DS18 PRO-GM8.4B (Pair)

DS18 PRO-GM8.4B (Pair)

General specifications:

• Speaker type: Mid-range speaker
• Nominal diameter: 8 inches (203.2 mm)
• Nominal impedance: 4 ohms
• RMS power: 190 Watts
• Maximum power (MAX): 580 Watts
• Sensitivity (1w/1m): 95 dB (some sources indicate 96 dB)
• Frequency response: 80 Hz - 10 kHz (some sources indicate 90 Hz - 10 kHz)
• Recommended high-pass crossover frequency: 120 Hz

Materials and construction:

• Cone material: Unpressed paper
• Hanging material: Fabric (cloth)
• Basket material: Matte black steel
• Magnet material: High-strength ferrite
• Magnet weight: 30 oz
• Warheads: Made of red aluminum

Moving coil:

• Moving coil diameter: 1.5 inches (38.1 mm)
• Coil Former Material: Kapton
• Winding material: CCAW (copper-clad aluminum wire)

Thiele & Small parameters:

• Equivalent volume (Vas): 18.39 L
• Free air resonance (Fs): 92 Hz
• Mechanical factor (Qms): 11.5
• Electrical factor (Qes): 0.715
• Total factor (Qts): 0.673
• Mechanical mass (Mms): 10.3 g
• Mechanical conformity (Cms): 0.286 mm/N
• BL Factor: 5.2
• Moving coil inductance (Le): 0.427 mH
• Cone surface area (Sd): 213.82 cm²
• DC resistance (Re): 3.2 ohms

Dimensions and weight:

• Total diameter: 8.26 inches (210 mm)
• Total depth: 3.46 inches (88 mm)
• Mounting cutout (diameter): 7.2 inches (183 mm)
• Mounting depth: 3.22 inches (82 mm)
• Magnet diameter: 4.72 inches (120 mm)
• Unit weight: 5 lbs (approximately 2.2 kg)