Re: Would a subwoofer help a pair of sierra1s sound fuller?
I think adding a sub will give you a nice improvement in the overall sound. In my opinion the Sierras sound better with a sub. It gives the bass more authority and also relieves the amp of the burden of producing those low frequencies. I have my Sierra's crossed over at 60 hz and find I can play them louder this way. Subs are better equipped to produce bass under 60 hz. If you're budget is really tight you may want to consider an HSU STF-2 as they cost $100 cheaper than the svs you are looking at. Plus they are on sale at the moment. The main difference is that the svs is a sealed12'' while the hsu is a ported 10''. I do find the STF-2 to be very capable and think it is quite musical for a ported sub.
Andrew
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TV: Panasonic VIERA TC-P55ST30 55-Inch 1080p 3D Plasma
Receiver: Onkyo TX-SR706, Emotiva XPA-5 Gen 2, Blu Ray: Sony BDP-N460
Fronts/Center/Surrounds: Sierra Towers Nrt, Sierra-1, HTM-200
Sub: HSU VTF-3 MK-4