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Old 16th May 2010, 06:42 PM   #1
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Default potentiometer for cyrus2

can anyone help locate a volume/balance pot for a late cyrus2 amp. its made by alps with a 100KW, 10KB,. If i cant find one i'm going to sell all my cyrus stuff and start a new project. Please help.
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Old 16th May 2010, 07:53 PM   #2
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Have you tried Mission/Cyrus themselves? These potentiometers were most likely specially made by Alps for Mission/Cyrus, so will be quite hard to come by otherwise.
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Old 17th May 2010, 02:12 AM   #3
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An Alps Blue will fit (just) but you will lose the IMHO unnecessary balance control.
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Old 17th May 2010, 12:48 PM   #4
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thanks for the info lads. the Alps Blue seems the obvious route as i dont use the balance control anyway, but where is the best place to source one. By the way Martin, dont you sleep at night, i'm zonked at that time in the morning.
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Old 19th May 2010, 03:52 PM   #5
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Quote:
Originally Posted by cyrusnut View Post
thanks for the info lads. the Alps Blue seems the obvious route as i dont use the balance control anyway, but where is the best place to source one. By the way Martin, dont you sleep at night, i'm zonked at that time in the morning.
AH! Couldn't sleep and then your post came up on my phone as I was plugging it in for the night... couldn't resist replying.

Not sure where to get them but I'm sure Google will know. I had to really bend the legs to fit and add a coupler to make it all fit together. See below.....

Quote:
Originally Posted by Sonusthree View Post
Hello,
I installed an Alps Blue into my latest model Cyrus 2.
It took some careful pin bending but it did work and the results were VERY worthwhile in my case. I suppose that the improvements depend on the condition of the orignal Alps pot. Mine was not scratchy at all but I still found an increased transparency with the new Blue.

I used a kind of coupler that I got from Ebay a while ago but I can't remember the proper name for it. I have seen them in electronics catalogues before. They are aluminium and secured by 2 screws at either end and mate very securely to the Alps Blue. Let me know if you decide to use these and can't find them. I'll look harder or may even have a spare one somewhere.

I didn't extend the existing shaft much but used the original which I cut slightly so that I had the correct diameter hole.

I glued some very stiff black rubber tubing inside the original shaft which then joins to the 'coupler'. The rubber has not been very durable mainly because I am always removing it for mods and repairs to the amp. I would recommend a small piece of metal here for longevity.
I will be changing mine soon but this isn't urgent.
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File Type: jpg volume pot.jpg (93.3 KB, 193 views)
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Old 21st May 2010, 11:21 AM   #6
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Hi Sonus, thanks for the reply. I've had a good look at the mod, and with the comments on the sound improvement i am going that route. I'll give my cyrus man a tinkle tomorrow, aka john caswell, {absolutely brill} with cyrus gear, and get him to do the biz. cheers
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Old 21st May 2010, 12:10 PM   #7
D!g!TaL is offline D!g!TaL  Scotland
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I am also going to go with the mod suggested by Sonusthree.
Mission/Cyrus were very helpful but stated that the Alps combined volume/balance pot had long since been discontinued, and they had no more spares.
I never use the balance pot, but the volume section is now quite crackly and does not respond to cleaning.
The Alps Blue should be a worthwhile mod.
Regards, Ian
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Old 27th May 2010, 03:05 AM   #8
markmay is offline markmay  United States
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Don't know if you found the Alps pot yet for the price that your willing to pay. I got one at Mouser Electronics online. They shipped and I had it in two days. Best prices that I could find by far.
Mouser Electronics - Electronic Component Distributor
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Old 31st March 2012, 02:51 PM   #9
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Default Volume pot

Can someone help me? My volume pot I think is at fault aswell.on the firstfew notches of volume left speaker comes on then the next both are on. I think they are balanced ok when both speakers are on. I fully recapped amp what with the age but this improved the sound loads but still got problem with volume pot.? Or is it?? Anything else I can check ? Or if it is volume pot can some one send me a link of wer I can get one. Not bothered about loosing the balance control!!
Thanks loads
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