The Wave-Length Multi-Source is a sensing and amplification system for acoustic guitar that blends an under-the-saddle pickup with a microphone. The pickup is a unitary design, constructed using a single layer of a piezoelectric co-polymer. 100% coverage copper shielding
on the pickup insures immunity to external noise fields and quiet operation. The microphone is a miniature, omnidirectional electret condenser selected for linear response and exceptional sonic quality. A lightweight Control Module, discreetly mounted just inside the sound hole, allows fingertip control of the pickup-to-mic mix ratio. Two low-profile potentiometers are utilized; one for the microphone level and one for master volume. The Control Module also serves as the anchor point for the microphone which is shock mounted using a special absorptive visco-elastic polymer. This feature isolates the mic from undesirable vibration and handling noise; providing detailed, transparent sound quality.
The supporting electronic package is made up of discrete hybrid circuitry, utilizing low noise field-effect transistors configured for class A operation. It provides exceptionally low noise, low distortion, low output impedance, high headroom and long battery life. Two internal adjustable trim pots are provided that allow up to 9dB of bass and/ or treble boost on the pickup channel. The bass control can be used to highlight the body resonance and warm up the sound while the treble control can add brilliance and clarity and allow the player to cut through a stage mix. The microphone channel has a two stage frequency roll-off applied to combat any tendency towards low frequency feedback. Finally, for those wishing to customize their system, there is a user-configurable jumper on the PCB that allows the system to be configured for stereo output; assigning the mic to the “Ring” connection and the pickup to the “Tip” connection of the output jack.
The preamp is fully enclosed in a lightweight, anodized aluminum shell giving high immunity to hum and noise. The preamp is directly connected to a special TRS stereo endpin jack equipped with an additional sleeve connection to accommodate switching of the battery ground. The entire unit is powered by a proprietary voltage boost circuit that produces high headroom 18 Volts from two compact AA batteries.