6
Fusion 550 Bass Amplifier
Front Panel Features
Front Panel Features
1) Active/Passive Switch:
Reduces the input signal
from your bass by -10dB. Choose Active for basses
with active electronics and very high output.
2) Input Jack:
A standard ¼” input jack to plug
in active or passive basses using an instrument
(shielded) cable.
3) Channel Select Switch:
Allows you to store two
different settings via the motorized knobs. Switch
to Channel 1 and adjust your settings then switch
to Channel 2 and adjust the settings for your second
channel.
4) Gain:
Sets the preamp volume level before the
shaping filters and EQ section.
5) Frequency Select Switch:
Sets the center
frequency for the Contour control to either 500Hz
or 800Hz.
6) Contour:
Reshapes the voice of the amplifier
by cutting mid frequencies at either 500Hz or 800Hz
depending on the position of the Frequency Select
Switch.
7) Bright:
Boosts higher frequencies.
8) Deep:
Boosts lower frequencies.
9) Treble:
Active shelving type control which boosts
and cuts the high frequencies.
10) High Mid:
Active bandpass type control which
boosts and cuts at about 1kHz..
11) Low Mid:
Active bandpass type control which
boosts and cuts at about 250Hz.
12) Bass:
Active shelving type control which boosts
and cuts the low frequencies.
13) Horn Bi-Amp:
Sets the ratio between the horn
output and the master output.
14) Master:
Master volume control.
15) Power & LED:
Power on/off switch and
LED. The LED ring is blue when the amplifier is
on and flashes when the amplifier is muted via the
Mute switch. If there is an electrical fault (shorted
output, over heat) the protection circuitry will be
engaged muting the amplifier output and the LED
ring will turn red.
16) Mute:
Mutes the master and DI output of the
amplifier. The Tuner output is not affected. LED
ring will flash blue when the amplifier is muted.
TREBLE
BRIGHT
DEEP
HIGH MID
LOW MID
BASS
CHANNEL
C H 2
O F F
PA S S I V E
ON
OFF
S H A P I N G
A C T I V E E Q U A L I Z E R
CONTOUR
FREQUENCY
800 Hz
500 Hz
O N
O F F
O N
P O W E R
usion 550
Hybrid Valve Bass Amplifier
F
A C T I V E
I N P U T
C H 1
GAIN
O F F
M
U
T
E
HORN BI-AMP
MASTER
O N
O U T P U T
1 2
3
4
5
6
7 8
9
10
11
12
13
14
15 16
Summary of Contents for Fusion 550
Page 1: ...Fusion 550 Owner s Manual ...
