I have a 5 piece band that I run sound for (from the stage, because I'm also the bassist). When the drummer hits his rack tom, I get a low frequency (~100hz) ring through the mains. I can kill the lead vocalists mic (who is located in front of the drum kit) and the ring disappears. Due to the size of my band and the small size of most venues we play, I can't relocate his mic. He's using a Shure SM58. I tried an SM57 to see if it would help and there was no change (which didn't surprise me). I can eq that frequency to reduce it, but then the vocals sound bad. If I turn the subwoofer down it helps, as well but then I don't have any kick drum punch out front. Anyone else have this problem, or have any suggestions? I'm using a Yamaha EMX5016CF powered mixer, so a 9 band graphic eq and the individual eq on the input strips is all I have to work with.
Low Frequency Feedback
- Thread starter Bob Yeager
- Start date
Re: Low Frequency Feedback
With that mixer probably the best hope is to insert a decent PEQ on the offending mic. Your GEQ and channel strip EQ aren't going to do the job. Do the channels have high-pass filters? If so, use them.
With that mixer probably the best hope is to insert a decent PEQ on the offending mic. Your GEQ and channel strip EQ aren't going to do the job. Do the channels have high-pass filters? If so, use them.
Re: Low Frequency Feedback
I would start with pushing the low cut switch right above the comp. and if that didn't work , then I would cut the lows a little bit on his mic.
Sent from my iPhone
I would start with pushing the low cut switch right above the comp. and if that didn't work , then I would cut the lows a little bit on his mic.
Sent from my iPhone
Re: Low Frequency Feedback
If you can keep the vocal mics out of the subwoofer that may fix your problem. The way a lot of people deal with this is they only feed the things that you want the low end on to the Subwoofer. So no vocal mics to the sub, usually only kick and bass and it is usually feed out of an Aux send and it is commonly called Aux feed subs. Now how to accomplish that with what you have I would need to know exactly how you have your system configured. How are you feeding the Sub now?
If you can keep the vocal mics out of the subwoofer that may fix your problem. The way a lot of people deal with this is they only feed the things that you want the low end on to the Subwoofer. So no vocal mics to the sub, usually only kick and bass and it is usually feed out of an Aux send and it is commonly called Aux feed subs. Now how to accomplish that with what you have I would need to know exactly how you have your system configured. How are you feeding the Sub now?
Re: Low Frequency Feedback
You could try reversing the polarity on the singers mic. I know your mixer doesn't have a polarity switch but you could use something like this; http://www.parts-express.com/neutri...-to-male-polarity-reversing-adapter--092-2410. Or make a short cable with pins 2 and 3 reversed on one end.
You could try reversing the polarity on the singers mic. I know your mixer doesn't have a polarity switch but you could use something like this; http://www.parts-express.com/neutri...-to-male-polarity-reversing-adapter--092-2410. Or make a short cable with pins 2 and 3 reversed on one end.
Re: Low Frequency Feedback
My mixer has a high pass filter, which is engaged on all channels except bass and kick. However, it rolls off at 80hz, which is lower than I need.
My mixer has a high pass filter, which is engaged on all channels except bass and kick. However, it rolls off at 80hz, which is lower than I need.
Re: Low Frequency Feedback
There is a Subwoofer 1/4" out, which I feed into a powered sub. With my board, I don't have enough auxes to dedicate one to the sub.
There is a Subwoofer 1/4" out, which I feed into a powered sub. With my board, I don't have enough auxes to dedicate one to the sub.
Re: Low Frequency Feedback
No, I don't use any of the 1 knob compression. I can't tell a difference when I use them.
No, I don't use any of the 1 knob compression. I can't tell a difference when I use them.
Re: Low Frequency Feedback
Hmm...I high pass a LOT of things higher than 80hz...especially in monitor mixes. I also high bass the bass as required...as with still range system with subs, a full range bass usually doesn't work well. Bass instruments naturally go down in level as they go down in frequency and rely on harmonics for their tone.!
Re: Low Frequency Feedback
See if you can get your singer to use an Audix OM7. They really are great at rejecting sound fro off axis sources. I have used them with great success in situations like yours.
