Members twostone Posted August 17, 2013 Members Share Posted August 17, 2013 Do omni direction subs have rear projection or back blow ? that can cause low end feedback if a vocal mic is to close to their proximity. Since they have sphere shape pattern. Link to comment Share on other sites More sharing options...
Members RoadRanger Posted August 17, 2013 Members Share Posted August 17, 2013 twostone wrote: Do omni direction subs have rear projection or back blow ? that can cause low end feedback if a vocal mic is to close to their proximity. Since they have sphere shape pattern. Not if you are running them aux-driven properly . Even if not aux-driven you should have your vocal mics high passed. Link to comment Share on other sites More sharing options...
Members agedhorse Posted August 18, 2013 Members Share Posted August 18, 2013 All subs are effectively omnidirectional because of the frequency range compared with the baffle dimensions. If you have a lot of sub gain relative to system flat response, the excess gain can cause feedback because the system becomes unstable at low frequencies on inputs that have enough gain. High pass filters are inportant in this case, and aux fed subs can also help. Link to comment Share on other sites More sharing options...
Members Tomm Williams Posted August 18, 2013 Members Share Posted August 18, 2013 Have you determined that this problem exists with your friends system or is this hypothetical? Link to comment Share on other sites More sharing options...
Members agedhorse Posted August 18, 2013 Members Share Posted August 18, 2013 Can you draw a diagram of what you propose to recommend to your friend? I have a hunch that maybe there's something wrong but not totally sure based on your text. Link to comment Share on other sites More sharing options...
Members twostone Posted August 18, 2013 Author Members Share Posted August 18, 2013 Tomm Williams wrote: Have you determined that this problem exists with your friends system or is this hypothetical? Well they text me from their gig so pretty so it's a problem. Which they're playing so I guess they solved the problem since haven't got a text back. Link to comment Share on other sites More sharing options...
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