BHFProfessional wrote on Wed, 13 October 2004 16:59 |
I see a lot of people using single and dual 18" boxes. It's like the industry standard or something, for pro sound companies to have a large inventory of dual-18" enclosures. But what I'd like to know is, why aren't 21" woofers like this one (see picture) in wider use? |
JR wrote on Thu, 14 October 2004 21:03 |
21" will work OK within their bandpass but you will probably use another smaller woofer above them. |
jbrooks wrote on Thu, 14 October 2004 19:40 |
But there is an awful lot of Turbosound TSW-21 cabinets out there for something that 's not supposed to work so well. |
Quote: |
Mike AB wrote on Thu, 14 October 2004 10:45 Simple answer. Transient response. An 18" woofer is commonly considered the largest size woofer that will effectively reproduce transients. The larger the cone surface area, typically thicker material is required to make the cone rigid enough to withstand the immense push of the voice coil. EV had their 30" woofer 20+ years ago (Mitsubishi and possibly others had King Size woofers as well), and it put out some IMPRESSIVE low end. But no punch. Notice it isn't widely used or available anymore? It IS possible that through new materials that these guys have overcome this issue - but I don't believe it.. Regards, Mike |
BHFProfessional wrote on Thu, 14 October 2004 00:59 |
I see a lot of people using single and dual 18" boxes. It's like the industry standard or something, for pro sound companies to have a large inventory of dual-18" enclosures. But what I'd like to know is, why aren't 21" woofers like this one (see picture) in wider use? P-Audio SD-21 This has a 6" Voice Coil (!) and extends down to 30 Hz. It also handles 1000w per driver RMS, 2000w max. A dual-12" cabinet could handle 4000 watts with just one unit. |
Mike AB wrote on Thu, 14 October 2004 10:45 |
Simple answer. Transient response. An 18" woofer is commonly considered the largest size woofer that will effectively reproduce transients. |
Dave Barnett wrote on Sun, 17 October 2004 10:02 | ||
What kind of transients make it through a low-pass filter????? |
D. Parker wrote on Fri, 15 October 2004 15:44 |
Note the 113 DB sensitivity at 1w/1m. BUTTT!!!!! |
D. Parker wrote on Fri, 15 October 2004 15:56 |
I believe one of the advantages of the bassist having 10's onstage is that the 10's are easier to hear up close. |
Quote: |
A bassist standing near his stage rig cannot hear the lower freqs an 18 puts out. |
Quote: |
They develop out farther in the room and the sound guy has to deal with them. 10's do this too, but not nearly as bad. |
Quote: |
One thing I noticed early on in this business is that to satisfy the bassist onstage, (me included), the stage rig will be pretty much filling the room with bass. AND, it doesn't matter if the bassist doesn't have a rig onstage, if he only has wedges, when I get the wedges cranked enough to make the bassist happy, the wedges are filling the room with bass. |