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3 Send socket
Connect the input of your effect unit or the input of your target device (e.g. mixer, computer, etc.) to this socket.
Y
If you're using the Lehle Parallel L for parallel effect loops, connect the Send socket to the input of the effect unit. The Send socket can also be used
as a DI output in order to route the signal to the input of a mixer or an A/D converter or sound card. The intensity of the signal available on the
Send socket can be controlled using the appurtenant controller (8).
4 Phase switch
The phase of the return signal can be reversed here, if necessary.
Y
Phase cancellations can occur if you are mixing the original signal with the return signal - this sound is usually felt to be too "thin". Reversing the
phase using the gold contacted phase switch solves this problem. Simply move the switch to the position at which the sound is best - this is, of
course, ultimately a question of individual taste.
5 Return socket
Connect the output of your effect unit or the output of your second device (e.g. mixer, computer, second pick-up on a guitar, etc.) to this socket.
Y
If you're using the Lehle Parallel L for parallel effect loops, connect the output of your effect unit to the Return socket. The Return socket can also be
used as an input for other signal sources - the output from a computer sound card, for example, or from a signal processor.
If the Lehle Parallel L is being used to mix two pick-ups from one instrument, the Return socket can also be used as the input for the second pick-up.
The Return socket has a 1 MOhm input impedance. This means that even very weak signals, such as those generated by piezo and magnetic pick-
ups can be transmitted without loss of sound.
The Return input can handle both balanced and unbalanced signals, and switches automatically to corresponding the signal type, depending on
whether a stereo jack-plug (TRS) for balanced or a mono jack-plug (TS) for unbalanced signals is connect. The Return input's sensitivity can be
adjusted using the controller (10).
6 Output socket
Connect your amplifier or the Return input from the serial effects loop of your amplifier to this socket.
Y
The device connected here will mostly be an amplifier, but can also be a mixer, a stage box or a sound card. The signal mixed from the input and
the return signal is available here. The mixing ratio can be controlled using the MIX controller (9).
Connect the output socket to the Return input of your amplifier if you want to use the Lehle Parallel L to inject an external effect into your amplifier's
serial effects loop.
7 External power supply
Connect a power suppy with a voltage of 9 to 20 V here, when needed.
Y
The Lehle Parallel L can be operated optionally with a 9 V PP3 battery or from an external power supply, which should provide not less than 9 and
not more than 20 Volts. Polarity is not important here, and both AC and DC sources can be used. The supply voltage is internally rectified, filtered,
stabilized and then doubled to 18 V. A connector for the Lehle Sunday Driver's power-supply socket is included in the pack; if desired, this connector
can also be soldered on to your power-pack mains cable.
The cover must be unscrewed and removed to permit installation of a 9V (PP3) battery. To do this, simply unscrew the four screws holding the cover,
and draw the cover off.
Note:
The Lehle Parallel L automatically switches via a gold-plated relay to battery operation if power supply voltage drops below 9 Volt. So always make
sure that your Lehle Parallel L has a charged battery if you want the extra security of knowing that it will continue to operate trouble-free even if the
power supply fails.
8 Send signal controller (S)
You can set the level of the Send signal here.
Y
The input signal is available 1:1 on the Send input when this controller is set to its center position, Turn the controller to the left to decrease the
signal by up to 15 dB, or to the right, to boost the signal by up to 15 dB.
9 MIX controller
Here you can set the mixing ratio for mixing of the Input and Return signals.
Y
The two signals have equal strength when this controller is in its center position. Turn the MIX controller to the left to increase the Return signal and
decrease the Input signal. The Input signal is increased, and the Return signal decreased when you turn the controller to the right.
10 Return signal controller (R)
Set the level of the Return signal here.
Y
The signal on the Return input is transmitted 1:1 when this controller is in its center position. Turn the controller to the left to decrease the signal by
up to 15 dB, or to the right, to boost the signal by up to 15 dB.
11 Base and fixing
You can use the fixing screws supplied with the Lehle Sunday Driver to fix it to a base plate (or to a pedal board, for example)
Y
Thanks to its ready-to-go fixing system, the Lehle Sunday Driver can be mounted without difficulty on a base plate. To do this, undo the four housing
screws and detach the cover. Then fix the device base to a base plate using the two screws, the washers and the spacers supplied. Replace the cover
and tighten the four housing screws - done!
12 True-Bypass switch
Use this switch to select the original or the MIX signal.
Y
This button actuates a True-Bypass switch with gold-plated contacts inside the Lehle Parallel L, via a virtually indestructible switch mechanism.
13 Switching-state LEDs
You're listening to the MIX if the LED is showing red
Y
The high-intensity LEDs under the lenses clearly indicate the switching-state, even under stage lighting.
If you're using the Lehle Parallel L with a power pack, a green LED will illuminate to show True-Bypass mode. In this case, you are listening only to
the signal directly present on the input. If you now press the True-Bypass switch (12), the color of the LED will change to red. You're now listening to
the MIX of the Input and the Return signal. When you're operating on batteries, the LED only shows red for the MIX. No LED illuminates during True-
Bypass mode, so your batteries will last longer.
Lehle Gitarrentechnik · Burkhard Georg Lehle · Im Hundsbusch 11 · D-46562 Voerde · tel +49.2855.8500-70 · fax -71
support@lehle.com www.lehle.com
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