Descriptions

About: DS18 8PRO400MR-4 8" 200W RMS Midrange Speaker - 4 Ohm (Each)

Get superior sound with DS18’s 8PRO400MR-4! With its 8" nominal diameter and 4 OHMS nominal impedance, the 8PRO400MR-4 delivers exceptional performance and clarity. The RMS power handling of 200W and MAX power handling of 400W, guarantee powerful sound reproduction.

One standout feature of DS18’s 8PRO400MR-4 is its high sensitivity rating of 104 dB, allowing it to effortlessly fill any space with rich, immersive sound. The frequency response range of 100Hz-12.5KHz ensures that every beat is reproduced accurately.

What sets the 8PRO400MR-4 apart is its demodulating rings made of copper. These rings play a crucial role in substantially reducing harmonic and intermodulation distortion associated with voice coil displacement. They also minimize the modulation of magnetic flux during the movement of the voice coil, ensuring a more linear variation of system inductances as input current varies. This results in a cleaner sound output, providing an enhanced audio experience.

The curvilinear cone shape enhances overall dispersion while maintaining optimal performance. The push speaker terminals make installation hassle-free, allowing for secure connections without compromising on sound quality.

DS18’s 8PRO400MR-4 has one of the most impressive motor configurations in our catalog. Its 1.5" voice coil diameter, made of Til material, ensures excellent heat dissipation for extended playtime without any compromise in performance. Experience audio excellence with DS18’s 8PRO400MR-4!

Product Highlights: 

• 8" Mid-Range
• MAX Power: 400 Watts
• RMS Power: 200 Watts
• Impedance: 4 Ohm
• Ferrite Magnet
• 104dB

Specifications: 

• Nominal Diameter: 8" (203 mm)
• Nominal Impedance: 4 Ohms
• RMS Power Handling: 200W
• MAX Power Handling: 400W
• Sensitivity (1w/1m): 104dB
• Frequency Response: 100Hz-12.5KHz
• Recommended HI Pass Crossover: 160Hz
• Sold in Pair or Single: Single
• Grill Included: No
• Interleaved Sandwich Voice coil (ISV): No
• Demodulating Rings: Copper Ring
• Improved Heat Dissipation: No
• Cone Shape: Curvilinear
• Speaker Terminals: Push 8ga

Motor:

• Voice Coil Diameter: 1.5" (38.6 mm)
• Voice Coil Former Material: Til
• Winding Material: CCAW
• Cone Material: Paper
• Dust Cap Material: Paper
• Bullet Material: N/A
• Bullet Color/Finish: N/A
• Surround Material: Cloth
• Spider Diameter: 4" / 102mm
• Leads Connection Type: Spider Crossed
• Basket Material: Steel
• Basket Color/Finish: Black
• Magnet Material: Ferrite
• Magnet Weight: 40 Oz
• Displacement Volume: 0.56L / 0.02ft3

Thiele & Small Parameters:

• Equivalent Volume (Vas): 37.3L / 1.31ft3
• Excursion (one way) (Xmax): 0.75mm
• Free Air Resonance (Fs): 70Hz
• Mechanical Factor (Qm)s: 4.31
• Electrical Factor (Qes): 0.34
• Total Factor (Qts): 0.32
• Mechanical Mass (Mms): 12.72g
• Mechanical Compliance (Cms): 0.43mm/N
• BL Factor (BL): 7.44
• Voice Coil Inductance (Le): 0.03mH
• Cone Area (Sd): 246.06cm2
• DC Resistance (Re): 3.5ohms
• Mechanical Mass w/o air (Mmd): 12.5g

Measurements:

• Overall Diameter: 8.19" (208 mm)
• Overall Depth: 3.72" (94.6 mm)
• Front Mount Baffle Cutout: 7.36" (187 mm)
• Mounting Depth: 3.48" (88.5 mm)
• Motor Diameter: 5.1" (130 mm)