Cdc: "You say Dan Wiggins can't use a vented box that can outperform a sealed box but he shows how he can."
Beat it in what manner? Given optimally tuned designs, a vented box may have greater extension and output, but it will never have the same amount of definition and transient response that a sealed box can achieve. Like i said, quantity vs quality.
"Bobby is lowering bass below tuned freq. which you say increases distortion and he says he found a way around that."
That is what Bobby says. As i mentioned in that thread, NOWHERE in the Stereophile review is distortion measured or quoted.
"Sounds like you don't think either one knows what they are doing / following the laws out physics."
I think that Bobby has a much better idea of what he's doing than Dan. Dan is all about computer designing a product for maximum quantity, not maximum quality. If you doubt this, look at the Adire website and you'll see the "monster" sized woofer with mega-excursion that they are working on. Given that Dan doesn't understand the difference between an amp being able to load into a speaker and what damping factor means, it is pretty obvious that he's letting the computer do his thinking and work for him.
On the other hand, Bobby is about hands-on experience and tweaking for optimized results with minimal trade-offs. He understands what the words "control", "loading" and "damping" mean.
Dan will get you a lot of sound. Bobby will get you good sound.
"To my ears Dunlavy's sounded much less dynamic than Virgo III's or B&W. And B&W publishes distortion under 1% with their vented boxes. Bass is very tight and picks up on the beat (toe tapping)."
Dunlavy's had their own problems, just like any other mass-produced speaker. On top of that, most people aren't used to listening to "tight" bass with minimal ringing. Facts is facts, personal preferences are something all-together different.
Try taking a look at this >website
. Click on "tech notes" and then "bass loading" and read that. He basically repeats the same things that i said in that and a few other threads. For sake of clarity, i'm not taking credit or saying anything that hasn't been said and proven to be fact long ago.
If you doubt these facts or just want to delve deeper into the subject and learn for yourself, pick up a copy of Vance Dickason's Loudspeaker design cookbook
. As i've mentioned before, I would always encourage one to learn for themselves, both through reading and hands on experience. The more that you know, the less bullshit you'll be forced to unknowingly swallow.
Believe me, i learned the hard way. I used to think that sealed speakers were for idiots when i was younger. Why would anyone want a speaker that didn't play as loud, go as low or took more power to operate? The answer is obvious once you learn how and what to listen for. Like i said before, quality vs quantity. Sean