Dayton Audio DMA70-8

Full-range

Nominal diameter2.5″ / 64 mm
Resonance114 Hz
Q factor0.50
Sensitivity83 dB
Linear excursion± 2 mm
Program Power40 W
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 83dB
  • Frequency response 110 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 114Hz
  • Mechanical quality factor QMS 2.06
  • Electrical quality factor QES 0.73
  • Total quality factor QTS 0.50

Large signal parameters

  • Maximum linear excursion xmax 2mm
  • Air volume displaced at xmax VD 4.6cm³
  • Power handling P 20W
  • Program power Pmax 40W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.5Ω
  • Inductance (1kHz) LE 0.5mH
  • VC Diameter 25.4mm

Magnet

  • Force factor Bl 4.7N/A
  • Motor constant Bl/√RE 1.72N/√W

Diaphragm

  • Effective diameter 54mm
  • Effective area SD 22.9cm²
  • Moving mass MMS 2.6g
  • Moving mass (without air load) MMD 2.5g

Suspensions

  • Stiffness KMS 1.37N/mm
  • Compliance CMS 730µm/N
  • Equivalent volume to the compliance VAS 0.566L
  • Mechanical resistance RMS 0.9N·s/m

Dimensions

  • Nominal diameter 2.5
  • 64mm
Dayton Audio DMA70-8 Impedance
Dayton Audio DMA70-8 SPL
Dayton Audio DMA70-8 Dimensions

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