Arcam Alpha 8 conversion from 220v to 115v - diyAudio
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Old 15th January 2011, 07:17 PM   #1
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Default Arcam Alpha 8 conversion from 220v to 115v

I want to change my Arcam Alpha 8 amp back to run on 115v. I switched it to 220v while I was living in the UK but now back in Canada need to switch it back to 115v. Except I forget what the original fuse arrangement was. It's presently configured for 220v. There are 2 fuse holders located behind the power switch. The fuse holder closest to the front panel has a fuse in it. The holder behind is empty. There is also what appears to be a spare fuse sitting in a little clip nearby. Do I simply move the fuse from the first holder to the second? Or do I add the spare fuse to the empty fuse holder? Anybody know? I emailed Arcam but they're taking their time in responding! Thanks! Joel
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Old 18th January 2011, 08:03 AM   #2
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Arcam rarely respond to e-mails. Better to phone them.
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Old 18th January 2011, 08:33 AM   #3
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Try looking at the Arcam 10 circuit diagram.

http://www.acousticpsychos.com/Files...10P-pwr-sm.pdf

Although different they may use similar topology.

There seems to be a link that needs to be moved as well as changing the fuse configuration.
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Old 18th January 2011, 08:48 AM   #4
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In the Arcam 8P there are two fuses:

SELECT VOLTAGE
BY FITTING FS201 (240V)
OR FS202 (115V)

The circuit diagrams are already listed under Solid State.
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Old 18th January 2011, 09:09 AM   #5
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Thanks Andy. I will check out your suggestions.
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Old 18th January 2011, 04:05 PM   #6
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For those who cant seem to find the link.

Here is the Mains Input part of the 7R, 8R and 8P power amplifiers.

Click the image to open in full size.
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Old 18th January 2011, 04:21 PM   #7
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Quote:
Originally Posted by Andy5112405 View Post
Try looking at the Arcam 10 circuit diagram.

http://www.acousticpsychos.com/Files...10P-pwr-sm.pdf

Although different they may use similar topology.

There seems to be a link that needs to be moved as well as changing the fuse configuration.
If you look closely they are VERY VERY similar. Just use one of the two fuse positions in the 10P as well.
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