Haut-parleur 61cm Precision Devices PD.2450
[PD.2450-8] Avis/Critiques

Designed specifically to provide powerful sub bass frequencies with minimal distortion and power compression.
The PD.2450 offers a fast responsive sound and is an outstanding drive unit, suitable for sound reinforcement in a variety of enclosure types since it allows designers considerably more freedom with enclosure design and specialised loading techniques without having to allow for physical characteristics or power handling limitations which are typically the result of more traditional designs.
Perfectly at home in new or refurbished horn loaded sub bass systems this unit also delivers powerful lows in reflex designs, such as home theatre and house of worship applications.

DISPONIBLE EN VERSION 4 et 16 OHM sur commande et par 2 pièces uniquement.

• Heavy duty 24” cast aluminium frame with extra wide flange for increased rigidity
• Sub Woofer
• Field replaceable magnet for touring applications
• 1000WRMS
• 6” copper voice coil assembly
• 220 oz. ceramic magnet
• Power compression only 2dB at rated power *1
• Distortion *2 2nd Harmonic <1% 3rd Harmonic <1%
• Advanced magnetic assembly incorporating a composite alloy and steel pole piece giving a uniform and stable magnetic field, improving linear excursion and providing an efficient thermal path to dissipate the heat produced by the voice coil.
• A B/L in excess of 32 T/m for fast accurate lows
• Double suspension system maintaining a pure piston action for the moving mass even when driven with the most complex programme input signals and provides additional durability against the rigours of life on the road

*1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL therefore the maximum SPL of the PD.2450 may significantly exceed that of other manufacturers with high published power ratings.
*2 Distortion is measured at 10% of the rated power (AES Standard).

Specifications
Nominal Diameter 61 cm (24”)
Power rating 1 1000 Watts
Frequency range 30 to 1 kHz
Nominal Impedance 4, 8 or 16 Ohms
Sensitivity 2 (1 W 1 M) 99 dB
Resonance 25 Hz
Enc.Vol. Recommended 130 to 400 Litres
Displacement limit (peak-peak) 36 mm (1.42”)
Voice coil diameter 152 mm (6.0”)
Voice coil Copper
Voice coil winding depth 30 mm (1.18”)
Magnet gap depth 15 mm (0.59”)
Magnet material/mass Ceramic/6.12 Kg (220 oz.)
Flux Density 1.1 T
Suspension (Spider) Dual Fabric
Cone/Surround Paper/Fabric
Dust dome Paper

Notes
1. AES Standard (40 to 400 Hz) Program 2000 Watts
2. AES Recommended Practice.

Thiele - Small Parameters
Fs 30.477 Hz
L1 1.917 mH
Revc 5.58 Ohms
L2 3.733 mH
Res 110.05 Ohms
RMSE-load 2.223 Ohms
Qts 0.33
RMSE-free 1.26 Ohms
Qms 6.890
Vas 565.373 Litres
Qes 0.35
Mms 342.347 grams
Sd 2248.01 sq cm
Cms 79.333 μM/N
R2 11.373 Ohms
BL 32.357 T/m
Xmax 10.5 mm

Notes
3. Thiele - Small Parameters follow a 1000 Watt preconditioning period.

Response Detail

Half space response measured in a 975 Litre sealed box.

Mechanical Data

Precision Devices operate a policy of continuous research and development. The implementation of new materials or production methods will always equal or exceed the published specifications, which may change without notice. Details shown on this sheet are correct at time of printing. March 2008