Celestion TF1525 15" Low Frequency Speaker - 8 ohm

• 15in bass and mid-range speaker driver unit providing 98dB sensitivity and
• Nominal diameter : 381mm / 15in
• Power rating : 250W
• Continuous power rating : 500W
• EIA power rating : 400W
• Rated impedance : 8Ω
• Sensitivity : 98dB
• Frequency range : 40-3000Hz
• Chassis type : Pressed steel
• Magnet type : Ferrite
• Voice coil diameter : 64mm / 2.5in
• Voice coil material : Round copper
• Former material : Polyimide
• Cone material : Kevlar loaded paper
• Surround material : Cloth-sealed
• Suspension : Single
• Gap height (Hg) : 8mm / 0.31in
• VC winding height (Hvc) : 13mm / 0.51in

Parameters

• Sd : 855.30cm2 / 132.57in2
• Fs : 47.60Hz
• Qms : 3.835
• Qes : 0.565
• Qts : 0.493
• Re : 5.15Ω
• Vas : 148.41l / 5.24ft3
• BI : 14.57Tm
• Cms : 0.14mm/N
• Le (at 1kHz) : 0.90mH
• Xmax : 4.5mm / 0.18in

Mounting Information

• Overall diameter : 385mm / 15.16in
• Overall depth : 153mm / 6in
• Cut-out diameter : 351mm / 13.82in
• Mounting hole dimensions : 9.2x6.2mm / 0.36x0.24in
• Number of mounting holes : 8
• Mounting hole PCD : 369mm / 14.56in
• 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