Solid EQ

Four bands with two response families

SOLID EQ provides low, low-mid, high-mid and high bands. The outer bands can act as shelves or bells; the middle bands have adjustable bandwidth. Separate high- and low-pass filters handle spectrum boundaries without consuming one of the four tonal bands.

Broad tone or selective correction

The E/G switch changes how the curves behave, not just their appearance. G uses steeper outer shelves and gain-dependent middle-band widths, becoming broader for smaller boosts or cuts. E uses gentler shelves and maintains the middle-band width across gain settings, making narrow, low-gain corrections more predictable. Choose that behavior first, use the filters to remove unwanted extremes, then shape the important body and presence regions. Compare alternatives with A/B rather than assuming that a larger boost is automatically better.

Source: Manual, “The Main Interface,” pp. 10–12.

Frequency bands

The LF, LMF, HMF and HF sections each have a frequency control and a dB boost/cut control. Frequency locates the band's action, while dB determines its strength; centered dB leaves that band unchanged. Start with the band nearest the problem or desired emphasis rather than applying compensating boosts across several bands.

Bell, available on LF and HF, switches the outer bands from shelving to bell curves. Shelves change the tonal balance beyond a frequency region; bells target a more bounded area. Q, available on LMF and HMF, adjusts their width. In this interface the manual describes turning Q clockwise as widening the band and counterclockwise as narrowing it, so follow the actual control behavior rather than assuming a conventional knob direction.

E/G curve

Curve G gives steeper LF/HF shelves and varies middle-band width with gain: smaller changes affect a broader area. Curve E has gentler outer shelves and constant middle-band width, permitting selective correction even with small gain adjustments. Revisit frequency and Q when changing this switch, because otherwise the same displayed settings can affect a different portion of the spectrum.

Boundary filters and comparison

HPF removes low-frequency material below its operating region; LPF removes high-frequency material above its region. They are separate from the four bands. Use them deliberately so a perceived improvement in clarity does not come at the expense of essential weight or air.

The header provides preset recall, saving and A/B comparison. Copy one state into the other before making an alternate curve or bandwidth choice, then compare with the source playing in context.

Source: Manual, “The Menu Bar,” pp. 8–10; “The Main Interface,” pp. 10–12.