<SMALL>Dave, Based on your recent Duffs gig with Keeter, was your amp moving enough air for you that night? Just trying to get a feel for how you calibrate Volume vs Loudness vs Tone...not sure if, for example, a 12 and a 15 are moving the same amount of air, is that the same loudness?... and then what about tone</SMALL>
I'll try to be more lucid, Pete --
When backing a singer-songwriter I generally lay back in the mix and try not to step on the vocals (everybody repeat after me: "when the singer opens their mouth the band comes down"). I had lots of room to spare come solo time and I heard from many respected musicians there that my solos were cutting through fine. I couldn't hear the acoustic guitar well, either, which also caused me to lay back more than usual in the mix. Still, in the future I will most likely add a second cabinet on the opposite side of the stage or set the amp on a chair to the side rather than on the floor right behind me to cause me to open up the throttle a bit more so that others could hear the comp work better. Always thinkin' of ya....
There is no question in my mind that a NV112 couldn't possibly have done that particular job as well as the Randall did. I was pushing pretty hard occasionally to keep up with the bass amp and drums which were right beside me.
As far as loudness / volume / tone I'm not certain what your question is. In technical circles the term "Loudness" generally refers to the Fletcher/Munson human hearing response curves (more lows and highs make a given signal seem "louder" at a given sound pressure level, a subjective term not connected to actual SPL) - this is also related to the subjective spectral phenomena most folks call "Tone."
"Volume" refers to an objectively measureable sound pressure level. A given SPL can often be achieved by speakers of different sizes, but the smaller ones will always work harder, induce more distortion and produce a waveform that is more easily blocked or otherwise altered by furniture, fixtures, warm bloodbags and the like.
A 12" can't possibly move as much air as a 15" speaker. To generate an equal SPL the smaller speaker has to affect a smaller volume of air MUCH more radically than the larger one. This increases amp and speaker induced distortion, weaker low end response and a significantly less cohesive waveform at distances and off-axis. The larger speaker system will always have the more "defined" sound that Eric mentioned at the top of this thread.
Is that sort of what you wanted to know?
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Dave Grafe - email:
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<font size="1" color="#8e236b"><p align="center">[This message was edited by Dave Grafe on 24 July 2005 at 08:42 PM.]</p></FONT>