Weatherproof and rugged construction.
High SPL, crisp penetrating sound.
Voice coils precision-wound on an aluminium bobbin for efficient heat dissipation.
AU-40XT has a built-in 100V transformer with easily selectable power taps/impedance by changing the position of the rotary switch at the rear.
Degree of protection IP 66 provided, when mounted on a reflex horn, against foreign particles such as dust and jets of water thus making them ideal for outdoor use. Meets EN 60529.
Fitted back to reflexive horn WFB-18 or WFA 21, As you can see screw system on tip of the driver unit
Connection to rear panel of Amplifier as COM-16Ω (Black wire is for COM & Red wire is for 16Ω)
Caution: Wrong connection may lead to Damage/burn your coil.