Gold Supporting Member
For those Fromel Shape EQ experts out there....what does the "Q" control do?
Q means "quality factor" and refers to the bandwidth affected by a filter. It's the ratio of the center frequency to the bandwidth.
Say you have a bandpass filter set to 83 Hz (low E string). A Q factor of 0.1 means 83/830, so the bandwidth is +/- 415 Hz. A Q factor of 10 means the bandwidth is +/- 4.15 Hz.
In musical terms a higher Q filter selects a smaller range of notes.
Controls from left to right.
Bass - cut/boost - center dent at zero
Switch under Mid Freq changes from shelf to parametric sweep (last 60 or so)
Mid - Cut/boost - center dent at zero
Treble - cut/boost - center dent at zero
Switch under Treble changes from buffered bypass or true bypass
The Fromel Shape EQ does not feature a knob controlling Q;
Yea - this is what I thought and was describing in my post. I actually had just looked up this very same post! IIRC it matches the manual, but that is at home.
So the knob in question selects the specific peak of the mid frequency to boost rather than the width of the peak.