9515 DUMAX Results

[ss3079 5,000+ posts]

http://www.betteraudio.com/geolemon/9515/DUMAX.htm

Was posted at SIN, thought people may find it interesting to look at here as well.

- Steve

Click to read more...

 

[Randy Savage 5,000+ posts]

Nice BL curve //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

That report just goes to show that the DD is a SPL driver...

 

[RangerMan Premium Member]

12.9 mm of XMax...wow.

 

[mgaidica 10+ year member]

looks like a **** good SPL driver.. but how do u interpret the KMS and BL curves?

 

[slipknot87420 10+ year member]

Originally posted by RangerMan 12.9 mm of XMax...wow.

I thought you needed xmax to be loud obviously not

 

[RangerMan Premium Member]

Originally posted by slipknot87420 I thought you needed xmax to be loud obviously not

Naw...check out the RFL...driver is unlinear as hell.

 

[BDIDDY 10+ year member]

Originally posted by RangerMan Naw...check out the RFL...driver is unlinear as hell.

I thought it had 4 inches of excursion?

 

[RangerMan Premium Member]

Originally posted by BDIDDY I thought it had 4 inches of excursion?

So they claim...but thats not XMax

 

[bumpin_blazer 5,000+ posts]

yeah that is a sexy BL curve i must admit. anyone have the DUMAX for the brahma??

adam

 

[mgaidica 10+ year member]

brahma - http://www.adireaudio.com/Files/BrahmaDumax.pdf

still wondering what BL and KMS curve shows..

 

[Randy Savage 5,000+ posts]

BL is the flux density in the magnetic gap (B) and the length of the VC in the gap (L).

Usually a higher BL= higher sensitivity and lower Qes. Mms could affect this, however. If the woofer has a high Mms, it could have a low sensitivity and higher Qes, despite the BL product.

People are taking these DUMAX results too seriously IMO...

Xmax doesn't mean much on a SPL driver if the motor isn't strong enough to push it that far against pressure...

Wiring coils in series will double the BL...but that doesn't double the motor strength at all...just changes the Re of the sub...

 

[Mark_ab 5,000+ posts]

Numbers mean **** all.

 

[ss3079 5,000+ posts]

Originally posted by m_harrison Hold on here...you mean numbers aren't everything??? Man, I've been living a sham!

- Steve

 

[RangerMan Premium Member]

Originally posted by snova031 BL is the flux density in the magnetic gap (B) and the length of the VC in the gap (L).

 

Usually a higher BL= higher sensitivity and lower Qes. Mms could affect this, however. If the woofer has a high Mms, it could have a low sensitivity and higher Qes, despite the BL product.

 

People are taking these DUMAX results too seriously IMO...

 

Xmax doesn't mean much on a SPL driver if the motor isn't strong enough to push it that far against pressure...

 

Wiring coils in series will double the BL...but that doesn't double the motor strength at all...just changes the Re of the sub...

Ladies and gentlemen...a perfect example of the COPY/PASTE function on your computer.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Randy Savage 5,000+ posts]

Originally posted by RangerMan Ladies and gentlemen...a perfect example of the COPY/PASTE function on your computer.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Some of it was...got the definition of BL from eatel...
But a lot of it was just stuff I have written down or just things I've noticed...

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif