Speaker Crossover Fuse SK3 Osram Sylvania 569 12.8V 2.1A 27W T3 Tannoy JBL Bose EV Convair Electro Voice Peavey.
One Fuse / Lamp for speaker Crossovers,SK3 Osram Sylvania 569 12.8V 2.1A 27W T3 as fitted many speakers crossovers including Tannoy, JBL, the genuine & correct Tannoy / JBL lamp fuses.
Simply, if it looks like this, it's the right fuse, only one made, 12V.
Why 27 watt ? Rated at 12.8V x 2.1A = 27 watt.
These are built in the USA, by Osram Sylvania to the correct specification, who also make lamps bulbs for the US Military, these are not cheap China copies.
Also used many many other products.
DO NOT FIT NON GENUINE FUSES / LAMPS, NOT EVER EVER EVER. SEE PIC ... BOX FROM FACTORY SHOWS WE SUPPLY. GENUINE AND REAL OSRAM SYLVANIA.