Celestion – TF1225 250W 8ohm – LF Pressed Steel Chassis Loudspeaker – Ferrite
Altoparlante da 12′ con chassis in acciaio stampato, magnete in ferrite, bobina da 2.5′, potenza 250Watt, impedenza 8ohm
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Design curato, collaudato e messo a disposizione direttamente da Celestion
Caratteristiche
– 12′ Bass and mid-range driver providing 97dB sensitivity and 250Wrms (AES standard) power handling
– 2.5′ high temperature copper voice coil wound on polyimide for increased reliability
– Optimised ferrite magnet design reduces weight
– Double roll surround for greater excursion control
– For use in 2-way or compact 3-way systems
Specifiche Generali
Nominal diameter: 305mm/12in
Power rating(1): 250Wrms
Continuous power rating(2): 500W
EIA power rating(3): 400W
Nominal impedance: 8ohm
Sensitivity(4): 97dB
Frequency range: 50-4000Hz
Voice coil diameter: 64mm/2.5in
Chassis type: Pressed steel
Magnet type: Ferrite
Magnet weight: 1.2kg/42oz
Coil material: Round copper
Former material: Polyimide
Cone material: Kevlar loaded paper
Surround material: Cloth-sealed
Suspension: Single
Xmax(5): 2.5mm/0.1in
Gap depth: 8mm/0.31in
Voice coil winding width: 13mm/0.51in
Parametri di Thiele-Small
D: 0.26m/10.24in
Fs: 63Hz
Mms: 46.51g/1.64oz
Qms: 6.70
Qes: 0.54
Mmd: 39.60g/1.40oz
Qts: 0.50
Re: 5.13ohm
Vas: 54.5lt/1.92ft3
BI: 13.20Tm
Cms: 0.14mm/N
Rms: 2.76kg/s
Le (at 1kHz): 0.84mH
Informazioni di Montaggio
Overall diameter: 309mm/12.17in
Overall depth: 130mm/5.12in
Cut-out diameter: 283mm/11.14in
Mounting slot dimensions: Ø 7.9/0.31
Number of mounting slots: 4
Mounting PCD range: 297mm/11.69in
Unit weight: 4.1kg/9.0lb
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)Continuous Power Handling is defined as 3dB greater than the AES rating.
(3)Tested as per the EIA-426-A standard.
(4)Measured on axis at 1W, 1m in 2pi anechoic environment.
(5)Xmax derived from: (voice coil winding width-gap depth)/2.
(6)Small signal parameters measured after unit subjected to pre-conditioning signal.
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