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Old 22nd June 2009, 23:50   #451
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Also i feel that this method may not be always correct considering the speed of sound is 340 in free air but in a car, the sound has to travel with objections in between.
Legs for that matter.
LBM paaji, any comments on this?
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Old 23rd June 2009, 08:12   #452
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Also, say in a sedan.. how the distance from sub is calculated, the shortest distance between ear and the sub assuming that there are no rear seats/obstructions? how?
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Old 23rd June 2009, 09:27   #453
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usually yes panky ji. However this obstruction is what i am doubtful about. Should i calculate it without considering the obstruction. Or just by listening.?
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Old 23rd June 2009, 10:00   #454
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i tried doing TA of sub.. there was not much major difference

but on speakers it was noticeable difference even after changing location by 5 inches so i think will use inch tape to measure distance from speakers to my ears !! But again one more confusion the distance of mid bass or tweeters to be measured ?

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Old 23rd June 2009, 10:11   #455
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I asked the same question to LBM and his answer was from midbass!
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Old 23rd June 2009, 11:54   #456
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yes it's the mid bass.
Having time alignment in a passive setup is as good as not having one. It's an active setup where the time alignment can be put to best use.
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Old 23rd June 2009, 11:58   #457
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i surely need to catch abhibh on this now.. he was the one encourging me for 8850 and i missed 6539 !! :(


i spent extra for time alignemt and if that thing doesn't sound perfect some one will get killed by me ( kidding )

can my setup be converted to active without adding DSP and all ? am ready to do this but it should make world of diffference in sound !!

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Old 23rd June 2009, 12:45   #458
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can my setup be converted to active without adding DSP and all ? am ready to do this but it should make world of diffference in sound !!
This shows you have lots of money to spend. Keep the setup like this for a while Let the speakers burn-in. Wait for a month and so after that decide.

But I know you will not wait and go ahead.
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Old 23rd June 2009, 13:09   #459
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this time i have to wait .. no M to go further

But can 8850 work as active head like P80 rs?
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Old 23rd June 2009, 13:16   #460
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i tried doing TA of sub.. there was not much major difference
I am surprised because TA, if done properly, should have created improved sound stage. But it depends how far is the sub in your present setup. What formula you are using for doing TA?

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But again one more confusion the distance of mid bass or tweeters to be measured ?
I don't know if your HU has ability to store presets. If it has, my suggestion would be that you can TA based on tweeters and mid basses and store the two presets. And then on extended listening sessions, you can see which works well for you.

Last edited by akbaree : 23rd June 2009 at 13:17.
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Old 23rd June 2009, 13:16   #461
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did you try calculating distance and did you keep the sub at 0 delay.
If yes, then try the 2nd method i mentioned and see the difference.
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Old 23rd June 2009, 13:17   #462
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Quote:
Originally Posted by abhinav.gupta88 View Post
... Having time alignment in a passive setup is as good as not having one. It's an active setup where the time alignment can be put to best use.
And why so? One would think the only difference with a passive setup is that one is limited to -ive gain (attenuation) with passive components. Otherwise, for the same filter profile either will produce the same effect.

Are we confusing 'controllability' with 'inherent ability'?
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Old 23rd June 2009, 15:29   #463
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And why so? One would think the only difference with a passive setup is that one is limited to -ive gain (attenuation) with passive components. Otherwise, for the same filter profile either will produce the same effect.

Are we confusing 'controllability' with 'inherent ability'?
You are still not able to align the tweeters as close to the mid bass. With 2 dedicated channels to the tweeters, one will be able to make maximum use of the time alignment..
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Old 23rd June 2009, 16:30   #464
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Quote:
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You are still not able to align the tweeters as close to the mid bass. With 2 dedicated channels to the tweeters, one will be able to make maximum use of the time alignment..
But that doesn't means that TA in a passive setup is as good as not having one.

Are you running active or passive ?

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But can 8850 work as active head like P80 rs?
Nope it cannot!
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Old 23rd June 2009, 16:41   #465
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sorry for the ignorance,i dont want to disturb the intersting thread going on here,but as i am new-
can somebody please explain whats the difference between active and passive?
please post some links for my knowledge.sorry for the interruption.
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