jwjensen356 Posted April 22, 2010 Report Share Posted April 22, 2010 This subject may be plowing over old ground but perhaps it may need replowing. What is a more contemporary replacement for the SEAS 87H? I recall a suggested Morel speaker. Is that a good replacement? What are opinions about the SEAS 27TFFC (H0881)? Any other suggestions?John Link to comment Share on other sites More sharing options...
dynaco_dan Posted September 15, 2010 Report Share Posted September 15, 2010 This subject may be plowing over old ground but perhaps it may need replowing. What is a more contemporary replacement for the SEAS 87H? I recall a suggested Morel speaker. Is that a good replacement? What are opinions about the SEAS 27TFFC (H0881)? Any other suggestions?Johnafter reading an old hifi magazine the concensus was to use the older Phillips std 8 ohm tweeter, available on ebuy.it was also suggested for Advent and other 8 ohm systems and was the same one used in the Dahlquist DQ-10 speaKER System.vern Link to comment Share on other sites More sharing options...
jwjensen356 Posted September 15, 2010 Author Report Share Posted September 15, 2010 Since writing my original note I ordered (from Madison Sound) SEAS 27TDFC (H1189). It has been recommended as the closest to the original. Almost a drop-in (I had to cut away some relief for clearance).Johnafter reading an old hifi magazine the concensus was to use the older Phillips std 8 ohm tweeter, available on ebuy.it was also suggested for Advent and other 8 ohm systems and was the same one used in the Dahlquist DQ-10 speaKER System.vern Link to comment Share on other sites More sharing options...
Zilch Posted September 16, 2010 Report Share Posted September 16, 2010 I'm about to embark upon updating A-25 to constant directivity with DXT:https://www.madisound.com/store/product_inf...roducts_id=8322There'll be measurements galore and a PCD sim crossover design to go with.... Link to comment Share on other sites More sharing options...
dynaco_dan Posted September 19, 2010 Report Share Posted September 19, 2010 I'm about to embark upon updating A-25 to constant directivity with DXT:https://www.madisound.com/store/product_inf...roducts_id=8322There'll be measurements galore and a PCD sim crossover design to go with.... Hi thereI just visited that site and quickly looked at the specs.In my opinion, at 6 ohms, 90+db and starting at 2k, it would appear to be a non-go driver for the Dynaco A-25 replacement. Link to comment Share on other sites More sharing options...
dynaco_dan Posted September 19, 2010 Report Share Posted September 19, 2010 after reading an old hifi magazine the concensus was to use the older Phillips std 8 ohm tweeter, available on ebuy.it was also suggested for Advent and other 8 ohm systems and was the same one used in the Dahlquist DQ-10 speaKER System.vernHi againThe tweeter is the old Philips/Norelco AD0160/T8 which is 8 ohms.Another choice is to maybe use an Advent or KLH tweeter for another possible option. Link to comment Share on other sites More sharing options...
thechatterboxman Posted July 24, 2017 Report Share Posted July 24, 2017 I have a question that may bear indirectly on this issue. A friend asked me if the classic Dynaco speakers used ferro-fluid tweeters. I said, "No," but I began to wonder. I know people in here know more about this question than I do, so I am asking for an "expert ruling." Link to comment Share on other sites More sharing options...
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