GM Series

GM15-88F

P-Audio GM15-88F 15" 700W Low Frequency Driver

Click here to download the Datasheet (PDF)


The P. Audio ‘Golden Master’ GM15-88F is the intersection of advanced design and state of the art manufacturing. The GM15-88F is a 15 inch (381mm) low frequency transducer for high performance professional audio. The 3.5 inch (88.9mm) inside/outside wound voice coil is designed for superior reliability and excursion, featuring high temperature aluminum wire and extended winding length. The weightoptimized ferrite magnetics maximize the coil’s strengths by providing strong magnetic flux across its whole range of movement. This keeps coil motion faithful to the audio signal without distorting. Aluminium ‘demodulation’ rings negate inductance effects in the motor, further improving the fidelity of coil movement. The ferrite 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 GM15-88F is rated at 2800 W peak power handling/ 700 W AES continuous power handling with nominal sensitivity of 97 dB. Linear and symmetrical stiffness behavior of the suspension compliments linear coil motion. The GM15-88F’s large diameter spider is a durable silicone laminate design that provides symmetrical displacement and reliable voice coil positioning even after hours at high power levels. The cone features a proprietary doubleroll 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 GM15-88F is in very high performance sound reinforcement and large format public address systems. It is ideal for use in a well-tuned vented enclosure - both two-way full range and double 15” sub-woofer designs. Performance is optimized when using a high pass 4th order Butterworth filter tuned near the enclosure vent frequency. The GM15-88F offers a 45-2000Hz useable bandwidth, though the actual crossover frequency will be determined by the driver and horn combination in the user’s system.	General Specifications Nominal diameter............................................... 381 mm/15 in Power rating..........................................................700 W(AES) Nominal impedance............................................................ 8 Sensitivity........................................................................ 97 dB Frequency range.....................................................45-2000 Hz Chassis type.....................................................Cast Aluminium Magnet type...................................................................Ferrite Magnet weight...............................................2.95 kg/103.9 oz Voice coil diameter.......................................... 88.9 mm/3.5 in Coil material......................... Round Aluminium Wire Former material.......................................................Glass Fibre Cone material.................................................................Paper Surround material............................................................Cloth Suspension............................ Silicone Impregnated Spider X-max.............................................................5 mm/0.2 in Gap depth.......................................................10 mm/0.39 in Voice coil winding width................................. 20 mm/0.79 in Net Weight......................................................... 12 kg/26.5 lb Packing Dimension WxDxH (mm)415mm x 415mm x 230mm Shipping Weight................................................ 13.3 kg/29.3 lb Small Signal Parameters Re.................................................................................... 5.5 Fs................................................................................... 46 Hz Mms.................................................................. 101.18 g/3.57 oz Mmd.................................................................. 86.80 g/3.06 oz Qms.................................................................................... 8.07 Qes................................................................................... 0.52 Qts.................................................................................... 0.49 Vas................................................................... 120.49 lt/4.25 ft3 SD............................................................................855 cm2 BI.............................................................................. 17.65 Tm Cms......................................................................1.2e-04 m/N Rms......................................................................... 3.7 Ns/m Le (at 1kHz)................................................................0.52 mH

The P. Audio ‘Golden Master’ GM15-88F is the intersection of advanced design and state of the art manufacturing. The GM15-88F is a 15 inch (381mm) low frequency transducer for high performance professional audio. The 3.5 inch (88.9mm) inside/outside wound voice coil is designed for superior reliability and excursion, featuring high temperature aluminum wire and extended winding length. The weightoptimized ferrite magnetics maximize the coil’s strengths by providing strong magnetic flux across its whole range of movement. This keeps coil motion faithful to the audio signal without distorting. Aluminium ‘demodulation’ rings negate inductance effects in the motor, further improving the fidelity of coil movement.

The ferrite 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 GM15-88F is rated at 2800 W peak power handling/ 700 W AES continuous power handling with nominal sensitivity of 97 dB.

Linear and symmetrical stiffness behavior of the suspension compliments linear coil motion. The GM15-88F’s large diameter spider is a durable silicone laminate design that provides symmetrical displacement and reliable voice coil positioning even after hours at high power levels. The cone features a proprietary doubleroll 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 GM15-88F is in very high performance sound reinforcement and large format public address systems. It is ideal for use in a well-tuned vented enclosure - both two-way full range and double 15” sub-woofer designs. Performance is optimized when using a high pass 4th order Butterworth filter tuned near the enclosure vent frequency. The GM15-88F offers a 45-2000Hz useable bandwidth, though the actual crossover frequency will be determined by the driver and horn combination in the user’s system.

General Specifications

Nominal diameter............................................... 381 mm/15 in
Power rating..........................................................700 W(AES)
Nominal impedance............................................................ 8
Sensitivity........................................................................ 97 dB
Frequency range.....................................................45-2000 Hz
Chassis type.....................................................Cast Aluminium
Magnet type...................................................................Ferrite
Magnet weight...............................................2.95 kg/103.9 oz
Voice coil diameter.......................................... 88.9 mm/3.5 in
Coil material......................... Round Aluminium Wire
Former material.......................................................Glass Fibre
Cone material.................................................................Paper
Surround material............................................................Cloth
Suspension............................ Silicone Impregnated Spider
X-max.............................................................5 mm/0.2 in
Gap depth.......................................................10 mm/0.39 in
Voice coil winding width................................. 20 mm/0.79 in
Net Weight......................................................... 12 kg/26.5 lb
Packing Dimension WxDxH (mm)415mm x 415mm x 230mm
Shipping Weight................................................ 13.3 kg/29.3 lb

Small Signal Parameters

Re.................................................................................... 5.5
Fs................................................................................... 46 Hz
Mms.................................................................. 101.18 g/3.57 oz
Mmd.................................................................. 86.80 g/3.06 oz
Qms.................................................................................... 8.07
Qes................................................................................... 0.52
Qts.................................................................................... 0.49
Vas................................................................... 120.49 lt/4.25 ft3
SD............................................................................855 cm2
BI.............................................................................. 17.65 Tm
Cms......................................................................1.2e-04 m/N
Rms......................................................................... 3.7 Ns/m
Le (at 1kHz)................................................................0.52 mH