REDCATT 121XR

Subwoofer

Nominal diameter12″ / 320 mm
Resonance46 Hz
Q factor0.33
Sensitivity95 dB
Linear excursion± 12.7 mm
Program Power1000 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 95dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 46Hz
  • Mechanical quality factor QMS 1.56
  • Electrical quality factor QES 0.42
  • Total quality factor QTS 0.33

Large signal parameters

  • Maximum linear excursion (one way) xmax 12.7mm
  • Air volume displaced at xmax VD 674cm³
  • Power handling P 500W
  • Program power Pmax 1000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.6Ω
  • Inductance (1kHz) LE 0.16mH
  • VC Diameter 63.5mm
  • Winding height HVC 18.3mm
  • Winding material Copper
  • Former material kapton

Magnet

  • Force factor Bl 16N/A
  • Motor constant Bl/√RE 6.76N/√W
  • Air gap height HAG 31mm
  • Material Neodymium

Diaphragm

  • Effective diameter 260mm
  • Effective area SD 531cm²
  • Moving mass MMS 66.8g
  • Moving mass (without air load) MMD 57.9g
  • Material Paper

Suspensions

  • Stiffness KMS 5.56N/mm
  • Compliance CMS 180µm/N
  • Equivalent volume to the compliance VAS 69.1L
  • Mechanical resistance RMS 12.4N·s/m
  • Surround material Fabric
  • Spider material Nomex

Dimensions

  • Nominal diameter 12
  • 320mm
  • Overall diameter 320mm
  • Baffle cutout diameter 281mm
  • Mounting depth 173mm
  • Volume occupied by the driver (estimated) 2.2L
  • Net weight 5.1kg
REDCATT 121XR SPL & Impedance
REDCATT 121XR Dimensions

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