Lehle Sunday Driver SW Operating Instructions

Lehle Sunday Driver SW

Operating instructions

Thank you for choosing the Lehle Sunday Driver SW!
The Lehle Sunday Driver SW is a compact-format high-end preamp for all types of electrical and acoustic instruments - a preamp that enables
electric guitars and basses, acoustic guitars, and also other stringed instruments (such as violins, cellos and double basses) to realize all of their
musical potential.
The Lehle Sunday Driver SW, with its high-quality JFET technology, provides two operating modes. In D (= Driver) mode, the input signal is
amplified with zero modification, to eliminate the signal loss that long cable routings and/or effects chains can cause. The signal remains powerful
and clear, and retains its dynamics. Mode S (= Sunday) multiplies the input impedance by four, bringing out previously inaudible details and, as
gain increases, imparting to the guitar a characteristic and unmistakable warmth. There is no distortion at any stage, and the signal always stays
clean, even at a maximum gain setting of 15 dB. Thanks to its studio-standard signal-to-noise ratio of better than -100 dB, the Lehle Sunday Driver
SW is totally free of background noise. To exploit the dynamics of tube amplifiers to the full, the input voltage is also rectified from the power supply
socket, then filtered, stabilized and doubled to 18V.
In OFF status, the Lehle Sunday Driver SW provides two different modes of operation - in TB (= True Bypass) mode, the input and output are linked
with zero losses to one another via a switch with gold-plated contacts. True Bypass mode is the best option for a small set-up with short cable
routings and with a treble-booster or a classical fuzz pedal is looped in after the Lehle Sunday Driver SW. The line-driver function, located at the
start of the train or in an effect chain, is the better solution for long cables and for complex effect board configurations. Switch the Lehle Sunday
Driver SW to TS (= True Sound) mode, and it is active as a buffer, without amplifying or modifying the signal in any way. In this mode, the Lehle
Sunday Driver SW operates as a totally neutral line-driver. The Bypass mode option enables the Lehle Sunday Driver SW to integrate ideally into any
set-up, whether as a battery-operated stand-alone unit, or in an existing pedal board.
Technical data
Weight:
Length:
Width:
Overall height:
Voltage range:
Max. power battery take-up:
Frequency response:
Distortion:
Impedance, Input D:
Impedance, Input S:
Impedance, Output:
Signal-to-noise ratio:
Max. level:
Max. gain:
5
6
7
8
9
9
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/ Germany · tel +49.(0)2855.8500-70 · fax -71
378 g (without battery)
9 cm
9,6 cm
4,8 cm
9 - 20 V AC or DC, or 9V PP3 battery
9 mA (OFF), 28 mA (ON)
20 Hz - 100 kHz (in mode D)
0,001 % at 1kHz, 0 dBU
1 MOhm
4 MOhm
150 Ohm
-105 dB at 1kHz, 0 dBU (A-weighted)
5,7 V RMS (approx. 17 dBU)
15 dB
4 3 2 1
support@lehle.com www.lehle.com
1 Input socket
Connect your instrument to this socket
Y
The Lehle Sunday Driver SW processes signals from electric and acoustic
stringed instruments, such as electric guitars and basses, Western guitars,
classical guitars and all kinds of stringed instruments. This compact preamp
has no trouble balancing out low signal levels, and eliminating sound losses
caused by long cables and trebley pick-ups.
Note:
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 you want to take a longer break!
2 S/D-selector switch
Use this switch to select the sound mode you want
Y
This gold-plated-contact switch enables you to change between the two
sound modes. Mode D for Driver selects neutral amplification, and the
incoming signal is amplified at the input impedance of a guitar amp, of 1
MOhm, efficiently eliminating sound losses caused by long cables and/or
effects cascades. The signal remains strong and clear, and retains its
dynamics. In mode S for Sunday, the input impedance is multiplied by four,
to 4 MOhm, making previously unsuspected details suddenly audible and
imparting an unmistakable and characteristic warmth to the sound when the
gain knob is turned up.
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Lehle Gitarrentechnik