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Old 6th November 2006, 04:48 PM   #1
artale is offline artale  Italy
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Default Convert a Pass Labs x250.5 from 110v to 220v

Hi there!

I'm from Italy and I want to buy a Pass Labs X250.5 power amp from the US market (you know, it costs 40% less!)
So, is there anyone that know how and whether it's possible to convert the ampli to the EU voltage/Hertz i.e. from the 110v/60Hz to 220v/50Hz?

Thanks
-- Alex
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Old 6th November 2006, 05:54 PM   #2
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It's possible, as the amplifiers as twin 120V primariesin series for
240V and parallel for 120V. The power supply has a jumper
diagram on the board, but I recommend this only for a competent
technician, as you are dealing with hazardous line voltages.
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Old 6th November 2006, 06:19 PM   #3
Zen Mod is offline Zen Mod  Serbia
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Default Re: Convert a Pass Labs x250.5 from 110v to 220v

Quote:
Originally posted by artale
Hi there!

I'm from Italy and I want to buy a Pass Labs X250.5 power amp from the US market (you know, it costs 40% less!)
So, is there anyone that know how and whether it's possible to convert the ampli to the EU voltage/Hertz i.e. from the 110v/60Hz to 220v/50Hz?

Thanks
-- Alex

As Papa sez-it's possible;
I can give you hand with this-just organize import via Serbia,and I'll set it to 220V for ya.........and you will never see it
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Old 7th November 2006, 09:57 AM   #4
artale is offline artale  Italy
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Join Date: Nov 2006
Quote:
Originally posted by Nelson Pass
It's possible, as the amplifiers as twin 120V primariesin series for
240V and parallel for 120V. The power supply has a jumper
diagram on the board, but I recommend this only for a competent
technician, as you are dealing with hazardous line voltages.

Nelson, Thank you very much for the suggestion.
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Old 21st November 2006, 04:30 PM   #5
artale is offline artale  Italy
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Join Date: Nov 2006
Quote:
Originally posted by Nelson Pass
It's possible, as the amplifiers as twin 120V primariesin series for
240V and parallel for 120V. The power supply has a jumper
diagram on the board, but I recommend this only for a competent
technician, as you are dealing with hazardous line voltages.

Hi Nelson,

I bought the X250.5...it's wonderful!

Well, I did open it and I need some more suggestions. Do I need to move the 3 cables (orange-blue-violet) in the 3 holes down to the left (looking from the rear)? There is also a blue bridge with 3 holes and a white cable that is now in the middle hole. Or anothere blue bridge (with no cables) with just two holes down on the left. Or whatever....

Please, can you help more on this? Would it be possible to send a picture with the new connections for the 240v?

Cheers
-- Ale
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Old 21st November 2006, 06:15 PM   #6
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The voltages are changed at the hard-to-get-to place on
the board with a silk screen diagram and white jumpers
(this would be the older board - the latest one has neat
Thermistor jumpers, laid out by moi). You do not alter the
colored transformer leads.
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Old 29th November 2006, 06:44 PM   #7
artale is offline artale  Italy
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Join Date: Nov 2006
Quote:
Originally posted by Nelson Pass
The voltages are changed at the hard-to-get-to place on
the board with a silk screen diagram and white jumpers
(this would be the older board - the latest one has neat
Thermistor jumpers, laid out by moi). You do not alter the
colored transformer leads.

Hi Nelson,

I followed your suggestion and I went to a Pass Labs service here in Italy. Well, they have been not able to convert the ampli. Actually, they showed me that the trasformer has just 3 cables for the primaries for 0/100/120 volts, respectively. There, other 3 holes (0/100/120v) but there are no cables. So, it's no possible to put the primaries in series to get the 240v. Are they correct? What can we do? You mentioned about the "Thermistor jumpers". What should we do with this Thermistors? If you give me more details I'll pass them to the technician. Just for your information, the toroidal number is 13-7-05, the serial number of the X250.5 is S/N-16425.
Thanks for any help,
-- Ale
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Old 29th November 2006, 07:28 PM   #8
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That's interesting - I was informed that we had not shipped
120V-only primaries. You will need a replacement transformer.
I suggest you have the service shop contact peter@passlabs.com
to arrange for one.

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Old 29th November 2006, 08:09 PM   #9
artale is offline artale  Italy
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Join Date: Nov 2006
Quote:
Originally posted by Nelson Pass
That's interesting - I was informed that we had not shipped
120V-only primaries. You will need a replacement transformer.
I suggest you have the service shop contact peter@passlabs.com
to arrange for one.


Gasp!!!!
Ok. I'll conctanct right away "peter" and tomorrow morning I'll inform the service shop. I need to check how it will cost the replacement
Thanks,
-- Ale
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Old 29th November 2006, 08:25 PM   #10
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Sorry. Since I mis-informed you, cost on our end will only
be shipping.

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