HELIX COMPOSE Ci7 W165FM-S3

Name: Ci7 W165FM-S3
Brand: HELIX

Mid Bass

6.5″ / 165 mm

Nominal diameter

60 Hz

Resonance

0.55

Q factor

87 dB

Sensitivity

± 3.7 mm

Linear excursion

225 W

Program Power

Sensitivity (1w, 1m, infinite baffle)

SPL_1W

87.1

Frequency response

50 - 3500

Thiele & Small parameters

Resonance frequency (free air)

f_S

60.0

Mechanical quality factor

Q_MS

3.00

Electrical quality factor

Q_ES

0.68

Total quality factor

Q_TS

0.55

Large signal parameters

Maximum linear excursion

x_max

3.7

Air volume displaced at x_max

V_D

cm³

Power handling

150

Program power

P_max

225

Voice Coil

Nominal impedance

DC resistance

R_E

2.9

Inductance (1kHz, estimated)

L_E

0.2

VC Diameter

Winding height

H_VC

13.4

Magnet

Force factor

4.8

N/A

Motor constant

Bl/√R_E

2.82

N/√W

Diaphragm

Effective diameter

129

Effective area

S_D

131

cm²

Moving mass

M_MS

14.8

Moving mass (without air load)

M_MD

13.7

Suspensions

Stiffness

K_MS

2.08

N/mm

Compliance

C_MS

480

µm/N

Equivalent volume to the compliance

V_AS

11.6

Mechanical resistance

R_MS

1.83

N·s/m

Dimensions

Nominal diameter

6.5

″

165

Overall diameter

165

Baffle cutout diameter

142

Mounting depth

Volume occupied by the driver (estimated)

0.5

Datasheet

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S_D

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