The P Audio IMF-HP18B is a high output low frequency transducer. The IMF-HP18B is an upgraded design that features many of P Audio's new technologies and performance upgrades. The 18 inch (457mm) diameter piston will produce extremely high sound pressure levels at very low frequencies and is ideal for high level deep bass and sub woofer response in both live sound and recorded music venues. The operating bandwidth of the IMF-HP18B is 35Hz to 500Hz. The transducer uses high energy ferrite magnetics to achieve a very high acoustic output to weight ratio.
The IMF-HP18B employs a large format 4 inch (101.6mm) diameter voice coil that provides an AES rated 600 watts of continuous power handling and a full 2400 watts of peak rated power handling when sufficient amplifier headroom is available. The IMF-HP18B utilises P Audio's under damper venting technology to improve transducer air flow and reduce turbulence under the damper and around the voice coil.
The voice coil design is bobbin wound geometry with P Audio's precision round wire technology to maximise system conversion efficiency.
The suspension has been designed specifically for high linear displacement and extended low frequency response. The transducer chassis is a heavy gauge stamped steel design that ensures a very high degree of structural integrity