Gallien Krueger 1001rb 2 pot replacement

[speakermaniac16]

Hi guys, just have a question on replacing 2 pots on my gk amp. The volume trim pot and woofer trim pot need to be replaced because they are making a bunch of crunchy noises when turned. So i have been looking all around and can't find to see some potentiometers for sale that work for this amp. Can someone please guide me in the correct direction.

Thanks in advance

 

[mmbongo]

Did you try cleaning them?

 

[B-string]

Calling is best:
G-K Parts

[email protected]

or (209) 234-7300 extension 120. 9am to 4pm PST USA
This assumes you are in the USA? Your profile doesn't say where you are located. Invalid Link Removed and Invalid Link Removed ship international I believe if you are out of the USA, you will just need to search and match.

 

[speakermaniac16]

I have cleaned them once, but that is a temporary fix, that clean lasted almost 6 months, when they get dirty you can clean them but they really will do better if replaced and when they start crackling after cleaning that means they need to be replaced. and yes I will try calling and see how their customer service is, thanks

 

[speakermaniac16]

And I am located in the US

 

[B-string]

Woofer pot: G-K # 070-1522-0 POT,2KB,7MM,KNURL,.1W SONG HUEI 16K1-B2K-L15KC
Volume pot: G-K # 070-1513-0 POT,50K-15A,7MM,KNURL,.1W SONG HUEI 16K1-A50K-L15KC

G-K's distribution agreements won't let them ship parts outside US states is the reason for the question

 

[agedhorse]

Are you sure there is no problem with the amp that is causing or contributing to these symptoms? Specifically DC offset?

"Cleaning" may appear to solve the problem until the offset continues to damage the pot farther. Your description suggests either this, or using a cleaning compound that has damaged the pot (another common cause).

 

[speakermaniac16]

I used potentiometer cleaner so I am pretty sure thats what you would use to clean them, so I don't think that it damaged them possibly and the amp is good. its just the potentiometers crack when moved and sometimes if you move the gain knob it could be at 9 o'clock, crack a little and then blast you with volume as if it was turned up all the way, that to me is a bad potentiometer. I have had this amp for 4 years and its gotten moved around for gigs and such and knobs moved from adjustment so it doesn't surprise me that they are going bad, I only have two that crackle, all the others are fine, I actually just replaced two on my bass guitar because they were getting bad and wow its amazing to not hear crackling anymore when I move a knob

 

[speakermaniac16]

And thank you B string for those numbers!

 

[agedhorse]

With the symptoms you describe, it sounds like the cleaner you used has fatally damaged your pots.

Most commercial "cleaners" are unsuitable for cleaning the vast majority of the pots used in the last 20 years. I can't tell you how many pots I have seen destroyed from otherwise well intentioned cleaning. I wish they wouldn't sell all that cleaner crap

The only material that I would ever recommend these days is Caig DeOxit, and only the tiniest amount necessary to do the job.

Once the pot is damaged, it must be replaced.

 

[S-Bigbottom]

With the symptoms you describe, it sounds like the cleaner you used has fatally damaged your pots.

Most commercial "cleaners" are unsuitable for cleaning the vast majority of the pots used in the last 20 years. I can't tell you how many pots I have seen destroyed from otherwise well intentioned cleaning. I wish they wouldn't sell all that cleaner crap

The only material that I would ever recommend these days is Caig DeOxit, and only the tiniest amount necessary to do the job.

Once the pot is damaged, it must be replaced.

^ YES! I always agree with you because, well you are always right.
This is a big one I wish was at the top of the page. I have used other brand cleaners for pots and killed 2 amps with 2 different brands of pot cleaner.
A little psst, and that is it. And the darn pot goes spinning like a top.
I only use DeOxit, and never have trouble since.

 

[Thumper19605]

Did you try cleaning them?

Good advice, then work them back and forth for quite a while and repeat cleaning with a good electrical contact cleaner.
Spraying from the front with rubber tube that fits over the shaft forcing the cleaner in from the front if you can.
If not I have found pots on Amazon of most values, good luck

 

[acmeseed]

The only material that I would ever recommend these days is Caig DeOxit

Like every company today Caig has many different flavors of this, which one do you use?

On the company's web site I see D-Series, Gold G-Series, Shield F-Series and Fader F-Series, Amazon seems to have variations of those as well. From the name it would seem the fader would be the one to use for pots. Whatever happened to just plain corn flakes?

Thanks.

 

[agedhorse]

Good advice, then work them back and forth for quite a while and repeat cleaning with a good electrical contact cleaner.
Spraying from the front with rubber tube that fits over the shaft forcing the cleaner in from the front if you can.

This is probably the worst thing you could possibly do to the pot, other than just snapping off the shaft. It is almost guaranteed to ruin the pot by stripping the lube from the bushing then contaminating the element.
Do not use generic "contact cleaners" as they can damage the resistive elements. At this point, the only material I can recommend is Caig DeOxit.

 

[agedhorse]

Like every company today Caig has many different flavors of this, which one do you use?

On the company's web site I see D-Series, Gold G-Series, Shield F-Series and Fader F-Series, Amazon seems to have variations of those as well. From the name it would seem the fader would be the one to use for pots. Whatever happened to just plain corn flakes?

Thanks.

There should be a product called "DeOxit" and I prefer the 5%. It used to be called "R5" many years ago.

 

[Passinwind]

Like every company today Caig has many different flavors of this, which one do you use?

On the company's web site I see D-Series, Gold G-Series, Shield F-Series and Fader F-Series, Amazon seems to have variations of those as well. From the name it would seem the fader would be the one to use for pots. Whatever happened to just plain corn flakes?

Thanks.

Audio/Video 9-1-1

Cleaning volume and tone controls on electric guitars, and controls on electric guitar amplifiers

 

[agedhorse]

Now called D5 (R6 solvent)

 

[Thumper19605]

This is probably the worst thing you could possibly do to the pot, other than just snapping off the shaft. It is almost guaranteed to ruin the pot by stripping the lube from the bushing then contaminating the element.
Do not use generic "contact cleaners" as they can damage the resistive elements. At this point, the only material I can recommend is Caig DeOxit.

x

ahh an engineer , whatever, been doing it for years and it works

 

[agedhorse]

Then I have been fixing your bad work for years. That's what real engineers do.

To others here, don't do it. It's a sure way to ruin your pots. Pretty much guaranteed.

 

[B-string]

Then I have been fixing your bad work for years. That's what real engineers do.

To others here, don't do it. It's a sure way to ruin your pots. Pretty much guaranteed.

Make that two of us to speak up so far.