6. Block Diagram
7. Technical Details
●Buffer Section
1) The buffer used in the PEC-2 is a proven design that delivers superior performance in a range of Providence Custom Products.
A high-performance 15-volt DC power supply ensures broad dynamic range.
2) Although the signal level isn’t affected, the buffer “fortifies” the relatively weak guitar or bass signal so that it less susceptible to
degradation.
3) Separate buffered and non-buffered inputs and outputs are provided so that fuzz units and other effects that might exhibit a
change in tone if connected after the buffer can be connected before the buffer circuit. Refer to the “System Examples” section on
page 13 for more details.
●Series Loops
1) Loops 1 through 5 are connected in series (one after the other). Signal switching is accomplished via precision mechanical
relays. When a loop is OFF the corresponding SEND output is muted so that no signal is sent to the connected effect unit. This
eliminates the possibility of unwanted oscillation due to crosstalk when high-gain effects are used.
2) All loops are S.C.T (Single Contact True-bypass) type circuits, so when a loop is bypassed the signal passes through only a sin-
gle relay circuit for maximum reliability as well as maximum sound quality.
3) Switching noise has been significantly reduced. The switching circuits used in the original PEC-1 were re-examined and re-
designed to reduce switching noise to an absolute minimum.
●Separate Loops
1) Loops 6 through 8 are totally independent, and use the same precision mechanical relays as loops 1 through 5 for switching.
2) In addition to functioning as independent loops, the loop 6 through 8 SEND jacks can also be used as latching N.C. (Normally
Closed) switches, and the loop 6 through 8 OUT jacks can be used as latching N.O. (Normally Open) switches for remote amplifier
channel switching. These loops are completely independent, including the ground lines, so you can use them as control switches
for multiple devices without having to worry about ground loop problems.
3) The separate loops can be used as mute loops, A/B switchers, and for many other utility functions.
4) When the five series loops aren’t enough for your system, you can patch the separate loop IN and OUT jacks together to pro-
vide up to eight series loops.
5) Two of the separate loops can be used together as a stereo loop.
Refer to the “System Examples” section on page 14 for more details.
●Tuner Out
1) The signal received via the buffered input (Bu-IN) or non-buffered input (IN) is always available at this output for connection to
an electronic tuner.
2) The tuner output is buffer-isolated from the main signal chain so that a short in the tuner cable or a malfunction in the tuner
itself won’t affect the main signal.
●Output Section
1) The PEC-2 has two outputs – OUT1 and OUT2, both of which output the same signal. Dual outputs provide a versatile range of
output options.
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