INPUT/MONO

7. EQ SECTION

The mixer’s EQ section allows shaping of the audio signal within different frequency bands. Turning one of the EQ level controls to the right enhances/amplifies the corresponding frequency range while turning them to the left lowers/attenuates the signal of the specific frequency band. Before you begin to alter the sound, all EQ controls should be set to their neutral position; that is: their detented, center position. Try to avoid setting the EQ controls to extreme positions. Usually, minor changes are totally sufficient and produce the best results in the overall mix. You should use natural reproduction as an benchmark and rely on your musically trained ear, being the best instrument to judge the sound quality. The moderate use of the MID control is the best remedy for avoiding acoustical feedback. In this frequency range, you should try to avoid excessive enhancement. Lowering the level in this band will provide you with high amplification with lower likelihood of feedback.

Use the LO control according to your pleasing, to add more “punch” to the sound of a kick drum or “body” to the vocals. Use the HI control in the same way to provide cymbals and the human voice with more treble and a more transparent sound. The MID EQ section offers separate rotary controls for the adjustment of the level (MID) and the frequency band (kHz) between 800 Hz and 8 kHz.

LO-HI EQ

MID EQ

Adjustments in the MID range are certainly the most effective way to shape the sound. As a matter of fact, determining the correct center frequency is not always as easy as it seems. Here is one method – amongst others

– how to quickly find the right setting of the parametric EQ for your application.

Note on how to adjust the parametric EQ:

1. Slightly lower the channel fader to avoid feedback.

2. Turn the MID rotary control all the way to the right (+15dB).

3. Play the desired sound source or talk into the microphone.

4. Meanwhile turn the frequency rotary control (kHz) slowly from left to right.

5. Quickly, you will detect the frequency range that is not to your liking or causing feedback.

6. Leave the frequency control in this position and turn the MID control to the left until the sound is natural or to your liking.

Enhancing a specific frequency range is a different story. In this case perform steps 1 to 4 as described above. Set the frequency rotary control to the range you want to enhance or leave it at the position where the sound is most satisfactory. Now you can use the MID control to determine the amount of alteration.

8. AUX/FX

The AUX/FX controls are used to adjust individual amounts of channel signals to be routed to the FX1 or the FX2 units. The split point of the “dry” signal is POST FADE or in other words: the signal path is split after the audio signal has passed all stages of the channel module, including the volume fader. That is the reason why the fader setting also influences the amount of the signal that is fed to the FX units. By using the AUX/FX controls, it is easy to establish an effects mix. For example, you can assign the short reverb effect of the FX1 unit to the lead vocals and a combined effect program – echo, hall, and chorus – via FX2 to the background vocals. To determine the desired intensity of each effect, you should start with the controls set at their center and make individual adjustments from there on. Also keep in mind that there are two AUX/FX1/2 send controls located within the master section which control the total amount of the FX signals. When you begin to establish the effect mix these controls should also be set at their center position.

In case you are not using the internal FX units and/or you want to connect external signal processing units, the pre-mixed AUX/FX1/2 signals are outputted via the AUX1/2 send jacks. Please monitor the PEAK LEDs in the FX1/2 channels. The indicator should only light briefly at the occurrence of high program peaks. If the indicator is constantly lit, you should lower the send levels of those channels where the program peaks occur. For further information, please read the paragraphs about the FX1/2 units.

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Electro-Voice PSX1000, PSX2200, PSX1600 owner manual EQ Section, Lo-Hi Eq Mid Eq, Aux/Fx
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PSX1600, PSX1000, PSX2200 specifications

Electro-Voice, a prominent name in professional audio equipment, has developed a series of high-performance power amplifiers known as the PSX series, which includes the PSX2200, PSX1000, and PSX1600 models. These amplifiers are engineered to deliver exceptional power, clarity, and reliability, making them suitable for a variety of applications such as live sound, installations, and portable use.

The PSX2200 is the most powerful model in the PSX lineup, offering a robust output of 2,200 watts at 4 ohms. This amplifier is designed to handle demanding audio environments, providing headroom and performance necessary for large audiences. One of its key features is the Peak х-Over Limiting technology, which ensures that the amplifier delivers maximum power without distortion during peak performance. Additionally, the PSX2200 is equipped with built-in high-pass and low-pass filters, allowing users to tailor the sound to their specific needs.

The PSX1000 represents a mid-range option that still packs a punch, delivering 1,000 watts at 4 ohms. It is designed for versatility, making it ideal for a range of sound reinforcement applications. One standout feature of the PSX1000 is its Intelligent Clip Limiting system, which automatically adjusts the input signal to prevent clipping and maintain audio clarity. Moreover, the amplifier features a rugged chassis and intuitive interface, which enhances both durability and ease of use in various settings.

The PSX1600 serves as a bridge between the PSX1000 and PSX2200, offering 1,600 watts at 4 ohms. It incorporates advanced thermal management technology, ensuring stable performance even under demanding conditions. The PSX1600 is engineered for reliability, featuring extensive protection circuitry that safeguards against issues like over-temperature, short circuits, and signal overloads. This amplifier is particularly favored for its ability to maintain sound quality during prolonged use.

All three models in the PSX series share common characteristics such as a lightweight design, durable construction, and efficient power supply systems, making them highly portable and easy to integrate into existing sound systems. The PSX amplifiers are also equipped with comprehensive monitoring capabilities, including LED indicators that provide visual feedback on power and operational status.

In summary, the Electro-Voice PSX2200, PSX1000, and PSX1600 represent a powerful trio of amplifiers that offer versatility and reliability for professional audio applications. With their advanced technologies, user-friendly features, and impressive performance specifications, these amplifiers are well-suited to meet the demands of sound engineers and audio professionals alike.
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