Koch Jupiter OPERATING INSTRUCTIONS
Jupiter
OPERATING INSTRUCTIONS GB
BEDIENUNGSANLEITUNG DE
GEBRUIKSAANWIJZING NL
2010 Koch Guitar Electronics
EC DECLARATION OF CONFORMITY
We, Koch Guitar Electronics, Neonweg 27, 3812 RG Amersfoort, The Netherlands, declare
under our sole responsibility that the product:
Jupiter Guitar Amplifier
to which this declaration relates is in conformity with the following harmonized standards:
* EN 50081-1 (1991) Electromagnetic compatibility. Generic emission standard.
Part 1 : residential, commercial and light industry;
* EN 50082-1 (1991) Electromagnetic compatibility. General immunity standard.
Part 1 : residential, domestic and light industrial environment;
* EN 60065-1 (1993) Household electronic apparatus.
Part 7 : Heating under normal operating conditions;
* EN 60335-1 (1988) Safety of household and similar electrical appliances.
Part 1 : general requirements.
following the provisions of Council Directive 98/336/EEC on the approximation of the laws
of the Member States relating to electromagnetic compatibility and the provisions of Council
Directive 73/23/EEC on the approximation of the laws of the Member States relating to low
voltage and electrical safety.
Amersfoort, 1 december 2010
Dolf Koch
Front panel
Cool
Instrument
10
0
Input
Gain Gain ReverbBass Mid TrebleVolume Volume Dimmer
1
Back panel
100
Fuse: 100/120V - T3.2A
220/240V - T1.6A
~
115 230
80 Watts, 50/60Hz
VAC
Hot
Boost
10
10
0
3
0
5
4
0
6
Tone Master
+5
-5
Contour
10
7
To
FX-in
Effects Loop
-5
From
FX-out
+5
-5
8
Output Power
1x16 Ohm - 35 Watt
2x16 / 1x8 Ohm - 45 Watt
2x8 / 1x4 Ohm - 50 Watt
Minimum Load 4 Ohm
Speaker Outputs Recording
50
60
25
15
5
1
+5
10
0
70
80
90
0
100%
Mains
On
Off
Jupiter
9 10
output
Function of Right-Hand
Ch2 Gain
Boost
Reverb
Speaker
Emulated
Button on Footswitch
on/off
Footswitch Channels
112
CoolHot
1
3
4
5
62
E N G L I S H
Thank you for choosing the JUPITER from KOCH. You now own a "state-of-the-art" guitar amplifier of the highest quality. The
JUPITER features the unique and totally new KOCH ATRTechnology (Authentic Tube Response) that makes the amp
sound completely like a vintage all-tube amplifier, but lesser in weight and more maintenance friendly. Unique also is the
DIMMER control for reducing the output power continuously without any loss of tone. The JUPITER has been designed and
built by people who - from their own experience as musicians - take guitar sound and quality very seriously. That is why this
product was designed and built with the utmost care in order to meet all professional standards. Our goal was not only to
design an amp which sounds fantastic and is easy to operate, but also to build it in such a way that it will serve you loyally for
many years to come. Please take your time to read this manual carefully before you switch on the JUPITER and also please fill
in the warranty card and mailit. Thanks and lots of succes with your new JUPITER !
CAUTION:
* BEFORE PUTTING INTO OPERATION READ THESE OPERATING INSTRUCTIONS
CAREFULLY.
* NO USER SERVICEABLE PARTS INSIDE.
* REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
WARNING:
* TO REDUCE THE RISKS OF ELECTRICAL SHOCK, DO NOT REMOVE THE
COVER.
* TO REDUCE THE RISK OF FIRE OR SHOCK HAZARD, DO NOT EXPOSE
AMPLIFIER TO RAIN OR MOISTURE.
* THIS APPARATUS MUST BE EARTHED.
* TUBES ARE HOT. DO NOT TOUCH DURING OPERATION.
JUPITER FRONT PANEL
[1] INPUT: Input for all types of instruments, e.g. guitars
with single-coil, humbucker or active pickups.
[2] GAIN: Controls the amount of gain in the Cool
channel.
A totally clean sound is achieved at lower settings (1-4). At
middle settings (4-7) the sound will get more juicy. At high
settings (7-10) medium overdrive occurs which will
produce more sustain and a subtle distortion. In order to
maintain the volume at the same level the Volume knob
[3] has to be turned down.
The best setting also depends on the output level of your
pick-ups. For example to get a clean sound 1-3 willwork
well for high-output humbucker pick-ups while 2-4 the best
range is for low output single coils.
[3] VOLUME: Controls the volume level of the Cool
channel.
[4] GAIN BOOST: Selects Medium Gain for Crunchy
sounds (down) or High Gain for Lead sounds (up), in the
Hot channel.
[5] GAIN: Controls the amount of distortion in the Hot
channel. A cleaner sound is achieved at lower settings (1-
3). At middle settings (3-6) the sound will get more
distorted and harmonically richer. At high settings (6-10)
high-gain overdrive occurs with more sustain and
distortion.
NOTE: High gain settings (GAIN knob "over 5" and Gain
BOOST "on") may cause squealing and/or excessive hum
and noise, due to microphonic guitar pick-ups and
insufficient screening of guitar-circuitry.
[6] VOLUME: Controls the volume level of the Hot
channel.
[7] CONTOUR SWITCH: Changes the operating
frequency of ALL Tone controls thus creating a more open
(down) or a more middy sound (up).
[8] BASS, MID & TREBLE: Classic (post-distortion)
passive tone controls for both channels.
[9] REVERB: Controls the amount of spring-type reverb
signal mixed with the original dry signal.
[10] DIMMER: This control is a unique feature and
controls the output power of the amp continously between
zero and full power, without any loss of tone.
It can be used to control the overall volume level of your
amp, but also to create power amp distortion. This power
amp distortion can be created by turning the Dimmer knob
down and turning the channel Volumes [3] [6] over 5.
[11] MAINS SWITCH: Turns AC power On (red LED on)
and Off (red LED off). When the switch is Off the amplifier
is completely shut down.
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