The K&K Sound Definity pickup should be used in conjunction with a preamp or other audio equipment that has the ability to reverse the phase (a phase switch) of the signal somewhere between the pickup and the speakers/recording equipment. This is essential to insure that the proper phase relationship between the acoustic sound of the instrument and the amplified sound from the pickup is maintained. The design of this pickup and the variety of installation locations and instrument applications results in a lack of predictability of this phase relationship so a means to adjust this relationship must be included in the audio equipment chain.
The Definity System is a brand-new solution that delivers K&K's natural pickup power to a variety of difficult to amplify acoustic instruments in an elegant and easy-to-install package.
It is designed to work with virtually any floating bridge instrument, like Archtop and Macaferri guitars, and even semi-acoustic electric guitars with Tune-o-matic bridges. It is also well-suited for the banjo, cello, and many ethnic or folk instruments like bouzouki, saz, etc.
One single pickup element usually transmits an entire instrument with good balance.
The Definity System comes with a stereo endpin jack (soldered mono) that allows for future upgrades. The endpin jack includes a self-adhesive clip that can be removed. It allows you to choose internal or external jack locations.
The pickup is only 6/1000 of an inch thin and measures 1 3/4” x 3/4” total. We call it a “compression pickup” because it is especially suited for “wedged” applications under a floating bridge. However, the pickup element is capable of transmitting sound like soundboard transducer as well. In fact, we found that the best tone is achieved if the pickup is mounted so it is partially “wedged” and partially open on the soundboard.
The Definity pickup reaches its true potential with a preamp. A basic solution is the Definity Preamp, which features a phase switch, adjustable mid and treble controls (via trimpots), and a 1/4” line out.
A more professional solution combines the Definity pickup with a Pure XLR Preamp. It features +/-20 db bass, mid, and treble controls, plus an adjustable input gain control. Its noiseless circuitry provides unsurpassed clarity and power and the adjustable input gain allows you to dial in the precise amplification factor needed for your instrument.