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Multi-Way Conventional loudspeakers with crossovers

3 Way Crossover - a first attempt
3 Way Crossover - a first attempt
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Old 13th February 2018, 01:31 AM   #1
cal16v is offline cal16v  Australia
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Join Date: Jan 2018
Default 3 Way Crossover - a first attempt

Hi,

After playing a while in xsim I came up with this;

This is my first attempt at any sort of crossover so I'd appreciate all comments on what I've knackered and what I have failed to consider

Below are the files for the TMW units...

Thanks,
Attached Images
File Type: jpg 1st attempt.jpg (202.6 KB, 292 views)
File Type: jpg xo.jpg (73.9 KB, 289 views)
Attached Files
File Type: zip ND25TA-4_data.zip (74.8 KB, 13 views)
File Type: zip RS100P-4_data.zip (75.3 KB, 7 views)
File Type: zip ES180TiA-8_data.zip (72.9 KB, 11 views)
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Old 13th February 2018, 05:18 AM   #2
Mrcloc is offline Mrcloc  South Africa
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Hi. What does your phase response look like?
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Old 13th February 2018, 05:24 AM   #3
cal16v is offline cal16v  Australia
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Quote:
Originally Posted by Mrcloc View Post
Hi. What does your phase response look like?
No idea TBH...

If you're familiar with xsim tell me how to find it and I'll post.

cheers
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Old 13th February 2018, 05:31 AM   #4
Mrcloc is offline Mrcloc  South Africa
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Sorry, it's there on your FR plot...

Is this in an enclosure of sorts? What I'm actually asking about is the phase response for each driver. I'm not familiar with xsim, but if your phase response is doing weird things, your off-axis performance will not be good, and this causes a lot of quality issues. I'm sure there's a button there to show individual response for phase? Aligning phase in the crossover is very important, as far as I understand.
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Old 13th February 2018, 05:36 AM   #5
cal16v is offline cal16v  Australia
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Ok hope this is what you want to see...
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File Type: jpg 123.jpg (260.6 KB, 265 views)
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Old 13th February 2018, 05:59 AM   #6
Mrcloc is offline Mrcloc  South Africa
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Excellent. Now I think it's best for the experts to provide their wisdom.

The only thing I can say for sure is that your tweeter might distort. Try to get rid of that bump from about 1.3kHz to 2.2kHz. You could also try to add a second series capacitor after the inductor, before the L-pad, to get a higher order filter so that you're further down at 1.5kHz.

Otherwise, it's looking nice!
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Old 13th February 2018, 06:11 AM   #7
cal16v is offline cal16v  Australia
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Quote:
Originally Posted by Mrcloc View Post
Excellent. ... Try to get rid of that bump from about 1.3kHz to 2.2kHz...
Wow! I wasn't expecting that Thank you so much!

I played with the values a little more after posting earlier. I found this was the best I could come up with...

By the way, this is with a different tweeter... a Dayton ND28F-6.
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File Type: jpg Best.jpg (228.0 KB, 254 views)
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Old 13th February 2018, 06:16 AM   #8
Mrcloc is offline Mrcloc  South Africa
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I think let the guys who know crossovers better than me give their advice. I'm no expert - just a small amount of experience. The phase of each driver is important information.
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Old 13th February 2018, 07:23 AM   #9
cal16v is offline cal16v  Australia
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Quote:
Originally Posted by Mrcloc View Post
I think let the guys who know crossovers better than me give their advice. I'm no expert - just a small amount of experience. The phase of each driver is important information.
HaHa... you're no expert,

Many thanks Mrcloc
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Old 13th February 2018, 09:43 AM   #10
AllenB is offline AllenB  Australia
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It is difficult to say whether this is good or not but it appears to be a good start. You have only information from single driver measurements so there may be issues that can be partially compensated for, and these might be possible after listening and deciding how much they can and can't be compensated. The question of whether phase should be matched is also beyond this level of simulation. Then there is the question of whether the response should be flat in your room.
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