Celestion Cf1840Jd 1000W 8Ohm Lf Ferrite
323,00 €
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EAN: 0739894586351
BRAND: Celestion
SCHEDA PRODOTTO
Celestion – CF1840JD 1000W 8ohm – LF Die Cast Chassis Loudspeaker – Ferrite
Altoparlante da 18′ con chassis in fusione d’alluminio, magnete in ferrite, bobina da 4′, potenza 1200Watt, impedenza 8ohm
Caratteristiche
– 18′ ferrite magnet, cast aluminium chassis LF driver delivering 1200Wrms (AES Standard) power handling and 98dB sensitivity
– 4′ high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing sensitivity loss through thermal compression
– FEA optimized magnet assembly and suspension deliver highly symmetrical cone movement, leading to exceptionally low harmonic distortion
– Vented magnet assembly increases airflow to provide enhanced cooling
– Twin demodulation rings reduce flux modulation, minimizing electromagnetic distortion
– Double suspension and ‘multi-roll’ surround provide exceptional linearity at extremes of cone excursion
Specifiche Generali
Nominal diameter: 457mm/18in
Power rating(1): 1200Wrms
Nominal impedance: 8ohm
Sensitivity(2): 98dB
Frequency range: 30-2500Hz
Voice coil diameter: 100mm/4in
Chassis type: Cast aluminium
Magnet type: Ferrite
Magnet weight: 3.18kg/112oz
Coil material: Round copper
Former material: Glass fibre
Cone material: Kevlar loaded paper
Surround material: Cloth-sealed
Suspension: Double
Gap depth: 10mm/0.39in
Voice coil winding width: 30mm/1.18in
Xmax(3): 10mm/0.39in
Parametri di Thiele-Small
D: 0.38m/14.96in
Fs: 44.2Hz
Mms: 215.15g/7.59oz
Qms: 4.21
Qes: 0.496
Mmd: 185.145g/6.54oz
Qts: 0.444
Re: 5.29ohm
Vas: 113.924
BI: 24.758Tm
Cms: 0.063mm/N
Rms: 13.653kg/s
Le (at 1kHz): 0.96mH
Informazioni di Montaggio
Overall diameter: 460mm/18.11in
Overall depth: 220.35mm/8.68in
Cut-out diameter: 414mm/16.3in
Mounting slot dimensions: 11mm x 7mm/0.43-0.28in
Number of mounting slots: 8
Mounting PCD range: 441-432mm/17.36-17.01in
Unit weight: 11.6kg/25.5lb
Note
(1)Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
(2)Measured on axis at 1W, 1m in 2pi anechoic environment.
(3)Xmax derived from: (voice coil winding width-gap depth)/2.
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