Forum: Pi Speakers «»
Posted on: Thu, 23 August 2007 14:43 «»
By:Wayne Parham Re: Basshorn Size
Hoffman's Iron Law states that the efficiency of a woofer system is directly proportional to its cabinet volume and the cube of its cutoff frequency. What this means is the most powerful subwoofer systems are necessarily large.What this formula says is y...
2
Forum: Speaker «»
Posted on: Mon, 09 April 2007 14:30 «»
By:Wayne Parham Hoffman's Iron Law
I'd say this falls into the realm of "Hoffman's Iron Law". First formulated back in the early 1960's by Anthony Hoffman (the H in KLH), Hoffman's Iron Law is a mathematical formula that was later refined by Thiele and Small, whose work now form...
3
Forum: Pi Speakers «»
Posted on: Thu, 12 July 2001 18:04 «»
By:Wayne Parham Extended bass response from small cabinets
Everybody wants deep bass from a cabinet no bigger than a lunchbox. Can we build a small box that makes deep bass? Well, yes. But can it also be efficient? The answer is no. Hoffman's Iron Law states you can have low cutoff, high efficiency or small s...
4
Forum: Pi Speakers «»
Posted on: Thu, 19 April 2001 16:21 «»
By:Wayne Parham Re: folded horn
That's true, there's no replacement for displacement. This is more true for basshorns than anything else. If they're not big enough, they get peaky. I'd rather have a good bass-reflex system than an undersized peaky basshorn. But when properly made, th...
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