See if you can get your singer to use an Audix OM7. They really are great at rejecting sound fro off axis sources. I have used them with great success in situations like yours.
Re: Low Frequency Feedback
+1 - OM7 is a great mic for drummers too. You just have to be right on top of it - but it will help a lot.
+1 - OM7 is a great mic for drummers too. You just have to be right on top of it - but it will help a lot.
Re: Low Frequency Feedback
If the singer works the mic very close (as is recommended when live), the mic's proximity effect is giving you a boost of about +10 at 200Hz and +8 at 100. This needs to be compensated for.
http://padrick.net/LiveSound/Proximity.jpg
If the singer works the mic very close (as is recommended when live), the mic's proximity effect is giving you a boost of about +10 at 200Hz and +8 at 100. This needs to be compensated for.
http://padrick.net/LiveSound/Proximity.jpg
Re: Low Frequency Feedback
This doesn't affect sources outside of the immediate proximity of the microphone, so I doubt this will make a difference in the ring from a tom.
This doesn't affect sources outside of the immediate proximity of the microphone, so I doubt this will make a difference in the ring from a tom.
Re: Low Frequency Feedback
While the proximity effect won't, the EQ cut will, so this may be a scenario where a microphone with more proximity effect is actually helpful.
While the proximity effect won't, the EQ cut will, so this may be a scenario where a microphone with more proximity effect is actually helpful.
Re: Low Frequency Feedback
True, I didn't intend that or think about it that way. Cool beans.
True, I didn't intend that or think about it that way. Cool beans.
Re: Low Frequency Feedback
And even with using the same microphone, if the singer can get used to working closer to the mike, both the level increase and the extra proximity will help a lot with this issue (and other related issues).
While rejection patterns generally are helpful, in a small room the pattern is often less useful in the low frequencies because the sound comes in from all directions.
And even with using the same microphone, if the singer can get used to working closer to the mike, both the level increase and the extra proximity will help a lot with this issue (and other related issues).
While rejection patterns generally are helpful, in a small room the pattern is often less useful in the low frequencies because the sound comes in from all directions.
Re: Low Frequency Feedback
Try to arrange things so that you do . Running subs off your main mix is not good.
Mick
Try to arrange things so that you do . Running subs off your main mix is not good.
Mick
Re: Low Frequency Feedback
Load of nonsense. In a decently tuned system, how the signal is fed to the subs makes no difference.
I am currently sitting at an analog Allen and Heath board with 4 qrx212 in the air, and a center cluster of 2 srx728 on a corner stage, fed off of a traditional l/r signal.
With the band on full tilt boogie, the bleed in the vocal mics is still more than 20 db below the vocals.
And this is not a band that is gentle with stage volume
Sent from my XT1254
Load of nonsense. In a decently tuned system, how the signal is fed to the subs makes no difference.
I am currently sitting at an analog Allen and Heath board with 4 qrx212 in the air, and a center cluster of 2 srx728 on a corner stage, fed off of a traditional l/r signal.
With the band on full tilt boogie, the bleed in the vocal mics is still more than 20 db below the vocals.
And this is not a band that is gentle with stage volume
Sent from my XT1254
Re: Low Frequency Feedback
For the OP,
My best guess is something like the bass guitar is triggering a natural resonance of the drum. I see this a lot on my corner stage when bass is set up next to the floor tom.
I didn't see if you were micing the toms but my guess is the actual loop is at the drum and not the vocal mic. Once the loop exists then the vocal mic is amplifying it.
I would look to fix it as close to the drum as possible by possibly moving the bass amp on stage, retuning the drum, adding a bit of drum gel, or a gate on the drum channel.
Sent from my XT1254
For the OP,
My best guess is something like the bass guitar is triggering a natural resonance of the drum. I see this a lot on my corner stage when bass is set up next to the floor tom.
I didn't see if you were micing the toms but my guess is the actual loop is at the drum and not the vocal mic. Once the loop exists then the vocal mic is amplifying it.
I would look to fix it as close to the drum as possible by possibly moving the bass amp on stage, retuning the drum, adding a bit of drum gel, or a gate on the drum channel.
Sent from my XT1254