TDA (Time-domain analysis) - Measurement Software - Review - Page 9 - Car Audio | DiyMobileAudio.com | Car Stereo Forum

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Old 02-14-2018   #201
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

This is with FIR off, right.

100hz is the sub/midbass x-over point. Door enclosure port is tuned to 80Hz.

Engine running adds some info at 40-50Hz, which i could also observe on REW measurements. Sweeps overpower the engine hum by 20-25dB. Will recheck again.
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Old 02-14-2018   #202
 
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

Why did you port the beymas, because you like to play sub-less sometimes?
That’s where I would start, plug their holes and see what happens.
They should sound great just in sealed (well they did for me).
Other than that IDK!

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Old 02-15-2018   #203
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

Always measure with the engine off.

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Old 02-15-2018   #204
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

Could it be group delay with the ported enclosure?
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Old 02-15-2018   #205
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

Ported enclosures always have smeared impulse response. You essentially have 2 point sources with them. The front of the cone and the port. The port will be delayed.


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Old 03-19-2018   #206
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

Here's my first tune with APL1 & TDA and I am very amazed with the results. Will try to fine tune my crossovers as there are some dips to take care of. any advice will be much appreciated.

Btw , I am using the MS8 curve for APL1.

My set up is 3 way active :

1. MB - 40hz/24db..600hz/24db
2. Mids - 800hz/24db--3khz/24db
3. Tweeters - 3khz/24db

SPFR with and without APL
Attached Images
File Type: jpg mono w APL.jpg (20.2 KB, 25 views)
File Type: jpg mono wo apl.jpg (21.1 KB, 25 views)

Last edited by cycfari; 03-19-2018 at 02:04 AM..
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Old 03-19-2018   #207
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

AFR with & without APL
Attached Images
File Type: jpg mono afr w APL.jpg (21.2 KB, 33 views)
File Type: jpg mono afr wo APL.jpg (20.4 KB, 32 views)
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Old 03-19-2018   #208
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Default Re: TDA (Time-domain analysis) - Measurement Software - Review

DFR with & without APL
Attached Images
File Type: jpg mono dfr w APL.jpg (19.6 KB, 32 views)
File Type: jpg mono dfr wo APL.jpg (20.9 KB, 30 views)
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