ML-TL question: Meaning of dip at "Woofer and Terminus Far Field SPL"

[JC Fardo]

HI

I´m playing with MathCad 8 free demo. Enclosure is similar to Ariels but with MT Vifa PL18 configuration. Infinite Baffle SPL is nice with gradual rolloff.

Driver measured Fs: 38Hz, dip is at at 35HZ. Also first peak from Acoustic Impedance graphic is at 35Hz, and I really don´t know if this result is fine.

Thanks in advance for comments.

JC

 

[Timn8ter]

I believe the dip conicides with the impedance rise of the driver. This is normal. What you want to be concerned with are the ripples higher up. Here's a thread with MJKs explanations.
http://www.diyaudio.com/forums/showthread.php?threadid=25388

 

[JC Fardo]

Hi Tinm8ter

Thanks for reply.

In impendance graphic first peak is at 35Hz

Driver Fs is 38Hz so it´s 3Hz lower. Any problem?

TIA
JC

 

[JC Fardo]

Hi Timn8ter

Sorry. The answer is on the thread you have post

BTW nice page yours

TIA, JC