Precision Devices PD.1845-1N

 

ボイスコイルは4.5インチの"SPLIT WINDING COPPER CLAD ALUMINIUM VOICE COIL"。

この"SPLIT WINDING"というのがどんな巻き方なのか不明。

WinISDでみてみるとPD.1850系とは異なる。

ライバルはRCFのLF18N451か？

GENERAL SPECIFICATIONS

Nominal Diameter 18” / 457.2 mm

Voice Coil Diameter 4.5” / 114.3 mm

Available Impedances 4 / 8 / 16 Ohm

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

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

Sensitivity (1W – 1m)* 98.8 dB

Frequency Range 30 Hz - 1 kHz

Recommended Enclosure Volume 200 Litres

Resonance 34.1 Hz

Voice Coil Winding Depth 16.00 mm / 0.63”

Magnet Gap Depth 15.0 mm / 0.59”

Flux Density 0.92 Tesla

Magnet Material Neodymium

Magnet Weight

Voice Coil Material Copper Clad Aluminium

Former Material Glass Fibre

Dust Dome Material Solid Paper

Suspension Material Poly Cotton

Cone Material Paper

Surround Material M Roll Poly Cotton

THIELE SMALL PARAMETERS

Fs 34.1 Hz

Re 4.70 Ω

Qms 10.961

Qes 0.333

Qts 0.324

Le (@1 kHz) -

Le (@10 kHz) 1.578 mH

Vas 179.04 Litres

Mms 231.489 g

Sd 1158.12 cm2

Cms 0.094 mm/N

BL 26.424 T/m

Xmax 16.00 mm

Vd -

Ref. Efficiency 2.65%

EBP 102.40 Hz

DIMENSIONS & MOUNTING

Overall Diameter 18” / 457.2 mm

Widths Across Flats 459 mm

Flange Height 14.5 mm

Depth (Excl. Flange) TBC

Magnet Diameter TBC

Chassis Shoulder Diameter 415 mm

Outer Bolt Circle x6 M6 on 456 mm PCD

Inner Bolt Circle

SHIPPING INFORMATION

Nett Weight 10.90 kg / 24.03 lb

Shipping Weight TBC