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In the Forum: Audio Discussions
In the Thread: Constructing LF modules to the limits
Post Subject: Do your own experiments.Posted by Romy the Cat on: 9/24/2011
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 oxric wrote:

I have always felt that if I went for a vertical array of 10" drivers, I would keep the drivers closer spaced than you do in your 'Dunlavy' made enclosure.

Based on the 110" height of the tower, I see that you would be doing thisare doing this by reducing the distance between eight drive units to about 5cm with the planned 110" tower. I was planning to try and use 8 drivers myself if I went for such a configuration but I would try to find a way to reduce the distance between the drivers to virtually nothing.

In fact, if I could talk Scanspeak into it, I would have two cutouts at opposing ends of the frames. This would possibly in your case enable you even to have 12 drivers per tower.

I am not sure what drives you: a desire to but a speaker of a desire to initiate a new group buy for ScanSpeak drivers. Knowing you I am pretty sure that if I do not put a stupid smiley face in the end of the last sentance then you will not be able to “get” that it meant to be sarcastic.

Anyhow, for sure you are right – the more drivers the merrier. When I went a few years from 4 drivers to 6 drives it was not a minor change. It is also explainable. The boost of 3dB sensitivity with doubling driver is not as important as the boost of 6dB max dynamic range (via more power handeling). In reality the boost of max dynamic range might be even more and multiple coils have better cooling options and minimize the thermal compression. There are many other advantages as well. I would fit the font baffle as you said with as many drivers as I might but you need to be sensitive to the volume of the box. If I would like to keep the width no more than 12” then more drivers means larger depth of the box. Do not forget that you need to provide the min volume of the air for each driver. I do not insist that the volume I use is right or wrong, at might be smaller or larger; in fact I do prefer it to be a little bit larger then what I have now. All of those things are well predictable for sealed boxes by using the T/S data. Anyhow, more driver = more depth of the box….

BTW, if you would like to think about the my solution then get a pair of those drivers, put then in 2-3 cub feet boxes and experiment with them. They for sure have own sound, you might or might not like them. I kind of like them and I very much use to them but I am very much might be ignorant in what large drivers or betters drivers might do.

The Cat

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