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2nd October 2007, 10:06 PM
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#1 |
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diyAudio Member
Join Date: Dec 2004
Location: Alps
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15" Beyma SM-115N
http://profesional.beyma.com/ENGLISH...php?pdf=SM-115 N.pdf
Was considering using this driver up to around 900 Hz for a Summa like speaker. The only thing that bothers me is a problem around 350 Hz. One can see it on FR curve as a dip, on distorsion curve as a rise of H3 (?). It also seems to show on impedance curve as a very small bump (zoom PDF doc at least 300% to see it). What do you think can be the origin of the problem ? Do you think it's a no go beyond 300 Hz ? Thanks in advance |
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3rd October 2007, 07:22 AM
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#3 | |
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diyAudio Member
Join Date: Dec 2004
Location: Alps
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Quote:
Beyma's SM-115N has interesting T/S parameters : low FS (for a pro driver) + not too low QTs + big VAS so I can design a ported box using an alignment lower than 5.7, reasonnably low Le, well behaved in upper frequencies, and high efficiency. |
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