Accuphase E-260 Voltage Conversion (100V to 230V)
I have an Accuphase E-260 Int. Amplifier wired for 100V wall outlets. I am trying to convert it to 230V. From various threads on this forum, I could figure out that this unit has quick connect terminals for winding wires. It was less daunting to find that out!
Can somebody pls help with it's 230V wiring diagram?
(attached: existing taps for 100V wiring)
https://drive.google.com/file/d/1NBny4a2HoLRjfVGiasG48A2IoPaIcI_c/view?usp=sharing
https://drive.google.com/file/d/1N3QUV-7IBBPu5Qtk-_gk2Sw4zPJq82Vk/view?usp=sharing
Thank you.
Abhishek
imhififan, This is so helpful. many of us on this forum have reasons to thank you. I am gonna make these changes and report back if it worked. Do you also suggest changing the fuse and amplifier power cable to meet new current requirements? I am not able to locate the fuse though. Regards, Abhishek |
Do you also suggest changing the fuse and amplifier power cable to meet new current requirements? I am not able to locate the fuse though.Yes, for safety reason, changing the main fuse is a must! Usually you can find the fuse on the power switch pcb or soft-start board in a Accuphase integrated, and its clearly specified the fuse rating requirements on the board. For power cable, you can either buy a new cable or some kind of plug adapter, I always found Accuphase cable are good enough for my use. https://images-na.ssl-images-amazon.com/images/I/61KBr4YNf6L._AC_SL1500_.jpg I am gonna make these changes and report back if it worked.Before you swiping the wires, measure the resistance across tap 2 and tap 4, after conversion the value should be about 4 times higher. https://www.stereo.net.au/forums/uploads/monthly_06_2014/post-116892-0-01154100-1402272457_thumb.jpg I also strongly recommend to use a 230V 100 watts Incandescent light bulb in series to power up the amp at the first time after voltage conversion. If anything goes wrong the light bulb will simply light up instead of dimming and save the amplifier from any damage. |
I believe E-270 basically has the similar connection, Accuphase changed the color code on E-270 primary winding wires from E-260. Sorry I can’t see the color very clear from your picture, please confirm if the setting shown on your picture is 100V Japan voltage? and also confirm if the colors are correct as following: Pin 1 = None Pin 2 = Yellow Pin 3 = Orange + Black Pin 4 = Brown Pin 5 = Blue Pin 6 = Red + Gray Pin 7 = None BTW, below is a picture similar to E-260 primary winding color code, except the blue wire should be violet on E-260. Once you confirmed which wire belongs to which primary winding by a DMM, voltage conversion should be quite straightforward.
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Thanks @frankhhh for posting the pictures of E-260 and E-270. If I understand you correctly, E-260 and E-270 primary winding color as follow: winding on E-260 / E-270 1. 120V orange / yellow 2. 100V red / orange 3. 0V gray / red 4. 120V yellow / brown 5. 100V brown / black 6. 0V white / gray 7. T. fuse violet / blue If above color code is correct, the voltage settings of E-270 should be as below ( pin numbered from left to right according to provided picture ): 120V setting : pin1 = None, pin2 = orange, pin3 = yellow + brown, pin4 = black, pin5 = blue, pin6 = red + gray 220V setting : pin1 = black, pin2 = yellow, pin3 = orange, pin4 = red + brown, pin5 = blue, pin6 = gray 230/240V setting : pin1 = black, pin2 = orange, pin3 = yellow, pin4 = red + brown, pin5 = blue, pin6 = gray
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Hi @imhififan i just have a question regarding the conversion on the e-270. Thanks so much. |
Pins 2 and 4 are not connected to any part of the circuit, they are there to house unused wires. So it doesn’t matter if the black and orange wires are on pin 2 or pin 4. Connect the yellow and brown wires to pin 3 to set the voltage to 120V. Hope this helps. |
Thanks so much @imhififan does it matter which wires go on top and on the bottom of pin 3 ? Thanks again for your support
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Thank you @imhififan , appreciate it. |
Hello @imhififan, Hope this message finds you well. I am a young lad from France and love vintage Hifi gear. In 15 days, I will be visiting Japan and would like to buy an Accuphase E303. Do you think that the wiring system is similar and that it would be possible to convert it to 230V AC ? Below, you can find some of the pictures that I found on Internet.
Thank you very much for your answer and for sharing your knowledge with all the forum members 🙏🏽
Best regards, João Ferreira
P.S. If you know these devices, which one do you prefer? E202 vs E303? Do you think they can marry well with a pair of Ditton 66? I have currently a Citation 16+17 and I am not happy with the result. Thank you |
Welcome to the forum!
Yes, you can download the service manual at https://elektrotanya.com/accuphase e-303, It shows voltage conversion.
IMO, Accuphase's newer models generally have better specs than their predecessors, and I would choose the E-303 over the E-202.
Sorry, I have no experience with Ditton 66. Maybe other forum members will climing in to give you advises.
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