About: PRV Audio 8MR400B-4 8" Midrange Bullet Slim Loudspeaker - 4 Ohm (Each) 

The MR SLIM series was designed as PRO Audio On Wheels solution for shallow doors, featuring an Aluminum Phase Plug (Bullet). This mid is built like a professional midrange loudspeaker, but it has been designed for use in the mobile audio market, as we called it Pro Audio On Wheels®!

The “bullet” phase plug is made from pure aluminum acting as a radiator cooling system for the voice coil and machined to perfection for even sound dissipation. Beyond good looks, this cone is extremely light, providing excellent damping to keep an incredibly natural yet accurate sound.

Also featuring a cloth M-roll surround helping resonance to be kept under control making for an easy transition to a super tweeter.

The suspension design of this mid range features the single layer spider – which connects to the coil former with premium stitched lead wires, all being driven by a copper-clad aluminum wire voice coil providing high efficiency and excellent power handling.

You can expect outstanding sound stage quality and realistic sound reproduction for a great value.

 Built for compact spaces and able to handle 400 watts of continuous power. Its slim design makes this the perfect car audio door speaker, allowing it to be utilized in endless ways.

 Loud and clear vocals all within 2.68" of mounting depth without sacrifice quality and performance.

Highlights:

• Slim Design – Perfect for door stock location
• Sound Quality without Cutting up interior Panels
• Endurance at Loudest Volumes
• Vented Air pole piece for heat dissipation
• Center phase plug for even sound distribution
• 4 Ohms Impedance
• Sold individually 

Specifications: 

• Nominal Diameter: 8″ (152 mm)
• Nominal impedance: 4 Ohms
• Rated AES Power Handling (RMS): 200 Watts
• Program Power: 400 Watts
• Sensitivity 2.83V at 1m: 93.5 dB
• Recommended Hi Pass X-Over: 125 Hz (12 dB/Octave)
• Frequency Response at -10dB: 95 – 7,500 Hz
• Voice Coil Diameter: 1.5″ (38 mm)
• Voice Coil Wire: CCAW
• Voice Coil Winding Depth: 9.5 mm
• Former Material: Kapton
• Magnetic Gap Depth: 6.0 mm
• Frame Material: Stamped Steel

Thiele-Small Parameters: 

• Equivalent Volume (Vas): 15.7 l
• Xmax: 3.25 mm
• Free Air Resonance (Fs): 92.9 Hz
• Mechanical Factor (Qms): 25.53
• Electrical Factor (Qes): 0.76
• Total Factor (Qts): 0.74
• Cone Area (Sd): 230 cm²
• Mechanical Mass (Mms): 13.78 g
• Bl Factor (Bl): 6.34 Tm
• Dc Resistance (Re): 3.8 Ohms
• Inductance (Le): 0.167 mH at 1 kHz
• Mechanical Mass Without Air (Mmd): 11.81 g
• Mechanical Compliance (Cms): 0.213 mm/N

Mounting and Shipping Information: 

• Overall Diameter: 8.23″ (209 mm)
• Front Mount Baffle Cutout: 7.13″ (181 mm)
• Mounting Depth: 2.68″ (68 mm)
• Overall Depth: 2.95″ (75 mm)
• Weight: 5.10 Lbs (2.30 kg)