MONACOR SPH-300CTC

Name: SPH-300CTC
Brand: MONACOR

Subwoofer

12″ / 308 mm

Nominal diameter

18 Hz

Resonance

0.19

Q factor

90 dB

Sensitivity

± 5.4 mm

Linear excursion

500 W

Program Power

Sensitivity (1w, 1m, infinite baffle)

SPL_1W

89.8

Frequency response

18 - 2500

Thiele & Small parameters

Resonance frequency (free air)

f_S

18.0

Mechanical quality factor

Q_MS

6.50

Electrical quality factor

Q_ES

0.20

Total quality factor

Q_TS

0.19

Large signal parameters

Maximum linear excursion

x_max

5.4

Air volume displaced at x_max

V_D

267

cm³

Power handling

300

Program power

P_max

500

Voice Coil

Nominal impedance

2 x 8

DC resistance (in series)

R_E

12.0

Inductance (1kHz, in series)

L_E

4.4

VC Diameter

Winding material

Kapton

Magnet

Force factor (in series)

24.2

N/A

Motor constant

Bl/√R_E

6.99

N/√W

Diameter

180

Weight

1.8

Diaphragm

Effective diameter

251

Effective area

S_D

495

cm²

Moving mass

M_MS

100

Moving mass (without air load)

M_MD

Suspensions

Stiffness

K_MS

1.33

N/mm

Compliance

C_MS

750

µm/N

Equivalent volume to the compliance

V_AS

225

Mechanical resistance

R_MS

1.74

N·s/m

Dimensions

Nominal diameter

″

308

Overall diameter

308

Baffle cutout diameter

272

Overall depth

130

Flange thickness

Mounting depth

118

Volume occupied by the driver (estimated)

2.6

Net weight

6.32

Datasheet

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