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Great Trick Krispen, I'll have to try that sometime on my flamenco guitar.. Unfortunately for you Luis, The mics goose neck might get in the way of that technique as would a feedback buster. You might inquire at this site, they are based in San Francisco and are all about classical guitars. http://www.gspguitar.com/jsp2/customerService.jsp?pg=main , I've looked for a long time for a classical hole sized feedback buster, and I'm not sure any one makes one. I assume your controls are on the outside. My feeling about internal mics, is the less used the better :) The thing is, you are using a tiny inexpensive microphone capsule that is getting much less current (9 volts) than a typical studio condenser mic (18-48 volts typically), it is also placed inside the sound hole facing the back of the guitar which in itself is going to give a boxy "old time radio broadcast" sound character, and be more feedback prone. To design a microphone of this type, they have to design certain frequency response out of the mic to make it less feedback prone, as well, making the sound more low fi, and further away from the optimal mic sound, and placement in a controlled studio environment. I ran in to this problem with the Duncan Mag mic Pickup that I use in my Hawaiian lap guitar. I can only use a little mic to add a bit of body, otherwise the guitar will start to feedback, and will be come overly noisy to handle. Now if I was Lawrence Juber, and had the $700 dollar custom mic cabsule installed in my MagMic like he does, perhaps I'd use it more. The other issue is monitoring, if you are using conventional monitors I would definitely place them on stands, as any time I use my flamenco or steel string with monitors placed on the ground in a conventional way, I have problems with bass standing waves, and coupling feedback. I have been recently demoing the new Fishman tower linear speaker design that is lighter weight and almost a third the price of the Bose system. Yesterday I was playing a Guild cutaway nylon string with a simple fishman matrix pickup. This is a solid wood guitar made in China, and I sat right in front of the speakers as I played and we turned it up enough to fill the store, but we were up perhaps half way. NO feedback issues at all. Now I couldn't guarantee that for you if you were using an internal mic, and I'm pretty certain the fishman lacks any of the Bose search and destroy feedback technology, But the linear array design is remarkable for not producing as much midrange and low end howling. I will do some tests with a Martin that has a prefix premium system and let you know how it fairs. Otherwise a little goes along way with internal mics. Just a bit will give the guitar more body and potential for beat box tones on different surfaces, without increasing handling noise too much. Happy New Year one and all Bill -----Original Message----- From: Krispen Hartung [mailto:info@krispenhartung.com] Sent: Wednesday, December 31, 2008 11:38 AM To: Loopers-Delight@loopers-delight.com Subject: Re: feedback buster for nylon string The best method I have ever used, is to buy a black balloon, and blow it up inside the sound hole (not too tight, just enough to seal off the sound hole). Tie it off and turn it around so that you don't see the end. It is amazing, and costs about 3 cents. :) I learned it from an old jazzer years ago. Kris ----- Original Message ----- > Hi Loopers, > Is there a feedback reducer for nylon strings like the feedback buster > that covers the soundhole for steel string guitars? my recently acquired > flamenco guitar has the fishman Prefix Premium Blend with the internal >mic > and is very sensitive to feedback,so far i havent found anything that >fits > the soundhole of a nylon string.However the feedback buster solved all > problems on my steel string,great and simple gadget! > > www.myspace.com/luisangulocom > > > > >