Originally Posted by gnagel
I moved the subwoofer away from the far corner of the room. There was not a noticeable difference.
Yeah, you gotta get it 12 to 18 inches at least away from the walls to really notice any difference. I know, in this size room you can't really move it too much or it'll be sitting on your lap.
Originally Posted by gnagel
Not knowing much about any of this, I thought that these speakers would be perfect (in terms of crossover) for my receiver. I noticed that the speakers have a frequency response of 90Hz to 22kHz. So, I thought that the speakers would "handle" anything from 90Hz and above while the sub would take care of anything 90Hz and below. Since my receiver has a fixed crossover of 90Hz, it seemed like the perfect match--again, only in terms of crossover.
The crossover isn't a brick wall. At 90hz and down your main speakers get their volume reduced by a certain number of decibles per octave. How steep that curve is depends on the type of crossover. Same thing with the sub. At 90hz and above the subs output is reduced. The two dovetail together to (hopefully) produce a smooth transition.
With the way you're setup right now you should turn the crossover settings on your sub all the way up. If you set it at 90hz you'll be applying two filters to your 90hz and up range on the sub. Your receiver is already lowering the subs output above 90hz, so you don't want the sub to do it as well. That will result in a really steep dropoff that leaves a hole in the 90hz+ range. Your sub may also have an input on the back marked Xover. If you plug the cable into that it will bypass the subs built in crossover.
Alternately you could disable the receiver's crossover entirely. Since your speakers start rolling off below 90 hz anyway you don't really need it. If you have this option set the receiver's bass output to "both", meaning it sends full range sound to your main speakers and the bass portion to the sub as well. Even in this case leave the subs crossover all the way up because the receiver is still managing the bass output itself.
*disclaimer* That's how my old Yamaha receiver worked, if your receiver has a "both" option you should find out exactly what it's doing in that mode before deciding how to use it.
I orginally owned the Gallo Micros (which could not reproduce frequencies nearly as low as the Gallo A'Divas. So, I replaced my front and center speakers with the A'Divas---in part so that the crossover would match up with my system. Also, the A'Divas are a larger sphere and my initial research led me to believe that the titanium version produced higher quality sound.
They are better, but the bottom line is a speaker that size no matter how great it is simply can't produce much volume, and it can't play well in the lower range. It's a matter of physics.
Ideally you want your mains to play well down to 60hz or so. That way a crossover of 80hz will work very well without any holes in the mid bass range. Personally I prefer main speakers that are near full range, with a -3db point around 40hz. I think 80hz is really too high a crossover point, 60hz is better.