Members nickguz Posted November 26, 2013 Members Share Posted November 26, 2013 Just a quick question. For vocals when my band practices, they're pretty low, because if we turn them up, we got lots of feedback. We practice in a small room, so that's probably the reason. But, my question is: Is the feedback due to the room being small and the mic being close to the speaker etc. or is it because of a crappy keyboard amp being used as a PA? Link to comment Share on other sites More sharing options...
Members DanBAP Posted November 26, 2013 Members Share Posted November 26, 2013 lulz Link to comment Share on other sites More sharing options...
Members Tomm Williams Posted November 26, 2013 Members Share Posted November 26, 2013 You are either too close to the speakers, using a junk mic or perhaps using a lot of reverb ? Link to comment Share on other sites More sharing options...
Members loco_p_man Posted November 26, 2013 Members Share Posted November 26, 2013 Some very simple suggestions : 1. Turn everything down - this is the best and cheapest answer.2. Try to minimise the sound reflecting off the surfaces by using soft coverings wherever possible - like curtains.3. Try to have the bottom of the mic pointing at the speaker that is reproducing the vocals - in other words minimise the likelihood of the sound coming out of the speaker being picked up by the mic.4. Improve the quality of equipment; some mics are better at rejecting feedback than others (lots of threads in this forum, do a quick search). IME improving the quality of speakers has reduced feedbackIt is very unlikely that a feedback destroyer is going to help in this situation. Do the basics right and you will at least stand a chance. In the end you can't overcome the laws of physics and the limitations of the room you are in and the kit you have.Good luck, Link to comment Share on other sites More sharing options...
Members nchangin Posted November 26, 2013 Members Share Posted November 26, 2013 Google "how to ring out monitors" Link to comment Share on other sites More sharing options...
Members Pro Sound Guy Posted November 27, 2013 Members Share Posted November 27, 2013 "But, my question is: Is the feedback due to the room being small and the mic being close to the speaker etc. or is it because of a crappy keyboard amp being used as a PA?" You answered your own questions. Link to comment Share on other sites More sharing options...
Members Tomm Williams Posted November 27, 2013 Members Share Posted November 27, 2013 Does that amp have on-board EQ? are you making drastic boosts ? If so, return the sliders to 0, it will most likely help. Link to comment Share on other sites More sharing options...
Members JV90 Posted November 27, 2013 Members Share Posted November 27, 2013 It seems to me that your problem is on the input gain for the mics, try to understand how a proper gain structure is made of and applied into the mixer to handle the feedback Link to comment Share on other sites More sharing options...
Members agedhorse Posted November 27, 2013 Members Share Posted November 27, 2013 Gain structure and input gain control does not matter for feedback purposes. Total gain is the limiting factor, the amount of total gain will be limited by how much the unwanted signal (that causes feedback) is rejected. Link to comment Share on other sites More sharing options...
Members Audiopile Posted November 27, 2013 Members Share Posted November 27, 2013 nickguz wrote: Just a quick question. For vocals when my band practices, they're pretty low, because if we turn them up, we got lots of feedback. We practice in a small room, so that's probably the reason. But, my question is: Is the feedback due to the room being small and the mic being close to the speaker etc. or is it because of a crappy keyboard amp being used as a PA? Likely more-so because of the keyboard amp & mics, and possibly mic placement. Sounds like a bad combination all around. I suspect an upgrade is in order... basically step-up to some semblance of the right tools for the job, or figure out how to live with the current situation. Link to comment Share on other sites More sharing options...
Members dboomer Posted November 27, 2013 Members Share Posted November 27, 2013 Hey Nick All of these things are factors so it depends how small, how close and how crappy. Ultimately the room size will be the final arbiter. If you had a million dollar system run by a pro it will still be the final limit. But you won't hit that brick wall if your other problems hold you back before you get there. Link to comment Share on other sites More sharing options...
Members Audiopile Posted November 27, 2013 Members Share Posted November 27, 2013 dboomer wrote: Hey Nick All of these things are factors so it depends how small, how close and how crappy. Ultimately the room size will be the final arbiter. If you had a million dollar system run by a pro it will still be the final limit. But you won't hit that brick wall if your other problems hold you back before you get there. yea, but Don, I gotta ask: What mics physically/conveniently plug into a cheap keyboard amp? Link to comment Share on other sites More sharing options...
Members Shaster Posted November 27, 2013 Members Share Posted November 27, 2013 I'm coming at this from hands on experience. Having used a "crappy" keyboard amp for monitors in band practice, I'm going to make the following assumptions. There probably isn't a horn assembly in the amp just a low cost peizo tweeter. There probably isn't a Graphic EQ, but probably somewhat ineffectual 2 or 3 pots; bass, mid, treble. The vocalists are using a Shure SM57 or something similar - in essence a mic with a good, but perhaps in this case unwanted mid presence. And lastly, because of the lack of highs, you are turning the amp up to hear the sizzle, but you are not able to "ring out" the area of 500 to 1khz (or whatever), and so feedback in those areas ensues. Then you add the problems of your specific room.Those are guesses based on my own experience of using a "crappy" keyboard amp for rehearsals. Link to comment Share on other sites More sharing options...
Members nickguz Posted November 27, 2013 Author Members Share Posted November 27, 2013 That is about dead on, haha. But the amp is fine for practice, I'm not looking to buy something else, just wanted to know if there were any ways to avoid the feedback, but in this situation, I guess there isn't. Link to comment Share on other sites More sharing options...
Members StratGuy22 Posted November 27, 2013 Members Share Posted November 27, 2013 Buy a fender passport. It's not bad for rehearsal. Link to comment Share on other sites More sharing options...
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