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Topic: Flutter in Standel Custom 15 Transistorized |
Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 7 Feb 2010 1:31 pm |
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When I play a note or notes and let it die out as the sound is disappearing it is replaced with a flutter. Would one of you electronics guys have any idea what might be causing this? It is a '62 Standel with I think solid state preamp and tube power amp
Thanks,
Jerry |
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Buddy Castleberry
From:
HAWKINSVILLE GA USA - R.I.P.
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Posted 7 Feb 2010 4:32 pm
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jerry sounds like speaker coil sticking
want to sell it |
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Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 9 Feb 2010 7:31 am
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| TTT |
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Michael Brebes
From:
Northridge CA
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Posted 9 Feb 2010 1:19 pm
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Could be bad electrolytics in the power supply.
_________________
Michael Brebes
Instrument/amp/ pickup repair
MSA D10 Classic/Rickenbacher B6/
Dickerson MOTS/Dobro D32 Hawaiian/
Goldtone Paul Beard Reso
Mesa Boogie Studio Pre/Hafler 3000
RP1/MPX100 |
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Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 12 Feb 2010 7:36 am
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| TTT |
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Mike Wheeler
From:
Delaware, Ohio, USA
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Posted 13 Feb 2010 8:49 am
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I agree with Michael. Weak filter caps can cause the primary DC voltage to have a ripple...which would be most noticeable at low volume. Being it's a 1962 amp, it's most likely time for new caps, Jerry.
_________________
Best regards,
Mike |
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Jay Fagerlie
From:
Lotus, California, USA
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Posted 13 Feb 2010 10:24 am
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A great test to see if the filter caps are leaking is to play a G# on the low strings (6th string at the 4th fret on a standard guitar) and slide it up to the A
If you have PS ripple you should hear the note beat against the ripple as you slide.
Once you hear it, you'll know it.
Jay |
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Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 14 Feb 2010 3:18 pm
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Jay, I guess I am dense but I don't understand what you are telling me. What do you mean by PS. Please give me more detail as I am very interested in trying to find the problem.
Jerry |
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Jay Fagerlie
From:
Lotus, California, USA
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Posted 14 Feb 2010 3:44 pm
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Hey Jerry,
PS- power supply.
Here's the low-down....
If your filter caps in the power supply are having problems, they will lose the ability to filter out the ripple of the power supply.
This ripple will become part of the notes you are playing, so if you play a note that is close to a harmonic of the power supply ripple frequency, it will show itself as an audible beat in what should be a singular tone.
I have found that on a standard guitar, the easiest place to hear the beat is play the 6th string, 4th fret (G#), and while the note is decaying pull the string towards the floor to bend it to the A.
If you have some ripple sneaking in, you will hear it as a beat on the note.
Try it and see what you hear.
Jay |
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Bill Crook
From:
Goodlettsville, TN , Spending my kid's inheritance
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Posted 15 Feb 2010 3:53 pm
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| Quote: |
| pull the string towards the floor |
What does this mean ??
1. Pull down on the string (to raise the tone  somewhat)
2. or What ?????
I'm at lose here.
Pleas help a dummy understand |
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Jay Fagerlie
From:
Lotus, California, USA
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Posted 15 Feb 2010 6:53 pm
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Bend that note Bill!!!
Raise it up to an 'A'....slowly...
The harmonic sits in between those notes.
If you indeed have some ripple, it will be apparent.
If you do not hear it-chances are you do not have a ripple problem.
Jay |
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John Billings
From:
Ohio, USA
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Posted 16 Feb 2010 12:19 pm
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I used to have a Ripple problem! Got it smoothed out though!
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Herb Steiner
From:
Briarcliff TX 78669, pop. 2,064
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Posted 20 Feb 2010 11:27 pm
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Jerry
I have an amp exactly the same as yours. There are no schematics available and it takes an amp expert with background to work on these things. Contact me by phone or email and I will tell you about what I've lately had done to my Custom.
_________________
My rig: Infinity and Telonics.
Son, we live in a world with walls, and those walls have to be guarded by men with steel guitars. Who's gonna do it? You? You, Lt. Weinberg? |
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Walter Bowden
From:
Wilmington, North Carolina, USA
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Posted 21 Feb 2010 6:34 pm
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Hey Jerry. Do you play the steel/amp in the same room as a computer/monitor and other electronic stuff? It sounds like a problem I ran into and I turned everything off except for the amp and the fluttering/warbling went away and the steel sustained very clean. Just an idea. Go Hogs!
Walter
_________________
Emmons S10, p/p, Nashville 112, Zion 50 tele style guitar, Gibson LP Classic w/Vox AC30, Fender Deluxe De Ville and a Rawdon-Hall classical |
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Kerry Johnson
From:
the Bay Area, CA
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Posted 21 Feb 2010 8:47 pm Standel
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Jerry ... have you tried connecting the amp to another speaker to see if it still does the flutter? If the amp still flutters with the other speaker it could potentially be crossover distortion.
You can also call Danny at Standel: http://www.standelamps.com/support/contact/index.html
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