EFFECTS LOOP
Send and Return
The Effects Loop allows you to connect external effects with the SansAmp RPM and is
placed between the tone controls and Level controls. Connect the input of your proces-
sor to Send; output of your processor to Return. Note: When nothing is plugged into the
Effects Loop, the signal passes through from the SansAmp RPM to the Output jacks,
with both the SansAmp 1/4" and XLR Outputs receiving the same signal.
Mix 50/50 Switch
The 1/4" Send routes 100% of the SansAmp RPM’s signal through your effects proces-
sor when the 50/50 switch is not engaged. If you engage the 50/50 switch, then 50% of
the SansAmp RPM signal goes through your effects processor, and the other 50%
passes directly to the SansAmp 1/4" and XLR Outputs.
To preserve the signal integrity of the SansAmp RPM, use the Effects Loop with the Mix
50/50 switch engaged. When the SansAmp RPM is in this mode, the effects proces-
sor’s mix control should be set at 100% wet. Your relative wet/dry mixture can then be
controlled by increasing/decreasing the effects processor’s output level. NOTE: If you
experience a thin, undesirable sound or phase cancellation, the effect may not be capa-
ble of a 100% wet signal. Therefore, we suggest disengaging the Mix 50/50 switch.
UNIVERSAL OUTPUT SECTION
The output sections of the SansAmp RPM are designed to be compatible with any appli-
cation. The outputs can be used for full range (multi-track recorders, studio monitors,
P.A. systems) or limited range systems (instrument speaker cabinets for bass or guitar),
as well as
simultaneously. Note: You can compensate for different frequency responses
of speaker enclosures by using the Treble control.
1/4
"
SansAmp Output
Carries the signal from the SansAmp RPM, including any effects that are placed in the
Effects Loop.
1/4
"
Uneffected Output
Buffered output without processing. Sends a direct signal to another channel on your
amp, pre-amp, or effects chain, or it can be utilized as a tuner output.
SansAmp XLR Direct Output
Carries the signal from the SansAmp RPM, including any effects that are placed in the
Effects Loop. For recording, the SansAmp XLR Output is like having a built-in direct
box. Designed without a transformer, it provides a balanced, low-impedance output of
extremely high quality for recording or interfacing with professional-quality signal
5
processors. You can go direct to the board and get the same sound you hear coming
out of the speakers right onto tape or disc. The SansAmp circuitry not only captures the
warm, rich, natural harmonics and sweet overdrive characteristics inherent to tube
amplifiers, its speaker emulation encompasses all aspects of multiply-miked tube amp
rigs. For live gigs, you can use this output direct into the P.A. system and you won’t
need a microphone in front of your amp.
If you experience hum from the output
when there’s no instrument plugged
in, you most likely have a ground loop.
Therefore, Pin 1 (signal ground of the
SansAmp XLR) needs to be lifted or
disconnected. You can easily make a
small ground disconnect adapter by
disassembling one end of the cable
and cutting Pin 1 (the shield connec-
tion) as shown to the right.
XLR Output Level Switch
Sets the range of the signal level of the SansAmp XLR Output jack. When the switch is
in the 0dB position (engaged), the Output is in the line level range. When the switch is
in its -20dB position (disengaged), the Output is in the instrument level range. Note:
The standard output level range of the SansAmp RPM is 0dB due to the wide availabili-
ty of digital recorders, which are unforgiving to excessive input levels. This prevents
overloading the input of a digital recorder.
Uneffected XLR Output
Provides a buffered balanced output of the direct instrument signal without processing.
FOOTSWITCH IN JACK
The Footswitch In jack can be used to activate the unit. Simply connect the output of
any alternating (on/off) footswitch to the Footswitch In.
To toggle between this unit and another SansAmp RPM (or SansAmp RBI), do the same
as above and connect the SansAmp RPM Footswitch Out to the Footswitch In of the
second SansAmp RPM (or SansAmp RBI). Now you can switch between 2 sounds. For
the audio signal path, connect your bass into the Input of the first SansAmp RPM.
Connect the 1/4" SansAmp Out to the Input of the second unit. The 1/4" and XLR
Outputs of the second SansAmp RPM are then your main audio outs. (Refer to Hook-up
Diagrams on Page 7.)
6
To
FOOTSWITCH
IN of 2ND RPM
or an RBI
DRY SIGNAL
to MIXER or
RECORDER
To OUTPUT
of PROCESSOR
To FOOTSWITCH
DRY FEED to 2nd
AMP, PREAMP or PROC./
TUNER OUTPUT
LINE or INST
LEVEL IN
To MIXER of
PA or
RECORDER
To AMP,
POWER AMP, MIXER,
RECORDER or
SOUNDCARD
To INPUT of
PROCESSOR
S
SHIELD
-NEG
3
1
2
+POS
+POS
-NEG
2
3
SHIELD
1
1
2
3
GROUND (SHIELD)
+ SIGNAL (BAL)
- SIGNAL (BAL)
