Noise Gate - Prolude Amplification BHN450 User Manual

5.1.7 Noise Gate

Automaticly softens down the amplifier during the pauses of your performance. Eliminates hum, buzz or
single coil noise, which are audible when you stop playing. You can adjust the treshold with the
potentiometer. The sounds below this treshold are recognized as noise and soften down.
Setting the treshold:
1. Set up your sound and volume on the amplifier
2. Switch on the Noise Gate with minimal treshold / this is the most sensitive setting
3. After some soft playing damp the strings
4. If you recognize the elimination of noise, you are finished
5. If you do not recognize it, turn up the treshold a little and go back to point three
Wrong setting:
If the threshold is set too low the Noise Gate will not be activated to soften the noise when you stop playing.
If the threshold is set too high the softening comes too early, thus cutting the sustained sound.
Note:
The Noise Gate will only work properly at good Gain setting.
Normally if there is no noise generating effect or stomp box / like overdrive or distortion / in the signal path
there is no need to turn up the treshold level, just switch on the Noise Gate!
5.1.8 Active Equalization
Four band active equalization system with Low, Low-Mid, semi-parametric Mid and High controls. If you
leave the knobs centered, you get a linear, uncoloured sound.
You can bypass this feature with the second button of the footswitch.
5.1.9 Comp
Dynamic compressor. At the lowest position of the potentiometer this feature is inactive. By turning up it
produces more gain and simultanously brings down the threshold level, where the limitation starts.
Generally, the softer playing gets more gain, than the louder. The limitation area is feed back by the blue
LED placed left to the Comp knob.
5.1.10 Volume
Controls the overall volume of the Speaker Outputs. The Line-Out, the Phone and FX-Send are not
affected by this potentiometer.
5.1.11 Mute
Mutes the Speaker Outputs, the Phone and the Line-Out, but the FX Send is not affected. If the button is
pressed, the red LED is bright.
Note:
This Mute LED gives you additional information too, see section 5.1.16.
5.1.12 Phone
Phone output drives stereo headphones / in mono mode /. Its volume can be controlled by the Gain
potentiometer.
5.1.13 Foot Sw.
Footswitch input. You can connect a two-buttons footswitch here via a stereo jack cable.
You can activate the Shape or Valve Loop function with the first button and bypass the Active Equalization
by the second one.
Note:
To set the function of the first button see section 5.4.8.
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