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FAQ

Can I use DAVID X with a digital piano?

How do I make the connections to use a second 

speaker or amplifier?

What  is  the  best  way  to  connect  a  delay  or 

other external effect to my DAVID X?

Will my condenser mic work with the DAVID X’s 

24 V phantom power?

DAVID  X’s  6”  woofer  is  not  designed  for 

very  high  sound  pressure  levels,  but  used  at 

reasonable volume levels, the amp can basically 

be employed with any instrument and can also 

be used as a compact personal monitor. Send 

the  signal  to  the  PA  via  the  DI  OUT  so  that 

DAVID  X  also  becomes  a  preamp,  letting  you 

control the sound you are sending out.

The easiest way to connect an external speaker 

(or a second active amp) is via the LINE OUT 

or DI output.

If  you  only  have  one  instrument  connected 

to  your  amp,  you  can  use  the  master  section 

INSERT. For this connection you will need a Y 

insert  cable.  Another  way  of  connecting  the 

external effect is in series: the effect must be in 

the chain just before the signal enters the amp 

(guitar —> pedal —> amp).  

DAVID X provides way more than the nominal 

24  VDC,  but,  since  it  is  not  actually  48  VDC 

we cannot legally label it P48. However, most 

modern  microphones  will  work  just  fine.  For 

more  technical  information,  please  read  the 

following  Diary  article  on  the  SCHERTLER 

website  (

https://secure.schertler.com/en_US/

thediar y?d=2017-09-22&sn=JOPSEOL8

Summary of Contents for DAVID X

Page 1: ...M A N U A L W W W S C H E R T L E R C O M DAVID X COMBO AMP FOR ACOUSTIC INSTRUMENTS M A D E S W I S S U S E R V1 EN ...

Page 2: ...ACOUSTIC X AMPS ...

Page 3: ...se seeking no compromise acoustic instrument amplification An effective system for practice and home studio use DAVID X s size also makes it the most portable and flexible SCHERTLER amplifier model The three inputs can accept two instruments or an instrument and a vocal microphone plus a stereo playback device SCHERTLER amps feature a sophisticated Class A preamp with no integrated circuits and No...

Page 4: ...s and a third grounding prong The wide blade and third prong are provided for your safety If the supplied plug does not fit your mains socket consult an electrician for replacement of the obsolete socket Do not expose your amplifier to rain or any other water even in small amounts Do not use the amplifier near water Avoid spilling drinks or any other liquids on the amplifier Do not operate your am...

Page 5: ...dback never point microphones directly at a loudspeaker high levels of distortion impulse noises loud pops that can occur when a device is switched on off connected to or disconnected from a system MAINTENANCE AND REPAIR Your amplifier can be carefully cleaned as necessary using a dry cloth Do not use water When cleaning do not use any solvents such as acetone or alcohol These could damage the amp...

Page 6: ... tip When using an amplified speaker distorted input signals should be avoided at all cost in order to prevent potential damage to the speaker While playing your instrument carefully set the preamp gain level by turning up the GAIN control until the OVERLOAD LED begins to blink At this point turn the gain back down slightly Now set the MASTER Volume between 30 and 60 With the gain and master level...

Page 7: ...your audio device before using the amplifier 2 4 10V This supplies the jack connector with 10 VDC for powering electret microphones 2 5 GAIN This variable gain preamplifier adjusts the sensitivity level to ensure the best possible processing of the mic instrument signal through the channel It is important that this input level is set and optimized in the best way to achieve the cleanest sound poss...

Page 8: ...el on the DI OUT 4 3 LOW CUT When active this filter cuts all frequencies below 120 Hz ideal if you play an instrument that generates aggressive low frequencies It enables you to connect a subwoofer and prevent unwanted vibration and possible damage to your DAVID X 4 4 MASTER Controls the overall system volume 4 5 POWER LED Indicates when the amplifier is switched ON 4 6 LINE OUT This unbalanced j...

Page 9: ...OR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH THE SAME TYPE AND RATING OF FUSE 5 1 5 2 5 3 REAR PANEL 5 1 POWER ON OFF System ON OFF switch 5 2 GROUND LIFT This switch connects and disconnects the ground 5 3 MAINS POWER CONNECTION Connection to mains Fuse carrier 220 230 V 50 Hz 60 Hz T 1 6 A L 250 V 240 V 50 Hz T 1 6 A L 250 V 120 V 60 Hz T 3 15 A L 250 V 100 V 50 Hz 60 Hz T 3 15...

Page 10: ...ACOUSTIC X AMPS SIGNAL FLOW WARM 3B EQ REVERB MASTER GAIN TO DI OUT TO LINE OUT TO AMP PHANTOM P24 XLR JACK 10V INSERT RESON 3B EQ GAIN JACK STEREO IN LOW CUT OL OL 10V ...

Page 11: ... impedance DI Out connector DI Out level DI Out impedance Phantom Power nominal Stat Power 10 VDC Effect Preamp Stand mounting Available versions 11 kg 29 5 x 25 5 x 35 5 cm 45 Hz to 20 kHz 92 dB 120 W pure analog power amp 112 dB 1 dome tweeter 6 woofer 12 mm birch BB laminated Two way bi amplified Bass reflex XLR 52 dB 4 7 kΩ 1 4 jack unbalanced 47 dB 820 kΩ 1 8 jack stereo 10 dBu 40 kΩ On maste...

Page 12: ...d bootstrap technology inputs allow you to connect any kind of audio signal including electric bass and double bass However David X s 6 speaker might not be at its best on low frequencies so perhaps consider the JAM X similar features but with an 8 speaker Please also bear in mind that instruments which generate aggressive low frequencies such as bass guitars will produce greater energy in the low...

Page 13: ... control the sound you are sending out The easiest way to connect an external speaker or a second active amp is via the LINE OUT or DI output If you only have one instrument connected to your amp you can use the master section INSERT For this connection you will need a Y insert cable Another way of connecting the external effect is in series the effect must be in the chain just before the signal e...

Page 14: ...ACOUSTIC X AMPS ...

Page 15: ...e applicable here TRADEMARKS The SCHERTLER name and logo are registered trade names trademarks of SCHERTLER SA Switzerland All SCHERTLER products use proprietary technology and are covered by one or more worldwide patents DISCLAIMER All information and technical specifications published here are based on data that was available at the time of publication SCHERTLER is however constantly aiming to i...

Page 16: ...A C O U S T I C A U D I O P RO D U C T S S W I S S M A D E VIA BEROLDINGEN 18 6850 MENDRISIO SWITZERLAND T 41 0 91630 0710 F 41 0 91630 0711 INFO SCHERTLER SWISS WWW SCHERTLER COM ...

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