-Hey Now -
So here's the thing....
I tried out a Demeter VTBP-201s pre amp with a Crest Pro Lite 2 DSP (bridged) at my last gig, going into my Greenboy F212 and my f-deck HPF-3.
However it started clipping at normal stage volume, but only on the high notes, which I thought was weird. Usually the low notes eat up the power & volume.
Anyway, the ACL™ LED came on and the amp would not produce the high note(s) I played.
I admit I am not familiar with the Crest Pro Lite DSP and all it's available settings.
My dilema is, should I tweak the Pro Lite settings, turn off it's internal filters, and run it totally without any of it's features.
Perhaps the f-deck and the Crest internal filter was not behaving well together...?
The following is copied from the Crest manual....
"The filter types available for the high-pass and low-pass filters are:
Off- No filter
BW-12 dB Butterworth filter with 12 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
BW-18 dB Butterworth filter with 18 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
BW-24 dB Butterworth filter with 24 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
LR-24 dB Linkwitz-Riley Filter with 24 dB per octave slope. -6dB at corner frequency.
LR filters combine for a flat response at the corner frequency.
It is generally a good idea to use a high-pass filter for all loudspeakers."
I had the amp at the BW-24 db setting....
----also from Crest:
"A channel's ACL™ LED will light at the onset of clipping. If the LEDs are flashing quickly and intermittently, the channel is just at
the clip threshold. A steady, bright glow means the amp is clip limiting or preventing severely clipped waveforms from reaching the
loudspeakers. During initial power-up the ACL LED will light."
So, whadda ya think....?
So here's the thing....
I tried out a Demeter VTBP-201s pre amp with a Crest Pro Lite 2 DSP (bridged) at my last gig, going into my Greenboy F212 and my f-deck HPF-3.
However it started clipping at normal stage volume, but only on the high notes, which I thought was weird. Usually the low notes eat up the power & volume.
Anyway, the ACL™ LED came on and the amp would not produce the high note(s) I played.
I admit I am not familiar with the Crest Pro Lite DSP and all it's available settings.
My dilema is, should I tweak the Pro Lite settings, turn off it's internal filters, and run it totally without any of it's features.
Perhaps the f-deck and the Crest internal filter was not behaving well together...?
The following is copied from the Crest manual....
"The filter types available for the high-pass and low-pass filters are:
Off- No filter
BW-12 dB Butterworth filter with 12 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
BW-18 dB Butterworth filter with 18 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
BW-24 dB Butterworth filter with 24 dB per octave slope. -3dB at corner frequency.
Butterworth filters have a flat frequency response in the pass-band.
LR-24 dB Linkwitz-Riley Filter with 24 dB per octave slope. -6dB at corner frequency.
LR filters combine for a flat response at the corner frequency.
It is generally a good idea to use a high-pass filter for all loudspeakers."
I had the amp at the BW-24 db setting....
----also from Crest:
"A channel's ACL™ LED will light at the onset of clipping. If the LEDs are flashing quickly and intermittently, the channel is just at
the clip threshold. A steady, bright glow means the amp is clip limiting or preventing severely clipped waveforms from reaching the
loudspeakers. During initial power-up the ACL LED will light."
So, whadda ya think....?
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