two mics on a snare drum...

I'm going to try recording two mics on a snare drum as part of the whole kit setup. One on top in the usual spot and one underneath. i hear that i'm suppose to switch the bottom snare mic out of phase with the top mic. how exactly is this done in Logic?

thanks in advance...

G5 dual 2ghz, Mac OS X (10.4.8), 7.2.2 : Firepod : k49

Posted on Jan 19, 2007 1:34 PM

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25 replies

Jan 19, 2007 2:00 PM in response to Christopher Jennings

If your mic preamp doesn't have a phase flip switch...

For the bottom mic's phase to be flipped as it records INTO Logic, you'll need to record through an input object, with the gainer plug-in on that input object, with the phase switch on the gainer plug-in selected.

However, you could also simply put the gainer plug-in on the bottom mic channel, for monitoring. Then, when the session is over, either export that track with the gainer plug-in on it (so that you are bouncing an inverted audio file), which you can then re-import back into Logic, or... open the sample editor, and select the whole audio file, and select the "Invert" function, found under the sample editors "functions" menu.

Other options include buying a phase reversal connector, that you plug onto the end of the mic cable, or simply reverse the wires inside the mic cable If your not sure how this is done, I'm sure you could google it, and find a step by step tutorial, quite easily.

Jan 19, 2007 2:24 PM in response to Jim Frazier

my firepod doesn't have phase flip switches so i'll have to try the software option. I'll try your suggestion of monitoring with the gain plug on the bottom mic channel and then invert it once the recording is done.

regarding the gain plug-in. once it's active on the channel do i simply push the "phase invert" button in the default mode or should i select another setting from the drop down carrot, such as "invert phase - stereo" or does it matter?

thanks again.

Jan 19, 2007 7:30 PM in response to ionesh

It's the bottom mic that needs the phase flipped, mostly coz it's the one pointing up while most of the other mics are facing down.

I've got channel presets for all my drum channels, and the first plugin in the chain is always either Logic's GAIN, or an EQ with a phase switch (like the URS ones). As a general rule, it's always a good idea to listen to your drum tracks in mono and try flipping the phase on various tracks - especially the kick. Very often you'll hear a great surge in bass response when the phase is inverted, and that's usually the best sign that you're getting less cancellation.

But there are no rules - if you like the sound of out of phase mics, leave'em that way. The key is to try and mess around with phase so you know what it's doing. It can make a huge difference, especially when you're using lots of mics.

cheers

Jan 19, 2007 8:26 PM in response to Christopher Jennings

Jim Frazier's response horrified me.

The answer should be as simple as saying "Put the gain plugin first on the track and click the phase invert button." That's it. Switching the cables in the cord? Re-exporting another audio file? Using the environment to put a plugin object on the... what? If there's one simple way to do it, why come up with four hard ways to do it that do EXACTLY the same thing?

(I know there is one advantage - monitoring. This is only important if you have half an hour to experiment with mic placement, which you probably don't.)

Jan 20, 2007 6:07 AM in response to upakrik

Jim Frazier's response horrified me.


The answer should be as simple as saying "Put the gain plugin first on the track and click the phase invert button." That's it. Switching the cables in the cord? Re-exporting another audio file? Using the environment to put a plugin object on the... what? If there's one simple way to do it, why come up with four hard ways to do it that do EXACTLY the same thing?


Sorry, didn't meant to sound like I was complicating matters... : )

If the mic pres had a phase flip switch, this could be taken care of at that point, and never mentioned or thought of again!

But because Christopher doesn't have mic pres available that have phase flip switches, he has to improvise. Putting a Gainer plug-in on the bottom snare channel, and then flipping the phase button will only work for monitoring. It won't record the bottom snare track that way.

And if the project is going to start and finish in Logic, with Christopher engineering the whole thing, then that's really all that needs to take place. So yes, it can be that simple.

But if the tracks are going to go elsewhere, then the recorded signal really should reflect the inverted phase, which requires a bit more effort, because, the phase couldn't get inverted on the way into Logic.

Hope that made sense...

Jan 20, 2007 6:33 AM in response to Christopher Jennings

as long as i'm at it, here is my current mic'ing set up for the kit.

snare: top (sm57) bottom (at2020) - i have not yet recorded this snare setup...
h-tom: top (sm57)
flr-tom: top (sm57)
kick: inside (beta 52a)
room: ksm27 - about 15 feet away from the front of the kit, 4 feet off the ground.

i would also like to get two overhead mics so as to get a good stereo image of the kit. any suggestions in a "medium" price range?

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two mics on a snare drum...

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