[JohnR]

And macho factor.

[rollo]

   Last evening I tried an experiment. Using a Sunfire sub with the mains. Great intergretion no issues. Lying around [ in use before the Sunfire]  a 15" Sound Dynamics sub . It was sitting about 3 feet to the left of my listening chair. After reading this thread decided to hook it up where placed and have a listen.
  Well, it was a improvement in volume of bass, better balanced and quite impressive overall. No EQ no nuttin, just set by ear. Now after doing that now considering using multiple subs with a Berhinger. If I could get good result without doing it properly when its done right, OMG.
  So are four Geddes subs and a Beringer in my future ? I have seen the light and want more now. Thanks guys  he he he.


charles

[jtwrace]

You might enjoy read this white paper.

http://www.gedlee.com/downloads/Philosophy.pdf

[werd]

And macho factor.

Its a fact that low freq sound waves can make a woman pretty horny. I have proven this. Well that and some nice cologne and some sweet talking can get you some. I think it has to do with it vibrating their "you know what"

[Rclark]

I'm putting together my first big hifi and definitely running multiple subs.





 Two of those bad boys sealed.

[Rclark]

 This article (click around on the tab at the bottom to compare different sub setups) shows you in graph form just how much better multiple subs are. Also shows them set up in different ways, measured.

 You actually see the peaks and dips in room with their 3d graph. Single sub systems are just awful

http://www.audioholics.com/tweaks/get-good-bass/subwoofer-placement-the-place-for-bass-part-1/subwoofer-placement-the-place-for-bass-part-1-page-9

[Quiet Earth]

Charles,

Before you invest in multiple subs (and I'm not saying that you shouldn't) you should really move those Pipedreams up against the wall and listen to them that way for a while. I can't imagine those speakers are shy of any bass and require a sub. But then that's what this thread is all about I guess.

   . . . . . now considering using multiple subs with a Berhinger.

Behringer's business model is to make cheap alternatives of existing products. This satisfies the entry level user and keeps the competition healthy. They do very well in this regard and they fill a needed space. Most of what they make is cheap enough to try without missing the money spent. But,

I would never upgrade to anything that had a Behringer logo on it. Just about everything they make is junk and it has a two-penny op amp sonic signature about it. I don't know why bass (or digital) would be immune from Behringer's sonic grip of death, but I guess people have concluded that the benefits outweigh the damage.



 

[djmckaytx]

This article (click around on the tab at the bottom to compare different sub setups) shows you in graph form just how much better multiple subs are. Also shows them set up in different ways, measured.

 You actually see the peaks and dips in room with their 3d graph. Single sub systems are just awful

http://www.audioholics.com/tweaks/get-good-bass/subwoofer-placement-the-place-for-bass-part-1/subwoofer-placement-the-place-for-bass-part-1-page-9

Thanks for the link...a very interesting read.

[DougSmith]

I would never upgrade to anything that had a Behringer logo on it. Just about everything they make is junk and it has a two-penny op amp sonic signature about it. I don't know why bass (or digital) would be immune from Behringer's sonic grip of death, but I guess people have concluded that the benefits outweigh the damage.

The DCX sounds just fine to me with my subs (no hum, no noise, and the distortion is orders of magnitude lower than the subs themselves).  I think it represents a far better solution than the XOs and equalization built into even the best plate amps. If you can prove that a more expensive solution would produce a better sonic experience I'd be interested.

[roscoeiii]

The miniDSP products may also be a possibility for helping integrate subs. Only just came to my attention so can't speak much to them as far as capabilities, much less potential sonic impact relative to the Behringer or other options. But thought that option should be pointed out.

[Quiet Earth]

If you can prove that a more expensive solution would produce a better sonic experience I'd be interested.

Hi Doug,

I'm not really trying to prove anything. I'm not trying to bash Behringer either, because it's fine for what it is. I'm just letting Charles know that if he passes his source through a Behringer, then he is going to hear it. I don't think there's any way to avoid that.

[werd]

   Last evening I tried an experiment. Using a Sunfire sub with the mains. Great intergretion no issues. Lying around [ in use before the Sunfire]  a 15" Sound Dynamics sub . It was sitting about 3 feet to the left of my listening chair. After reading this thread decided to hook it up where placed and have a listen.
  Well, it was a improvement in volume of bass, better balanced and quite impressive overall. No EQ no nuttin, just set by ear. Now after doing that now considering using multiple subs with a Berhinger. If I could get good result without doing it properly when its done right, OMG.
  So are four Geddes subs and a Beringer in my future ? I have seen the light and want more now. Thanks guys  he he he.


charles

Charles this post is awesome!! I like how the sub was sitting there (sounds like for years) and you decide to hook it up after reading this thread.  .  Voila great bass sitting there all this time.....

[DougSmith]

Hi Doug,

I'm not really trying to prove anything. I'm not trying to bash Behringer either, because it's fine for what it is. I'm just letting Charles know that if he passes his source through a Behringer, then he is going to hear it. I don't think there's any way to avoid that.

Well, I agree with you there... I wouldn't pass the source through it.

[Quiet Earth]

How do you hear it then? You have to put a signal through it eventually, don't ya? 

Not that it matters. There is an overwhelming majority here in favor of the multi sub concept. I think that was the point of the entire thread. Maybe we need a super tweeter thread now to complete the ambience retrieval picture . . . . 

[DougSmith]

I use a receiver as source; sub-out to the DCX.  A similar thing can be done with many preamps used in a separates setup.  Folks who use stand alone DACs with more esoteric 2 channel preamps generally use splitters on the pre-outs to go to amps plus DCX.

[sts9fan]

Multiple sub and super tweeters is a poor analogy. 

[andy_c]

How do you hear it then? You have to put a signal through it eventually, don't ya? 

The Geddes multi-sub approach runs the mains full-range.  So one way to do it is to "tee" the preamp outputs and go straight into the L and R power amp inputs with one side of the tee on each of the preamp output channels.  The other side of the tee on each of the L and R preamp outputs goes into the Behringer, which sums them to mono, then provides individually-adjustable low-pass filters (and parametric EQ if desired) for up to six subwoofer channels.

So you end up with low-pass filters on the subs, but no high-pass on the mains, thus avoiding going through the Behringer on the mains side.  Getting a purist amplification path for the subs is not strictly necessary, so this is a clean solution.

[speakerman19422]

Two transmission line satellites crossed over to two transmission line subs at 100hz.

[gedlee]

If the multi sub method really is da bomb, then someone with a vested interest should be willing to do a demo.

I think that you might misunderstand that I don't really have a "vested" interest in using multiple subs.  Subs are an insignificant part of my business.  Thats why I don't publish much on it.

And if you are not aware of it I won't ever be showing anything at an audio show.  Those environments are not for my kind of system.  I've tried this before and it doesn't work.  If you really want to hear for yourself the very best option is to come to my home.  No one who has done that has ever bought any other speakers, or questioned if multiple subs work.  But I can't take my listening room "on-the-road".

[roscoeiii]

Gedlee,

Thanks for popping up here. You may have covered this elsewhere, but I am curious why your designs run the main drivers without a filter to take some of the low end load off of them?