Do you think you need a subwoofer?


Why almost any one needs subwoofers in their audio systems?

I talk with my audio friends about and each one give me different answers, from: I don't need it, to : I love that.

Some of you use subwoofers and many do in the speakers forum and everywhere.

The question is: why we need subwoofers ? or don't?

My experience tell me that this subwoofers subject is a critical point in the music/sound reproduction in home audio systems.

What do you think?
Ag insider logo xs@2xrauliruegas
The reasons for a sub with monitors is obvious. More and better bass, when they are integrated properly.

For "full range speakers" which only start to roll off at 32hz or below, unless you want to hear airplances taking off in home theater applications, or are an organ nut, I believe that the best use of a sub is when your full range systems create bass problems in your room because the location of the main speakers creates very uneven bass response. You can roll off the bass at a ligher level and put the sub in a location that doesn't exacerbate the problems inherent in the room size.

The problem with using a sub with any "fast speaker" is proper integration. This is especially so for speakers with little inherrent bass, say those that are down 3 db at 60 to 100 hz. This requires a sub that is equally fast in the overlapping frequencies. Very hard to find, especially with panels and electrostats.

Life is a trade off. :-)
As full integration of subwoofers is quite difficult and because most subwoofers cannot keep up with many midrange drivers and tweeters, I would seek to avoid them. But because these same problems bedevil full range speaker designers, there is no easy advice to give.

For a long time I had Beauhorns with a single driver. They were great from about 65 Hz to 13k Hz. I finally found subwoofers and an amp that would keep up with them using a high pass filter on the subwoofer amp starting at 40 Hz and the natural roll-off of the Beauhorns. It looked good on instruments and was satisfying, but when I got the Acapella LaCampenellas, I realized that there was much missing from about 125 Hz to 50 Hz. But with the Acapellas I don't have house shaking frequencies below about 28 Hz.

So the answer to your question is both absolutely you need subwoofers and absolutely no subwoofers are impossible.
Here are two articles that you might find very interesting. They go a little beyond what is normally touched on here in the forum.

Read THIS and THIS

I've intergrated my 15 inch Velodyne sub to my NHT3.3 main speakers (which are -3db@ 23hz) by setting the sub crossover at 45hz just like the article says, and it works GREAT.

Easy, and quick reading ... soon the student will be the teacher.

Good Luck, Dave
It depends on your listening preferences too, if you like to listen at high volume levels like i do, and you want clean, pounding bass, then you definately need a sub (or two), if you like listening close range at low volume levels, then you probably don't. my 2 cents