Celestion FTR15-3070C 15" Low Frequency Speaker - 8 ohm - Open Box

• Full gap flux saturation for increased Bl and reduced distortion
• Glass loaded paper cone with weather-resistant impregnation
• Airflow vented magnet assembly for dynamic heat dispersion
• Nominal diameter381mm / 15in
• Power rating : 400W
• Continuous power rating : 800W
• EIA power rating : 500W
• Rated impedance : 8Ω
• Sensitivity : 99dB
• Frequency range : 40-4000Hz
• Chassis type : Cast aluminium
• Magnet type : Ferrite
• Voice coil diameter : 75mm / 3in
• Voice coil material : Round copper
• Former material : Glass fibre
• Cone material : Glass loaded paper (weather-resistant)
• Surround material : Cloth-sealed
• Suspension : Single
• Gap height (Hg) : 10mm / 0.39in
• VC winding height (Hvc) : 16mm / 0.63in

Parameters

• Sd : 855.30cm2 / 132.57in2
• Fs : 41.40Hz
• Mms : 81.73g / 2.88oz
• Qms : 3.510
• Qes : 0.429
• Qts : 0.382
• Re : 6.07Ω
• Vas : 187.62l / 6.63ft3
• BI : 17.33Tm
• Cms : 0.18mm/N
• Rms : 6.05kg/s
• Le (at 1kHz) : 0.59mH
• Xmax : 5.5mm / 0.22in

Mounting Information

• Overall diameter : 385mm / 15.16in
• Overall depth : 158mm / 6.2in
• Cut-out diameter : 351mm / 13.82in
• Mounting hole dimensions : 10x7mm / 0.39x0.27in
• Number of mounting holes : 8
• Mounting hole PCD : 365-375mm / 14.37-14.76in
• Power rating : 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.
• Continuous power rating : Defined as 3dB greater than the AES rating.
• Sensitivity : Measured on axis at 1W, 1m in 2π anechoic environment.
• Parameters : Measured after unit subjected to pre-conditioning signal.
• Xmax : 0.5(Hvc-Hg) + 0.25Hg