The 12NW350 meets the specific market requirement for a loudspeaker which combines the excellent linearity, good efficiency and high power handling of the 12NTLW3500 model but in a traditional chassis for use in more compact systems. It is primarily intended for application in multiway systems and high power linearrays. 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. Triple roll suspension made from a polycotton material which is more resistant to aging and fatigue than traditional cotton-based ones. The 88 mm (3 inch) diameter CCAW 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 12NW350. This has been achieved using an exclusive cone and magnet plate treatment process which increases resistance to corrosion and renders the cone water repellent.
Specifications
Design
Parameters
Mounting and Shipping Info
Nominal Impedance8 Ω
Minimum Impedance5.8 Ω
Nominal Power Handling1800 W
Continuous Power Handling21600 W
Sensitivity398.0 dB
Frequency Range50 - 3500 Hz
Voice Coil Diameter88 mm (3.5 in)
Winding Depth22.0 mm (0.87 in)
Magnetic Gap Depth11.0 mm (0.43 in)
Surround ShapeTriple roll
Cone ShapeStraight
Woofer Cone TreatmentReinforced, water repellent, treated paper
Recommended Enclosure30.0 dm3 (1.06 ft3)
Recommended Tuning58 Hz
Resonance Frequency54 Hz
Re5.0 Ω
Qes0.35
Qms12.0
Qts0.34
Vas46.0 dm3 (1.62 ft3)
Sd531.0 cm2 (82.31 in2)
η₀2.0 %
Xmax8.3 mm
Xvar7.5 mm
Mms75.0 g
Bl19.2 Txm
Le0.85 mH
EBP154 Hz
Overall Diameter310 mm (12.2 in)
Bolt Circle Diameter295 mm (11.61 in)
Baffle Cutout Diameter283.0 mm (11.14 in)
Depth150 mm (5.91 in)
Flange and Gasket Thickness13 mm (0.51 in)
Net Weight5.1 kg (11.24 lb)
Shipping Weight5.6 kg (12.35 lb)
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.
