Stepdown Transformer for amplifier- advice needed

[wilkie366]

Hello there, I have just bought a new Luxman L507Z from Japan (meant for 100V).
I'm in Singapore, where we are at 230V and 50hz. The Luxman sends 210W per channel at 4ohms (my speakers are Dynaudio Contour 30i, which are rated for 300W at 4ohms. How big a step down transformer should I be looking at? 1000V or 2000V? Is there a specific type of stepdown transformer that I should be looking at? Somewhere I read that isolation transformers are better for audio equipment, would love to hear your thoughts on this. Thanks very much!

 

[Mike]

Were you unable to purchase the proper voltage for your country in your country?


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[wilkie366]

Were you unable to purchase the proper voltage for your country in your country?
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Hi Mike

In Singapore the same amp was twice as expensive.

Thanks

 

[Mike]

Hi Mike

In Singapore the same amp was twice as expensive.

Thanks

And? Now you have no warranty, no resale and have to mess up the sound with a step up transformer.


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[nicoludio]

Hello there, I have just bought a new Luxman L507Z from Japan (meant for 100V).
I'm in Singapore, where we are at 230V and 50hz. The Luxman sends 210W per channel at 4ohms (my speakers are Dynaudio Contour 30i, which are rated for 300W at 4ohms. How big a step down transformer should I be looking at? 1000V or 2000V? Is there a specific type of stepdown transformer that I should be looking at? Somewhere I read that isolation transformers are better for audio equipment, would love to hear your thoughts on this. Thanks very much!

Try contacting James - All Products – Plixir Power

He may be able to customise step up transformers but good ones will not be inexpensive.

 

[W9TR]

Being the DIY person that I am, the first thing I’d do is pop the cover and see if there is an option to change the amp to 230V. It’s usually much less expensive to add a second primary winding to the transformer compared to stocking multiple transformers for different mains voltages. If this is possible remember to halve the fuse amperage as well.

If that doesn’t work out you’ll need a 240V to 100V 1000VA step-down transformer. Don’t get one of the electronic ones, get an old school magnetic step down transformer.