Basic Operations 4 .0 - VocoPro FEATHER AMP FA-500 Owner's Manual

Basic Operations 4 .0

Adjusting Gain 4.1
Once all the connections are made, power on the Feather Amp and set the LEFT & RIGHT gain knobs to a safe level. Power
on and start playback on your source audio device . Use the LEFT
& RIGHT gain knobs to increase or decrease the input gain. Turn
clockwise to increase gain, and counter-clockwise to decrease gain .
We recommend setting the volume level on your audio source device
to an optimal level before noise (hiss/hum) occurs, then setting the
gain on the Feather Amp to reach your desired volume output . For
standard LEFT/RIGHT stereo audio connections, the LEFT gain knob
controls the LEFT channel, while the RIGHT knob controls the left
channel .
Bridge-tied load (BTL) 4.2
Bridge-tied load (AKA bridge mode) is a configuration that distributes all the Feather Amp's power to one channel. This is
useful for situations where you need to only power a single speaker, but do not want to lose half the power . In BTL mode the
amplifier will provide 450W RMS @ 4Ω or 225W RMS @ 8Ω .
To enable BTL mode, first power down the Feather Amp . Find the bridge button on the fan panel, and push it to the IN position .
BTL mode requires that you change the speaker configuration . For BTL mode, connect a single speaker to the positive
speaker terminals as shown in the diagram below .
Note that if you have a stereo source audio signal, the LEFT/RIGHT channels will be mixed into a mono signal. You can still
adjust the volume of the LEFT/RIGHT mix by using the LEFT and RIGHT gain knobs on the face panel.
Speaker Impedance
BRIDGE
SPEAKER OUTPUTS
BRIDGE
RIGHT LEFT
LEFT
Output
8 450W
4 225W
IN
OUT
14
RIGHT