Assessments - 1, GPA: 5
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Thus, your first choice should be to establish the mix using only the input channel EQs tosee if you can get satisfactory results. If so, you can use the graphic EQ for the AUX3 (monitor), where in most cases it is more needed. You will find the description of how to include the graphic EQ in the monitor bus later in this owner’s manual. 58. MASTER LED-DISPLAY The PSX offers two 10-segment LED ladders to monitor the output levels of the L/R master signals. The indication range of the LED-meter is 33dB, displaying the levels in dBu which are present at the EQ OUTPUT and the POWER AMP INPUT. The meter’s 0dB mark is referenced to a 0dBu output signal at the POWER AMP INPUT. Increasing this level leads to the power amplifier’s maximum input level of +6dB – equaling an output power of 500 watts at 4 ohms per channel. Higher levels are not displayed, since the amplifier’s processor limits the signal at this point. When the LIMIT LED of the status indicator section lights, this shows that the internal limiter is activated. 59. PFL MASTER When the master PFLbutton is engaged, the PRE FADER stereo master signal is routed to the headphones output. The volume of this signal is not affected by the setting of the MASTER faders. 60. MASTER L + R Level controls to adjust the output signals of the left and right main outputs (MASTER). Please make sure that the corresponding input channel fader or the master faders are set to their minimum position or the STANDBY switch is engaged, before connecting an external source to an input of the PSX. This will save you, your audience, and speakers from unnecessary stress. POWER AMPLIFIER The PSX’s PROCESSOR-CONTROLLED stereo power amplifier’s design uses bipolar output devices to provide a nominal output power of 500 watts at 4 ohms per channel. The minimal load impedance of 2.7 ohms allows the operation with a maximum of three paralleled 8 ohm loudspeakers connected to each channel. Their low distortion provides the amplifier of the PSX with outstanding sound quality that welcomes comparisons with the best professional high-end, stand-alone audio power amplifiers. The amplifier is also designed to handle the wear and tear of touring operation. It incorporates protection against thermal overload, short circuit, HF-interference or the occurrence of DC at the outputs. Further protection against dangerous back-EMF is provided by a special circuit. When the PSX is switched on, a relais control switching on of the power outputs. The internal fans run shortly on full speed, signaling acoustically that the PSX is operational. A limiter controls the initial current inrush, preventing the mains fuse from being blown during poweron. The extensive comparator circuitry constantly monitors the input and output signals and activates the internal limiters whenever a non-linear operational state is encountered. This provides reliable protection of the connected loudspeaker systems against overload and clipping. Even when the maximum input level is overridden, no distortion is heard on the speaker outputs. The amplifier also incorporates EVI Audio-patented processors to eliminate transient problems of typical sound reinforcement speaker systems and provides extraordinarily precise and powerful reproduction of low frequencies. MASTER 17 of 32 CABLING The ac power cord comes with the PSX. The quality of all other cables are your responsibility. Carefully chosen high quality cables are the best precaution to prevent problems during operation. The following wiring alternatives are recommended to provide a trouble free operation of your setup. SPEAKER CABLES From our experience as a manufacturer of loudspeaker systems we’ve learned that flexible speaker cables with a rubber jacket (10 - 16 gauge, depending on length) used in combination with NEUTRIK SPEAKON plugs and sockets, are the best choice to guarantee optimal connection of loudspeaker systems. In accordance to the corresponding diagram, the SPEAKON plugs are connected on the PSX rear panel. You can also consider the use of 4-wire cables where pins 2+ and 2- are also connected. This provides you with the possibility of using these cables with active 2-way system configurations, as well. Professional-quality speaker cables with SPEAKON connectors and all other cables, plugs, and sockets are available at your Electro-Voice dealer. LF-CABLES – BALANCED OR UNBALANCED? For all low current wiring , your best choice are balanced cables (2 signal conductors + ground shielding) with XLR-type connectors or with stereo phone jacks and plugs. The cables should be step proof, shielded, and never longer than really needed. Too many too long cables mostly lead to confusion and generate unnecessary problems. Of course, you can also connect unbalanced cables with monaural phone plugs to the PSX’s inputs and outputs and because of its superb grounding managing system in most cases no interference will occur. Still, there is a minimal risk that problems could arise a...
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