SEAS Prestige 27TBFC/G (H1212) Aluminum/Magnesium Dome Tweeter
High Definition metal dome tweeter with a wide, soft polymer surround and rear chamber.
Aluminium/magnesium alloy diaphragm with pistonic behaviour throughout the audible frequency range, resulting in a good dispersion also above 10kHz. A Hexagrid protects the diaphragm, and supports a phase plate which compensates for a slight axial roll off towards 20 kHz. Sonomax surround for low resonance and excellent mechanical linearity. Voice coil windings immersed in magnetic fluid increase short term power handling capacity and reduce the compression at high power levels. Stiff and stable rear chamber with optimal acoustic damping allows the tweeter to be used with moderately low crossover frequencies. Precision moulded chassis from glass fibre reinforced plastic, and its front design offers optimum radiation conditions.
These tweeters are the best known upgrade & replacement for the Vifa D25AG Aluminium dome tweeters. It has nearly identical specs, no changes to the crossover are required. Please note that the + & - male tabs are spaced 180 degrees on the new tweeter, so you will most likely have to notch out the through hole to accommodate the new tweeter tabs. That will be covered back up once you mount the tweeter back into your cabinet.
Works for Vifa D25AG05, D25ASG05, D25AG35, D25AG68 (Thiel CS 1.5). This will work for any Vifa tweeter with "25AG" in the number that is on a 104mm circular flange.
Also the logical replacment for older Seas Alumiunum dome tweeters with 25TA or 25TAF in the product number and also on a 104mm circular flange. The tabs are spaced differently on the old tweeters, so you need to notch out the cabinet for the location of the tabs on the new tweeters.
Spec sheet: Seas Prestige 27TBFC/G H1212 Tweeter