SPECIFICATION

Model

21PDM125

MECHANICAL SPECIFICATIONS

Overall diameter

545

mm

Bolt circle diameter

520

mm

Baffle cutout diameter

494

mm

Depth

244

mm

Flange and Gasket

20

mm

Net weight

22.5

kg

Shipping box (single carton box)

580x580x285

mm

ELECTRICAL SPECIFICATIONS

Nominal diameter

21"

inch

Nominal impedance

8

Ω

Nominal power handling

1200

W

Sensitivity (1W/1m)

97

±  2dB

Frequency range (-10dB max)

25-2000

Hz

Voice coil diameter

5"/125

mm

Voice coil material

Inside/Outside

Cu

Former material

GBF

Winding depth

32

mm

T yoke

16

mm

Plate

15

mm

Magnet

230 OZ

Basket

Cast aluminium

THIELE & SMALL PARAMETERS

Fo

25

Hz

Revc

5.2

Ω

Sd

1720

cm ^2

Vas

449

L

Cms

0.11

mm/N

Mms

356

g

Bl

29.35

Tm

Qms

6.43

Qes

0.35

Qts

0.33

Le1

1.63

mH

Le2

3.83

mH

Rp

12.99

ohms

24 hours in free air according to EIA-426B