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04-11-10
This particular paper is interesting, but very dated . . . a ... Kirkus
04-11-10
Thaks shadorne, that explasins what bobby was talking about, ... Pubul57
04-11-10
indeed, a critically damped acoustic suspension speaker doe ... Shadorne
04-11-10
Shadorne, a long time ago i remember reading(though for the ... Unsound
04-11-10
Hi unsound . . . it's not so much a matter of whether or not ... Kirkus
04-11-10: Shadorne
Another way to think of damping is that a high damping amp "shorts" the speaker woofer voice coil when the signal is "zero" - this means that the voice coil current is maximized (sees least resistance) in response to the movement of the coil through the magnetic field which creates the strongest possible back emf which opposes the coil movement and acts as a "damper" for as long as it takes the coil to come to rest. The more powerful the magnetic field (magnet size/weight) and the bigger the diameter of the voice coil and lighter the cone weight then the better an amplifier is able to tightly control a woofer. (This is why large 4 inch voice coils that are very short (light weight) and sit in a long powerful magnet gap are so desirable. These are extremely expensive as well with a quality 12 inch woofer costing around $1000 and weighing about 25 lbs or more.
Of course at resonance, the impedance of the voice coil rises and electrical damping is not as powerful and that is where the "acoustic suspension" design becomes critical to how the speaker will sound.
Shadorne (System | Reviews | Threads | Answers | This Thread)
04-11-10
i would add that outside of pro applications these kind of ... Shadorne
04-12-10
My understanding is that a woofer's electrical damping is de ... Audiokinesis
04-12-10
[/quote] in other words, most prosound woofers are overdampe ... Shadorne
04-12-10
What are the virtues of a dc-coupled amplifier like the atma ... Pubul57
04-12-10
excellent point - they also tend to have lower mechanical ma ... Kirkus
04-12-10
Pubul57, there's no shortage of material on the web that con ... Kirkus
04-12-10
i would also add that amplifier tight control is a good thi ... Shadorne
04-12-10
You're precisely correct shadorne . . . and that's why in th ... Kirkus
04-12-10
Pubul57, kirkus has been right on all his points but one- i' ... Atmasphere
04-12-10
Kirkus wrote: "the problem with increasing the amplifi ... Audiokinesis
04-12-10
Duke, which of your speaker designs is best for a room 11x18 ... Pubul57
04-13-10
Pubul57, i'd rather go offline with that to avoid taking the ... Audiokinesis
04-13-10
Makes sense. we'll talk. Pubul57
04-13-10
Kirkus, shadorne, and unsound, i really appreciate your inpu ... Atmasphere
04-13-10
Atmasphere and duke too, i think it's us (well at least i ca ... Unsound
04-13-10
on the power rules front i think that provided a speaker is ... Shadorne
04-13-10
A bit off topic here, but, if a speaker manufacturer needs t ... Unsound
04-13-10
you mean like infinity or a totem mani 2 or a mbl ...well i ... Shadorne
04-14-10
Are "poorly" designed speakers by your definition, ... Pubul57
04-14-10
Unsound, i think the 'harm' comes in when the speaker requir ... Atmasphere
04-14-10
It seems there is no single model or paradigm that can accou ... Mapman
04-14-10
ah, unsound . . . this is the crux of the matter. atmaspher ... Kirkus
04-14-10
atmasphere, i'm not sure that many speakers actually necess ... Unsound
04-14-10
Two different recipes that both can produce some very good s ... Mapman
04-14-10
In the last 20 years the use of sets has really increased a ... Atmasphere
04-14-10
Atmasphere, i wasn't talking about those kind of speakers. i ... Unsound
04-14-10
If i may steer this thread a bit back to the original questi ... Kirkus
04-15-10
Kirkus, thanks! your explanation of longer duration of headr ... Unsound
04-16-10
Kirkus, "the particular set of energy-storage dynamics ... Trelja
04-16-10
Do tubes have the same "advantage" in preamplifier ... Pubul57
04-16-10
"do tubes have the same "advantage" in preamp ... Mapman
04-16-10
I think they do. it would be really tricky to build a zero-f ... Atmasphere
04-16-10
There are many here much more qualified than i am to answer ... Unsound
04-16-10
Trelja, thanks for the kind words. unsound, are you referri ... Kirkus
04-16-10
no. tube preamp stages almost universally operate in class ... Kirkus
04-17-10
@ralph: found you comment about the mbl101e's interesting. ... Myles_b_astor
04-19-10
Myles, the mbl has an impedance peak of about 8-9 ohms in th ... Atmasphere
04-22-10
What a incredible collection of very high-tech posts! you gu ... Emorrisiv
04-22-10
Always thought the acoustats were designed around the " ... Pubul57
04-22-10
I have heard them with tubes and they make magic.ss is surel ... Emorrisiv
04-22-10
Emorrisiv, i've heard the acoustats sound great with a set o ... Atmasphere
04-23-10
Of course acoustat made ss amps to go with their speakers. Unsound
04-23-10
Yes, just as they also made a dedicated tube otl-powered spe ... Atmasphere
04-23-10
Yes, there were older acoustats with dedicated otl's, but th ... Unsound
04-23-10
No doubt the m60s are quality watts:) Pubul57
05-03-10
No doubt at all Emorrisiv
05-15-10
If you have any doubt, then look at what hp has to say about ... Angela100
05-22-10
Angela, i have stopped all my subscriptions because of the w ... Emorrisiv
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