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In Reply to: RE: Speaker driver or speaker box? posted by Ivan303 on November 23, 2020 at 06:03:39
Apologies - I have corrected my post.
Follow Ups:
might make it more suited for low damping factor amps.Bigger magnets?
Sensitivity?
Boxes vs. horns?
If it's magnet size, guessing the JBL 2441's on Edgar 'salad bowls' should qualify?
Edits: 11/23/20
In this case, I'm just talking about bass. The low damping factor raises the effective Q of the driver, while a bigger magnet decreases it. So you can make the same alignment in the same box with the same cone, while the larger magnet increases the efficiency.
As I understand it, in the early post-WWII days many speakers were maximum efficiency designs with huge magnets and a low Q. This made them suitable for bass horns, but as direct radiators their Q was too low to get deep bass. A solution was unity damping (output impedance of the amp was equal to the driver's DCR), and there were several amplifiers that used a mix of positive and negative feedback to create unity damping, usually with a switch to choose between high damping and unity damping.
My simple take is that amplifiers and speakers form a system: factor the amplifier output impedance into the design of the speaker. SET (in combination with a speaker) bass need not be "mushy" as some claim.
"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein
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