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C18-650EL


The P.Audio C18-650EL is a high output low frequency transducer. The C18-650EL is an upgraded design that features many of P.Audios 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 transducer uses high energy ferrite magnetics to achieve a very high acoustic output to weight ratio.

The C18-650EL employs a large 3.9 inch (99.3mm) diameter voice coil that provides an AES rated 1200 watts of continuous power handling and a full 4800 watts of peak rated power handling when sufficient amplifier headroom is available. The transducer is optimized for use in properly tuned vented enclosures and will provide maximal reliability when both a vented enclosure and active high pass filtering are employed. The C18-650EL utilizes P.Audios 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 a bobbin wound geometry with P.Audios rectangular wire technology to improve conversion efficiency and provide a large crosssectional area for superior cooling.

The transducer employs 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 further enhances system mechanical control and reliability. 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.

GENERAL SPECIFICATIONS

  Nominal diameter   457 mm/18 in
  Power rating   1200 W(AES)
  Nominal impedance    8Ω
  Sensitivity    97 dB
  Frequency range    30-200 Hz
  Chassic type    Cast aluminum
  Magnet type    Ferrite
  Magnet weight   3.56 kg/125.7 oz
  Voice coil diameter   99.3 mm/4 in
  coil material   CCA-R
  Former material    Glass fiber
  Cone material   Paper
  Surround material   Cloth
  Suspension   Double
  X-max   5.25 mm/0.21 in
  Gap depth   15 mm/0.59 in
  Voice coil winding width   25.5 mm/1 in
  Packing dimension WxDxH(mm)   505 x 505 x 275
  Net weight   13.3 kg/29.3 lb
  Shipping weight   14.7 kg/32.4 lb

FEATURES

  • 3.9" Very Large Format Voice Coil
  • 4800 Watts Peak Power Handling
  • Active Balanced Cooling
  • Ferrite Magnetics
  • Precision Rectangular Ribbon Wire
  • Double Spider Suspension
  • Integrated Demodulation Rings
  • Die Cast Aluminum Chassis

SMALL SIGNAL PARAMETERS

  Re   5.8Ω
  Fs   46 Hz
  Mms   179.84 g/6.34 oz
  Mmd   155.18 g/5.47 oz
  Qms   5.39
  Qes   0.58
  Qts    0.52
  Vas   144.23 lt/5.09 ft3
  SD   1225 cm2
  BI    22.76 Tm
  Cms   6.9e-05 m/N
  Rms   9.57 Ns/m
  Le (at 1kHz)   0.63 mH

C18-650EL


The P.Audio C18-650EL is a high output low frequency transducer. The C18-650EL is an upgraded design that features many of P.Audios 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 transducer uses high energy ferrite magnetics to achieve a very high acoustic output to weight ratio.

The C18-650EL employs a large 3.9 inch (99.3mm) diameter voice coil that provides an AES rated 1200 watts of continuous power handling and a full 4800 watts of peak rated power handling when sufficient amplifier headroom is available. The transducer is optimized for use in properly tuned vented enclosures and will provide maximal reliability when both a vented enclosure and active high pass filtering are employed. The C18-650EL utilizes P.Audios 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 a bobbin wound geometry with P.Audios rectangular wire technology to improve conversion efficiency and provide a large crosssectional area for superior cooling.

The transducer employs 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 further enhances system mechanical control and reliability. 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.