speaker placement/cancelation - Page 2

82801BA · 12-05-2004

Quote:

Originally Posted by 82801BA

Rabbit, I don't get what you mean by TC, can you explain that?

PS. Never mind, just didn't get the term. Ha....
Anyway, what happens to the sonic hole in the center? How does it happen?

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tbaleno · 12-05-2004

Time correct. Basicly delay the time that the speaker(s) fire in relation to some other speaker(s). what this does is to coordinate the time the sound arives at a location so it all arives at the same time.

The only problem with time correction is ususaly it only works for one seat in the car.

82801BA · 12-05-2004

Seems like TC doesn't work for my car. I have no idea.....

WhiteRabbit · 12-05-2004

grab the seven snare drum track from the iasca disc from kazaa. itll be easier ot see if correction is helping you or not.

tbaleno · 12-05-2004

How do you know your maturing car audio wise?

Ans: When you throw out all your Bass mechanic CDs and drive around town with the windows rolled down playing the iasca seve snare drum track.

Just a joke guys. I know you can do both

WhiteRabbit · 12-05-2004

whatll really blow your mind is how to get an even distribution of snare drum, rather than correcting a perfect center image and finding the three on each side bunched together.

82801BA · 12-06-2004

I remember in doing this, not only TC has a role, but balance also important....I really don't understand why, because balance should remain in the center. Anyway, probably is reflection or something.....

darklegacy540 · 12-07-2004

One of my friends has a 2001 Cadillac DeVille and he has an Alpine deck, I don't remember what model but I noticed right away when I rode with him, the imaging sounded really bad.. but then I forgot that he had all of the TC settings so it sounded good to him..

LudlamTheory · 12-08-2004

Quote:

Originally Posted by darklegacy540

One of my friends has a 2001 Cadillac DeVille and he has an Alpine deck, I don't remember what model but I noticed right away when I rode with him, the imaging sounded really bad.. but then I forgot that he had all of the TC settings so it sounded good to him..

you want hard? try dual seat judging. in the higher iasca classes they judge both seats for imaging... now thats a pain in the ass

82801BA · 12-08-2004

by dual seat judging i think he will only get 1/2 of what he has.....
Anyway, we build our system to self pleasure, why we want to care about what imaging is for the passenger? That only creates headaches and I am not going into that....

darklegacy540 · 12-08-2004

Quote:

Originally Posted by LudlamTheory

you want hard? try dual seat judging. in the higher iasca classes they judge both seats for imaging... now thats a pain in the ass

Wow, that's crazy and it does sound like a pain in the ass as you said.. I think that's just something I'll try to stay away from ha.

drummerboy990 · 12-08-2004

Another thing to take into consideration is that placing your tweeters a good distance from the mid bass isn't good for imaging.

WhiteRabbit · 12-08-2004

Quote:

Originally Posted by drummerboy990

Another thing to take into consideration is that placing your tweeters a good distance from the mid bass isn't good for imaging.

*shrug* I see that all the time at competition....... the imaging characteristics are still amazing in their cars.

I would say its an effect caused more by how on or off axis a speaker is positioned at what distance from equal pathlength that would make all the difference. afterall, if the speakers are equal pathlengths, they will be 100% in phase, whether the speakers are in front of you or even behind you, much less merely high and low.

so its definitely possible with tweets up high and mids down low to get fantstic imaging, even with midbasses behind you! its all about pathlength and dispersion patterns

tbaleno · 12-08-2004

I am not an expert but I believe this is where time correction can help too. Since basicly it can equalize the path lengths. Since the mids and tweeters will likely be at the same level for driver and passenger you could in theory delay the tweets (if they are in the a pillars they will likely be closer) and raise up the sound stage of the mids because your ear will be fooled into thinking all the sound is coming from the closest speakers.

Can anyone tell me if this is correct or is my assumption false?

darklegacy540 · 12-08-2004

Quote:

Originally Posted by WhiteRabbit

*shrug* I see that all the time at competition....... the imaging characteristics are still amazing in their cars.

I would say its an effect caused more by how on or off axis a speaker is positioned at what distance from equal pathlength that would make all the difference. afterall, if the speakers are equal pathlengths, they will be 100% in phase, whether the speakers are in front of you or even behind you, much less merely high and low.

so its definitely possible with tweets up high and mids down low to get fantstic imaging, even with midbasses behind you! its all about pathlength and dispersion patterns

For awhile, I had my tweets up high in the A-Pillars near the headliner and my mids in my kickpanels.. But then I relocated the tweets in the factory location in the sail panels but I still got awesome imaging with the previous set up.