Using two subs

This subject is highly debated. Check forums. Both configurations can work well. Set-up is key either way. What works well in one room may not work well in another. If you have two subs then start experimenting. Try one sub to start. between speakers, near front wall, side wall, offset, centered, equidistant from listening position. Switch it out with the second sub once you find some spots you like. Next, stack them in the center, try stereo (one by each speaker). Try one up front and one off to the side wall.

The advantage to using two subs is this:

A single subwoofer will give you a unique pattern of reflection-related peaks and dips depending on where you place the sub and where the listening position is. These peaks and dips will be large enough and far enough apart to be audible.

With two subwoofers placed asymmetrically, their respective patterns of peaks and dips will never coincide at any listening position so the net result is smoother bass throughout the room.

You'll need for at least one of the subs (usually the one farthest from the main speakers) to have a 4th order crossover so that you don't hear its location.

No reason at all why you can't use two different subs. That might even result in a smoother overall response.

I use four small subwoofer modules in a system I showed at T.H.E. Show in Las Vegas about a month ago.

One disadvantage would probably be this: For a given total dollar expenditure, one big sub will usually give you deeper and louder bass than two or more smaller subs will.

Duke

I went form using one to two subs. The obvious benifit is of course more power and more apeaker. But I really can't explain it. With one sub I had bass. With two subs I have the instruments that are covered by subs. The bass appears to come form my main speakers.It's like they are not here.