Beyma SM-108

Mid Bass

Nominal diameter8″ / 200 mm
Resonance71 Hz
Q factor0.32
Sensitivity93.2 dB
Linear excursion± 6 mm
Program Power300 W
Discontinued
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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 93.2dB
  • Frequency response 70 - 6000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 71Hz
  • Mechanical quality factor QMS 3.80
  • Electrical quality factor QES 0.35
  • Total quality factor QTS 0.32

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Maximum excursion before damage xlim 11mm
  • Air volume displaced at xmax VD 132cm³
  • Power handling P 150W
  • Program power Pmax 300W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 0.9mH
  • VC Diameter 51.7mm
  • Winding height HVC 15mm

Magnet

  • Force factor Bl 14N/A
  • Motor constant Bl/√RE 5.62N/√W
  • Air gap height HAG 7mm
  • Material Ferrite

Diaphragm

  • Effective diameter 167mm
  • Effective area SD 220cm²
  • Moving mass MMS 24g
  • Moving mass (without air load) MMD 21.7g

Suspensions

  • Stiffness KMS 4.76N/mm
  • Compliance CMS 210µm/N
  • Equivalent volume to the compliance VAS 14.4L
  • Mechanical resistance RMS 2.8N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall depth 94mm
  • Volume occupied by the driver (estimated) 0.84L
  • Net weight 3.1kg
Beyma SM-108 Impedance
Beyma SM-108 SPL & Distortion
Beyma SM-108 Dimensions

Similar woofers to Beyma SM-108

Jensen BP 8/150 Bass Guitar Speaker

Jensen BP 8/150

8 Ω
8 Bass Guitar Speaker
fS74.7 Hz
SD214 cm²
QTS0.33
xmax3.1 mm
SPL1W93.2 dB
Bl/√RE5.39
Pmax300 W
Oberton 8MB201 Mid-range

Oberton 8MB201

8 Ω
8 Mid-range
fS67.7 Hz
SD200 cm²
65 - 3000 Hz
QTS0.31
xmax7 mm
SPL1W93 dB
Bl/√RE5.21
Pmax400 W
PHL audio 2420 Mid Bass

PHL audio 2420

8 Ω
8 Mid Bass
fS72 Hz
SD219 cm²
70 - 3000 Hz
QTS0.33
xmax5.5 mm
SPL1W92.7 dB
Bl/√RE5.55
Pmax400 W