Subwoofer Specs Definitions (Fs, Qms, Qes.....)

[Tbird006TheKing 10+ year member]

What do all of these mean I've searched and only found one thing that but it confused me more

Fs, Qms, Qes, Qts, Mms, Vas, Displacement

What different affect do these make on the performance of the subs in sealed and ported boxes

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[Justinh722 10+ year member]

Heres a link I found with some good detailed info.....Check it out.

http://www.speakerplans.com/index.php?id=faq1

 

[squeak9798 5,000+ posts]

http://editweb.iglou.com/eminence/eminence/pages/params02/params.htm

 

[Tbird006TheKing 10+ year member]

In sealed boxes the bass is more punchy and very tight?

 

[Raven 10+ year member]

If you are at a low enough experience level to ask, then in your case, yes. It is also dependant on how big the sealed box is.

 

[PV Audio 5,000+ posts]

it is tighter bass because the air pressure inside the box springs the cone back in place. that explains why lower qts (less resistance) is good for vented because the cone is already well controlled. sealed is for higher because the cone needs "help" getting "back in line".

 

[Raven 10+ year member]

^ Close enough that restating it is only an opportunity for fancy words. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[JimJ 5,000+ posts]

When has that ever stopped us?

We'd miss the opportunity to use words like "compliance", "suspension", and "transient response" //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Raven 10+ year member]

Please, most of this board can't even agree on what transient response is. The rest don't know what it is, period. =)

"Compliance" is a mystery even to me.

EDIT: The new edit and quick post systems kick ***!

 

[squeak9798 5,000+ posts]

"Compliance" is a mystery even to me.

Compliance = opposite of stiffness. Relates to how compliant the suspension is. Low compliance = high stiffness. High compliance = low stiffness