Welcome to Zenitram Systems!  I introduced DoumbekFX  in 2001 as a way to liven up my doumbek and quickly developed it into a product that anyone can use in their own hand-drums!

DoumbekFX is a small battery-operated device that instantly installs inside any doumbek or other hand-drum (djembe, etc.).  From inside your drum, it emits powerful flashes of colored light from it's Ultrabright LED Array as you play any rhythm.  The head of the drum flashes Red when you his a bass tone, and blue when you hit a high 'slap' tone, providing a mesmerizing effect at any time, any place you play your drum!
The DoumbekFX/DSP unit is about the footprint of a business card.  It instantly installs into your drum simply by pushing it inside, using a spring-arm to hold it securely in place.  If you have multiple drums, you can swap one unit between them easily, or of course you can get one for each of your drums!

Click here, or on the "tech-spec" link above to learn more about  DoumbekFX/DSP!

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Zenitram Systems is the enterprise of myself, Rod Martinez.  As an electro-mechanical engineer for 16 years, I strive to embue my designs with reliability and simplicity, and take great pride in manufacturing my devices here in Ojai, California, USA.   With experience in electronics and mechanical design and fabrication, as well as in woodworking and sewing, I enjoy bringing various design ideas to life, and offer services in doing so.   DoumbekFX is one such project that I essentially comissioned myself to design.  (As you can see here, web design is not one of my strengths!)

For any questions, comments, or suggestions, please feel free to contact me at doumbekfx@gmail.com!

And products that I sell, I also back up with a personal guarantee that it will work for as long as you own it.  If any item ceses to function properly, I will make it right!  It's a simple guarantee (which I have not needed to use so far!), as my goal DoumbekFX, above all, is to make drumming even more fun!

Thanks for visiting, and I hope you enjoy learninng about DoumbekFX here!
~Rod Martinez
Zenitram Systems