Best 1" HF diaphgram for Altec today?

**quaramon** · January 29th, 2026, 12:04 PM

Hi, now that GPA doesn't seems to be able to sell diaphgrams more, what's the second best alternative?
I know most people recommend Radian.

I had some chat with Tom at Simply Speakers and their alternative is this:
Altec Lansing Style Speaker Replacement Horn Diaphragm 26420XX, 604, 802, 806, 808, 902, 904, 908
These are made in Thailand by A-Ton, which have been in business for 50(!) years, some more info here: Our Business at STH Professional Audio

Anyone with experience of them, or any another manufacturer?
Nothing wrong with Radian but it's always nice to know if there is more around.
I'm aware that you can order extremely cheap from China, I actually have a pair from Aliexpress, but it don't seems like the best solution.

**Phil-G** · January 30th, 2026, 10:12 AM

Cheap, is for a reason.

**quaramon** · January 30th, 2026, 02:24 PM

Referring to China stuff or Simply Speakers? SS is $49 which is a bout half of what Radian wants.
SS and Radian are the only ones I've found that is documented NOT been imported from China but I guess there is some more alternatives.