SB 8 inch woofer sounds great on its own. - Page 4 - diyAudio
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Old 19th January 2013, 05:05 PM   #31
xrk971 is offline xrk971  United States
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I was asking myself the same thing, if indeed that is a Pensil A12 in the picture. Smaller drivers have better imaging in general so not surprising.
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Old 19th January 2013, 07:22 PM   #32
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The pensil's sound better in the bass department but the crispness of the MA 7.3,even in a foam core box, really shines. I will work crossover experiments while woofers are breaking in.

John
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Old 19th January 2013, 09:21 PM   #33
mor2bz is offline mor2bz  United States
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again, what is a sb woofer? i pasted the numbers and came up with nothing but your post.
thanks
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Old 19th January 2013, 09:36 PM   #34
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SB Acoustics. You will it at Madisound.
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Old 19th January 2013, 11:58 PM   #35
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Is your enclosure sealed? Interested to know how you find the bass once they're in a ported or something enclosure.
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Old 20th January 2013, 05:22 PM   #36
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It was "sealed" but then I cut a couple of crude ports in the front of each. It was an improvement. Inserted paper towel rolls and another improvement! It's a great way to learn but the WAF is a new low.

John
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Old 20th January 2013, 06:01 PM   #37
xrk971 is offline xrk971  United States
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WAF can be high with foam core wall mount cornu horns. Hey at least they are not full BLH with front tractrix horns I read somewhere those were a sure sign of either celibacy or imminent divorce
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Old 20th January 2013, 10:46 PM   #38
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I did some sims of this and decided 55 litres would work well.

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Old 21st January 2013, 12:23 AM   #39
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Dave, was that ported or sealed? That's a fairly large speaker, so hopefully ported. Lots of bass??
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Old 21st January 2013, 12:33 AM   #40
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Ported, aligned for high aspect ratio vents. actually smaller than what i'd use sealed (60 litre). Sealed Q = 0.5 is over 100 litres.

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