** My Frequency Graph **

[Mr.SoloDolo 10+ year member]

Is there anything significant you can point out about my front stage based on these graphs?

2-way active front stage (ddaw6.5" Mids & ddat-28 tweeters)

Alpine PDX-F6

imprint done with (power IC on for 6x9 rear fill)

Click to read more...

 

[wenn_du_weinst 10+ year member]

looks like your tweeters are off axis

 

[trumpet 5,000+ posts]

lmao. Are you ******* kidding me?

 

[Mr.SoloDolo 10+ year member]

lmao. Are you ******* kidding me?

huh, care to clarify what you're talking about? lol

 

---------- Post added at 03:16 PM ---------- Previous post was at 03:15 PM ----------

 

looks like your tweeters are off axis

correct. they're in a stock location in the dash.... between 1-100 how much would my response improve if they were on axis.

 

[keep_hope_alive Premium Member]

On axis tweeters will give more detail in the upper range. I have tried many locations and aiming, on axis is my favorite when you control diffraction and have a good tweeter. Off axis can sometimes work if the tweeter is perfectly flush, I.e. you can see the domes from the seating position.

I think his comment was in regards to your before response. That identifies serious install issues in the form of constructive and destructive phase interference, and it looks periodic with a fundamental around 180Hz. You should try to start with a flatter curve - i.e. correct the speaker installation.

 

[winkychevelle 10+ year member]

also looks like your subs are lowpassed at 80hz an your mids highpassed at 100hz causing that dropped area onn the graph maybe raise the sub low pass a little are let the mid play a little lower

 

[Mr.SoloDolo 10+ year member]

On axis tweeters will give more detail in the upper range. I have tried many locations and aiming, on axis is my favorite when you control diffraction and have a good tweeter. Off axis can sometimes work if the tweeter is perfectly flush, I.e. you can see the domes from the seating position.
I think his comment was in regards to your before response. That identifies serious install issues in the form of constructive and destructive phase interference, and it looks periodic with a fundamental around 180Hz. You should try to start with a flatter curve - i.e. correct the speaker installation.

Not sure how to correct the install except move the tweeter to the A-Pillars (when i have money to pay someone to modify them).

Doors are properly deadened and sealed Already

Keephopealive we know youre a true audiophile with a incredibly high IQ but could you speak english please? lol

 

[keep_hope_alive Premium Member]

Is this without T/A to the mic location?

It is possible the response issues are time arrival based. I will typically RTA one side at a time, and even one driver at a time so I know what each is doing individually, then compare against one side only and all to determine what response issues are level based or phase based.

You want a smooth downward slope as frequencies increase when you have more than 1/3oct resolution - that way the levels are mostly flat with 1/1 octave resolution. I forget if Imprint is 1/6 or 1/12 octave.

More importantly, do YOU like it?

 

[Mr.SoloDolo 10+ year member]

also looks like your subs are lowpassed at 80hz an your mids highpassed at 100hz causing that dropped area onn the graph maybe raise the sub low pass a little are let the mid play a little lower

Headunit crossovers are:

Low (Subwoofer): 80hz / 18db slope

Mid (6x9s): 80hz / 18db slope

High (Midwoofers): 80hz / 12db slope

4 channel amp

Mids: Fullpass

Tweeters: Highpass @160hz (30-400hz is the selection)

 

[CAT MAN 5,000+ posts]

what hope said. and WDW knows sq dont doubt him lol...

 

[Mr.SoloDolo 10+ year member]

Is this without T/A to the mic location?
It is possible the response issues are time arrival based. I will typically RTA one side at a time, and even one driver at a time so I know what each is doing individually, then compare against one side only and all to determine what response issues are level based or phase based.

You want a smooth downward slope as frequencies increase when you have more than 1/3oct resolution - that way the levels are mostly flat with 1/1 octave resolution. I forget if Imprint is 1/6 or 1/12 octave.

More importantly, do YOU like it?

That's with time alignment to the mic location.

Pro: staging has greatly improved; brought everything from the floor up into the windshield.

System seems a bit passenger side heavy (if that's the correct example)

Con: Mids&Highs are a bit bright for my liking but that could be due to the tweeter placement.

 

[Mr.SoloDolo 10+ year member]

Should I change any of these settings?

 

Headunit crossovers are:

 

Low (Subwoofer): 80hz / 18db slope

Mid (6x9s): 80hz / 18db slope

High (Midwoofers): 80hz / 12db slope

 

4 channel amp

 

Mids: Fullpass

Tweeters: Highpass @160hz (30-400hz is the selection)

 

[Kastlez_ 10+ year member]

Nvm good luck

 

[dragonrage 10+ year member]

Check highpass of woofer (midbass, not subwoofer) and see if you can raise the tweeter level by 1-2dB in the crossover

 

[RAM_Designs 5,000+ posts]

It looks like you've boosted some frequencies with your EQ settings. Maybe I just don't have enough headroom with my setup, but it seems like any time I try to boost a spot that is lacking, it becomes noticeably harsher than before at very high volumes. Have you noticed this with your setup?