. Meaning the polk will negate some of the Klipschs sound down low if they are playing together. This means that if you play them both together the frequencies between 20hz and 30hz will most likely sound worse than if you simply played the klipsch sub by itself. Anything above around 30hz will sound better with both of them together. This is tried and true science. You can ignore the way it works, but it isn't to your benefit to have ported subs that don't have matching port tunes. Can you sell your current polk sub and purchase two Klipsch subs with the extra money?
If you are perfectly happy with your current polk sub, but just want more volume, maybe consider just buying a second identical polk sub.