SB Acoustics Satori MR13P-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 41Hz
• Mechanical quality factor QMS 2.80
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.23

Large signal parameters

• Maximum linear excursion xmax 3mm
• Air volume displaced at xmax VD 21cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.11mH
• VC Diameter 30.5mm
• Winding height HVC 11mm
• Winding material Copper Clad Aluminium
• Former material Glass Fiber

Magnet

• Flux density B 1.08T
• Force factor Bl 4.3N/A
• Motor constant Bl/√RE 2.37N/√W
• Air gap height HAG 5mm
• Weight 0.1kg
• Material Neodymium

Diaphragm

• Effective diameter 94mm
• Effective area SD 70cm²
• Moving mass MMS 5.4g
• Moving mass (without air load) MMD 4.9g
• Material EGYPTIAN PAPYRUS™ fibres (made in-house)

Suspensions

• Stiffness KMS 0.358N/mm
• Compliance CMS 2790µm/N
• Equivalent volume to the compliance VAS 19.4L
• Mechanical resistance RMS 0.5N·s/m
• Surround material Rubber
• Spider material BIMAX

Dimensions

• Nominal diameter 5″
• 127mm
• Volume occupied by the driver (estimated) 0.3L
• Net weight 0.78kg
• Frame material Cast aluminium