Neodymium magnet The compact size of the magnet allows SL speakers to be installed where others can't. It offers an extraordinary power-to-weight ratio: approximately 10x more magnetic strength than a conventional iron-ferrite magnet of equal size. High Performance Key System Benefits · Type-S1 1-inch Kortec® tweeter for superb power handling and reliability · TwinStageTM aluminum heat sink, to increase power handling · Neodymium magnets, for extraordinary power-to-weight performance · Superb on- and off-axis response, whether configured as a component or a coaxial Leading the component drop-in category, Boston SL speakers borrow several key features from our acclaimed Boston Pro speakers, to give them plenty of pure, natural performance--all with minimal distortion and maximum bass. Available in four models designed specifically for easy installation into a variety of factory locations. It's a level of sound quality and installation ease not commonly found at such a popular price point. TwinStageTM heat sink Two separate aluminum heat sinks improve power handling and reliability. The first heat sink is located inside the voice coil; the second surrounds the main woofer magnet assembly. 1 1/2-inch voice coil Oversized 1 1/2-inch voice coil increases overall power handling and reliability. Type-S1 Kortec® tweeter The Type-S1's 1-inch dome is extremely lightweight and ultra strong, for excellent transient response and low distortion. Contoured tweeter plane Asymmetrical tweeter plane provides more natural off-axis response. (SL95 and SL65) Dual tweeters Smoother frequency response and higher output compared to conventional 3-way designs. (SL95) Key Installation Benefits · The SL60 has separable and dockable crossover cases that allow the highpass and lowpass to be separated, for easier installation into tight interiors · The SL60 uses quick-fit tweeter mounting systems for easy installation · Compact neodymium magnets on all models reduce installation clearances, and minimize problems with window regulators and trunk torque rods · The SL95 incorporates a unique compact design that allows it to fit where other 6 x 9-inch speakers cannot · VariMountTM adapter rings allow for fast, easy installation in virtually any factory cutout size · The SL80 is a true component 6 1/2-inch speaker for common Ford® 5 x 7-inch applications 2 component models: SL80 5 x 7-inch (plate) SL60 6 1/2-inch 2 coaxial models: SL95 6 x 9-inch SL65 6 1/2-inch Separable and dockable crossovers Installation is more flexible, thanks to patent-pending highpass and lowpass crossover sections that can be separated. Crossovers can be connected for single or dual input, or daisy-chained for custom applications. (SL60) System-specific crossovers With both dynamic and solid state tweeter protection. Quick-fit mounting cup One-step connecting tweeter cup simplifies installation. Place the tweeter in the quick-fit cup and a simple rotation makes all connections and secures the tweeter into the cup. Tweeter security tabs Tabs on the tweeter grille prevent the tweeter from being taken out unless the grille is removed. VariMountTM Boston SL comes with several mounting adapters, making it possible to drop the speakers into the most common factory locations. Both 160mm and 165mm adapters and a 1/2-inch spacer are included. (SL60 and SL65) SL95 SL60 SL65 SL80 ...