Аудио-википедия

http://viawave.ru/ru/products
grt-145w-4.pdf
srt-7.pdf

https://soundex.ru/forum/index.php?/topic/49006-%D0%BB%D0%B5%D0%BD%D1%82%D0%BE%D1%87%D0%BD%D1%8B%D0%B5-%D1%82%D0%B2%D0%B8%D1%82%D0%B5%D1%80%D1%8B-viawave/
http://forum.vegalab.ru/showthread.php?t=76554

……..
Over the last weeks we worked with your GRT-145-8 ribbon tweeter and we are amazed by the sound quality.
This is the very best tweeter that I ever tried and I tried many tweeters:
хххххххх, Accutone, Scan Speak Illuminator Beryllium and Revelator Beryllium, SB Acoustics Satori Berylium and soft dome… just to name a few.

I now ordered the GRT-145W-8 to find out what the waveguide offers
…….
Это из Германии фирма.