The mb for my router box is refusing to power up anymore on a known good PS and ATX switch. I want to spend as little money as possible, since it's only going to be a router/firewall. That means I'd like to use my existing PC133 sdram.
I'd like to pick it up for something the neighborhood of...
If you really want to get subwoofage for cheap, you can also try to do a DIY tube sub built from a sonotube-type concrete form. They are big, ugly, but cheap. You could use your old receiver to power it too. Of course, you'd need to feet it a signal with a low-pass filter on it so that it...
http://www.av123.com/products_product.php?section=subwoofers&product=12.1
The X-sub was co-winner with the X-LS for Good Sound's product of the year.
http://www.goodsound.com/equipment/av123_xls_xsub.htm
The low level connection is more standard nowadays, and since the receiver has it, why not use it? The high level inputs are really only for two-channel old-school folks.
If you're using the low-level input, I'd go with the Bash class-d amp. (Part Number 300-750)
They are very cool...
Are you going to run the subwoofer in line with the speakers via the high level inputs, or will you be using a low-level signal plugged into the RCA jacks?
Why buy 7 speakers when you only need 3? You want a better front soundstage (left, center, right) but you can still use your existing speakers for subwoofer and surround duty to help your budget go further. It might not be as simple as with some sets, because the z-3 is hardwired, but it can...