The SD18-1700N is an very high output low frequency transducer. 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 range is 30Hz to 200Hz. The transducer uses high energy
neodymium magnetics to achieve a very high acoustic output to weight ratio.
The SD18-1700N employs a large 4.5 inch (114.3mm) diameter voice coil that
provides an AES rated 1700 watts of continuous power handling and a full
6800 watts of peak rated power handling when sufficient amplifier headroom
is available. It is recommended that the transducer be loaded into a properly
designed vented enclosure and suitable active high pass filtering be employed
if extremely high power levels are expected at low frequencies.The
SD18-1700N utilizes P Audio’s Auto Balanced Cooling (ABC) technology to
not only improve transducer power handling and reliability but to also increase
power compression performance by carefully balancing and directing airflow
to critical areas.
The voice coil design is an “inside/outside” geometry with P Audio’s square
wire technology to improve conversion efficiency and provide a very large
cross-sectional area for superior cooling.
System linearity is achieved by employing magnetic flux demodulation
devices in the structure to increase fidelity and sonic accuracy. The system
suspension has been designed specifically for high linear displacement
and extended low frequency response. The double spider design insures
very high displacement and linear response while maintaining excellent
control. The cone has been treated with a conformal coating designed to
provide additional mechanical damping and moisture resistance.
The transducer chassis is a die cast aluminum design that insures a very
high degree of structural integrity. |
