{"product_id":"m6-master-series-6-7-mid-woofer","title":"M6 – Master Series 6.7″ mid-woofer","description":"\u003ch1\u003eOverview\u003c\/h1\u003e\n\u003cp\u003eThe Master Series M6 mid-woofer is a high stroke, low distortion high output mid-woofer.  This speaker features high stroke, low distortion, wide bandwidth, and high power handling.  It features a 51mm \/ 2” voice coil diameter for high power handling and motor force.\u003c\/p\u003e\n\u003cp\u003eThe M6 mid-woofer features a split-gap design which provides ±8.7mm of linear excursion, allowing for displacement equal to many 8 inch woofers. The high linear stroke features a flat BL curve for exceptional dynamics and impact.\u003c\/p\u003e\n\u003cp\u003eThe M6 has multiple copper shorting rings within its magnetic structure. These features result in exceptionally low inductance at all operational frequencies and across stroke.  This further extends bandwidth as well as reduces motional intermodulation distortion for a much more open and natural midrange.\u003c\/p\u003e\n\u003cp\u003eThe M6 uses a thermo-fused woven, strand-oriented-chain hardened polyolefin cone.  This cone features very high strength due to the strand orientation of the polyolefin monomer chains, and exceptional internal damping from the polyolefin itself.  The thermal fusing ensures an air-tight surface without degrading the woven feature and strand orientation.  The result is a cone with over 600 MPa of tensile strength, vastly superior internal damping as compared to carbon and glass fibers, and a density of just 0.9 g\/cm\u003csup\u003e3\u003c\/sup\u003e , approximately 40% that of carbon fiber.\u003c\/p\u003e\n\u003cp\u003eThe M6 basket is also extremely open and holds the motor structure at the rear, so that basket-based reflections back up to the cone are minimized.  Use of a shallow split gap motor structure and custom tooled basket, surround, cone, and spider result in a very shallow mounting depth so the mid-woofer can fit into shallow locations, enabling creative positioning for best acoustical performance.\u003c\/p\u003e\n\u003ch2\u003eCrossover Frequency and power handling\u003c\/h2\u003e\n\u003cp\u003eThe M6 mid-woofer is a wide bandwidth, high stroke speaker.  A low pass crossover should be set no higher than 3500 Hz.  The actual value should be selected based upon the paired tweeter, midrange, or full-range speaker.\u003c\/p\u003e\n\u003cp\u003eThe bottom end is robust, and can often forego a subsonic filter.  The following table summarizes general guidelines about a subsonic filter.  As noted above, this is not a hard-and-fast set of limits, and the final installation needs to be considered when setting actual crossover values and gains.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"60\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"138\"\u003e\u003cb\u003e6dB\/Oct\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"144\"\u003e\u003cb\u003e12dB\/Oct\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"165\"\u003e\u003cb\u003e18dB\/Oct\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"117\"\u003e\u003cb\u003e24dB\/Oct\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"60\"\u003e50W\u003c\/td\u003e\n\u003ctd width=\"138\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"144\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"165\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"117\"\u003eNot necessary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"60\"\u003e100W\u003c\/td\u003e\n\u003ctd width=\"138\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"144\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"165\"\u003eNot necessary\u003c\/td\u003e\n\u003ctd width=\"117\"\u003eNot necessary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"60\"\u003e200W\u003c\/td\u003e\n\u003ctd width=\"138\"\u003e100 Hz\u003c\/td\u003e\n\u003ctd width=\"144\"\u003e80 Hz\u003c\/td\u003e\n\u003ctd width=\"165\"\u003e70 Hz\u003c\/td\u003e\n\u003ctd width=\"117\"\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"60\"\u003e400W\u003c\/td\u003e\n\u003ctd width=\"138\"\u003e170 Hz\u003c\/td\u003e\n\u003ctd width=\"144\"\u003e135 Hz\u003c\/td\u003e\n\u003ctd width=\"165\"\u003e110 Hz\u003c\/td\u003e\n\u003ctd width=\"117\"\u003e100 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003cp\u003eNote that with lower power applications, these frequencies may be adjusted down; with higher power, you may need to adjust the frequencies up.  Again, the actual implementation of the entire system needs to be considered when installing these products.  A small sealed chamber behind the midrange can increase mechanical power handling, but may negatively impact thermal power handling.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-large wp-image-5201\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/M6-dimensions-945x1024.jpg\" alt=\"\" width=\"900\" height=\"975\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-large wp-image-5202\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/M6-frequency-respose-from-Klippel-1024x497.jpg\" alt=\"\" width=\"900\" height=\"437\"\u003e\u003c\/p\u003e\n\u003ch2\u003eThiele Small Parameters\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e4 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eNominal SPL\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e86 dB @ 1W, 1m (89 dB @ 2.83Vrms, 1m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eResonant Frequency (Fs)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e65 Hz ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eTotal System Q (Qts)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e0.75±15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eEquivalent Volume Air (Vas)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e8 liters  ±15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eMotor Force (BL)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e5.8 N\/A  ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eInductance (Le)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e0.110mH±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eDC Resistance (DCR)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e3.8 Ohms  ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eMoving Mass (Mms)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e21 grams  ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eElectrical Q (Qes)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e0.95±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eMechanical Q (Qms)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e3.5±15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eDiaphragm Surface Area (Sd)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e133 cm²±2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"312\"\u003eLinear Excursion (Xmax)\u003c\/td\u003e\n\u003ctd width=\"312\"\u003e8.7mm one way  ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cpre\u003e\u003c\/pre\u003e","brand":"Audio Dynamics","offers":[{"title":"Default Title","offer_id":52549562204391,"sku":"M6","price":1199.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.mediocrecustoms.com\/products\/m6-master-series-6-7-mid-woofer","provider":"Mediocre Customs","version":"1.0","type":"link"}