About: DS18 PRO-GM6.4B 6.5" Midrange Speaker 140 Watts RMS -  4 Ohms (Each) 

With the DS18 PRO-GM6.4B, you'll experience the pinnacle of faithful sound reproduction. Its exceptional performance in the midrange region, ensures that every nuance and subtlety of your favorite tracks is faithfully conveyed. With an RMS power of 140W and a maximum power of 480W, these speakers pack a punch that will leave you breathless. The frequency response of 85Hz – 6KHz ensures that no detail is lost, capturing every note with astonishing accuracy.

Crafted with high durability parts, including a robust ferrite magnet, a pressed paper cone, and CCA voice coils, this mid-range is built to deliver maximum volume without compromising audio excellence. The voice coil wire, made of Kapton, ensures enhanced performance and durability. With an impedance of 8 Ohms, a sensitivity rating of 95dB, 1.5" voice coil size, a magnet weight of 23 oz., a mounting depth of 2.5" (69mm), and cut-out dimensions of 5.70" (145mm), these speakers are engineered to fit seamlessly into your vehicle.

The solid cone design of the PRO-GM6.4B ensures that it shines as a pure midrange speaker, providing a focused and precise soundstage. For the ultimate audio experience, pair these exceptional speakers with a complementary tweeter, and prepare to be transported to a world where sound comes alive with unparalleled clarity and depth. The "B" in PRO-GM6.4B stands for "Bullet," and it represents the heart of this extraordinary speaker. Equipped with a resonator featuring a distinctive red bullet design, the PRO-GM6.4B extends the range of frequencies, allowing you to hear every nuance and detail in your music. From deep, thundering bass to crystal-clear highs, this speaker does it all. Whether you're cruising down the highway or parked at a car meet, the PRO-GM6.4B will captivate your senses, immersing you in crystal clear notes and deep heavy beats.

Product Highlights: 

• 6.5" Mid-Range
• MAX Power: 480 Watts
• RMS Power: 140 Watts
• Impedance: 4-Ohm
• Ferrite Magnet
• With Bullet

Specifications:

• Nominal Diameter: 6.5" / 165.1mm
• Nominal Impedance: 4 Ohm
• RMS Power Handling: 140W
• MAX Power Handling: 480W
• Sensitivity (1w/1m): 93dB
• Frequency Response: 100Hz-6.3KHz
• Recommended HI Pass Crossover: 120Hz
• Pair or Single: Single
• Grill Included: No

Motor: 

• Voice Coil Diameter: 1.5" / 38.1mm
• Voice Coil Former Material: Kapton
• Winding Material: CCAW
• Cone Material: Paper
• Dust Cap Material: N/A
• Bullet Material / Color: Red Aluminum
• Surround Material: Cloth
• Basket Material: Steel
• Basket Color/Finish: Matte Black
• Magnet Material: Ferrite
• Magnet Weight: 23 oz

Thiele & Small Parameters: 

• Equivalent Volume (Vas): 4.9L / 0.173ft3
• Excursion (one way) (Xmax): N/A
• Free Air Resonance (Fs): 113HZ
• Mechanical Factor (Qms): 11.955
• Electrical Factor (Qes): 0.705
• Total Factor (Qts): 0.666
• Mechanical Mass (Mms): 9.862g
• Mechanical Compliance (Cms): 0.198mm/N
• BL Factor (BL): 5.75
• Voice Coil Inductance (Le): 0.453mH
• Cone Area (Sd): 132.73cm2
• DC Resistance (Re): 3.3 ohm

Measurement: 

• Overall Diameter: 6.57" / 167mm
• Overall Depth: 2.7" / 69mm
• Front Mount Baffle Cutout: 5.7" / 145 mm
• Mounting Depth: 2.5" / 64mm
• Motor Diameter: 4.33" / 110mm
• Gross Single Unit Weight (lb): 4
• Dimensions (W x L x H): 7.3" x 7.3" x 3.25"