The Stealth Up Close![]() The L-shaped wooden pieces sticking out the sides are the support ears. These hook over the vees between the thumb and first finger of each hand. The positions of the ears are adjustable to allow different amounts of finger curvature. Also seen on the sides (at the body corners) are two of the four spring clips that hold the body sections together. These just slide off to allow access to the inside. The touch-sensitive keyworks are mounted on the two five-sided plates attached to the top of the body. This modular construction allows the entire subassembly to be removed, so that different keyworks (e. g., for different fingering systems, or for improved designs) can be substituted without altering the main body. The touch-pad keys are made from strips of copper-clad PC board, with the copper peeled off except for square pads at the ends. Some of the keys are raised by brass blocks soldered onto the copper, the others have raised shoulders around their perimeters. The strips have slotted mounting holes, allowing them to be pivoted and slid, so the keys lie under the natural position of the fingers. The present keywork system has 17 keys: a main key for each of the first three fingers, three keys for each pinky, two "side keys" for the right-hand index finger, and three octave keys operated by the left thumb. In addition to the keyworks, a touch-sensitivepressure plate is mounted on the left-hand subassembly. The left-hand index finger operates this plate by rotating towards the player. ![]() Not visible is a second constriction, which is machined into a plastic rod pressed into the passage through beak. This constriction, in conjunction with the exit nozzle, regulates the flow of breath through the mouthpiece, as well as the pressure at the transducer. Also seen in this photo are the two subassemblies for whatever thumb keys and/or transducers are being used, and a bent aluminum bracket connecting the mouthpiece assembly to the main body. The overall length of the instrument is 19". ![]() Getting the octave keys comfortable was challenging, as can be seen by the large number of extra holes (aka, mistakes). The thumb contacts the three brass touch-keys by rocking. Rocking back contacts the -1 octave key (to the left in the photo), rocking forward contacts first the +1 octave key and rocking forward and rolling upward contacts the +2 octave key. The +2 octave key has precedence over the +1 octave key, so it can be touched alone or at the same time as the +1 octave key. As presently configured, the total instrument range is four octaves. ![]() ![]() Back Home |