Tech 21 SANSAMP PSA-1.1 - Manual (Page 7)

REAR PANEL
INPUT 2 SECTION
I NPUT 2 JACK
1/4-inch, 4.7megOhm. This high impedance input is designed with piezo pickups in mind to provide
maximum output and dynamics. Plugging into Input 2 lets you match the SansAmp PSA’s input cir-
cuitry to the signal level being fed into it, assuring the best signal-to-noise ratio and least distortion.
This input is ideal for rack and patch-bay applications, especially if you use other signal processors or
multi-track recorders before the SansAmp PSA. Note: When you plug into the front panel Input,
the rear panel Input 2 is disconnected. Also, you can set the Input Level Selector Switch to its
0dB position when you plug in extra-hot signals, such as the output from active bass guitars.
L EVEL SELECTOR SWITCH
This switch lets you connect the SansAmp PSA to a wide variety of equipment with a variety
of signal levels. It has two positions:
0dB position. This engages the input pad. Set the switch in this position when sending a
line-level signal into the SansAmp PSA. When the switch is in this position, the signal
coming into the unit is padded down by 10dB.
-10dB position. When the input pad switch is disengaged (at its -10dB setting), the rear
panel Input 2 is optimized to receive an instrument level signal. In this position, Input 2’s
sensitivity is exactly the same as the front panel’s Input.
EFFECTS LOOP
E FFECTS S END
Sends the SansAmp PSA’s signal to processors. When nothing is plugged into the Effects Loop,
the signal passes through from the SansAmp PSA to the Output jacks, with both left and right
Output jacks receiving the same signal. Note: Effects Loop Send is muted in bypass programs.
M IX 50/50 SWITCH
The 1/4" Send routes 100% of the SansAmp PSA’s signal through your effects processor when
the 50/50 switch is disengaged. If you engage the 50/50 switch, then 50% of the SansAmp PSA
signal goes through your effects processor, and the other 50% passes directly to the 1/4" and
XLR Outputs.
To preserve the signal integrity of the SansAmp PSA, use the Effects Loop with the 50/50 switch
engaged. When the SansAmp PSA is in this mode, the effects processor’s mix control should be
set at 100% wet. Your relative wet/dry mixture can then be controlled by increasing or decreasing
the effects processor’s output level.
10
R IGHT RETURN
When using a mono effects processor, plug the processor’s output into the SansAmp PSA’s
Right Return. This will route the signal to both pairs of left and right Outputs.
L EFT R ETURN
This is one of two stereo returns for the Effects Loop. If your signal processor has only one out-
put (mono), then plug it into the Right Return.
UNIVERSAL OUTPUT SECTION
Another aspect of the technological advancement of the SansAmp PSA is that its output sections
are physically compatible with any application. The outputs can be used for full range (multi-track
recorders, studio monitors, P.A. systems) as well as limited range systems (guitar or bass speaker
cabinets). Note: You can compensate for different frequency responses of speaker enclosures by
using the High control.
1/4" O UTPUT J ACKS
These left and right 1/4" jacks carry the signal from the SansAmp PSA. This includes any
effects that are placed in the Effects Loop. The Output level switch (0dB/-10dB) lets you inter-
face the SansAmp PSA with a variety of line and instrument level inputs, including recorders
and mixers requiring low-level signals, signal processors, and power amps.
1/4" O UTPUT L EVEL S WITCH
Selects the Output level’s range. When in its 0dB position (engaged), the Output is at line level.
When the switch is in -10dB position (disengaged), the Output is at instrument level.
XLR O UTPUT J ACKS
The SansAmp PSA’s two XLR Outputs are designed without transformers to provide a low-
impedance output of extremely high quality for recording or interface with professional-quality
signal processors. (It includes any effects that are placed in the Effects Loop.) XLR and 1/4"
Outputs may be used simultaneously. Minimum output impedance is 600 Ohms.
XLR O UTPUT LEVEL SWITCH
Sets the range of the signal level sent out of the XLR Output jacks. When in the 0dB position
(engaged), the Output is in the line level range. When the switch is in its -10dB position
(disengaged), the Output is in the instrument level range.
Note: The standard output level range of the SansAmp PSA is 0dB due to the wide availability
of digital recorders, which are unforgiving to excessive input levels. This prevents overloading
the input of a digital recorder.
11