 Re: Double Blind Test
|
Joined: Sep 2004
Posts: 11,458
shareholder in the making
|
shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
Masters of Knowledge? Hey guys, he's been gone so long he forgot who we were! 
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
|
|
|
Re: Double Blind Test
|
Joined: Jul 2006
Posts: 12,077 Likes: 7
Founder, Axiom Upgrade Club shareholder in the making
|
|
Founder, Axiom Upgrade Club shareholder in the making
Joined: Jul 2006
Posts: 12,077 Likes: 7 |
Or his sarcasm got a little sharper.
|
|
|
Re: Double Blind Test
|
Joined: Dec 2008
Posts: 1,361
connoisseur
|
|
connoisseur
Joined: Dec 2008
Posts: 1,361 |
Charles, I don't know the reason for the "still" comment on the 50Hz note. If a sub or a regular speaker is designed to reproduce 50Hz, it'll do so with 10 or 20 watts input. The output would depend on its sensitivity, of course. If there's some notion that the 50Hz note would somehow need more power than the same speaker would need for the same sound level at 500 or 5000Hz, that isn't the case. Volume is volume, sensitivity is sensitivity. The obvious illustration of this is the speaker graphs taken at 1 watt(typically about 85-90dB). In good speakers the volume is relatively constant. There's no upward slope as the speaker goes from the bass to "easier" mid-range and treble frequencies. I meant I still don't get it after reading the articles and the posts. I just can't comprehend a subwoofer using 10 watts to make a 90db 50hz note. If that was the case, why would every sub use hundreds of watts even in modest settings. Marketing is one thing, but industry wide overkill is another. I'll just put this in the long list of things I don't get.
Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire
|
|
|
Re: Double Blind Test
|
Joined: Sep 2004
Posts: 11,458
shareholder in the making
|
|
shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
I'll just put this in the long list of things I don't get.
Sounds like you should be all about I've always wondered...
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
|
|
|
Re: Double Blind Test
|
Joined: Dec 2007
Posts: 7,786
axiomite
|
|
axiomite
Joined: Dec 2007
Posts: 7,786 |
If that was the case, why would every sub use hundreds of watts even in modest settings. How do you know every sub uses hundreds of watts at modest settings? The power is there for dynamics. Its there for when it is needed. I would expect that power usage starts to go up exponentially in movie scenes when you have a lot of LFE, particularly at the bottom of the range. Also, as soon as you use EQ to boost the low end, as it the case with the EP500 (and most any other sealed sub) you start to suck up a lot of power. How much power a sub requires depends on a lot of things: - efficiency of the driver - the material being played - the volume its being played at - whether or not EQ is used to boost the low end. The manufacturer has to take all these things into account and not all of them are in their control.
Fred
-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
|
|
|
Re: Double Blind Test
|
Joined: Sep 2004
Posts: 11,458
shareholder in the making
|
|
shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
|
|
|
Re: Double Blind Test
|
Joined: Dec 2008
Posts: 1,361
connoisseur
|
|
connoisseur
Joined: Dec 2008
Posts: 1,361 |
[quote=fredk] I would expect that power usage starts to go up exponentially in movie scenes when you have a lot of LFE, particularly at the bottom of the range.
I think that hits at my point of confusion. It seems well accepted that lower end or LFE, takes more power. But when compared to the formula, the response is often the opposite - i.e., it takes the same for 50hz as 5000hz. Another related question, if only speakers with lower efficiency can make solid bass ( this is a question,not a position) thus requiring the higher power, then does the theory hold true since in application the inefficiency of the driver needed to reach 50hz (or 30hz) will always require more power than the 5000hz note? Just curious. Sorry to beat, flog, skin, and parade this dead horse, but it just blows my mind that you could get a 50 or 30hz kick drum beat from a sub (or any woofer) with 10 watts. I have heard tweeters or mids play loud on small power supplies, but never a large driver making bass. I have built subs for car use since I was 14 and always found that even with the best subs (presumably of acceptable efficiency) you needed substantial power to get acceptable results. Damn, now I know how the flat earth society meeting went when Columbas came back to report!
Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire
|
|
|
Re: Double Blind Test
|
Joined: Nov 2008
Posts: 1,789
connoisseur
|
|
connoisseur
Joined: Nov 2008
Posts: 1,789 |
Ok so let me get this straight... the earth isn't flat?
My Stuff :
M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD
|
|
|
Re: Double Blind Test
|
Joined: Oct 2006
Posts: 6,955
axiomite
|
|
axiomite
Joined: Oct 2006
Posts: 6,955 |
Sniped!
I now have to edit to add this should have directly Quoted Mark's "Add Room Gain Too"
Oddly, it just occurred to me all those words individually insinuate "more"
Add = more
gain = more
too = also = kinda more
room, makes you think of roominess = more
What does this mean? Nothing really.
You guys should be used to the way I think when overtired by now.
Last edited by Murph; 08/11/09 03:53 PM. Reason: snipage
With great power comes Awesome irresponsibility.
|
|
|
Re: Double Blind Test
|
Joined: Dec 2008
Posts: 6,928
axiomite
|
|
axiomite
Joined: Dec 2008
Posts: 6,928 |
It does "seem" counterintuitive to not need more power to drive a 12" SW than say, a 4" midrange.
BTW, who is Columbas?
Half of communication is listening. You can't listen with your mouth.
|
|
|
|
Forums16
Topics24,946
Posts442,492
Members15,617
| |
Most Online2,082
Jan 22nd, 2020
|
|
|
0 members (),
662
guests, and
3
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
