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In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project
Post Subject: Bass as an alien force.Posted by Romy the Cat on: 8/14/2015
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 anthony wrote:
Personally, I am probably going to do a line array like Romy's using the same drivers but twice as many...so eight each side.  I have the drivers.  This configuration should give somewhere around 109dB @ 20Hz from 15w in room with cone movement of about +-3.5mm.

 The absolute amount of cone movement is irrelevant as it does not take in consideration many other factors: like type of suspension, the ay how driver deal with inertia, the type of magnetic system, the effective frequency, the positioning of VC to the gap, the way how code attached to the suspension, the driver “loading” into the box, the way how the driver is damped by the amp and many other parameters. In some cases a few mm is too much and in some case a few cm is fine.  
 anthony wrote:
If you have a regular rectangular room, you may be tempted to try a Double Bass Array.
I never heard this concept and after looking online I need to say that it does look very slick and very smart. There is a problem with DBA however. The DBA is a very nice way to deal with the room modes and I presume that if the DBA is properly implemented then it will be no room problem. However, it says nothing about the quality of bass itself. In my estimation the complexity of making a playback to have good bass are 70-80 about bass structure and the rest is about the room response. Room might have horrible nodes but ironically that might be corrected by bass output if you run narrow octave bass module. However, if the bass has wrong structure then there is nothing there might be done. An excessive bass volume is something that a person get accustomed and mind tunes it off and correct it eventually. The wrong bass structure is not brain-correctable and will be always there as some kind of alien force.

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