Speaker power usage

[Taff107]

Chaps, with the intention to use my Logitech Z4 2.1 Speakers bought in Canada, I purchased a (cheap) step down 240v-110v converter from Ebay. The speakers worked fine for about 2 hrs then lost all power. Believing the speakers to have relatively low power draw I thought the converter would be able to manage it. The converter was pretty warm with a tinge of a burnt smell

Speakers - https://www.cnet.com/products/logitech-z4/specs/

Converter -

Is the converter faulty or are the speakers asking too much of it? I have no clue when it comes to the "30 VA / 50VA" figures.....

If the converter has gone to the Chinese junk-pile in the sky, I'm thinking of picking up one of these to replace. Would this work ok?

https://www.amazon.co.uk/KRI%C3%8BGER-Converter-Tr...

Look to be far better quality...

many thanks in anticipation

[OldGermanHeaps]

converter no love long time working.

[anonymous-user]

OldGermanHeaps said:

converter no love long time working.

[megaphone]

Take a pic of the label on the speakers and post, it will tell us how many amps they draw.

[Taff107]

There's nothing on the (seemingly transparent) sticker to indicate power usage and the camera struggles to get a clear shot. Apologies but this is the best I can get...

[SS2.]

30VA is pretty puny - less than 300mA.

I'd wager the converter has gone south after prolonged [high] current draw.

[Taff107]

Do you reckon the one I posted would handle it ok?

[silentbrown]

Taff107 said:

Do you reckon the one I posted would handle it ok?

That one's about 4 times the power of the cheapy one, so should be fine. Z4 probably draws around 50-60W max.

It's still only 200W so don't try plugging hairdryers into it, and it's about the same price as buying a used UK Z4 set off fleabay...

[anonymous-user]

The manual for the speakers states 80W at 10% THD. As this is the power into the speakers, with the efficency of the system, etc I think you need a convertor rated at 150VA at least to run these reliably.

Probably cheaper to buy a new set of speakers.

The existing convertor is cooked and ready for recycling or use as a door stop.

[silentbrown]

gottans said:

The manual for the speakers states 80W at 10% THD. As this is the power into the speakers, with the efficency of the system, etc I think you need a convertor rated at 150VA at least to run these reliably.

80W Peak, 40W RMS.

The rear panel of Z4 says "170ma @230v", which I don't believe as that requires it to be over 100% efficient to hit 40W continuous...

https://webimg.secondhandapp.com/w-i-mgl/5afaccd4d...