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Old 19th September 2002, 10:11 AM   #1
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Default crossover starting point for seas drivers

hi

just need your expert feedback on some designs for some seas drivers.

i just need a starting point for my crossover to get things working ..then ill try and find some time to get a mic and software. Linearx stuff looks good but is a bit out of my price range.

anyway

have these drivers

seas millenium tweeter T25CF002 low resonance too :-)
seas 6.5 inch magnesium mid w17e002

this mid has massive peaks at about 4.5k...how can these be tamed??


i was thinking about a 2k 24db x/o with impedence compensation

what type of impendence compensation do you also recommend??....parallel (resistor +cap in series with each other)

cheers jonathon
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Old 19th September 2002, 07:02 PM   #2
vuki is offline vuki  Croatia
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4.5kHz peak can be tamed with series LC combination parallel to driver- inductor should be 0.15mH and cap should be 4.7uF. As this combination is pretty effective you could even try 6dB/oct. with inductor at >2mH. Acoustic slope of such xover would be much higer than 6dB. Eventually you could need parallel RLC in series with that inductor to tame probable midrange hump.
I would go with 18dB/oct. with attenuation for the tweeter.
Although not a true recipe, I believe this is usefull.
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Old 19th September 2002, 07:58 PM   #3
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Default A tweeter filter

You might want to check out Joe D'Appolito's Thor. It is an MTM with the millinium tweeter, but a different midbass.

http://www.madisound.com/thor.html
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