Thanks for that info Pete.
I have those specs for a speaker, but not Le, so I'm using the Le = Kxm x @ to the power of (Exm - 1) formula.
This part is confusing me;
>>where @ = 2 x pye x f; { f = frequency in Hz }
What frequency? Where do I get that figure?
Thanks for any help.
I have those specs for a speaker, but not Le, so I'm using the Le = Kxm x @ to the power of (Exm - 1) formula.
This part is confusing me;
>>where @ = 2 x pye x f; { f = frequency in Hz }
What frequency? Where do I get that figure?
Thanks for any help.
This part is confusing me; >>where @ = 2 x pye x f; { f = frequency in Hz } What frequency? Where do I get that figure?
Hi sparkless,
Maybe this could be of help? Picture 1(1) :
b
1(1)
Attachments
n those formulae, is x = multiplier? = *
Hi Andrew,
Yes but not in Exm or Kxm where x indicates a reactive element.
I admit that using x as a multiplicative operator can confuse.
Here's a better picture:
b
1(1)
Attachments
Thanks Bjorno for that info.
>>Omega, f, are not constant but variable<<
Understood. What I am not sure about is , when the specification
Le is given for a particular woofer at what F is that figure based on?
I believe it is usually 1K, is that correct? (need this spec for Zobel)
Steve.
>>Omega, f, are not constant but variable<<
Understood. What I am not sure about is , when the specification
Le is given for a particular woofer at what F is that figure based on?
I believe it is usually 1K, is that correct? (need this spec for Zobel)
Steve.
Understood. What I am not sure about is , when the specification Le is given for a particular woofer at what F is that figure based on? I believe it is usually 1K, is that correct? (need this spec for Zobel)
Hi Steve,
Correct! The primary standard measurement point is at 1 k Hz.
b
..So if I'm using a Zobel for a woofer that's to be crossed over at 2500Hz should f = 2500 to get the correct Le ?..
No, Le should be measured at 1 kHz because thats the frequency point where the Zobel network is supposed to correct the driver impedance.
See my picture 1(1).
b
1(1)
Attachments
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