Abstract: A mobile stage configured for reconfiguration between trailered and deployed configurations featuring a hydraulic ram with a lifting carriage for lifting towers and tower mast caps into place to raise a stage roof above a stage floor. Additional features include slide-out speaker wings which provide additional structural stability when stored within the stage structure, spanner beams that are folded flat inside the roof when the trailer is in the enclosed traveling position, and which can span the entire roof, meaning there are no areas of the roof where lights or equipment cannot be hung. It also creates a 1?×1? grid system to be used for both the hanging of equipment and the easy calculation of the load on each section of the roof.

Abstract: A mobile stage configured for reconfiguration between trailered and deployed configurations featuring a hydraulic ram with a lifting carriage for lifting towers and tower mast caps into place to raise a stage roof above a stage floor. Additional features include slide-out speaker wings which provide additional structural stability when stored within the stage structure, spanner beams that are folded flat inside the roof when the trailer is in the enclosed traveling position, and which can span the entire roof, meaning there are no areas of the roof where lights or equipment cannot be hung. It also creates a 1?×1? grid system to be used for both the hanging of equipment and the easy calculation of the load on each section of the roof.

Abstract: A multi-channel noise reduction system provides improved noise reduction with direct instrument tracking of all channels. In a two channel noise reduction system, both channels detect and track the input level and dynamic range of the guitar directly with one channel of dynamic noise reduction between the guitar and the input of a guitar amplifier to eliminate the noise of the instrument and another channel of noise reduction connected in the effects loop of the guitar amplifier. Multiple channels of noise reduction can be implemented with separated threshold controls and with low level expansion and dynamic filtering being combined so as to detect and track the input level and dynamic range of the guitar directly. A buffer amplifier can be used to feed the direct guitar signal to the detectors of the noise reduction system and the input of a stereo guitar system.

Abstract: An instrument amplification system provides improved low frequency enhancement. A powered subwoofer system enhances the low frequency components of a standard instrument amplifier by incorporating a speaker level high-pass filter crossover network prior to connection to a standard instrument speaker. The speaker level instrument amplifier output is also attenuated, low-pass filtered and re-amplified to drive a dedicated low frequency subwoofer speaker. In one embodiment, a single speaker cabinet connects via a single speaker cable and includes both typical instrument speakers and an active powered subwoofer system. In another embodiment, a stand alone active powered subwoofer connects to a standard instrument amplifier and includes a speaker level high-pass crossover output for connection to a standard instrument speaker cabinet. The instrument amplifier speaker output is attenuated, low-pass filtered, re-amplified and connected to a low frequency subwoofer speaker.

Abstract: An improved dynamics processing control system clamps a level detected control signal at a level equal to a predefined threshold point. In one embodiment, a clamped level detected signal feeds a filter with very slow response characteristics. By comparing the difference between the input and the output of the system a differential control signal generated. The differential control signal is used to provide a continuously variable, program dependant output signal when the input signal drops below a threshold point. In another embodiment of the invention, both the attack and release times of the system are varied in response to a differential control signal.