Electro-Voice PSX600 - Page 10

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38. STATUS INDICATOR
These indicators are to inform you about the momentary operational status of the PSX’s internal
power amplifier.
The POWER ON indicator is always lit when the PSX is in operational mode - i. e. it is switched
on. If, after switching on the power, the LED is not lit, please make sure that the PSX’s mains
cord is plugged in correctly. If this is the case and the LED is still not lit, please contact your
dealer.
The LIMIT indicator signals that your operating the PSX at the internal amplifier's limit. Frequent
blinking of the LED is acceptable, since the amplifier’s incorporated limiter prevents the
occurrence of distortion. Continuous lighting indicates that a degradation in the outputted sound
is likely to happen. In that case, the master level should be reduced.
The PROTECT indicator lights when one of the power amplifier’s extensive protection functions
- against thermal overload, HF-induction, DC at the outputs, and SOAR-protection - is activated.
When the PSX is in protect mode, the speaker outputs are muted and the inputs of the power
amplifier are short-circuited to prevent the amplifier from being damaged. In this case you should
first check if the frontal and/or rear ventilation louvres are blocked. Another cause could be, that
you have connected more than three 8ohms speaker systems per power output. Please also
disconnect the SPEAKON connectors and check the speaker cables for short circuits.
During the power-on operation, the PROTECT LED always lights for about two seconds. This is
normal. It indicates that the PSX’s protection circuitry is operational.
39. 7-BAND STEREO GRAPHIC EQUALIZER
The PSX600's integrated 7-band stereo graphic equalizer is located in the L/R master channel
section. The seven frequency bands - each providing ±10dB amplification/attenuation - offer the
possibility to optimally match the overall sound to the acoustic conditions of different locations
or shape it according to your personal taste.
The frequency ranges as well as the
characteristics of the EQ-faders are de¬
signed very praxis-oriented. In case
you intend to have a clear and highly
intelligible sound, which, as a side ef¬
fect, provides the cymbals with more
crisp, you should increase the level
setting of the 8kHz or 16kHz band a
bit. If the MIDs are nasaling, try at¬
tenuating the mid range by some deci¬
bels. If you like to provide your sound
with more bass and the kick drum with
more punch, you have to boost the low
frequency range, using the 80Hz or the
250Hz controls. On the opposite, if the
overall sound is undefined with too much bass, lowering the levels of these two frequency bands
will solve the problem. Especially when using the equalizer, you should be aware of the fact that
in most cases less adjustment provides the better result. Thus, your first choice should be to
establish the mix without involving the graphic EQ, using only the tone controls in the input
channels and see if you get a satisfactory result.
40. MASTER LED-DISPLAY
The PSX offers two 8-segment LED-chains to monitor the output levels of the L/R master signals.
The LED-meter’s indication range is 33dB, displaying the levels in dBu which are present at the
MAIN OUTPUT respectively at the POWER AMP INPUT. In other words: the meter's OdB mark
is referenced to an output signal of OdBu at the POWER AMP INPUT. Further increasing this
level, the power amplifier's maximum input level is reached at the +6dB mark, which equals an
output power of 300 watts at 4 ohms per channel. Higher levels are not displayed, since the power
amplifier’s processor limits the signal at this point which is indicated by the lighting of the LIMIT
LED in the status indicator section.
41. MASTER L + R
Level controls to adjust the output signals of the left and right main outputs (MASTER).
NOTE:
Please, make sure that the corresponding input channel faders or at least the master faders
are set to their minimal position or the STANDBY switch is engaged, before connecting an
external signal source to one of the inputs of the PSX. This will save you, your audience, and
the equipment from unnecessary stress resulting from switching or feedback noise.
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