master control functions
A. Master VOLUME Level Controls – The Left and Right Master Volume Controls adjust the output volume of the PD250 Plus. The Master controls feature notched position indicators. For the majority of applications the Passport system has been balanced to operate with these controls at their 12 o’clock notched positions. In situations where more volume is required the master controls can provide an additional 6 dB of gain when turned to the right of the center position.
Set the system up in the normal manner and adjust levels as necessary. Raise the master volume controls beyond their 12 o’clock positions only after increasing the individual channel level controls.
B. STEREO/ DUAL SELECTOR SWITCH – Allows the PD250 Plus’ power amps to be configured as stereo or
When the Dual mode position is selected with the switch, the Pan and Balance controls become inoperative (you have selected a mono setting for the output). Additionally, the internal reverb is only sent to the MAIN speaker output. Reverb is not available to the MONITOR speaker output. The reverb level sends for the MAIN mix are also controlled from the channel REV/AUX channel controls. The overall reverb level to the MAIN mix is controlled by the Reverb Master Control.
C. Master reverb – Adjusts the amount of reverb signal level sent to the mix or output. Rotating the knob clockwise increases the reverb signal sent to the main mix. When the knob is in its full counterclockwise position, there is no reverb heard in the mix.
D. System EQ – Adjusts the overall amount of frequency increase or decrease on the Passport. Rotating the knob counterclockwise increases the bass frequency response while simultaneously decreasing the high frequency response. Likewise, rotating the knob clockwise increases the high frequency response while simultaneously decreasing the bass frequency response. When the system EQ control is set at its 12 o'clock notched position, the channel response is “flat” with no frequencies increased or decreased. To set the System EQ, start with this control in the 12 o’clock notched position. Simply turn the control until things sound good!
You will notice that the input jacks and channel controls are color coded. This is done to easily identify which set of controls is associated with which input connections.
Mic / line inputs
A. Mic input jack – Plug
your microphone in here. This three pin XLR balanced female input connector is intended for input signals from low impedance microphones.
B. line input jack – Plug
your instrument in here. This 1/4" balanced input jack is suited for use with items having a line level output such
as high impedance microphones, keyboards, drum machines, outboard effects, etc. It accepts both balanced and unbalanced cables.
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