Hertz EMV 100.5 4" 40W RMS Comp Energy Midwoofers

Engineered for premium audio performance, this speaker features a V-cone® design that delivers outstanding off-axis response with crisp, detailed mid-high frequencies. The water-repellent treated paper cone and durable butyl rubber surround ensure long-lasting reliability and controlled sound reproduction. A pure copper voice coil wound on an aluminium former provides excellent thermal handling and mechanical strength, while the large motor assembly offers precise control for clean, accurate output. Low-carbon plates enhance magnetic efficiency and heat dissipation, and a rubber magnet cover reduces vibration while protecting against everyday wear. Finished with a scratch and corrosion resistant DIN-size basket, high-current tin-plated terminals, and silver-plated lead wires, this speaker is built for dependable performance. Epoxy bonding throughout the motor system and a curve-memory Nomex spider ensure consistent sound quality you can rely on.

Technical Specifications
Component: Midwoofer
Size mm (in.): 100 (4)
Power handling (W peak): 120, (W continuous): 40
Impedance (Ω): 4
Frequency response (Hz): 80 - 7.5k
Sensitivity (dB SPL): 91
Magnet size (D·d·h mm (in.)): 70 x 32 x 10 (2.7 x 1.26 x 0.4)
Voice coil Ø (mm (in.)): 25 (1)
Magnet: High density flux ferrite
Cone: Water repellent pressed paper
Weight of one component (kg (lb.)): 0,45 (0.99)

Electro-Acoustic Parameters
D mm: 88
Xmax mm: 1,5
Re Ω: 3
Fs Hz: 104
Le mH: 0,15
Vas l: 2,3
Mms g: 5,3
Cms mm/N: 0,44
BL T·m: 3,5
Qts: 0,68
Qes: 0,87
Qms: 3,1
Spl dB: 91