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QSC RMX5050 pots

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dylan-penguinmedia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dylan-penguinmedia Quote  Post ReplyReply Direct Link To This Post Topic: QSC RMX5050 pots
    Posted: 15 March 2015 at 10:44am
Does anyone have a link to a suitable pot at RS or similar?
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Jimmer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jimmer Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 10:57am
I hate RMX pots! utter garbage. Sorry no help, just thought id air my opinions on them LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 11:30am
Given how they fail so readily (oxidise IIRC!), Shure Dist. have always got them in stock. I think I have a pile of them on my desk at work too.

I won't be in the office till Wednesday, and I think they are 2450, but should be same part. PM if still in need.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rigsmith_electronics Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 12:18pm
My pal droped off 7 or more QSC amps and bags of pots to my workshop last year. 

I cannot remember the exact amp. but there was different values for the same amps depending which version of the PCB it has. 

He said he got them from QSC and from memory I dont think he was ripped off. Why not call them, I think they are expecting people too do so. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRE4U2NV Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 1:57pm
pots on rmx are different across the range iirc or they dont line up with knobs one of the twoConfused
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 2:52pm
Remove from the amp.  Dismantle the pot, clean the centre silver conductive track with a bit of switch cleaner on a cotton bud, reassemble and replace, good as new!

It is somewhat annoying that it's actually the centre common contact that oxidises up, not the resistive carbon track.

The 2U amps use one type of pot, the 3U amps use another. You can interchange them but the knobs won't line up with the markings on the front panel.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dylan-penguinmedia Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2015 at 3:16pm
Thanks guys - have dropped Shure an email - didn't think it'd be something they'd be interested in supplying direct in small quantities, hence the thread. Will see what they say!

(they are a PITA though, those pots!)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRE4U2NV Quote  Post ReplyReply Direct Link To This Post Posted: 16 March 2015 at 1:05am
Originally posted by ceharden ceharden wrote:

Remove from the amp.  Dismantle the pot, clean the centre silver conductive track with a bit of switch cleaner on a cotton bud, reassemble and replace, good as new!

It is somewhat annoying that it's actually the centre common contact that oxidises up, not the resistive carbon track.

The 2U amps use one type of pot, the 3U amps use another. You can interchange them but the knobs won't line up with the markings on the front panel.


yeah thats it Clap long time since ive opened one up i knew it was something along those lines
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Badger74 Quote  Post ReplyReply Direct Link To This Post Posted: 16 March 2015 at 11:47am
Give shure a ring, always helpful.

 I need some for my 850...you've just reminded me ;)
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dylan-penguinmedia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dylan-penguinmedia Quote  Post ReplyReply Direct Link To This Post Posted: 16 March 2015 at 1:02pm
Got some winging their way to me already!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2015 at 10:16am
Pics of the offending items.

There are both B10K and B2.5K, from memeory for a mix of RMX850 and RMX1450. Seems to inply 2450, 4050 and 5050 may also have different parts.

Shure Dist would be best bet?


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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2015 at 1:22pm
I have no idea why they have two different resistance versions, I really doubt given where they're used that it makes any difference!
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