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Topic: Growling Fender ? Help |
Joe Eisenhart
From:
Pennsylvania, USA
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Posted 4 Feb 2007 12:17 am |
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Well my Sho Bud 6139 (original pick up) is now voicing through a 1970 Fender Pro Reverb (original Fender speakers). Both have been recently gone over / refurbished, and certified sound, am also using a quality cable (3" Monster) w, gold jacks. Now, as the volume is turned up on the amp a growling hum appears just below 2, and intensifies as the vol is increased. Do you guys think the guitar is to close to the amp, being just a feedback issue or any suggestions to find problem. This is my 1st amplified guitar so I would love to be told it's a simple answer.....even ribbed a bit if it is  . Any ideas appreciated here. Thanks,......Joe |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 4 Feb 2007 6:03 am Re: Growling Fender ? Help
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"Growling" is usually caused by an inter-amp feedback loop that's set up by bad bypass capacitors. If the noise changes frequency as you change the volume or reverb control, that's your problem. Bypass caps are cheap and easy to replace.
| Joe Eisenhart wrote: |
| ...am also using a quality cable (3" Monster) w, gold jacks. |
Oh yeah, give away those "monster" cables (hype, mostly), and get some George-L cables. Electrically, they're far superior to those garden-hose look-alikes. |
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Jim Sliff
From:
Lawndale California, USA
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Posted 4 Feb 2007 8:33 am
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Donny beat me to it, but it sure sounds like bypass caps.
And yes - take that Monster cable and use it as a dog leash. Most over-hyped, overpriced cables on the market. $7 Carvin cables have rated higher as far as sound. As Donny said, get George L cables - best cable and easiest to maintain, and a fraction of the cost of Monster's stuff.
_________________
No chops, but great tone
1930's/40's Rickenbacher/Rickenbacker 6&8 string lap steels
1921 Weissenborn Style 2; Hilo&Schireson hollownecks
Appalachian, Regal & Dobro squarenecks
1959 Fender 400 9+2 B6;1960's Fender 800 3+3+2; 1948 Fender Dual-8 Professional |
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Jay Ganz
From:
Out Behind The Barn
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Posted 4 Feb 2007 9:22 am
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Does the amp do it with nothing plugged into it?
If not, then the amp might not be the problem. |
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Joe Eisenhart
From:
Pennsylvania, USA
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Posted 4 Feb 2007 1:44 pm
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| Thank you Jay, why didn't I think of that, duh! With nota plugged in, wide open, No growl. Strat plugged in , on 10. no growl. Nice and clean w/ the Stratocaster. Sho Bud plugged in, growling starts at 2 and increases as the amp volume is increased. I'll try another amp tomorrow. Lord I hopr it's not that Bud..........Joe |
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Jon Light
From:
Saugerties, NY
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Posted 4 Feb 2007 1:53 pm
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Try input #2 (not channel #2--input # 2 on either channel.) It is attenuated. Your pickup could be overpowering the front end of the amp.
Also--for general information, is the problem identical in both channels? |
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Jay Ganz
From:
Out Behind The Barn
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Posted 4 Feb 2007 1:55 pm
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Alot easier than changing bypass caps 
My old Sho~Bud never over powered any Fender amp.
Especially with original pickups. Maybe some of the newer
Humbuckers might do that though.
Pull the chord out of the Bud and plug it into the Strat
going through the same volume pedal etc. as the Steel.
Still growlin'  |
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Joe Eisenhart
From:
Pennsylvania, USA
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Posted 4 Feb 2007 3:06 pm
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| Both inputs on both channels give the same static hum. The Strat will hum at high volume, but not nearly as bad as the Bud on very low volume. One more thing when I first turn the amp on and the volume up ,no hum, until the amp is on for about 10 seconds, then a steadily increasing hum. I've also noticed that until you reach 2 on the volume knob, no guitar sound. As soon as you get guitar sound through the amp, you get the hum w/ the Bud, but no hum w/ the Strat, till 7 on volume. Hope these observations are helping and not clouding the issues. Thank you for your diagnostic ideas.........Joe |
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Joe Eisenhart
From:
Pennsylvania, USA
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Posted 4 Feb 2007 3:18 pm
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| Late breaking news. If I plug the jack of a cable into the amp, any input or channel, I get the same growling hum, growing w/ volume increase ,without the other end of the cable plugged into any instrument??? |
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Jay Ganz
From:
Out Behind The Barn
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Posted 4 Feb 2007 3:19 pm
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Well naturally you'll get a hum if the cord isn't connected to anything. 
That'll happen with any amp  |
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Joe Eisenhart
From:
Pennsylvania, USA
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Posted 5 Feb 2007 1:45 pm
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| Well guys, I brought in another amp today and same hum. Sadly, I'm afraid the problem is in my steel, I'll need to get it checked locally for a short or grounding problem. Many thanks to those that offered assistance here........Joe |
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