Peerless GBS-115N25AL01-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB
• Frequency response 90 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 90Hz
• Mechanical quality factor QMS 3.46
• Electrical quality factor QES 0.77
• Total quality factor QTS 0.63

Large signal parameters

• Maximum linear excursion xmax 4.9mm
• Air volume displaced at xmax VD 28cm³
• Power handling P 20W
• Program power Pmax 40W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.344mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 4.53N/A
• Motor constant Bl/√RE 2.49N/√W
• Air gap height HAG 5mm
• Material Neodymium

Diaphragm

• Effective diameter 86mm
• Effective area SD 58.1cm²
• Moving mass MMS 8.45g
• Moving mass (without air load) MMD 8.1g
• Material Aluminum

Suspensions

• Stiffness KMS 2.7N/mm
• Compliance CMS 370µm/N
• Equivalent volume to the compliance VAS 1.79L
• Mechanical resistance RMS 1.38N·s/m
• Surround material NBR Rubber

Dimensions

• Nominal diameter 4.5″
• 114mm
• Volume occupied by the driver (estimated) 0.19L
• Net weight 0.21kg