3 TS/TB-selector switch
4 Output socket
External power supply
6 Switching-state LEDs
Gain controller
8 True-Bypass switch
Base and fixing
Y
Y
Y
Y
Y
Y
Y
Use this switch to select the bypass mode you want
Connect your target device here
Connect a power-pack for a voltage of 9 to 20 V here, when needed
If the LED is showing red, the gain controller and S/D-selector switch are active
Use the gain controller to adjust the intensity of the preamp from a slight refresh sound level up to a powerful boost
Use this switch to select the original or the signal with more gain.
You can use the fixing screws supplied with the Lehle Sunday Driver SW to fix it to a base plate (or to a pedal board, for example)
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 for when 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 – equivalent to Mode D with the gain pot turned all the way to the left.
For instance, an amplifier, a mixer panel, a stage-box or a soundcard.
The Lehle Sunday Driver SW can be operated optionally with a 9 V PP3 (block) 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) block battery. To do this, simply unscrew the four screws holding the
cover, and draw the cover off.
The Lehle Sunday Driver automatically switches via a gold-plated-contact relay to battery operation if power supply voltage drops below 9 Volt. So
always make sure that the Sunday Driver 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.
The high-intensity LEDs under the lenses clearly indicate the switching-state, even under stage lighting.
A green LED will illuminate to show Bypass mode, if you're using the Lehle Sunday Driver SW with a power pack. If you now press the foot switch
(8), the color of the LED will change to red.
When you're operating on batteries, the LED only shows red. No LED illuminates during Bypass mode, so your batteries will last longer.
The gain control knob consists of black anodized aluminium and is recessed into the housing. It can be easily turned by placing your fingertip in the
top depression, with the great advantage that, thanks to the recessed design, the setting cannot be inadvertently disturbed on stage or during
transportation. The Lehle Sunday Driver SW with its JFET-based circuitry performs two functions simultaneously, reducing signal impedance, on the
one hand, and boosting the signal, on the other.
When the gain controller is at the left-hand stop (in the 0 or seven o'clock position), it operates purely as an impedance converter. With the knob in
this position, the sound is refreshed, in order to balance out sound losses that can occur when long cables or effects cascades are used.
A buffer starts to amplify the signal when the gain controller is turned further in the clockwise direction. Tube amplifiers, preamps and distortion
pedals can thus be driven slightly beyond the limit. To make sure that the resultant overdrive distortion sounds harmonious, the Lehle Sunday Driver
SW in S mode amplifies less treble as Boost rises. The result can range from a pleasant sound, with no shrillness, up to a silky warm, harmonious
overdrive distortion on tube amplifiers.
This button activates a Bypass switch with gold-plated contacts inside the Lehle Sunday Driver SW, via a virtually indestructible switch mechanism. In
OFF status, the Lehle Sunday Driver SW provides two different modes of operation, the TB (= True Bypass) and the TS (= True Sound) mode. In ON
state, the LED (6) shows red, the gain controller is active and you can choose between the sound modes D (= Driver) and S (= Sunday).
Thanks to its ready-to-go fixing system, the Lehle Sunday Driver SW 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!
Note:
The Lehle Sunday Driver SW as an impedance converter:
The Lehle Sunday Driver as a booster:
5
7
9
Lehle Gitarrentechnik · Burkhard Georg Lehle · Im Hundsbusch 11 · D-46562 Voerde · tel +49.(0)2855.8500-70 · fax -71
-2-
/ Germany
·
