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                  Frank Geiger
This "Ideas & Downloads" Page Includes Thoughts, Suggestions and Recommended Downloads Related To Musical Sound Surface Waves, Our Products and Playing The Tenor Banjo and Similarly Tuned Instruments.  Please See The Blog Page For Additional Information on These Subjects.
    ​​​​Free 31-Page Tenor Banjo / Tenor Guitar Chord Building  Book

This book, which I wrote 10 years ago for tenor banjo and tenor guitar players, can be downloaded free here.  It quickly summarizes chord theory and then uses a unique color graphics method to help the player "build" any chord anywhere on the fingerboard.  The method is based on the fact that the fingeboard location relationships of harmony "levels" of any chord (the "root" or "1" note, the third or "3" note, the fifth or "5" note, etc.) on all fifths-tuned instruments are FIXED!  For example, the 3 is always to the immediate upper left of the 1, the 5 is always to the immediate right of the 1, the 3 and the flatted 7 (7b) always alternate along a diagonal from lower left to upper right.  These fixed relationships are easily seen and remembered by assigning colors to these levels, e.g., Roots (1's) are Blue, 3rd's (3's) are yellow, (5's) are red and flatted 7th's (7b) are Green.   So to build any chord first find any fingerboard location of any root note (the note named in the chord) and then you know the locations of all the other levels of the chord.   The levels you need are defined by the "formula" for the particular chord.  (All chords have formulas.)  For example, the formula for a major chord is, (1,3,5).   So to make a major chord finger any blue dot fingerboard location, yellow dot location and red dot location.  You know where they are now.  Because their locational relationships are always (and forever) FIXED!
The name of this PDF file is: BuildAnyChord,AnywherePDF copy.pdf
2-Page Drawing "Dual Low and High Frequency Surface Acoustic Wave Amplifiers For All Banjos and Similar Stringed Musical Instruments", (Also Included with Amplifiers When Shipped) 
   This 2-page dimensioned drawing describes how to make a set of two mechanical amplifiers, (one for low to mid frequencies and another for mid to high frequencies), which are taped to the inside surface of the banjo's wood rim to improve the banjo's volume and sound quality.  A materials list is shown on page 2 and includes four 3-1/2" x 2-1/4" Kraft paper coin envelopes, a few feet of 1/2" wide 3M-Brand #300 Transparent Tape, 13 each 1/2 inch wide "Swingline" Brand "S.F. 4 Premium Professional Plus Series" steel staples, a Swingline Brand stapler and 2" x 2-1/2" of .001-inch thick brass foil.

   The low frequency amplifier is shown on the left side of each page and the high frequency amplifieris shown on the right side of each page.

   The drawing should be used with the Specification Text PDF Document (downloadable below) which describes how it works and covers installation instructions.

The name of this file is: DwgBanjoDualAmpPDF2BP
3-Page Document Titled, "SPECIFICATION Low and HighFrequency Surface Acoustic Wave Amplifiers For All Banjos and Similar Acoustic Stringed Musical Instruments" (Included with the Product When Shipped)

     This document provides background how the inventor discovered through personal experimentation over ten years that surface acoustic waves on the surfaces of musical instruments when played, could be captured and converted into air pressure waves of audible sound in the sound chamber of the instrument.  Once there this feedback of new audible sound mixes with the normal sound of the instrument to  improve sound volume and quality.  (Sound quality is improved because harmonics are amplified.)

     The physics general wave principle, "Constructive Interference" is explained.  This is the principle which makes this invention both possible and practical using very simple and inexpensive materials.  Why the banjo is particularly well suited to exploit this principle is also explained.

   Successful techniques and materials used to efficiently transport surface acoustic waves and convert them into audible sound are described.  Finally, the document describes recommended amplifier locations in the banjo and several installation hints to get the best sound from the banjo.

The name of this file is:
The name of this file is: Improved Dual Amp Placement
1-Page Document titled, "My First Experience Linking Surface Acoustic Waves To Excellent Sound Quality From A Banjo", by John F. Geiger, (08/20/2018)

     I didn't know why at the time but I knew that covering ugly saw and knife cuts that I made to my tuned banjo bridges (to improve appearance) with gold covered Mylar tape improved the quality of the sound of my banjo! (?)  Years later I figured out why, which is explained in this document.  Curious?   Read the probable reason by clicking the Download Button.