levi2
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Post by levi2 on Nov 26, 2006 21:02:29 GMT
Heres a one if anybody has any ideas done a gig stage average size bout 3 ft high on a angel in a corner got lots of bass hum/feedback. Had to switch off the sub bin also take bass off main mixer also had to take reverb down on vocals which didnt have a lot on to start off with. still had hum now and then we lost a bit of sound quality because of this.So has any1 got any ideas how to prevent all this.The stage was hollow and we had rubber mats under mic stands..if no cure next time we will have to set upon the solid floor and leave stage out.
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levi2
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Post by levi2 on Nov 26, 2006 21:08:50 GMT
think ive put this on the wrong bit of the forum lol  |
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Post by thingyy on Nov 27, 2006 0:00:38 GMT
I guess you are not using stands ? Try and get the speakers up off the floor of the stage.
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levi2
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Post by levi2 on Nov 27, 2006 0:03:14 GMT
thingyy yupp i am using stands only thing i can think of is very bad acoustics in the room or that part of the room and stage
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gibbo
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I'm not lost, I followed you home
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Post by gibbo on Nov 27, 2006 2:46:26 GMT
OK. Tell me more about your setup, it's true there are some horror acoustics in rooms but from what you described it sounds like something else...
Hum that audible is usually dirty power, leads with earth/ground off, or bum leads somewhere. Bass boom/feedback is usually things like vocal mics going to the sub. There's really no point sending your vocals to the sub, it just clutters the sound and you lose definition on bass and drums. The human voice doesn't produce sub frequencies so you should wind the bottom out of the vocal mics if you don't have a bass cut on your vocal channels.
Give us a bit more info and I'm sure we can help.
Cheers, Dave
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Post by Steptoe on Nov 27, 2006 3:17:09 GMT
Setting up in a corner is always bad news!
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Post by thingyy on Nov 27, 2006 3:36:02 GMT
The floor of the stage is acting as a bass reflex.Stick the PA speakers off the stage, if you can. Try to avoid touching the mike stands as the thin light ones are renown for booming on thin stage floors, if you can set them up in more of a tripod instead of spread would be better. Less contact with the floor if you get my drift !
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Post by thingyy on Nov 27, 2006 3:37:33 GMT
The floor of the stage is acting as a bass reflex.Stick the PA speakers off the stage, if you can. Try to avoid touching the mike stands as the light ones are renown for booming on thin stage floors, if you can set them up in more of a tripod instead of spread would be better. Less contact with the floor if you get my drift !
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Post by thingyy on Nov 27, 2006 3:38:08 GMT
OOOps slips.
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levi2
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Posts: 667
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Post by levi2 on Nov 27, 2006 9:37:40 GMT
ok thanks for the replies.
This has only happened at one venue heres the set up
the main speakers are on stands
the backing goes thru them also thru one powered sub which is on the floor
the vocals dont go thru sub or any instruments just the backing
And what we were getting was bass /boom feedback
we also have floor monitors but we turned them off but that didnt help
there was really nowhere to stand speakers on the floor.
the only thing we didnt do which i just thought of was prolly raise pole up on stands so speakers were higher, but if the sound was coming thru stage floor dunno if this would of helped. Thingyy was near the point the stage acting as a bass reflx
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Post by guilty on Nov 27, 2006 11:24:54 GMT
I feel (as Steptoe said) this is a corner issue more than anything. I have a similar problems setting up in a corner even if it's on a concrete floor. Moving your sub away from the corner as far as possible will help and of course.....if it's a wooden stage....keep the sub off the stage.
Setting up in a corner IS always bad news.
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