SoundQubed HDS-MB8-4 8" HDS Series Midbass W/ Water Resistant Dome Cap 4ohm, 150w/300w

Model: HDS-MB8-4   Sold as: Each

8" HDS Series Midbass with Water Resistant Dome Cap - 1.5" 4 ohm Voice Coil 150w/300w Frequency Response 60Hz - 5KHz

The SoundQubed HDS-MB8-4 is an 8” mid-bass loudspeaker engineered for powerful, weather-resistant performance in any application. Delivering 150W RMS and 300W peak power, this 4-ohm driver features a high-efficiency 97dB sensitivity and a wide 60Hz–5kHz frequency response for tight, punchy mids and upper bass. Built with a coated IP65 water-resistant paper cone, cloth surround, and rugged steel basket, it’s designed to thrive in outdoor, marine, or off-road builds. A 1.5” Kapton voice coil and spider-crossed leads ensure durability under heavy use. Whether in pro audio systems or custom vehicle installs, the HDS-MB8-4 brings clarity and volume with all-weather reliability.

General Specifications
Nominal Diameter: 8" / 203mm
Nominal Impedance: 4 ohms
RMS Power Handling: 150W
MAX Power Handling: 300W
Sensitivity (1w/1m): 97dB
Frequency Response: 60Hz-5KHz
Recommended Hi Pass Crossover: 80 Hz
Features
Cone Shape: Curvilinear
Speaker Terminals: Spade
Water-Resistant Cone: Coated IP65
Motor Specifications
Voice Coil Diameter: 1.5" / 38.1mm
VC Former Material: Kapton
Winding Material: CCAW
Cone Material: Paper
Dust Cap Material: Paper
Surround Material: Cloth
Leads Connection Type: Spider Crossed
Magnet Material: Ferrite
Magnet Weight: 20 Oz
Displacement Volume: 0.48L / 0.016ft³
Basket Material: Steel
Basket Color/Finish: Satin Black
Thiele & Small Parameters
Equivalent Volume (Vas): 16.4L / 0.579ft³
Excursion (one way) (Xmax): 1.8mm
Free Air Resonance (Fs): 85Hz
Mechanical Factor (Qms): 1.62
Electrical Factor (Qes): 0.43
Total Factor (Qts): 0.34
Mechanical Mass (Mms): 13.78g
Mechanical Compliance (Cms): 0.25mm/N
BL Factor (BL): 7.82
Voice Coil Inductance (Le): 0.38mH
Cone Area (Sd): 213.82cm²
DC Resistance (Re): 3.5 Ohms
Speaker Measurements
Overall Diameter: 8.1" / 206mm
Overall Depth: 3.8" / 98mm
Front Mount Baffle Cutout: 7.2" / 182mm
Mounting Depth: 3.6" / 92mm
Motor Diameter: 4.5" / 115mm