Haut-parleur 38 cm Precision Devices PD.1550
[PD.1550-8] Avis/Critiques Designed specifically to provide powerful and accurate bass frequencies with minimal distortion and power compression.
Suitable for sound reinforcement in a variety of enclosure types since it allows enclosure designers considerably more freedom with specialised loading techniques without having to make allowances for physical characteristics or power handling limitations which are typically the result of more traditional designs.
DISPONIBLE EN VERSION 4 et 16 OHM sur commande et par 2 pièces uniquement.
• Heavy duty 15” cast aluminium frame with extra wide flange for increased rigidity
• Woofer
• Field replaceable magnet for touring applications
• 600WRMS
• 4” copper voice coil assembly
• 110 oz. ceramic magnet
• Power compression only 2.7dB 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
• Improved linear excursion and efficient thermal path to effectively dissipate heat produced by the voice coil
• A B/L in excess of 26T/m which contributes to the speed, accuracy and fidelity of the unit maintaining control of the cone under the most demanding operating conditions
*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.1550 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 38cm (15”)
Power rating 1 600 Watts
Frequency range 40Hz to 1.5kHz
Nominal Impedance 4, 8 or 16 Ohms
Sensitivity 2 (1 W 1 M) 99 dB
Highest Recommended Crossover 3 450 Hz
Resonance 31 Hz
Enc.Vol. Recommended 80 to 200 Litres
Effective Piston Diameter 336 mm (13.24”)
Displacement limit (peak-peak) 22 mm (0.88”)
Voice coil diameter 101 mm (4”)
Voice coil Copper
Voice coil winding depth 22 mm (0.87”)
Voice coil wire length 37.3M (122.5’)
Magnet gap depth 10 mm (0.394”)
Magnet material/mass Ceramic/3.0 Kg (110 oz.)
Flux Density 1.5 T
Cone/Surround Paper/Fabric
Notes
1. AES Standard (40 to 400 Hz) Program 1200 Watts
2. Sensitivity is derived from the sine wave response between 60 - 450 Hz at 5W/2M
using Zmin. It should be noted that not all manufacturers’ sensitivity figures are
based on this AES Recommended Practice.
3. In less demanding applications, the crossover point may be higher.
Thiele - Small Parameters
Fs 31 Hz
Revc 6.4 Ohms
Qts 0.21
Qms 5.55
Vas 242 Litres
Qes 0.22
Mms 123.4 grams
Sd 890 sq cm
Cms 215 μM/N
BL 26.34 T/m
Xmax 8.2 mm
Vd 7x10-4 m3
No 3.14%
Pmx 600 Watts
Notes
4. Thiele - Small Parameters follow a 600 Watt preconditioning period.
Response Detail
Response measured in a half space environment using a vented enclosure of 107 litres.
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
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