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Topic: 500K Pot in Goodrich H10K |
Lynn Oliver
From:
Redmond, Washington USA * R.I.P.
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Posted 16 Jun 2009 9:10 am |
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I just replaced the original 10K pot in my H10K with one of Tom Bradshaw's 500K pots. I adjusted it so that the volume is not quite off when the pedal is up, but it seems that it reaches full volume at only about 1/2 the pedal's travel. The pot itself still has plenty of travel left when the pedal hits the stop.
Is this an issue with replacing the 10K with a 500K? I read here that it is ok to use a 500K in this pedal, but has anyone else tried it? |
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Rob Segal
From:
New York NY
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Posted 16 Jun 2009 10:02 am Use 250K
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The original pot in that pedal is not 500K; it's something like 250K, or even something else; but it's not 500K.
Perhaps the half-stroke taper you're experiencing is because 250 is 1/2 of 500.
Rob |
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Lynn Oliver
From:
Redmond, Washington USA * R.I.P.
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Posted 16 Jun 2009 2:23 pm
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| The original pot was 10K. |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 16 Jun 2009 4:48 pm
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If the original pot is 10k, you should (as Goodrich suggests) use something close to that - 500k is not "close" (by any stretch of the imagination  ) A 25k might work okay, as might a 50k. But 500k is pretty far out of range to expect it to work like the 10k. |
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Rob Segal
From:
New York NY
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Posted 16 Jun 2009 6:13 pm
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 ........10K, 250K, a mere trifle, a bagatelle ....... |
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Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 16 Jun 2009 8:52 pm
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I believe that Goodrich now uses 500K pots in the H10, L10's.
Jerry |
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Lynn Oliver
From:
Redmond, Washington USA * R.I.P.
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Posted 16 Jun 2009 10:24 pm
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From an ad:
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| The Goodrich 10K Volume Pedals look like the rest, but looks can be deceiving. Several features put them in a class by themselves. One important difference is that any value pot from 10K to 500K can be used if it is a high quality pot with a logarithmic or audio taper... |
I plugged the H10K into a larger amp (instead of my practice amp), and it turns out that the volume does continue to increase throughout the travel of the pedal. It's just that most of the change happens in the first half of the travel. I'll have to reinstall the old 10K pot for comparison. |
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Jack Stoner
From:
Kansas City, MO
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Posted 17 Jun 2009 2:05 am
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| A friend that lives in Michigan bought an L10K pedal from me around 2000/2001. About 2 years after he bought it he had a problem and since he was fairly close to Goodrich he took it to them and they fixed it including putting a new 10K pot in it. About 6 months later the new 10K pot failed and he was told to put a standard 500K volume pedal pot in it. He did that and it's been at least 5 or 6 years ago and no more problems and it works good with the 500K pot installed. |
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Lynn Oliver
From:
Redmond, Washington USA * R.I.P.
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Posted 17 Jun 2009 10:17 am
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Thanks, Jack. Sounds like I can eliminate changing the pot value as an issue. Perhaps I can adjust the travel a bit, or I may be dealing with user error.  |
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Brian McGaughey
From:
Orcas Island, WA USA
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Posted 17 Jun 2009 4:35 pm
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Hey Lynn,
Looks like you've got plenty of responses but I'll confirm anyway: I put a Tom Bradshaw 500K in my L10K...no problems.
Let us know what you find. |
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Tom Bradshaw
From:
Walnut Creek, California, USA
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Posted 18 Jun 2009 7:22 am Replacement Pots
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The Dunlop pots I sell have an audio taper in them. That means they are to progress from full off volume to full on in a gradual manner as the wiper inside the pot makes its way around its circular carbon grid. If it doesn't deliver that kind of response, there is something wrong with the pot and it should be returned to me for a replacement (or a refund if you feel another one would do the same).
Nothing made is always perfect. That is why I guarantee it (and everything else I sell). The Dunlop pots I sell are 470K, not 500K (not much difference one way or another).
Goodrich no longer puts a 10K pot in any of their pedals. I don't know why, but suspect that stocking two different sizes of pots was just too expensive to continue doing, and, their "10K" pedals functioned just as nicely with a 500K pot as they did with the 10K pot. They seem to function fine with my 470K pots.
I've now supplied about 1500 of the Dunlop 470K pots to users with all kinds of volume pedal brands. In all those sales, I've only had to replace about 20 of those Dunlop pots. I don't recall having to replace any a second time (but maybe my mind is failing me, like a few of my other body parts).
So, if anyone has a problem with one of my pots (or anything I sell), just let me know and I'll make it right by either replacing the defective pot or refunding your money. This has been my policy for the 45 years I've been in business. Am I nuts or what?
...Tom |
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Al Risbeck
From:
Iowa, USA
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Posted 18 Jun 2009 8:09 am dunlop pot
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I have two Goodrich pedals, an L120 and a L10K, both have Toms Dunlop pots in them and work to perfection, make sure you wire it per Tom's "smiley face" instructions and if it dosen't work I'll bet it's a rare bad pot. Tom sure takes care of his customers as most of you know, I'd return it for a replacement.
MHO
Al |
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Lynn Oliver
From:
Redmond, Washington USA * R.I.P.
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Posted 22 Jun 2009 4:38 pm
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Received a replacement pot from Tom today, and this one works just fine. Thanks, Tom!
Is there any way to make the string more secure where it anchors around the allen-head screw? Each time I replaced the pot I had a hard time getting it to where it didn't slip, and it looks like it could work loose fairly easily, even though it hasn't yet. |
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