Home High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

[ Follow Ups ] Thread: [ Display  All  Email ] [ High Efficiency Speaker Asylum ]
[ Alert Moderator ]

Re: Eminence LAB 12 drivers

Hello again Tom!

You wrote:

> > At some point, the folks who did a shoot out in Michigan will
> > have the measurements and listening results posted on the basslist
> > so more actual data will be available soon.

and I replied:

Here are the measurements from the " shootout ."

To which you replied:

> > Wayne, you did not actually look at the numbers very carefully.
> > Compare the response curves, distortion, impulse responses.
> > The LAB out performs the rest or at least that's what most of
> > the folks that were there thought. It went lower, louder and
> > with less distortion than anything else there.

Actually, Tom, not only did I "look at the numbers very carefully" but I provided a link to them so that others could see them as well. I would encourage others to look at the data and make up their own minds, rather than to have you or I put our own spin on it. Personally, I love horns but I've also always been quick to point out that realistically, it's difficult to hit the bottom octave with a basshorn 'cause they just have to be so large. My comments are more a reflection of this opinion than an evaluation of any particular product offering.

> > While I would prefer it to be zero every where, the acoustic phase
> > is around zero starting at about 50 Hz upward to about 5 KHz.

Looking at the impedance curve of the LAB horn, one can see peaks indicating reactive impedance. This means it isn't purely resistive, and so it cannot have zero degress of phase shift in those regions. I wouldn't expect any other sort of behaviour, so this isn't surprising. But you seem to be indicating otherwise here. Are you saying that your basshorn has no phase shift even in the regions where there are peaks in the impedance curve, which clearly indicate changes in reactive and resistive impedance?

> > The omnidrive is a powerful tool but I am not using it to correct
> > anything with "time" except for the crossover delay.

What sort of digital processing are you doing for the basshorn? I see impedance peaks at 35, 50 and 80Hz, so I expect some movement of phase at these points and in between them. So I assume that since you attempt to time align the system, you must have a delay algorithm that accounts for this as well, yes?

Wayne

This post is made possible by the generous support of people like you and our sponsors:
  WEET Music Caps  

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

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]