Raidho Factory Tour - Handmade Loudspeakers and Drivers from Denmark

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Heard some of these this weekend, great tweeters.

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I would agree that the Raidho drivers sound great and seem to be well engineered and integrated.

I do wonder if Borresen by comparison is just a wannabe copycat.

What really nice drive units!! I really thought the tweeters they were referring to as ribbons were going to be planars. When I saw them remove the plastic layer, I thought it was just the aluminum structures left behind, but the heat application to remove wrinkles makes me think there’s still a heat shinkable mylar/plastic layer beneath. ???

If not, it’s like a cross between a planar and a ribbon, which is something I haven’t seen done before.

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Those are for sure planars. Ribbons have transformers and a folded membrane. This has neither. Infinity used planars.

Never understood how these people work at these companies and don’t know the difference.

Yeah wasn’t thinking about the transformer deal.

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But does the transformer make it a ribbon tweeter or the ribbon of folded aluminum? Bozhen tweeters are “Ribbon type” or “hybrid ribbon” and do not have a transformer.

I know this is hair splitting, but AMTs are folded and are not true ribbons. RAAL, Fountek, and others are true ribbons and are not folded but flat.

To quote our passed friend Joel;

“Why do we wike wibbins? Cuz wibbins get down ta bidnit!”

Technically inaccurate I know, but I have a habit of calling all leaf, AMTs, planars, and electrostatic elements ribbons; due to thin ribbon-like elements and operation. If it has a transformer, I call it a true ribbon.

I would say it is an AMT if it is folded but doesn’t have a transformer.

I know most people call them all Ribbons but they just aren’t.

The Bozhen bucks the trend as it has an ovular voice coil, and a folded membrane.

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