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Old 7th November 2019
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Originally Posted by pbalzano1 View Post
Hi, my name is Philip Balzano and I'm a singer.
I recently started working at a cafe that uses 2 flying QSC K12s and Mackie 1501 sub. The sound was fine for a while but last month I started to struggle with voice problems. It seems I was straining too much and my cords would dry up really fast. I found something that might be the cause of the problem but need to ask you Pros if I'm on the right track. I tried to figure out why I was getting more feedback when before there was none. What was happening was that I heard myself differently and thought it was just a matter of raising the volume but when I did, it would feedback. So, I left the volume low and kept straining to hear myself. I always position myself as close to halfway between the speakers as possible and behind them so I'm only getting reflected sound. We have an old Turbosound Milan that we use as a floor wedge but it sounds so terrible that I just use it to play some music for pitch reference. I often stroll out to the audience and noticed that the sound was different out in the room as well. I looked at the positioning of the K12s and the first thing I noticed was, that the management had placed a video screen about 6" in front of the speaker right where the highs come from. the screen is one of those that has a remote control and unravels for showing videos. It's about 6" tall and about 7 feet wide. Just enough to cover both speakers at the same point ( Highs ). Could this be my problem or at least part of it? Well, that's all I can think of. Please help, Really struggling here!
Hi Philip! Welcome to Gearslutz
I'm currently reviewing the Earproof PRO (a passive earbud that attenuates sound in loud environments) which is aimed at performers/audio engineers. A couple of your comments reminded me of the Acoustic Reflex which is the human body's natural response to loud sound; the reflex dampens down the ear's mechanical parts to attenuate sound and it is instinctive and unconscious.
An associated effect - the Lombard Effect - occurs when high sound pressure level (SPL) reaches the threshold of Acoustic Reflex: the vocalist will automatically raise their vocal level and strain their voice to compete with the environmental sound/backing music.

Devices like the Earproof PRO attenuate the sound pressure level so that the Acoustic reflex is not triggered and the voice is not automatically raised.

The full review will be published soon so I'll add a link asap.