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Johnny Drama
09-06-2005, 04:48 PM
Did a search on several forums and didnt find much. Tell me if this looks correct.

TD=time delay
A=distance in feet from ear
1132ft/sec=speed of sound
1000=ms

TD=(A/1132)*1000

Left=2.2ft
1.94ms=(2.2/1132)1000

Right=4.6ft
4.06ms=(4.6/1132)1000

4.06-1.94=2.12 TD


Does this look correct? I found this formula on ECA, I am having problems finding other formulas on the topic.

iceteebone
09-06-2005, 04:51 PM
there used to be a forumula in my eclipse manual but i don't have it anymore. :crap: try seeing if you can get a pdf copy of the eclipse manual.

Johnny Drama
09-06-2005, 04:53 PM
there used to be a forumula in my eclipse manual but i don't have it anymore. :crap: try seeing if you can get a pdf copy of the eclipse manual.

I have the manual in my truck. Didnt see it in there. I will look harder tonight. Thanks for pointing that out ;)

iceteebone
09-06-2005, 04:54 PM
I have the manual in my truck. Didnt see it in there. I will look harder tonight. Thanks for pointing that out ;)


it was in my 8443 manual so if you have like an 8454 or 8053 it should be in there.

Johnny Drama
09-06-2005, 04:55 PM
it was in my 8443 manual so if you have like an 8454 or 8053 it should be in there.

I have the 8053, I will look harder tonight

johnecon2001
09-07-2005, 01:08 AM
well.. not to sure about time alignment in cars.. but in pro systems you delay the mids to the highs and then the front stage gets delayed again to the subs.

Trancer
09-07-2005, 01:12 AM
Thats why you get the Pioneer Premier 960. Has a microphone so it does itself. :D

nametaken
09-07-2005, 01:37 AM
I have the 8053, I will look harder tonight
oh its in there im sure, ihave the 8053 too. Havent messed with t/a yet.

Johnny Drama
09-07-2005, 05:54 PM
oh its in there im sure, ihave the 8053 too. Havent messed with t/a yet.

It was there...

You take this formula for eclipse

A=(B-C)/34

A=millisec
B=speaker furthest away in Centimeters
C=speaker you wish to adjust in CM
mesure to the headrest.

Johnny Drama
09-07-2005, 05:54 PM
Thats why you get the Pioneer Premier 960. Has a microphone so it does itself. :D

I will stick with eclipse ;) I like to do things myself.

noob with an RS
09-07-2005, 06:22 PM
can i use this formula to set the time alignment functions on my alpine 7995? do even i need to when running only front stage? and if i do, will it ruin imaging and staging sitting in the passenger seat?

Ignatowski
09-07-2005, 06:50 PM
time alignment=waste of time

Logikalliquid
09-07-2005, 09:33 PM
can i use this formula to set the time alignment functions on my alpine 7995? do even i need to when running only front stage? and if i do, will it ruin imaging and staging sitting in the passenger seat?
Need isnt the right word. Noone needs time alignment. It will make a difference in your front stage unless you sit in the middle of your car when driving. For your passenger, it will sound different. In my car, the music sounds like it is coming from my instrument cluster(or somewhere there about, I don't spend too much time in MY passenger seat.) when I sit in the passenger seat.


time alignment=waste of time

How's that?

Justintoxicated
09-08-2005, 10:33 PM
time alignment=waste of time


YEA RIGHT LMFAO,

It's a night and day difference on my Eclipse CD5444

With it set correctly it sounds as it should if I was in the middle of my truck with perfect imaging. It's one of those thigns that once you try it you won't go back. I just have the pre-settings on my HU though no way to manualy dial them in. Still works great!

Great thing is about using the pre-sets is I can switch from Front left to Front when a passenger gets in, and all the other T-alight settings stay the same (tweeter location speaker location etc)

HiAmplidude
09-09-2005, 12:42 AM
YEA RIGHT LMFAO,

It's a night and day difference on my Eclipse CD5444

With it set correctly it sounds as it should if I was in the middle of my truck with perfect imaging. It's one of those thigns that once you try it you won't go back. I just have the pre-settings on my HU though no way to manualy dial them in. Still works great!

Great thing is about using the pre-sets is I can switch from Front left to Front when a passenger gets in, and all the other T-alight settings stay the same (tweeter location speaker location etc)

Word

Alignment delay is [almost] mandatory for a critical listener with a vehicle installation.