EQ Tips for tweakers only, About Q, QBandwidth

	MPX G2 Parametric EQ: Gain
Fc=1000Hz	Q=1.0	Gain=+24dB, +18dB, +12dB,
		+6dB, 0dB, -6dB, -18dB,
		-24dB, -36dB, -72dB

MPX G2 Parametric EQ: Q

Fc=1000Hz Gain=±18dB	Q=0.1, 0.3, 0.5, 1.0, 2.0,
	4.0, 6.0, 8.0, 10.0

MPX G2 Parametric EQ: Shelf

Fc=1000Hz Gain=+10dB	Q=0.1, 0.2, 0.5, 1.0, 2.0,
	4.0, 10.0

The Effects and Parameters

EQ Tips (for tweakers only)

About “Q”

Q is a measure of the sharpness of an EQ curve. The larger the Q value, the sharper the curve. In some situa- tions it is convenient to think of Q in terms of bandwidth in octaves. Some examples:

QBandwidth

0.1approximately 6 1/2 octaves

0.4approximately 3 octaves

0.7approximately 2 octaves

1.4approximately 1 octave

2.9approximately 1/2 octave

4.3approximately 1/3 octave

5.8approximately 1/4 octave

7.2approximately 1/5 octave

8.7approximately 1/6 octave

10.0approximately 1/7 octave

There are mathematical limits to how small the Q value can be in MPX G2 EQ effects. For any given frequency, the Q must be greater or equal to the frequency divided by 10,000. For example if the frequency is 5kHz, the actual Q value won’t go below 0.5. (The MPX G2 will allow you to dial in lower values, but the actual Q will not go below the mathematical limit.)

For most shelving applications, Q should be set very low (Around 0.2). As you increase the Q, the filter be- comes peaky, but a dip also devel- ops just outside the passband. For many applications, a bandpass or band cut filter with a moderate Q and a low (or high) center freq will prove sonically superior to the shelving fil- ter.

Making a Low Pass Filter

To make a two-pole low-pass filter, start with a high shelf, and set Gain to -72 (effectively off). This creates a low pass filter with a corner frequency at Fc. A Q of 0.7 makes a flat pass- band. Higher Q settings produce a peak at Fc, and lower Q settings produce a droop.

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MPX G2 specifications

The Lexicon MPX G2 is a powerful multi-effects processor designed for musicians and audio engineers seeking a wide range of high-quality sound processing options. Known for its pristine sound quality, the MPX G2 combines a variety of effects into one compact unit, making it an essential tool for live performances and studio work alike.

One of the main features of the MPX G2 is its extensive library of effects. It offers a wide diversity of effects such as reverb, delay, modulation, dynamics processing, and more. With over 250 preset programs, musicians can choose from various configurations that suit different styles and genres. The simplicity of the interface makes it easy to navigate through these presets, helping users quickly find the perfect sound.

The MPX G2 incorporates advanced digital signal processing (DSP) technology to deliver exceptional audio fidelity. This technology ensures that signal integrity is maintained throughout the processing chain, providing a clean and polished output. The unit is engineered to minimize latency, allowing for real-time performance without noticeable delay, which is crucial in live settings.

Moreover, the MPX G2 features an intuitive user interface with a bright, easy-to-read LCD display. It provides direct access to comprehensive editing options, enabling users to tailor effects to their specific needs. The onboard controls, including knobs and buttons, allow for rapid adjustments during performance, ensuring that musicians can react quickly to changing conditions on stage.

Another characteristic of the MPX G2 is its flexible connectivity options. The processor includes standard 1/4-inch inputs and outputs, as well as stereo configurations for more complex routing. MIDI capabilities enhance its compatibility with other gear, allowing for seamless integration into various setups. This makes it an ideal choice for both solo artists and larger ensembles.

In addition to its rich palette of effects, the MPX G2 supports true stereo processing, ensuring that stereo images remain intact. This feature is particularly beneficial for creating lush, expansive soundscapes, typical in genres like ambient, rock, and classical.

In summary, the Lexicon MPX G2 stands out due to its exceptional sound quality, versatile effects library, and user-friendly interface. Its advanced DSP technology, flexible connectivity, and true stereo processing capabilities make it a top choice for musicians looking to enhance their sound with professional-grade effects. Whether on stage or in the studio, the MPX G2 delivers the reliability and creativity needed to inspire and impress.

Lexicon MPX G2 manual EQ Tips for tweakers only, About Q, QBandwidth, Making a Low Pass Filter

Models: MPX G2