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Author Topic: Correction  (Read 6337 times)
dotyduke
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« on: July 30, 2008, 11:58:45 PM »
On the ceriatone web site there is a picture of a completed overtone with the ohm switch wired backwards.  The orange wire is in the 4 ohm spot and the green wire is in the 16 ohm spot.  Correct me if I'm wrong.  This is a pic from the ceriatone site:
« Last Edit: July 31, 2008, 12:00:52 AM by dotyduke » Logged
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nickm57
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« Reply #1 on: July 31, 2008, 10:33:14 AM »
Any way of checking with a multimeter?
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dotyduke
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« Reply #2 on: July 31, 2008, 12:09:55 PM »
Quote from: nickm57 on July 31, 2008, 10:33:14 AM
Any way of checking with a multimeter?
You can check with a meter but you can see in the pic that it is in the 4 ohm position if it was wired correct Shocked
« Last Edit: July 31, 2008, 12:18:41 PM by dotyduke » Logged
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nickm57
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« Reply #3 on: July 31, 2008, 01:24:24 PM »
I was not sure how to check with the multimeter.
I've just built mine but can't remember what diagram I used to wire it. But I get 0.9 1.0 1.2 ohms on the ot on 4 8 16 settings. This sound right?

But I think the pic is right. It shows the orange wire of the ot (16 ohm tap ) engaged. the other orange wire is the common to the speaker jack.
The switch would be turned to the right (facing the back of the amp) to 16ohm ...toward the foot switch jack.
I had more problems with the foot switch and defeat switch wiring.... 
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dotyduke
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« Reply #4 on: July 31, 2008, 08:29:51 PM »
Quote from: nickm57 on July 31, 2008, 01:24:24 PM
I was not sure how to check with the multimeter.
I've just built mine but can't remember what diagram I used to wire it. But I get 0.9 1.0 1.2 ohms on the ot on 4 8 16 settings. This sound right?

But I think the pic is right. It shows the orange wire of the ot (16 ohm tap ) engaged. the other orange wire is the common to the speaker jack.
The switch would be turned to the right (facing the back of the amp) to 16ohm ...toward the foot switch jack.
I had more problems with the foot switch and defeat switch wiring.... 

Yes but if you look at the back panel of the amp in the pic, it will show 4ohms
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dotyduke
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« Reply #5 on: July 31, 2008, 08:39:26 PM »
Quote from: dotyduke on July 31, 2008, 08:29:51 PM
Quote from: nickm57 on July 31, 2008, 01:24:24 PM
I was not sure how to check with the multimeter.
I've just built mine but can't remember what diagram I used to wire it. But I get 0.9 1.0 1.2 ohms on the ot on 4 8 16 settings. This sound right?

But I think the pic is right. It shows the orange wire of the ot (16 ohm tap ) engaged. the other orange wire is the common to the speaker jack.
The switch would be turned to the right (facing the back of the amp) to 16ohm ...toward the foot switch jack.
I had more problems with the foot switch and defeat switch wiring.... 

Maybe I'm wrong but I could sware the amp got louder when I switched to 4 ohms.  I will check this out.
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nickm57
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« Reply #6 on: July 31, 2008, 11:45:43 PM »
in the ceriatone pictures?
the wiper on the switch moves in  parallel to the knob.
both point up. The picture you posted the wiper is to the left. If you look at the back panel of the amp the knob will be to the right toward 16ohm.
« Last Edit: August 01, 2008, 08:18:05 AM by nickm57 » Logged
dotyduke
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« Reply #7 on: August 01, 2008, 04:14:34 PM »
That is correct but I think the transformer was wired internally backwards.  On my amp going into a 16 ohm cab, with the switch set to 4 ohms is louder than when it is set to 16 ohms.  The orange wire should be 16ohm and the green 4 ohm but I think the color code is wrong. Huh?
« Last Edit: August 01, 2008, 04:20:17 PM by dotyduke » Logged
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