Lehle Parallel L Operating Instructions

Lehle Parallel L
Operating instructions
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The Lehle Parallel L is a compact and versatile line mixer to meet demanding tonal standards. The Parallel L mixes the signals from effect units into
the original signal, either before the amp or inserted into its effects loop. Send and return levels can be adjusted separately, and level relative to the
original signal optimally selected using the mix controller. The send and return paths can, of course, be operated both balanced and unbalanced.
The great dynamic range of the Parallel makes it possible to mix into the guitar signal a 19" studio effect with its low-impedance line level, for
example, or to insert effects pedals level-adjusted via the amp's effects loop.
Thanks to their JFET technology, the Parallel's inputs can handle both high-impedance signals from electric guitars and basses or acoustic
instruments, and low-impedance signals from keyboards and active electric guitars and basses with a broad output range extending from 20 to
100,000 Hz.
To exploit the dynamics of tube amplifiers to the full, the input voltage is rectified from the power supply socket, then filtered, stabilized and doubled
to 18V.
The Lehle Parallel is available in two versions, the Parallel L, featuring a True-Bypass switch with gold-plated contacts, and the Parallel M, a straight
mixer.
Technical data
Weight:
Length:
Width:
Overall height:
Voltage range:
Max. power take-up:
Frequency response:
Distortion:
Impedance, Input:
Impedance, Return:
Impedance, Output:
Impedance, Send:
Signal-to-noise ratio:
Max. level:
Max. gain/ loss
Send and Return:

General Description

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13
10
12
11
11
Screw
Schraube
Bottom-
Washer
plate of switch
U-Scheibe
Bodenplatte
Spacer
des Schalters
Distanzstück
Base-plate
Grundplatte
Lehle Gitarrentechnik · Burkhard Georg Lehle · Im Hundsbusch 11 · D-46562 Voerde · tel +49.2855.8500-70 · fax -71
Lehle Parallel L!
527 g (without battery)
10 cm (3.9")
12,2 cm (4.8")
4,8 cm (1.9")
9 - 20 V AC or DC, or 9V PP3 battery
37 mA with battery, 80 mA with an extern. power supply
20 Hz - 100 kHz
0,003 % at 1kHz, 0 dBU
1 MOhm
1 MOhm
100 Ohm
100 Ohm
-91 dB at 1kHz, 0 dBU (A-weighted)
5,3 V RMS (approx. 16 dBU)
+/- 15 dB
6 5 4 3 2 1
1 Input socket
YConnect your instrument or the Send output of your amplifier to this socket.
The Lehle Parallel L has a high-impedance input and can therefore accept
both low-impedance and high-impedance signals of all types, so that you
can plug in virtually any instrument you like: electrical and acoustic stringed
instruments, such as electric guitars and basses, acoustic guitars and all
types of stringed instruments, and also the low-impedance signals from
computers, keyboards and mixers.
If you want to use your Lehle Parallel L to inject an external effect into the
serial effects loop of your amplifier, connect the Send output of the amplifier
9
to this input socket.
Note:
8
In battery mode, the battery circuit is automatically activated when a cable is
connected to the input socket so always "pull the plug" when you've finished
your session, or are taking a longer break!
2 U/B-mode switch
Set this switch correspondingly, depending on whether you want a balanced or
Y
an unbalanced signal at the Send output (3).
For an unbalanced signal on the Send socket (3), set the gold-contact switch
to the "U" (for "unbalanced") position, and to the "B" (for "balanced") for a
balanced signal.
The mode switch should be set to "U" if normal (pedal-type) effect units are
connected to the Send socket (3), since these devices generally have an
unbalanced input. Mixers, stage boxes and A/D converters generally have
balanced inputs, so you should then set the mode switch to "B".
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Lehle Gitarrentechnik