Haut-parleur 38cm Neodym Precision Devices PDN.18SB40
[PDN.18SB40-8] Avis/Critiques

Designed to provide superlative performance when used in either horn-loaded or reflex enclosures where fast accurate lows are demanded.
Neodymium technology ensures superb versatility in situations in which a conventional ceramic magnet transducer is unsuitable on grounds of portability or ease of installation.
An exemplary choice for upgrade or replacement situations where the capability of the PDN.18SB40 to “drop in” and provide outstanding bass response makes this a versatile and highly effective unit.
Well suited to use with PDN.10MH25/ PDN.12MH25 and PD compression driver in direct
radiating/horn loaded systems where the double suspension system allows it to thrive in the demanding touring sector.

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

• Heavy duty 18” cast aluminium frame with extra wide flange for increased rigidity
• Sub Woofer
• Field replaceable magnet for touring applications
• 600WRMS
• 4” copper voice coil assembly
• Neodymium magnet assembly
• A B/L in excess of 25 T/m for fast acurate lows
• Net Weight: 8.5kg

Specifications
Nominal diameter 46cm (18”)
Voice coil diameter 101mm (4”)
Nominal impedance 4, 8 or 16 Ohms
Power rating (AES) 1 600 Watts
Sensitivity 2 (1W/1M) 98 dB/1W/1m
Frequency range 40-3.5 KHz
Enc Vol recommended 100-350 Litres
Displacement limit (peak-peak) 34 mm
Nett weight 8.5 Kg
Resonance 40 Hz
Voice coil copper
Voice coil winding depth 19 mm
Magnet gap depth 11 mm
Flux Density 1.2 T
Dust dome Paper
Suspension Double fabric
Cone/Surround Paper/cloth

Notes
1. AES Standard (40 to 400 Hz) Program 1200 Watts
2. AES Recommended Practice.

Thiele - Small Parameters
Fs 38.527 Hz
L1 1.056 mH
L2 2.440 mH
Res 188.493 Ohms
RMSE-load 3.163 Ohms
Qts 0.325
RMSE-free 2.717 Ohms
Qms 10.520
Vas 201.323 Litres
Qes 0.336
Mms 153.124 grams
Sd 1134.11 sq cm
Cms 111.445 μM/N
R2 9.939 Ohms
BL 25.772T/m
Xmax 6.0 mm
Re 6.015 Ohms

Notes
3. Thiele - Small Parameters follow a 600 Watt preconditioning period.

Response Detail

Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system.

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