GRS 8SMP-8

4Ω
8Ω

Woofer

Nominal diameter8″ / 218 mm
Resonance41 Hz
Q factor0.46
Sensitivity87.7 dB
Linear excursion± 5.5 mm
Program power120 W
GRS 8SMP-8 WooferGRS 8SMP-8 WooferGRS 8SMP-8 Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB
  • Frequency response 30 - 1500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 41Hz
  • Mechanical quality factor QMS 2.85
  • Electrical quality factor QES 0.55
  • Total quality factor QTS 0.46

Large signal parameters

  • Maximum linear excursion (one way) xmax 5.5mm
  • Air volume displaced at xmax VD 116cm³
  • Power handling P 60W
  • Program power Pmax 120W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.8Ω
  • Inductance (1kHz) LE 0.41mH
  • VC Diameter 39mm
  • Former material Aluminum

Magnet

  • Force factor Bl 8.95N/A
  • Motor constant Bl/√RE 3.72N/√W
  • Diameter 135mm
  • Height 25mm

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 211cm²
  • Moving mass (including air load) MMS 29.5g
  • Moving mass MMD 27.1g
  • Material Damped poly cone

Suspensions

  • Stiffness KMS 1.96N/mm
  • Compliance CMS 510µm/N
  • Equivalent volume to the compliance VAS 32.5L
  • Mechanical resistance RMS 2.67N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 8″
  • 218mm
  • Overall diameter 218mm
  • Baffle cutout diameter 209mm
  • Overall depth 94mm
  • Flange thickness 6mm
  • Mounting depth 87mm
  • Volume occupied by the driver (estimated) 0.85L
Impedance
SPL
GRS 8SMP-8 Impedance
GRS 8SMP-8 SPL
GRS 8SMP-8 Dimensions
PDF fileDatasheet

Export this driver to a box design software:

Closed Box Simulator·Speakerbench logoSpeakerbenchWinISD logoWinISDBasta! logoBasta!Hornresp logoHornrespQSpeakers logoQSpeakersSpeakerSim logoSpeakerSimMfbLabs logoMfbLabsAmplion logoAmplion

Similar speaker drivers:

Dayton Audio SIG225-4 Woofer

Dayton Audio SIG225-4

4 Ω
8″ Woofer
fS40 Hz
SD221 cm²
39 - 4500 Hz
QTS0.43
xmax6 mm
SPL1W88 dB
Bl/√RE4.56
Pmax200 W
GRS 8SMP-4 Woofer

GRS 8SMP-4

4 Ω
8″ Woofer
fS38 Hz
SD211 cm²
30 - 1500 Hz
QTS0.39
xmax5.5 mm
SPL1W88.2 dB
Bl/√RE3.88
Pmax120 W
REDCATT 8FHM Woofer

REDCATT 8FHM

4 Ω
8″ Woofer
fS38 Hz
SD206 cm²
QTS0.39
xmax9.1 mm
SPL1W88.3 dB
Bl/√RE4.32
Pmax100 W
mivoc XAW 208 HC Mid Bass

mivoc XAW 208 HC

8 Ω
8″ Mid Bass
fS41 Hz
SD201 cm²
40 - 2000 Hz
QTS0.39
xmax4.5 mm
SPL1W88.7 dB
Bl/√RE4.13
Pmax300 W