flyin1340 Posted May 30, 2011 Report Share Posted May 30, 2011 In my search for repair or replacement woofers for my little A-40's I came across this site. I thought I would share the results of my search for a suitable replacement woofer for my little gems.They are very close to the original, a little tighter in the bottom due to the different surround. This could be considered an upgrade depending on your point of view.I hope this helpful.MW Audio MW-5060: 6.5" black polypropylene cone with rubber (santoprene) surround. http://w.mawebcenters.com/midwestspeaker/ecommerce/home-audio/woofers/6-5/mw-audio-mw-5060-6-5-woofer.htmlBoston Acoustic A40 series 1 replacement woofer: 40 watts / 40 - 5000 Hz / 1" voice coilThe original A40 series 1 woofers has been discontinued from Boston Acoustics. The 4 ohm woofer is a great replacement for the Boston Acoustics A40 series I woofer. All the specs and parameters were copied to ensure similar sound and exact physical fit. Same impedance (Re: 3.5 ohm), basket size and screw holes, so you do not have to modify the cabinet at all. The outside diameter is 6.57".This woofer features a polypropylene cone with santoprene rubber surround.Specifications and Small Signal Parameters Voice Coil Impedance: 4 ohm Rated Frequency Response: 40 - 5k Hz Sensitivity: 89 dB SPL (Average 500 - 2.5 kHz, 2.83V, 1 meter) Rated Power: 40 watts Program Power: 80 watts Magnet Weight: 340 gr (12 oz) Fo: 45 Hz Re: 3.5 ohm Qts: 0.51 Qms: 7.84 Qes: 0.54 Vas: 31 liters Xmax: 3.8 mm No: .49 % 6.57" outside diameter5.59" cutout diameter Link to comment Share on other sites More sharing options...
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