Celestion LF Cast Chassis Neo NTR10-2520D

* 10" neodymium mid/bass unit offers 250Wrms (AES standard) power handling and 96dB sensitivity

* 2.5" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression

* "M-roll" surround provides progressive excursion control, yielding a smooth response even at extremes of frequency range

* Extremely lightweight design combined with a highly efficient magnet assembly results in exceptional power-to-weight ratio

* Intelligent heat management in both chassis and magnet assembly design further minimises distortion

8 Ohm Frequency Response

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 2

3. Xmax derived from: (voice coil winding width-gap depth)/2.

4. Small signal parameters measured after unit subjected to pre-conditioning signal.


* Nominal diameter 254mm/10in

* Power rating (1) 250Wrms

* Nominal impedance 8 Ohm

* Sensitivity (2) 96dB

* Frequency range 55-3500Hz

* Voice coil diameter 64mm/2.5in

* Chassis type Cast aluminium

* Magnet type Neodymium

* Coil material Copper clad aluminium

* Former material Glass fibre

* Cone material Kevlar loaded paper

* Surround material Cloth sealed

* Suspension Single

* Xmax (3) 4mm/0.16in

* Gap depth 8mm/0.32in

* Voice coil winding width 16mm/0.63in

Small Signal Parameters (4)

* D 0.21m/8.27in

* Fs 56.7Hz

* Mms 40.22g/1.42oz

* Qms 2.763

* Qes 0.411

* Mmd 36.57g/1.29oz

* Qts 0.358

* Re 6.11O

* Vas 33.28lt/1.17ft3

* BI 14.6Tm

* Cms 0.196mm/N

* Rms 5.184kg/s

* Le (at 1kHz) 0.55mH

Mounting Information

* Diameter 260mm/10.24in

* Overall depth 113mm/4.45in

* Cut-out diameter 232mm/9.13in

* Mounting slot dimensions 7.5mm x 6.5mm/0.3in x 0.26in

* Number of mounting slots 4

* Mounting PCD range 244-247mm/9.6-9.7in

* Unit weight 2.2kg/4.89lb

Packed Dimensions & Weight

* Single pack size W x D x H 305mm x 305mm x 150mm / 12.0in x 12.0in x 5.9in

* Single pack weight 2.5kg/5.5lb

* Multipack (96) size W x D x H 1080mmx880mmx840mm / 42.5in x 34.6in x 33.1in

* Multi pack (96) weight 235kg/518lb