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Can one retune an electric organ easily?

Nick 07 Jul 14 - 12:07 PM
selby 07 Jul 14 - 12:29 PM
GUEST,Ed 07 Jul 14 - 12:51 PM
GUEST 07 Jul 14 - 12:58 PM
GUEST 07 Jul 14 - 02:38 PM
Nick 07 Jul 14 - 03:11 PM
Leadfingers 07 Jul 14 - 04:39 PM
GUEST,leeneia 08 Jul 14 - 08:33 AM
Nick 08 Jul 14 - 09:49 AM
GUEST,leeneia 08 Jul 14 - 11:10 AM
Nick 08 Jul 14 - 11:21 AM
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Subject: Can one retune an electric organ easily?
From: Nick
Date: 07 Jul 14 - 12:07 PM

I have a remarkably ancient Electric keyboard that I bought for £8 (a GEM electric organ that was probably on sale in Faraday's time) and which I use occasionally for working odd things out. (And sometimes just to make terrible noises with an atrocious brass sound over a very synthetic bossa nova drums rhythm just to torture myself and the neighbours).

But it is curiously tuned which is a little annoying. The A is not 440Hz but 433Hz (might be 432Hz) which is an odd choice as I can't believe that it is an organ that was targeted towards early music lovers.

I know it begs the question of why not set fire to it or give it to a worthy cause...

But is there a way to change it so that I can use other things that I have that are in 'normal' tuning.

I was hoping that there might be a switch or something inside that I could easily fiddle wth to up it to 440z? It seems odd that it would be gradually getting flatter over time.

It is ALL the keys. The thing is in tune with itself (relatively) so it suggested to me that there might be an overall tone generator that might be 'tweakable'.

I thought I would ask before I take it to bits an electrocute myself experimenting.


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Subject: RE: Can one retune an electric organ easily?
From: selby
Date: 07 Jul 14 - 12:29 PM

As it is electronic you will be able to tune it both in the music sense and electronic sense. Electronic components do "age/decay"and it will probably need retuning electronically, finding the "pot" to do that is the key, I would suggest that either on the front somewhere there is a tuning pot, or on a master board within the keyboard it will be dead easy once you locate it.
Keith


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Subject: RE: Can one retune an electric organ easily?
From: GUEST,Ed
Date: 07 Jul 14 - 12:51 PM

This might help


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Subject: RE: Can one retune an electric organ easily?
From: GUEST
Date: 07 Jul 14 - 12:58 PM

There are tons of discussions about this on the web. Try Googling "retune electronic keyboard".


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Subject: RE: Can one retune an electric organ easily?
From: GUEST
Date: 07 Jul 14 - 02:38 PM

Clive at number 2 down our street tunes organs for the rich and famous.


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Subject: RE: Can one retune an electric organ easily?
From: Nick
Date: 07 Jul 14 - 03:11 PM

Thanks all - I'll get the screwdriver out

If I'm not back tomorrow send out a search party.

Which one is the Live wire again? :)


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Subject: RE: Can one retune an electric organ easily?
From: Leadfingers
Date: 07 Jul 14 - 04:39 PM

Is it 'electronic' , or a wind blown job ?   IF its windblown , the blower might be running slow

And if it IS electronic , it may well only have a single tone generator and a set of frequency splitters , rather than a board for each basic note


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Subject: RE: Can one retune an electric organ easily?
From: GUEST,leeneia
Date: 08 Jul 14 - 08:33 AM

Excellent question, Leadfingers.

Nick's question intrigued me, so I decided to browse the net and see what I could learn. I learned the usual - that there are sites that pretend to deal with the issues, but the info is incomplete, confusing, or not there at all.   

Nick, I suggest you just hire somebody to fix the organ. You got a nice instrument for only 8 pounds, so put another 75 in it and avoid electrocution.

PS We are not deceived. We know you enjoy playing to the bossa nova beat. And why shouldn't you?


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Subject: RE: Can one retune an electric organ easily?
From: Nick
Date: 08 Jul 14 - 09:49 AM

I haven't yet got round to opening it up but I have a healthy respect for electricity since the time I managed to attach the mains to a speaker wire on an old record player. I have also seen someone holding a live amplifier in his two hands which was ... interesting. Luckily someone was there to turn it off or he would no longer be with us.

Organs/keyboards are ludicrously cheap here so it was probably a rash buy at £8. It definitely is not worth spending another penny on.

My guess is as per Leadfingers that it may have a single generator set wrong.

We'll see when Dr Nick M.D gets the operating gown on and gets down to surgery


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Subject: RE: Can one retune an electric organ easily?
From: GUEST,leeneia
Date: 08 Jul 14 - 11:10 AM

The worth of the organ isn't the issue. The worth of YOU is the issue. There can be a broken wire (or something similar) inside that instrument, and it could give you a 220 volt shock.

Have you ever had a course in electronics? Do you own a circuit tester? Dish!

Let me tell you a story about my brother's friend Henry. One day Henry tried to move a coffee maker at his place of employment. (Henry was 35 - 40 years old at the time.) The coffee maker was turned off, and it was plugged into good wiring with circuit breakers or fuses. Yet inside it was a broken wire, and it gave Henry a shock so bad that his heart stopped beating and he collapsed.

Fortunately his co-workers called for help, and EMT's got his heart going again.

Back to the organ. Has it got a broken wire that you might touch? Have mice chewed on it? Has some tinkerer interfered with it? Has it been stored in the heat and cold (say in a garage) and been allowed to deteriorate? You don't know.

If nothing else, get a buddy, somebody knowledgeable who will work with you. You can reward him with a nice dinner and some bossa nova music.


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Subject: RE: Can one retune an electric organ easily?
From: Nick
Date: 08 Jul 14 - 11:21 AM

Thank you for your concern :)

As Health & Safety rep at work I should know better


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