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
Good idea Sstark,

I'm going to get a decent SPL meter this week to help check my room problems with some test tone cd's, anyway.

It's reassuring to hear that you are actually corssing in the subs that high(as compared to standard 80Hz) because my intial tests over the last week or so, seem to indicate that the 100-120Hz range works best in my room. It's hard to ell where in that range it falls because Paradigm doesn't provide precise numbering along the dial, nor would that matter because I understand that the pot can be up to 20% off.

Anyway, I've been using two or three cello works for tuning the crossover frequency - Kronos Quarter "Gnarly Buttons" & "Pieces Of Africa", and Roger Kellaway's "Cello Quartet". There are also some excellent blues/jazz bartone works that I've noticed get "fleshed out" with the higher setting.

80Hz seems to be a "cleaner" setting, but 100+Hz tends to help out cello, piano, organ, etc.

BTW, Terry Cain suggests using push-pull tube amps with the passive subs. And he said they don't have to be monster amps to get great sound, so I'm considering some vintage PP organ amps. I figure they had to be able to push some current in order handle sustained organ notes in cathedrals/churches.
Dear Darkmoebius: You can try the CD from the original soundtrack film: Sneakers. REL suggest to use it in the four track for test the subs room integration.

Regards and enjoy the music.
Raul.
Hi Raul,

I just burned RealTraps Test Tone CD onto a blank cd and have been playing with it for an hour or so.

It's amazing how much output jumps on in the frequencies where there are room modes. Fells like 5x the volume or more.
Dear Darkmoebius: It looks great. I will try this week-end ( if I can ).

Regards and enjoy the music.
Raul.
Dear Raul and others,

I ran into a thread on avtalk.co.uk specifically about using the high-pass filter in the Velodyne DD series:
http://www.avtalk.co.uk/forum/index.php?t=msg&th=11392&start=0&rid=0&SQ=0

In this thread, it is observed that the phase of the signal that is passed beyond the high pass filter is quite variable. There is a chart here where someone with a DD18 created to demonstrate this. The poster then goes on to recommend not using the high-pass filter on the Velodyne DD series. Raul and others - do you feel as though these phase variations are a major problem? Minor problem?

Thanks for sharing thoughts

Todd