how to pan blumlein pair

[Alexi]

hey there,


silly and short question over here..................how do you pan a pair of microphones that is arranged in a blumlein position?


I guess i just leave them both in the center right?



cheers

[George Necola]

yes

http://psbg.emusician.com/ar/emusic_...sure/index.htm

read the article above:D

cheers

[Alexi]

thanks george,


are there any pictures belonging to that article?

I think they refer to pics. in the text but i dont see any.....



greetings


alex

[JonCraig]

maybe i'm misunderstanding... how do you pan them? depends on how wide of a stereo spread you want. hard left & hard right gives you max stereo image. leaving them both up the middle, as you've suggested, gives you no stereo image. it's mono.

--jon

[Blast9]

Yeah -- I thought the whole idea was to get a stereo image:

If you pan centre, you'll lose the stereo image.

BTW --- Pure speculation, but wouldn't you have to pan hard rigt/hard left to get a true representation of the blumlein image, as the sound pickup is converging on a single point ?

[Alexi]

so hard left and hard right is the way to go?



i am using them as drum room mics.

[pkautzsch]

If room mics, I'd always pan them hard L/R. Prefer spaced setups for room mics, though, since that sounds more spacious.

[Blast9]

Well, I didn't know this but, it seems the closer you are to source, the wider the image can get:

Quote from the link posted earlier:

"One common problem is excessive room sound. To compensate, engineers often position the mics closer to the sound source, thereby increasing the ratio between direct and reverberant sound. This compensation, however, can overemphasize pickup from the center of the source, which in turn can make it harder to pinpoint the locations of sound sources at the far ends of the stereo spread (that is, at "the edges" of the 90-degree arc defined by the front-facing polar patterns). In other words, as you move the mics closer to the source, the stereo spread starts getting too wide."

For room mics it should be great, unless the rear pickup is blurring the sound too much (i.e. picking up equal amounts of front and rear or more rear, or if the room is too reflective).

[d_fu]

Originally Posted by Alexi

how do you pan a pair of microphones that is arranged in a blumlein position?
I guess i just leave them both in the center right?

Sure, if you want a mono signal...
Blümlein is a (coincident) stereo setup, so hard left and right is the way to go.

Daniel

[T.RayBullard]

hard left and right.

[Alexi]

thanks guys

[fifthcircle]

And in a studio if you are worried about the rear lobes, place a gobo of some sort at a distance to absorb what you want absorbed. Close in will absorb a lot and further out will obviously absorb less.

I'll also add that when recording with good multipattern mics (I use an AKG 426 stereo mic for much of my blumlein work), you can bring in the rear lobes a bit towards hypercardiod and deal with room that way. Crossed hypers at 90 degrees will give you the same quality of imaging as a blumlein pair, but without the room issues.


--Ben

[George Necola]

hard left and right.

damned.. I was fukkin wrong:D

I hate myself now.. (searching the next bridge to jump from) fuuck

thanx for correcting it

[Blast9]

LOL

I love gearslutz!