DeZZar
Senior Member
Last Activity: Today, 04:30 PM
Joined: 12-23-2019
Location: Melbourne, Australia
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I like to glue down a layer of 3mm on the sides where end grain MDF is showing and try to make the construction so that all the end grain exposed is on... -
That's the offsets we can put in the model if you intend to listen directly on tweeter axis (which you usually would). But to achieve a good model each... -
Generally for gathering your raw measurements to run a sim you would measure each driver from precisely on axis out to 90 degrees horizontally (every... -
In my sim I have the tweeter and midrange on the same axis as you said you took your measurement for each at the midpoint between them but I have your...
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Here's what I get with the last setup you posted (assuming we're working with the same files)
- You don't need that extra 4.7 on the tweeter
- The midrange
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Hmm...thats annoying. Mine still has File->Save As available.....I'll have to watch out for this patch!!
I guess you can still just paste... -
You can actually just 'paste' the snip directly into the text input area here when making a post. -
Well....I don't know what to make of this. Impedance looked better in post 214 above where that peak @ 150hz was mostly subdued. Now its back in full... -
There we go. You can't really bypass the crossover parts - if they are still connected to the woofer in any way - they'll have an affect.
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No, not at all Jim - the overall shape of the impedance curve will be the same - the differences will be fairly minor - a shift in the tuning point, change... -
Somethings off....This post here: https://techtalk.parts-express.com/f...01#post1492201 has...Leave a comment:
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Mate I have to be honest and say I have never seen a raw driver in cabinet impedance sweep look like that! Something's not right. This is without crossover... -
Not a chance....Leave a comment:
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Can we get the latest frd for woofer and port and can I confirm the inner diameter of the port? Run your impedance sweep again to see where the port has... -
I was of the understanding the woofer was on axis.....if the woofer was measured with the mic pointing at the mid point between tweeter and midrange it's... -
It can be 24db/oct electronically and still have a lesser of greater effect on the acoustic result. The measurement for the woofer, assuming its fine,... -
Based on the aligned sum (blue) of these measurements you're currently sitting at an f3 of around 46hz. I've assumed a 4" port diam...
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Your real system bass response is the combination of the port and woofer FRD. Can you attach the files and confirm the inner diameter of the port? Set...Leave a comment:
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I don't mean fill the cabinet up, I'm just referring to the material you would need to add to tame those box resonances - polyfill top and bottom etc... -
Tuning has to be done with final stuffing quantities in place
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