Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

[ Follow Ups ] Thread: [ Display  All  Email ] [ Tweakers' Asylum ]
[ Alert Moderator ]

Re: MOSFETs work fine too...

The impedance of a normal speaker dips when it receives a transient. Consider a woofer moving inwardly with some low frequency signal and then a bass drum thump comes through. The impedance for transients is much lower as the speaker load includes the speakers own momentum which includes the moving air mass etc.

Huh?

The point at which the speaker's own momentum is greatest relative the amplifier's ability to control cone motion, which is also the point at which the speaker's back-EMF is greatest, is at the speaker's fundamental resonance (Fs), which is a point of high impedance, not low impedance.

Any tendency for the cone (or more specifically the voice coil) to want to continue to move beyond that dictacted by the output signal will result in greater back-EMF from the speaker which presents itself to the amplifier as a higher impedance.

se




This post is made possible by the generous support of people like you and our sponsors:
  Schiit Audio  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]