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Post new topic Best tone circuit for Stringmaster (wah effect)
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Author Topic:  Best tone circuit for Stringmaster (wah effect)
Alex Cattaneo


From:
Quebec, Canada
Post  Posted 19 Oct 2011 6:58 am    
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Hi guys,

I'm about to rewire my 1955 D8 Stringmaster and I'm wondering what is the best tone circuit to really nail that classic "oooh wah" effect that many great steelers use (Vance Terry, Kayton Roberts, Noel Boggs just to name a few). I currently have a 1M linear tone pot in there and it really doesn't do it for me... but maybe I've got it wired wrong...
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Jack Aldrich

 

From:
Washington, USA
Post  Posted 19 Oct 2011 12:20 pm    
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The effect is produced by moving the volume knob or using a volume pedal. The volume knob on a Stringmaster is below the plate on the lower neck of my double and single 8's, and I can just barely reach it if I pick close to the plate, below the bridge pickup. It's easier on my Rick S6, because the knob is beside the strings up the neck from the pickup. I have noticed that Jerry Byrd used a volume pedal for that effect. He kept his foot off the pedal unless he wanted the "wah wah effect".
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Brian Hunter


From:
Indianapolis
Post  Posted 19 Oct 2011 2:19 pm    
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Nope. It's the tone knob. A volume knob would only do swells. A one meg or 500k pot would be fine but you will want audio taper. At least that's how I like mine. For a tone cap, try something dark like a .047. This works really well for me and I read that a lot of the old timers liked that value of a cap. Sounds good!
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Larry Robbins


From:
Fort Edward, New York
Post  Posted 19 Oct 2011 5:02 pm    
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yep...what Brian said.. Smile its the tone knob.
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Billy Tonnesen

 

From:
R.I.P., Buena Park, California
Post  Posted 19 Oct 2011 6:55 pm    
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Use the Tone Control with a POT with a fast taper. Find an old Fender tall knob with the rouqh finish.
This produces what I remember was called the Doo-Wah effect. I think Leon McCaullif used this on some early Bob Wills recordings in the early 40's.
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Jack Aldrich

 

From:
Washington, USA
Post  Posted 19 Oct 2011 8:28 pm    
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Dummy me! I knew that! The tone pot on a Stringmaster is next to the volume control - still hard to reach. - Jack
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Twayn Williams

 

From:
Portland, OR
Post  Posted 20 Oct 2011 11:31 am    
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Make sure to keep your volume knob wide open when going for the boo-wah effect.

The amp you're playing through will also make a difference. I find the effect is a bit weak with a Fender Blackface tone stack. Something at least vaguely tweedish ought to work fairly well.
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Alex Cattaneo


From:
Quebec, Canada
Post  Posted 22 Oct 2011 7:35 am    
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Thanks guys!
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John Bushouse

 

Post  Posted 23 Oct 2011 9:49 pm    
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When I pulled apart my Fender Deluxes from 1946/47, I noticed that the pots were 1M and the caps were 0.1pf, rather than the 0.047pf Brian mentions. This allows you to get a LOT darker of a sound. One of the Deluxes is an "organ button" model, which (if it worked) adds in a 0.1pf cap independent of the tone control.
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Brian Hunter


From:
Indianapolis
Post  Posted 25 Oct 2011 2:26 am    
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Hmmmm...I may need to try that.
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Charlie Vegas


From:
Tampa Bay, FLA, USA
Post  Posted 25 Oct 2011 4:04 am    
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Twayn Williams wrote:
Make sure to keep your volume knob wide open when going for the boo-wah effect.

The amp you're playing through will also make a difference. I find the effect is a bit weak with a Fender Blackface tone stack. Something at least vaguely tweedish ought to work fairly well.

Mind you I don't have a Fender but I' have no problem getting my Supro steels to do the boo-wah effect regardless of volume setting or amp.
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Jerome Hawkes


From:
Fayetteville, North Carolina, USA
Post  Posted 25 Oct 2011 7:03 am    
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i just picked up a Ric sw-6 from 1953 - oh my, i dont know what the values are but that is the only tone control i've ever used that worked for the wah thing the way it should - its beautiful - goes to full on at about 2-3 whereas the fenders and others take at around 3-4 - enough difference between easily useable and not - just a quick turn and back with the pinky. it seems like on the fender it takes my entire pinky from palm to tip of finger to get it, verses just a twist of the wrist with the Ric.
i need to pull it and find out so i can do that to my clinesmith.
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Alex Cattaneo


From:
Quebec, Canada
Post  Posted 26 Oct 2011 2:46 pm    
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I tried various pots and caps this afternoon, and finally settled for a 250k audio taper with a 0.022uf cap. It's a standard setup for single coil pickups. Funny thing is it works really well on my lower neck (C6) but not so much on the upper one (E13). I have no idea why, but both necks have a very different tone. Go figure...
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Danny Hammers


From:
Danny & Patricia of Floral City, Florida formerly of Fairdale KY.
Post  Posted 26 Oct 2011 5:51 pm    
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This is what I used

Go down to the 5th video title "Billy & Lynn Owsley Playing My New Steel Guitar" Lynn setting at the guitar in the picture, on this page

http://www.w4mop.com/my_youtube_channel.htm

Then after you start the video, run the time up to 13mins 30seconds

If you like that tone control let me know and I will send you the wiring diagram and parts list.

I found the knob size maked a big change in the feel.

Good luck


Musically
Danny

Danny Hammers
7122 S. Duval Island Drive
Floral City, FL 34436-2434
Phone 352-860-0155
Web www.DannyHammers.com
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Alex Cattaneo


From:
Quebec, Canada
Post  Posted 26 Oct 2011 6:51 pm    
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That's very cool Danny! Very curious to know what your trick is!
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