[sdiy] inductors, B fields, and confusion

[Magnus Danielson]

From: "Scott E." <yahudinyhwh at sbcglobal.net>
Subject: Re: [sdiy] inductors, B fields, and confusion
Date: Sat, 12 Jun 2004 12:15:30 -0700
Message-ID: <40CB5652.8000609 at sbcglobal.net>

> Magnus,

Scott,

> Now you have my curiosity. Under what circumstances would you consider 8 
> ohm speaker drivers a poor choice? There are two cases to consider:

... OUPS! I just had you!

It was irony Scott, irony...

Meaning to say, now that I've shown that impedance is independent of efficiency
I could probably also show it's dependence... with another suite of
mysteriously connected formulas and arbitrary assumptions ;O)

> 1. Drivers in a passive system where the amplifier is loaded by the 
> crossover circuit and

Please avoid these as much as you can. *really*!

> 2. Active systems where the driver is directly connected to the 
> amplifier, having an electronic crossover prior to the amp.

Use active system only.

Cheers,
Magnus - former PA-systems designer