Eminence Replacement Tweeter Protection Fuse Lamp CrossoverPX:BULB Part # 290-659UPC844632009839EAN0844632009839ASINB000BBOVS0One paired lamp consisting of a two lamps connected in parallelEminence Peavey JBL Carvin Yamaha EV Cerwin VegaLB-12.8-97 Fuse Protection Bulb, 1.7" ClearReplace the burnt out fuse lamps in your crossover networks.About 1 5/8" long, mounting ends about 3/8" in diameterAll tested and validated before going outShipped in packaging that is safe for their arrival to your locationThese will certainly work in other makes and modelsThanks- -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- Description from the interwebs:Eminence PX:BULB Tweeter Protection Lamp for CrossoverProduct DescriptionManufacturer Part Number: PX:BULBEminence PX:BULBEminence px/pxb crossovers feature advanced circuit design to both preserve the crossover and your high frequency drivers. The high-pass protection uses this custom-built tweeter protection lamp. It is very easy to notice the flashing of these fuses as they work to absorb transients which are not being delivered to the tweeters. The tungsten filaments effectively track the program material, dynamically maintaining a safe maximum current level to the high frequency driver without introducing distortion. This circuitry provides smooth 3:1 analog compression during input overload conditions over 250 watts RMS. For use as a replacement on all Eminence px and pxb pro sound crossovers.Brand:Eminence SpeakerModel:PX:BULBPart Number:290-659UPC:844632009839Product Category:Speaker Protection DevicesUnit of Measure:EAWeight:0.1 lbs.