Precision Devices PD.2155-1N

新型バスケットと5.5インチ径のinside/outsideボイスコイルを採用。

重量はわずか12.5kg。

この1Nシリーズは、PD.185N02のUK ‘NEXT GENERATION’ LINEを継ぐシリーズだと思う。

控えめなスペックに凄みを感じる。

GENERAL SPECIFICATIONS

Nominal Diameter 21” / 530 mm

Voice Coil Diameter 5.5” / 138.7 mm

Available Impedances 8 Ohm

Power Rating 1 2 * 1500 W (A.E.S.)

Peak Power (6dB Crest Factor)* 6000 W (A.E.S.)

Sensitivity (1W – 1m)* 98 dB

Frequency Range 30 Hz - 300 Hz

Recommended Enclosure Volume 150 - 200 Litres

Resonance 33 Hz

Voice Coil Winding Depth 26.00 mm / 1.02”

Magnet Gap Depth 13.0 mm / 0.51”

Flux Density 1.45 Tesla

Magnet Material Neodymium

Magnet Weight

Voice Coil Material Copper

Former Material Glass Fibre

Dust Dome Material Solid Paper

Suspension Material Fabric

Cone Material Paper

Surround Material Fabric

SHIPPING INFORMATION

Nett Weight 12.50 kg / 27.56 lb

Shipping Weight 14.5 kg / 29.56 lb

THIELE SMALL PARAMETERS

Fs 33 Hz

Re 5.1 Ω

Qms 9.8

Qes 0.374

Qts 0.36

Le (@1 kHz) -

Le (@10 kHz) 2.4 mH

Vas 241 Litres

Mms 320 g

Sd 1520 cm2

Cms 73.4 μm/N

BL 30 T/m

Xmax 11.00 mm

Vd 1.67 Litres

Ref. Efficiency 2.2%

EBP 88.24 Hz

DIMENSIONS & MOUNTING

Overall Diameter 21” / 530 mm

Widths Across Flats 532 mm

Flange Height 14 mm

Depth (Excl. Flange) 214 mm

Magnet Diameter 184 mm

Chassis Shoulder Diameter 492 mm

Outer Bolt Circle x6 M6 on 528 mm PCD

Inner Bolt Circle