400RB-IV Series
Quick Start
The 400RB-IV is designed to be simple to operate. All
controls have a well defined purpose and are well
behaved. These directions will take you through the
basics and give you a good start for setting up your
sound.
1. Plug it in:At this point:
Set the power switch to Off and connect the suppliedYou should be hearing your bass quite well. You can
power cord, from the amplifier AC receptacle, to an ACuse the Volume and Master to achieve a comfortable
Quick Startpower outlet of proper voltage and power rating (seesound level. Remember:Remember:Remember:Remember:Remember: If you need more volume,
safety information on page 5 for details).turn up the Master control first.
2. Connect your cabinets:
Connect your speaker cabinets to the amplifier
outputs marked 280W AMP ONLY. Be sure not to
exceed the recommended speaker load below.
Maximum Recommended Speaker Loads:
One 4 Ohm or two 8 Ohm cabinets.
If you are using a RBH Series cabinet, set the cross-
over switch to Full Range.
3. Initial front panel control settings:
Set all EQ controls and the Boost control to 12
o?clock. The Voicing Filters should be turned all the
way down to get a flat response. Set the Level and
Master Volumes at 0. If you have a five string bass,
push the button marked String Bass in.
4. Plug in your bass:
Using an instrument cable, connect your bass to the
Input jack and press the power switch on. If you have
active tone controls on your bass, turn all of the
controls to the middle or flat position and turn the
volume all the way up. If you have conventional,
passive tone controls, turn all tone and volume
controls all the way up.
5. Level and Master Volume settings:
Set the Master Volume to 12 o?clock. Turn the Input
volume up as you play. Try not to turn it past 1
o?clock unless you want an overdrive effect. If the
yellow clip light turns on, press the -14db button in.
If it is still on, try turning the volume down on your
bass.
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ACEC
