Setting Of The Tube Stage; Applications; Filtering Out Unwanted Frequencies - Behringer TUBE ULTRA-Q T1951 User Manual

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2.4 Setting of the tube stage

With the settings you have achieved so far a considerable sound improvement can be made. You may not

know this, but you have already benefitted from the tube stage of the TUBE ULTRA-Q. Even when the WARMTH

control is turned fully counter-clockwise, subtle and hardly noticeable warmth and musicality is added to the

signal. You can now drastically increase the effect by turning up the WARMTH control.

With the tube stage featured in the BEHRINGER TUBE ULTRA-Q you can add the typical tube sound with the

WARMTH control. Increasing amounts of upper harmonics generated by the new UTC circuitry are then added

to the signal. This leads to more musical and transparent hights which combine perfectly with the enhancer/

exciter effect, which can perhaps even be reduced a little in favor of the warm tube sound. You can monitor the

amount of WARMTH that is added with a glance at the WARMTH meter.

One of the most important tasks of the TUBE ULTRA-Q is the “notching out” of problem frequencies. With

“notching” or “peaking” we describe the specific attenuation of single frequencies or frequency bands. A notch

filter produces an effect that is the opposite of a band-pass filter. Specific frequencies or ranges can be

targeted like hum, rattle or feedback frequencies. Resonance in a room or microphone can be eliminated

effectively.

TUBE ULTRA-Q T1951

Fig. 2.1: Various filter qualities

Fig. 3.1: Typical notch function

3. APPLICATIONS

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