Marvel Posted December 1, 2020 Share Posted December 1, 2020 There is no indication from Tonsil OR Eminence that they have ferro fluid in them. My guess would be that they don't, or they would advertise as such. Quote Link to comment Share on other sites More sharing options...
Jazzpassions Posted December 1, 2020 Share Posted December 1, 2020 (edited) This is apt150. More power. I suppose different diagram fron apt50 Edited December 1, 2020 by Jazzpassions Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 2, 2020 Share Posted December 2, 2020 10 hours ago, Marvel said: Or an error. I believe it is the same apt50 driver. Would have to contact them. ok so here we go - 1)-- the older APT 50 internal thread tweeter uses the Eminence D25D diaphragm for APT-50, manufactured prior to January 21, 2010 -45 watts -air gap Ferro fluid- http://www.tonsilproducent.pl/files/karty/EN/Horn speaker DRIVER T - APT 150.pdf 2)- the newer APT50-external thread tweeter uses the Eminence D25D-2 or D25D-3 ------ 35 Watts-----no mention of Ferro-fluid https://www.parts-express.com/pedocs/specs/290-530--eminence-apt-50-spec-sheet.pdf https://www.eminence.com/pdf/Eminence_HF_Components.pdf Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 2, 2020 Share Posted December 2, 2020 8 hours ago, Jazzpassions said: This is apt150. More power. I suppose different diagram fron apt50 nope , same tweeter , but different , horn -larger-wider http://www.tonsilproducent.pl/files/karty/EN/Horn speaker DRIVER T - APT 150.pdf Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 2, 2020 Share Posted December 2, 2020 Thanks, Randy. That is actually the horn I show on top of my old LS in the pic above. That horn works great. I like it better than the small horn used on the old K77, but you have to be willing to mount i on the top. I wonder if it is the ferrofluid that helps with the smoothness on the early ones made by Tonsil. Obviously, Eminence didn't choose to use it on the newly manufactured APT50. Bruce Quote Link to comment Share on other sites More sharing options...
Jazzpassions Posted March 10, 2021 Share Posted March 10, 2021 Hi to all, the la scala "garage made" are working progress. I found original k55, and buy woofer eminence. Original crites crossover Tweeter eminence too. After various check in Italy i found apt 150, (with old apt 50 and exponential horn). I wrote to tonsil too, but it is impossible have a conversation with customer service. Eminence apt 50 is only driver Apt80 - apt50 driver with circular horn Apt150 - apt50 with exponential rectangular horn Apt200 - apt50 with biradial horn. The newest product has new driver (all black). I found apt150 with old apt50 (all alluminium). Quote Link to comment Share on other sites More sharing options...
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