User manual PRESONUS MP20

[. . . ] Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. In no event will PreSonus be liable for incidental, consequential or other damages resulting from the breach of any express or implied warranty, including, among other things, damage to property, damage based on inconvenience or on loss of use of the product, and, to the extent permitted by law, damages for personal injury. Some states do not allow the exclusion of limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. [. . . ] This pad provides a more manageable signal from high output devices giving the operator greater control over the in-coming signal and a much reduced chance of over-driving the input and thereby avoiding distortion. The MP20 has +28 dBu of ? ? ? ? 5 OVERVIEW headroom on each channel. This feature gives you a very wide dynamic range and excellent transient response characteristics. ? Rumble Filter. A Rumble filter is provided on each channel for eliminating low frequency noise. This lets you greatly reduce background noise such as air conditioners or wind noise with the flick of a switch without effecting the desired frequencies. Each channel of the MP20 has a separate XLR microphone input on the rear of the unit and a female 1/4"instrument input jack located on the front panel. These feature an IDSS control (this control adjusts the drain current on the input FET amplifier altering the even harmonic levels of the signal being passed) with an adjustment range of 0% to 100%. As the control is rotated to the 100% position, the signal' even harmonic series is s boosted giving the signal " warmth" very much like a vacuum tube or similar to the sound of analog tape saturation. This remarkable effect gives you the sound of a tube without the headache of uneven performance often encountered with vacuum tube devices ( no tube to pickup RF or to age and become " microphonic" ) Mix Bus. The MP20 has a stereo summing bus for combining the input signals assigned to the bus using the L/R function switch on the front panel of the MP20. A pan knob allows the placement of the selected signal anywhere in the stereo array of the stereo summing bus out-going signal (i. e. - left; left-center; center; right-center or ? ? ? 6 OVERVIEW right). ? High Gain Headphone Jack. Inserting stereo headphones into the jack on the front panel of the MP20 enables the user to monitor the signals assigned to the Stereo bus. Ample power has been provided to allow the operator to hear the processed signals in loud ambient noise environments such as concert halls or clubs or in control rooms monitoring at high volume levels. 7 2 CONTROLS & CONNECT IONS 2. 1 FRONT PANEL BASIC LAYOUT Notice that the front panel is divided into two identical Preamplifier sections Channel One and Channel Two - plus a Master section. Channel One and Channel Two are the two microphone preamplifier channels of the MP20. 80 Hz Filter L/R Assign Phantom Power Switch Phase Reverse Switch -20db Pad IDSS Control Gain Control Pan ? ?Stereo Output Control Headphone Level Control 2. 2 PREAMPLIFIER SECTION L/R Assign button assigns the signal coming through the channel to the Stereo Summing Bus output. Pan control provides constant power panning to the Stereo Summing Bus. IDSS Control selects the amount of boost (0% to 100%) applied to the even harmonic series of the signal being amplified by a channel of the MP20. [. . . ] A lighted push button is located on the front panel for turning the MP20 On and Off. 11 CONTROLS & CONNECTIO NS 2. 4 BACK PANEL BASIC LAYOUT PIN 1 GND PIN 2 High PIN 3 Low (+) (-) Cable Wiring Diagram for Input and Output XLR The Output XLR Connector is servo balanced and operates at +4dBu. The Return / Line In connector of the MP20 is provided for use in conjunction with audio process devices such as compressor/limiters and as a Line In for recording media such as tape machines, hard disc recorders, or DAT' When a device is connected to this jack, the Neutrik?Simply connect the send jack, balanced or unbalanced to the input of the external processor. [. . . ]