• Home
  • Brands
  • P.Audio


The P. Audio ‘Golden Master’ GM18-1800N is the intersection of advanced design and state of the art manufacturing. The GM18-1800N is an 18 inch (457mm) low frequency transducer for high performance professional audio. The 4.5 inch (114.4mm) voice coil is designed for superior reliability and excursion, featuring ultra-high temperature wire and extended winding length. The low-weight neodymium magnetics maximize the coil’s strengths by providing extra strong magnetic flux across its whole range of movement. This keeps coil motion faithful to the audio signal without distorting. The neodymium magnet structure cooperates with a carefully optimized venting system on the bottom of the sleek Golden Master chassis to control airflow around the voice coil. This cools the durable design to further levels of reliability without losing sensitivity – the GM18-1800N is rated at 1700 W AES power handling with nominal sensitivity of 97 dB. Linear and symmetrical stiffness behavior of the suspension compliments linear coil motion.

The GM18-1800N’s large diameter spider is a durable double silicone design that provides symmetrical displacement and reliable voice coil positioning even after hours at high power levels. The cone features a proprietary triple-roll cloth surround. The perfect match of material and geometry mean ultra-low distortion of cone movement and ultra-low distortion of sound. Coating keeps the cone rigid and waterproof during operation. The ideal application for the GM18-1800N is in a well-tuned vented enclosure, and it is suited to sub-woofer designs using bi-amped configurations. The GM18-1800N offers a 35-1500Hz usable bandwidth.


  Nominal diameter    457 mm/18 in
  Power Handling Capacity   1700 W (AES)
  Nominal Impedance   8Ω
  Sensitivity(1W/1m)   97 dB
  Frequency range   35 - 1500 Hz
  Chassis type   Aluminum
  Magnet type   Neodymium
  Magnet weight   1.09 kg / 38.4 oz
  Voice coil diameter   114.4 mm / 4.5 in
  Coil material   HML Wire
  Former material   GSV
  Cone material   Paper
  Surround material   Cloth
  Suspension   Double Silicone Spider
  X-max   14 mm / 0.55 in
  Unit weight   12.1 kg / 26.68 lb
  Gross weight   14.8 kg / 32.63 lb
  Size WxDxH(mm)   505x505x305 mm


  • 4.5” Large Format Voice Coil
  • 97 dB Sensitivity
  • Neodymium Magnetics


  Fs   32 Hz
  Re   5.3 Ohm
  Qms   5.6
  Qes   0.32
  Qts   0.3
  BL   30.3 Txm
  Mms   275 g / 9.7 oz
  Mmd   263.67 g / 9.3 oz
  Vas   187 lt / 6.6 cu.ft
  SD   1210 cm2
  Le   1.9 mH
  Cms   5.4e - 05 m/N
  Rms   5.56 Ns/m