User Manual

Micro-VR Bass Guitar Amplifier
6
The Rear Panel
14. IEC POWER INPUT CONNECTOR: This
is where you connect the supplied AC
power cord.
Before plugging in the power
cord, make sure that the voltage
selector switch [15] is set to the same
voltage as your local AC mains.
15. VOLTAGE SELECTOR SWITCH:
Make sure the switch is in the
correct position for your local AC
mains voltage before you plug in the AC
power cord. Use a small flat screwdriver
to slide the switch if required.
16. VENTILATION: Make sure that the ven
-
tilation openings are not obscured in any
way. This will allow the flow of cooling
air to the power amplifier’s heatsinks.
17. SPEAKER OUTPUTS: These 1/4" TS
output jacks supply speaker-level power
to the speaker cabinet. The rated power
output is 200 watts rms into 4 ohms.
The two identical outputs are wired in
parallel, and you can use either one, or
use both. Make sure the total speaker
impedance load is 4 ohms or greater.
For example, you could connect:
Two 16 ohm speakers (an 8 ohm load),
Two 8 ohm speakers (a 4 ohm load)
or one 4 ohm speaker.
Use speaker cables with 1/4" TS
ends to make the connections.
Do not use instrument cables as these
may overheat.
18. EFFECTS LOOP RETURN JACK: Use
this 1/4" TS unbalanced input to return
the processed line-level output of an
external effects processor (for example).
The processor could be fed by signals
from the effects loop send [19].
19. EFFECTS LOOP SEND JACK: Use this
1/4" TS unbalanced output to send a
line-level output to an external effects
processor (for example). The output here
is affected by all controls except the vol
-
ume [8] and the limiter switch [9].
Use the loop return jack [18] to feed the
returned processed signals back into the
power amplifier.
20. XLR LINE OUT JACK: Typically, you
would connect this balanced output to
the balanced input of an external mixer,
or a recorder. In this way, you do not
have to mic the speaker cabinet in order
to add it to the main mix, or to record.
The output is not affected by the volume
control [8].
This output can connect to external
power amplifiers, or powered loudspeak
-
ers, as long as they have their own input
controls to adjust the volume level.
Balanced connections allow long cable
runs to be used, as hum and noise
pickup in the line is minimized.
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