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Topic: Freq. question |
Jon Light
From:
Saugerties, NY
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Posted 10 Jul 2004 10:59 am |
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I'm playing with the tone stack on one channel my Deluxe Reverb. Did a couple of things that sound decent but I have created a particular problem----
it sounds as if I've got a bump right around my third string--it jumps out with way too much zing (this is specific to this amp, this channel, this component selection--not usually an issue before now). Can't use the Duncan calculator unless I know where the 3rd string lies in the spectrum. Anyone have an answer? |
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William Peters
From:
Effort, Pennsylvania, USA
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Posted 10 Jul 2004 11:17 am
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Jon,
If my calcs are correct, the 3rd G# string lies at about 400 hz played open.
String 8 (E) is about 160hz, String 4 (E) is about 320 hz, and for each half step up you go up requires multiplying by the 12th root of two. So going 4 halftones, the mulitiplier would be 1.26. So 320 times 1.26 gives 403... call it 400 which is close enough for calculating tone stack elements.
Edited to make sense 
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Bill
http://www.wgpeters.com
Cougar SD-10, PV-260, Tubefex, PV TNT-115, Gibson SG, Squier P-Bass, Berhinger V-amp Pro
[This message was edited by William Peters on 10 July 2004 at 12:19 PM.] |
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Jon Light
From:
Saugerties, NY
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Posted 10 Jul 2004 11:30 am
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| William--frankly, I won't attempt to follow your reasoning as to why----why ask why? I'll take your conclusion and run with it. Thanks! |
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Tom Gorr
From:
Three Hills, Alberta
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Posted 10 Jul 2004 12:55 pm
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Given that "Concert A" is 440 Hz, my guess would be that the 3rd string G# is likely in the higher octave, which would put it around 800 Hz.
Interestingly, thats the frequency that most of us dial out a bit using our parametric EQ to get a more tolerable tone....
Also, I think I recall that some guitar speakers have a mid freq hump somewhere in the high hundreds. Maybe yours is at 800 Hz. |
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Jon Light
From:
Saugerties, NY
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Posted 10 Jul 2004 1:02 pm
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With sincere appreciation to William, after thinking about it some, I have to agree that there is something fundamentally wrong with that calculation. With talk about mid-frequency humps in the 500-800 range it seems to be in the wrong range for this, the highest string on our steels.
The speaker in question is a Weber California--a relatively flat responding speaker. But more to the point, this wasn't an issue until now. I've pretty much sweetened up the rest of the spectrum with these tweaks but the high end definitely needs some tailoring. Lacking specific data I'll use the shotgun method and njust change out components and let my ears guide me. |
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William Peters
From:
Effort, Pennsylvania, USA
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Posted 10 Jul 2004 1:18 pm
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Sorry guys,
440 Hz is the first fret on the 3rd string. I checked it with a tuning fork, and an electronic tuner.
The bottom string on a six string guitar is low E, and is approx 80 hz. The 8th string on an E9 steel is one octave above that, or 160 hz. The fourth string is E one octave higher, which makes it 320 hz.
I stand by my calculations..... 400 hz. 800 Hz is approximately the 3rd string at the 12th fret.
Perhaps you are misinterpreting your observation, and really are hearing an extra loud harmonic of the string, which would be in the 800hz range. You asked for the frequency of the string, meaning fundamental frequency.
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Bill
http://www.wgpeters.com
Cougar SD-10, PV-260, Tubefex, PV TNT-115, Gibson SG, Squier P-Bass, Berhinger V-amp Pro
[This message was edited by William Peters on 10 July 2004 at 02:26 PM.] |
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Jon Light
From:
Saugerties, NY
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Posted 10 Jul 2004 1:24 pm
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| Yep--I just thought to check---I've got a metronome that gives you an A 440 and it lines up with my 3rd string w/pedal. There you go. You got it, William. |
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William Peters
From:
Effort, Pennsylvania, USA
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Posted 10 Jul 2004 1:26 pm
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Jn,
Math comes through again!
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Bill
http://www.wgpeters.com
Cougar SD-10, PV-260, Tubefex, PV TNT-115, Gibson SG, Squier P-Bass, Berhinger V-amp Pro
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Tom Gorr
From:
Three Hills, Alberta
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Posted 10 Jul 2004 1:28 pm
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| Does it line up in the same octave? |
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Jon Light
From:
Saugerties, NY
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Posted 10 Jul 2004 1:32 pm
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| Yep. |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 10 Jul 2004 5:19 pm
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| Lower the pickup. |
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