Chris Roemer
Obsessed & Proud of It
Last Activity: Today, 06:03 PM
Joined: 09-28-2005
Location: Appleton/CL
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Hopefully your dims are all INternal (otherwise I don't get YOUR intended volume), and you can't count the area taken up by the slot structure as internal... -
WinISD from www.linearteam.org is all you really need.
IMO 1.375"id is a bit small for that driver. I'd go with at least 1.75"id....Leave a comment:
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1.0 cf seems a bit large ...
Have you run a box simulation?
Not being a true "sub" (only 5mm Xmax), this looks to hit Xmax...Leave a comment:
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Well, today I can see a couple dozen images (posts Home - #4), but I have to view with "Posts" clicked, instead of "Latest Activity"...Leave a comment:
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You're doubling the load seen by the filter(s).
To keep the same FR, you need to double-up any (coil) inductances and resistors, and halve all cap...Leave a comment:
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With no filter on the woofer, there is NO BSC (which is typically in the 100-1000Hz range).
YOUR filter drops the tweeter a few dB below the woofer's...Leave a comment:
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Those sims (w/ YOUR T/S parms) should be pretty accurate w/OUT that large series cap trying to roll off the bottom end.
WITH that cap, you will...Leave a comment:
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It's important to NOTE that these are NOT plots of your bottom end responses, they just show how that single 470uF series cap affects your driver's "in-box"...
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The bottom-end rolloff WILL be different "in-box". The resonant "hump" should get smaller and higher in freq. in a closed box, with...Leave a comment:
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This is the actual transfer fn of YOUR measured impedance on that driver (not sure if it's "free air", or "in box") acted on...Leave a comment:
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To expand on John's observation ...
The notch freq. in the woofers' filter is fairly narrow (in the 500-600Hz range), and NOT load dependent....Leave a comment:
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I'm pretty confident that your WT3 is NOT "hosed" (but somewhere, some setting isn't quite right yet). Your "leads" look VERY close,...Leave a comment:
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I can NOT see that .webp (or whatnot).Leave a comment:
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First order "formulas" (which seem to proliferate the web, and books) just do NOT work (sometimes, not at ALL).
A coil can't roll...Leave a comment:
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Your brace holes are fine ...
but, the easiest and most efficient way to brace a box is using 1" (or 3/4") dowels (or square stock)...Leave a comment:
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Your brace holes are fine.Leave a comment:
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T minus 2:15 (2:17pm EDT): 5 - - 4 - - 3 - - 2 - - 1 - - Artemis !
This link MIGHT take you to an animation of the Artemis 1 flight path (5+ wk mission) ...
https://modemworld.files.wordpress.com/2022/08... -
These are about 6 yrs old (if I can link them?) ...
(I THINK PE's link to the Peerless .PDF might only be 3 yrs old?)...Leave a comment:
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