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Old 17th May 2005, 09:42 PM   #1
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Default Close to the Edge

Thanks to that amazing piece of software 'The Edge' I've made a simple Q&D OB. The Edge had the driver placed closed to one edge of the baffle, & although I was sceptical about this I tried it, and it worked amazingly well.
Now I want to know why I can't make the baffle like this?:
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Old 18th May 2005, 02:36 PM   #2
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Irregular polar response? Hard to eq. roll off?
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Old 18th May 2005, 04:55 PM   #3
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Mechanically unstable?
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Old 29th May 2005, 10:48 PM   #4
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Default before...

sounded more forward in lower mids than my Peerless 850488's (in 4L boxes), but about the same amount of low end:
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Old 29th May 2005, 10:54 PM   #5
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Default after...

Immediately noticed an 'enclosed' feeling to the sound, not as good as the flat baffle (need to do more listening). Ameliorated a little by turning the corner to the front. Tried swapping L & R sides - immediately noticed an improvement in low end; so my time wasn't wasted. So for asymmetrical baffles, the long side should be on the inside?
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Old 30th May 2005, 06:23 AM   #6
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What driver is that? 6x9?

dave
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Old 31st May 2005, 03:41 AM   #7
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Default Sony

Hi Dave,

Its a 165x65 cm unit out of an old Sony tape recorder,
sorry don't have the part # handy, but it sounds good & has a reasonably wide range; I'm planning to add piezo tweeters & 12" woofers when I sort out a good baffle shape (which will probably be an asymmetric pentagon); I'll Damar it as well.

Cheers,
Pete McK
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Old 31st May 2005, 06:37 AM   #8
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Default Re: Sony

Quote:
Originally posted by PeteMcK
Its a 165x65 cm unit out of an old Sony tape recorder,
cm? That is a monster... i just scored some alnico ones 203x100mm

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Old 31st May 2005, 07:18 AM   #9
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Default err..make that mm

sorry, much smaller.

Actually, I do have a pair of larger oval units of about the same vintage, Magnavox, a defunct Aussie brand I think. These are about 10" x 4", but don't have very good lows & squawky highs due to their whizzer. I've Damared the cones, and I'm going to try some car underseal on the accordion surround to see what change that makes (+ damp the whizzer or remove it).
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Old 31st May 2005, 11:13 PM   #10
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Default Re: err..make that mm

Quote:
Originally posted by PeteMcK
Magnavox, a defunct Aussie brand I think.
I alsways put Magnavox in the US... my RH84 has magnavox OPTs....

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