Dayton Audio RC180-55

Woofer

Nominal size2x7″ / 55x180 mm
Resonance52 Hz
Q factor0.89
Sensitivity76.3 dB
Linear excursion± 4.7 mm
Program Power70 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 76.3dB
  • Frequency response 50 - 2500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 52Hz
  • Mechanical quality factor QMS 3.31
  • Electrical quality factor QES 1.23
  • Total quality factor QTS 0.89

Large signal parameters

  • Maximum linear excursion (one way) xmax 4.7mm
  • Air volume displaced at xmax VD 27cm³
  • Power handling P 35W
  • Program power Pmax 70W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.3Ω
  • Inductance (1kHz) LE 0.1mH
  • Former material Aluminum

Magnet

  • Force factor Bl 4.23N/A
  • Motor constant Bl/√RE 2.33N/√W
  • Material Neodymium

Diaphragm

  • Effective diameter 85mm
  • Effective area SD 56.4cm²
  • Moving mass MMS 20.1g
  • Moving mass (without air load) MMD 20.1g
  • Material Paper

Suspensions

  • Stiffness KMS 2.17N/mm
  • Compliance CMS 460µm/N
  • Equivalent volume to the compliance VAS 2.04L
  • Mechanical resistance RMS 1.98N·s/m
  • Surround material Rubber

Dimensions

  • Nominal size 2 x 7
  • 55 x 180mm
  • Overall size 58 x 176mm
  • Baffle cutout diameter 159mm
  • Overall depth 77mm
  • Volume occupied by the driver (estimated) 0.11L
  • Frame material Polymer
Dayton Audio RC180-55 Impedance
Dayton Audio RC180-55 SPL
Dayton Audio RC180-55 Dimensions

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