The 12W750 meets the specific market requirement for a loudspeaker which combines the excellent linearity, good efficiency and high power handling of the 15W750 model but in a 12 inch (300mm) chassis for use in more compact systems. It is primarily intended for application in compact reflex and band-pass enclosures but can also be used for horn loaded configurations. The curvilinear paper cone has been made from a special high strength woodpulp designed to achieve the best possible linearity within its intended frequency range and to control bell-mode resonances around the cone circumference. The cone is carried by an unusually deep profile, triple roll suspension made from a polycotton material which is more resistant to aging and fatigue than traditional cotton-based ones. The 75 mm (3 inch) diameter aluminum voice coil employs the Interleaved Sandwich Voice coil (ISV) technology, in which a high strength fiberglas former carries windings on both the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly with a reduced tendency for eccentric behavior when driven hard. The magnetic structure has been optimized using FEACAD resource to maximize the flux density in the voice coil gap. Voice coil cooling has been achieved by incorporating airways between the chassis back plate and the top plate of the magnet, allowing heated air from the voice coil and gap to be channeled away and dissipated by the chassis basket. Due to the increasing use of audio systems at outdoor events, the ability to perform in adverse weather conditions or in high-humidity areas is an essential feature of the 12W750. This has been achieved using an exclusive cone and magnet plate treatment process which increases resistance to corrosion and renders the cone water repellent.
Mounting and Shipping Info
Nominal Diameter300 mm ( in)
Nominal Impedance4 Ω
Minimum Impedance4.1 Ω
Nominal Power Handling1600 W
Continuous Power Handling21200 W
Frequency Range50 - 4600 Hz
Voice Coil Diameter75 mm (3.0 in)
Winding Depth19.0 mm (0.75 in)
Magnetic Gap Depth10.0 mm (0.39 in)
Surround ShapeTriple roll
Woofer Cone TreatmentWeather protected
Recommended Enclosure60.0 dm3 (2.12 ft3)
Recommended Tuning65 Hz
Resonance Frequency55 Hz
Vas58.0 dm3 (2.05 ft3)
Sd531.0 cm2 (82.31 in2)
Overall Diameter310 mm (12.2 in)
Bolt Circle Diameter295 mm (11.61 in)
Baffle Cutout Diameter280.0 mm (11.02 in)
Depth148 mm (5.83 in)
Flange and Gasket Thickness11 mm (0.43 in)
Net Weight7.5 kg (16.53 lb)
Shipping Weight8.3 kg (18.3 lb)
Shipping Box332 x 332 x 184 mm (13.07x13.07x7.24 in)
2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.
Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.