schotness Posted January 30, 2008 Share Posted January 30, 2008 Ive just realised my multi pedal outputs in stereo So my question is would 2 of valve junior combos together be twice as loud ? Link to comment Share on other sites More sharing options...
pcollen Posted January 30, 2008 Share Posted January 30, 2008 Ive just realised my multi pedal outputs in stereoSo my question is would 2 of valve junior combos together be twice as loud ? Each amp would drive a seperate speaker at 5W each. That's 10 watts coming at you, vs. 5 watts. But 10 W is not twice as loud as 5W. Twice as loud would be +3db louder, and that would be a factor of 10.....50 W vs. 5 W. You'd need 10 VJ's each driving their own speaker to get twice as loud. Now THAT would be something to see....something to make Joe Perry jealous over. Link to comment Share on other sites More sharing options...
defaced Posted January 30, 2008 Share Posted January 30, 2008 But 10 W is not twice as loud as 5W. Twice as loud would be +3db louder, and that would be a factor of 10.....50 W vs. 5 W. That is not correct. From Wikipedia http://en.wikipedia.org/wiki/Decibel: Specifically, an increase of 3 dB corresponds to an approximate doubling of power. (In exact terms, the factor is 103/10, or 1.9953, about 0.24% different from exactly 2.) Link to comment Share on other sites More sharing options...
wpkg Posted January 30, 2008 Share Posted January 30, 2008 That is not correct. From Wikipedia http://en.wikipedia.org/wiki/Decibel: how so? 10 watts is not twice as loud as five watts. 50 watts is twice as loud as 5 watts. Link to comment Share on other sites More sharing options...
defaced Posted January 31, 2008 Share Posted January 31, 2008 Read what I posted: Specifically, an increase of 3 dB corresponds to an approximate doubling of power. Doubling in power is 2 * 5 watts = 10 watts, which is exactly what this person wants to do. Link to comment Share on other sites More sharing options...
tunghaichuan Posted January 31, 2008 Share Posted January 31, 2008 I think there are two things being discussed here: 1. 10 watts is twice the power of 5 watts; 5w x 2 = 10 watts 2. for the human ear to percieve twice the volume the wattage needs to increase by a factor of 10; 50 watts sounds twice as loud as 5 watts. tung Link to comment Share on other sites More sharing options...
Riffster Posted January 31, 2008 Share Posted January 31, 2008 Well said tung. To go back to the original question, the answer is no two amps will not be twice as loud exactly but the sound will sound fuller and IMO nicer. Also you can set each amp at a different volume and see how it sounds, also all of those effects in your pedal that require a stereo set up like "rotary speaker" or "panning tremolo", maybe some stereo flanger effect, all will sound great especially if you set the amps apart 10 feet or so...cool stuff. I have a Boss GT-6 and that is what I do. Link to comment Share on other sites More sharing options...
cGil Posted January 31, 2008 Share Posted January 31, 2008 Even with three VJr's on full blast, it's still not that much louder than one. But boy does it ever sound good! Gil... Link to comment Share on other sites More sharing options...
wpkg Posted January 31, 2008 Share Posted January 31, 2008 Read what I posted: Doubling in power is 2 * 5 watts = 10 watts' date=' which is exactly what this person wants to do. [/quote'] no. this person wants twice the volume, not twice the power. Tung said it best. Link to comment Share on other sites More sharing options...
defaced Posted January 31, 2008 Share Posted January 31, 2008 Yes, tung has it right, which is what I was attempting to point out and apparently didn't get across well enough in my first post. Let's see if this is a little more clear: + 3dB = 2 * 5 watts = 10 watts + 10dB = 10 * 5 watts = 50 watts Image source: http://www.phys.unsw.edu.au/jw/dB.html Link to comment Share on other sites More sharing options...
cGil Posted January 31, 2008 Share Posted January 31, 2008 Here's a quote from a old PCollen post from last May. I think it'll help answer a few questions here. Gil... Re: Valve Junior question (PCollen) Posted: 6:28:16 pm on 5/3/2007 Modified: Never Here are a few interesting articles, and a chart, on this subject: http://hyperphysics.phy-astr.gsu.edu/hbase/sound/loud.html http://www.phys.unsw.edu.au/jw/dB.html http://www.gcaudio.com/resources/howtos/loudness.html In summary, you have to increase power ten-fold (10dB) to achieve twice (2x) the percieved loudness. 10 watts is percieved to be twice as loud as 1 watt, 50 watts is percieved to be twice as loud as 5 watts, etc..... So, do you still think that 100 watt amp is 'the *****' ? 100 watts can get you a lot more clean headroom than 50 watts, given that you can play louder before distortion sets in, but it is NOT twice as loud.. Link to comment Share on other sites More sharing options...
schotness Posted February 1, 2008 Author Share Posted February 1, 2008 Actually its academic now. As I've gone & gotten myself a SoCal clone. I was considering running one junior on clean & one with effects applied, but then that requires even more pedals & things. Link to comment Share on other sites More sharing options...
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