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Multi-Way Conventional loudspeakers with crossovers

Working the crossover for better impedance
Working the crossover for better impedance
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Old 26th March 2020, 04:04 AM   #21
AllenB is offline AllenB  Australia
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Working the crossover for better impedance
We simply want some plots and a plan for a useable impedance and response.

@Kustomize.. If you link to plots of the drivers, we might be able to turn them into frd files for you.
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Old 26th March 2020, 08:51 AM   #22
Kustomize123 is offline Kustomize123
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Quote:
Originally Posted by AllenB View Post
We simply want some plots and a plan for a useable impedance and response.

@Kustomize.. If you link to plots of the drivers, we might be able to turn them into frd files for you.
Thankyou all!

@AllenB Here!
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File Type: png real.PNG (204.1 KB, 69 views)
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Old 26th March 2020, 08:52 AM   #23
Kustomize123 is offline Kustomize123
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Originally Posted by Kustomize123 View Post
Thankyou so much for that Douglas!

So I am attaching a file for the tweeter, which is the Vifa DQ25. This file was found in this thread in partsexpress techtalk.

Seas CA18RNX & Vifa DQ25SC16 FRD Files... -

Techtalk Speaker Building, Audio, Video Discussion Forum



And for the Zaph files, I retraced the graphs! I hope I did it right!
Sorry for double posting, the tweeter file in this is supposedly accurate, its not made by me!

I messed up with the Zaph file, but I have attached the FR response and impedance from Zaph's own website under the ZA5 Driver Data.
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Old 26th March 2020, 09:19 AM   #24
AllenB is offline AllenB  Australia
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Working the crossover for better impedance
Sorry Kustomize, that doesn't look like the plot of a 7" driver?

How does that one look? - and this tweeter? Vifa DQ25SC16-04, 1" Titanium Dome Tweeter

Do you need one or both?
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File Type: png Screenshot from 2020-03-26 20-17-38.png (163.1 KB, 46 views)
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Old 26th March 2020, 10:10 AM   #25
Kustomize123 is offline Kustomize123
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Quote:
Originally Posted by AllenB View Post
Sorry Kustomize, that doesn't look like the plot of a 7" driver?

How does that one look? - and this tweeter? Vifa DQ25SC16-04, 1" Titanium Dome Tweeter

Do you need one or both?
Sorry for causing confusion Allen!

The driver we are looking for the FRD and ZMA files of is the Zaph ZA5.
http://zaphaudio.com/ZA14W08/ZA14W08-datasheet.pdf

The image I posted is from this link above.

That post I shared, with the SEAS driver, shares the FRD file for the VIFA DQ25 tweeter that you linked above, yes that's the tweeter!

We don't need the SEAS files as I don't have something so nice :P

Sorry!
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Old 26th March 2020, 10:30 AM   #26
AllenB is offline AllenB  Australia
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Working the crossover for better impedance
1. Rename - remove the .txt (it's only there so I could upload the files)
2. Look at the curves to make sure they are right.
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File Type: txt zaph.frd.txt (14.4 KB, 6 views)
File Type: txt zaph.zma.txt (13.7 KB, 4 views)
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Old 26th March 2020, 10:37 AM   #27
Kustomize123 is offline Kustomize123
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Quote:
Originally Posted by AllenB View Post
1. Rename - remove the .txt (it's only there so I could upload the files)
2. Look at the curves to make sure they are right.
Wow that was quick!

Thankyou so much!

Will check through!

EDIT : The graphs seem to be quite accurate!!! Thankyou Allen!

EDIT 2 : I cross checked the Vifa DQ25 Tweeter files from the thread I linked earlier with the SEAS driver, it seems like the FRD file might be a little off than the actual response that I see on madisound for the tweeter.
Vifa DQ25SC16-04, 1" Titanium Dome Tweeter

And the FRD/ZMA file of the Vifa DQ25 can be found at post number 3
Seas CA18RNX & Vifa DQ25SC16 FRD Files... -

Techtalk Speaker Building, Audio, Video Discussion Forum

Last edited by Kustomize123; 26th March 2020 at 10:58 AM.
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Old 26th March 2020, 11:12 AM   #28
Douglas Blake is offline Douglas Blake  Canada
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Thank you Allen, these new files make more sense.

Here is the DXO with the new files integrated and a thumbnail from XSim.
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File Type: jpg ZA5.3t-crossover.jpg (52.0 KB, 78 views)
File Type: jpg ZA5.3t-Original-crossover.jpg (372.2 KB, 38 views)
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File Type: dxo ZA5T.dxo (45.6 KB, 3 views)
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Old 26th March 2020, 11:30 AM   #29
Douglas Blake is offline Douglas Blake  Canada
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Here are the frequency and impedance plots for the drivers, per the newest files...

S1 (Green) is for the woofer.
S3 (Red) is for the tweeter.

If these look reasonable we can push on...
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File Type: jpg FR drivers only.jpg (48.9 KB, 41 views)
File Type: jpg IMP drivers only.jpg (52.8 KB, 15 views)
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Old 26th March 2020, 11:35 AM   #30
Kustomize123 is offline Kustomize123
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Thankyou douglas! That does look great to me!

Now if Allen could verify that the files for the DQ25 are indeed accurate, I think that would help us make sure we are on the right path!
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