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bought these in may of 2014 going a new route. PRV-Audio 8MR500-NDY-4 8 inch. Single Midrange Speaker, Neo, 500 Watts Details: The PRV Audio Pro Audio Loudspeaker, 8MR500-NDY-4 midrange woofer offers outstanding durability and a smooth midrange response through 8.5kHz. This woofer is perfect for home Hi-Fi installs, including bookshelf, satellite, surround sound speakers and even the home studio monitors. It is a great option for three way cabinets requiring additional midrange support. The high end neodymium magnet assembly was chosen to increase sensitivity and power handling. This neodymium is attached to a sturdy reinforced cast aluminum frame to ensure a solid support structure for long lasting play in most any environment. Its light weight of only 1.05 lbs helps keep your enclosures light and is a great use for use for car doors and installers looking for high SPL midrange and upper midrange responses Specifications: Power handling: 250 watts RMS/500 watts peak Voice Coil Size: 1.5" Impedance: 4 ohms Frequency response: 100-8,500 Hz SPL: 98 dB 1W/1m Qms: 15.36 Qes: .902 Qts: .852 Xmax: 2 mm Dimensions: Outside diameter: 8.1" (206.3mm), Cutout diameter: 7.3" (185.6mm), Depth: 3.1" (80.3mm) 2.33lbs asking $125
• Neodymium radial slug motors for extreme speaker control and sensitivity • Full copper pole-piece sleeve for low distortion and inductance • Durable cast aluminum frame A bumped backplate, vented pole piece, vented magnet assembly, Kapton® former, and treated-cloth surround allow for high power handling, while protecting this driver from extreme transient power peaks. Available now at SSA Store: http://store.soundsolutionsaudio.com/products/prv-audio-5mr450-ndy-5-inch-8-ohm-mid-bass.html http://store.soundsolutionsaudio.com/products/prv-audio-5mr450-ndy-4-5-inch-4-ohm-mid-bass.html http://store.soundsolutionsaudio.com/products/prv-audio-6mr500-ndy-4-6-inch-4-ohm-mid-bass.html http://store.soundsolutionsaudio.com/products/prv-audio-6mr500-ndy-6-inch-8-ohm-mid-bass.html http://store.soundsolutionsaudio.com/products/prv-audio-8mr600-ndy-8-inch-8-ohm-mid-bass.html
I've been reading the Loudspeaker Design Cookbook and found the effects of lobing due to driver placement on the baffle, but am still left wondering two things. Use the picture below as a reference to how the placement would differ. Assume same port length and volume for each. #1: The port ends in a different location inside the box, does this have different loading effects on the sub? From appearance, it would seem that the air flow in each would be somewhat different and affect the subwoofer? #2: What happens to the subwoofer and response as you move it closer or farther away from the port? Is it best to have it centered or off to a particular side?