PRECISION TRANSDUCERS - Oktava

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WOOFERLF15N401Professional Low Frequency TransducerPART NUMBER 11100013Features4-inch, fibreglass inside-outside copper voice coil1800 Watt continuous program power handling97.5 dB Sensitivity35 Hz - 1.5 kHz Frequency rangeIncredibly linear frequency response characteristics, the highest power handlingof any comparable 15-inch neodymium transducer, the lower power compression.The LF15N401 uses a fibre loaded cone assembly along with a high excursion tripleroll, constant geometry surround. This combination provides remarkable strengthand a peak to peak maximum excursion of 52 mm. The unique Dual-forced airventing system guarantee a very efficient voice coil ventilation for minimum powercompression and higher power handling.ApplicationsThe LF15N401 is ideal for use in applications where incredible power handling,long excursion and light weight is required. Specially designed for touring, perfectfor high quality professional bass reflex and bass-horn systems.The transducer’s low frequency extension and control also makes it ideal for usewithin critical listening applications such as studio monitoring subwoofer systems.Dual-forced air ventilation and 15 mm top plate forminimum power compressionDual spider design with silicon based dampeningcontrolTriple-roll surround and corrugated straight conegeometry351500820 100 1.000 10.000 20.000
8 x ø 6.5 mm holes to 45°on 371 and on 376 mm144 mmø 393 mm16 mmGeneral SpecificationsNominal DiameterRated ImpedanceProgram Power 1Power handling capacity 2Sensitivity 3Frequency RangeEffective Piston DiameterMax Excursion Before Damage (peak to peak)Minimum ImpedanceVoice Coil DiameterVoice Coil MaterialVoice Coil Winding DepthNumber of layersKind of layerTop Plate ThicknessCone MaterialCone DesignSurround MaterialSurround Design380/15818009009735 - 1500340/13.452/2.16,3100/4Copper25/1.02inside/outside15/0.6No pressed pulpStraightPolycottonTriple rollmm/inchohmWattsWattsdBmm/inchmm/inchohmmm/inchmm/inchThiele - Small Parameters4SPL, 1w/1m (dB)1101009080ø 140 mmø 351 mmResonance frequencyDC resistanceMechanical factorElectrical factorTotal factorBL FactorEffective Moving MassEquivalent Cas air loadEffettive piston areaMax. linear excursion (mathematical) 5Voice - coil inductance @ 1KHzHalf-space efficiencyFsReQmsQesQtsBLMmsVasSdXmaxLe1KEff345.15.80.230.2227.81581600.0918.82.52.64HzohmT · mgrlitersm 2mmmH%Impedance (ohms)3161001020 100 1.000 10.000 20.000Frequency (Hz)Frequency response curve of the loudspeaker taken in a hemispherical, free field environment and mounted in aclosed box with an internal volume of 600 litres (21,2 cu.ft) enclosing the rear of the driver.Mounting InformationOverall DiameterBolt Circle DiameterBolt Hole DiameterFront Mount Baffle Cut-outRear Mount Baffle Cut-outDepthVolume occupied by the driver 6393/15.5371-376/14.6-14.86.5/0.3354/13.9354/14.2158/6.23.8/0.13mm/inchmm/inchmm/inchmm/inchmm/inchmm/inchliters/ft3Shipping Information20 100 1.000 10.000 20.000Frequency (Hz)Impedance magnitude curve measured in free air.Net WeightShipping Weight8.6/19.19.3/20.7Kg/LbsKg/LbsNotes to Specifications1 Program Power is defined as 3 dB greater than AES power. - 2 AES standard. - 3 Sensitivity measurement is based on a 100-500 Hz pink noise signal with input power of 2.83V @ 8 Ohms. - 4 Thiele-Small parameters are measured after a2 hour warm up period running the loudspeaker at full power handling capacity. - 5 The maximum linear excursion is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg the gap depth. - 6 Calculated for front mountingon 18 mm thick board.9
Page 1: PRECISION TRANSDUCERS2006the rules
Page 4 and 5: LOW FREQUENCYNEODYMIUMTRANSDUCERSFo
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Page 31 and 32: 8 x ø 8 mm holes to 45°on 438 mm1
Page 33 and 34: 8 x ø 8 mm holes to 45°on 438 mm
Page 35 and 36: 8 x ø 6.5 mm holes to 45°on 371 m
Page 55 and 56: 8 holes ø 7 mm to 45°on ø 296 mm
Page 57 and 58: 8 holes ø 6,5 mm to 45°on ø 293
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8 holes ø 7 mm to 45°on ø 296 mm
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4 holes ø 6,5 mmon ø 221 mmGenera
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4 holes ø 6,5 mmon ø 221 mmGenera
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03/2006the rules of soundcod. 10116
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