P.AUDIO BM8CXA DIY Midtop Plans |
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MrScy
Registered User Joined: 23 June 2017 Location: South Africa Status: Offline Points: 34 |
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Posted: 02 October 2018 at 10:40am |
Hello, Just got 2 P.AUDIO BM8CXA coax drivers and I intend to use for light duty mid top jobs. I am looking for efficient DIY designs, horn loaded, parareflex etc. Looking for 130/200 to 18/20Hkz response I wont mind a MT18 if there's(MT112 optimized for 8" coax) Please assist with plans and simulations. Specs: Low Frequency Specifications Diameter : 8" / 203.2mm Impedance : 8 ohms RMS Power : 200 watts Program Power : 400 watts Frequency Range : 80Hz - 18kHz Sensitivity : 95dB SPL Voice Coil : 2.5" / 63.5mm Magnet Weight : 60 oz. =============================== High Frequency Specifications Rated Impedance: 8 ohms RMS Power Rating: 40 watts Program Power Rating: 80 watts Frequency Range: 1.5kHz - 18kHz Sensitivity (1W/1m): 105dB SPL Voice Coil Diameter: 1.35" / 34.3mm Magnet Weight: 2.2 lbs. =============================== Thiele-Small Parameters Resonant Frequency (Fs): 53 Hz Impedance (Re): 6.5 ohms Mechanical Q (Qms): 4.5 Electrical Factor(Qes): .22 Total Q (Qts): .21 Comp. Equivelant Vol. (Vas): .93 ft3 / 26.45 Liters Voice Coil Overhang (Xmax): 3 mm Surface Area of Cone (Sd): .021 m2 BL Factor (BL): 14.3 T-M |
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montek.co.za
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Mircea Bartic
Old Croc Joined: 18 February 2005 Location: Romania Status: Offline Points: 2582 |
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I'm afraid you will only get a bassreflex or back loaded horn option. You can't put a coaxial in a front horn because you will loose the driver's output (horn acts as a lowpass)
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general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research Ex Nexus_3 |
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PavelP
Registered User Joined: 25 March 2011 Location: Russia Status: Offline Points: 159 |
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Mircea Bartic, tell it to Tom Danley )
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Volnovod audio https://vk.com/kb_volnovod
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DMorison
Old Croc Joined: 14 March 2007 Location: Aberdeen Status: Offline Points: 1649 |
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To be fair, by avoiding having a compression chamber in front of the cone, Danley avoid that risk pretty easily as that's where the low pass characteristic comes from.
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