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This is my first time crossover modeling, asking for more experienced opinion?
This is my first time crossover modeling, asking for more experienced opinion?
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Old 5th February 2021, 08:24 PM   #1
Luke H is offline Luke H  United Kingdom
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Default This is my first time crossover modeling, asking for more experienced opinion?

Will this 1K dip be an issue?
Tried to keep the whole thing within a +-5dB limit, is this a good rule of thumb?


Thanks, Luke.


Edit: I'm not looking for a flat response or anything just good listening quality, perhaps a slight smiley face EQ ideally.
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File Type: png Bye bye 1k.png (103.4 KB, 115 views)

Last edited by Luke H; 5th February 2021 at 11:14 PM.
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Old 5th February 2021, 08:41 PM   #2
PCSoldaat is offline PCSoldaat  Netherlands
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What if you invert polarity of the tweeter?
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Old 5th February 2021, 08:41 PM   #3
AllenB is offline AllenB  Australia
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This is my first time crossover modeling, asking for more experienced opinion?
Maybe find out why. Switch off system phase and turn it on for each driver.
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Old 5th February 2021, 08:59 PM   #4
Luke H is offline Luke H  United Kingdom
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Default Noob question:

Quote:
Originally Posted by PCSoldaat View Post
What if you invert polarity of the tweeter?

Thank you, this helped level out the response!

Is inverting the tweeter polarity a viable, permanent solution I.E. in the finished product?



Here is what it looks like inverted and tweeked:
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File Type: png Hello 1k my old freind.png (100.2 KB, 105 views)
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Old 5th February 2021, 10:25 PM   #5
Sonce is offline Sonce  Macedonia
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Better, but still not (very) good. Also, crossover frequency is dangerously low, the tweeter will distort and may burn up (assuming typical 1-inch tweeter).
Please post the driver measurement (also, state the drivers make and model), I will try to make a proper crossover.
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Old 5th February 2021, 11:09 PM   #6
Luke H is offline Luke H  United Kingdom
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Thank you, that's very helpful to know!

Woofer: https://www.parts-express.com/pedocs...ions-46148.pdf

Tweeter: https://www.parts-express.com/pedocs...ifications.pdf
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Old 5th February 2021, 11:20 PM   #7
Sonce is offline Sonce  Macedonia
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Hmm... You are using traced graphs from factory spec sheets. Not ideal, but workable.
Please send me (PM) the SPL.txt and Z.txt files for midbass and tweeter.
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Old 6th February 2021, 03:16 AM   #8
ernperkins is offline ernperkins  United States
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The best thing you could do is stop simulating and carefully read this:

Paul Carmody's DIY Speaker Pages - Simulated Measurements pt1

It explains the steps you are missing before simulating (the reason Sonce stated his post with "Hmm....)".

Last edited by ernperkins; 6th February 2021 at 03:18 AM. Reason: typo
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Old 7th February 2021, 01:44 AM   #9
Sonce is offline Sonce  Macedonia
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Here is my attempt on the crossover. Crossover frequency is rather low, at 1600 Hz, which may be problematic for the tweeter, regarding distortion. Measured distortion vs frequency would be nice for the peace of mind, but I could't find it.
DC160S frequency response is problematic: there is a peak at 1.5 kHz, followed by dip at 2 kHz, and another peak at 2.8 kHz - very difficult to linearize.
Dayton DC160S+DC28FT SPL.png

Dayton DC160S+DC28FT XO-schema-2.png
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Old 7th February 2021, 01:59 PM   #10
Luke H is offline Luke H  United Kingdom
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Thanks very much for your info, I'll read that link and maybe choose different drivers. Very helpful
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