Compact 603
user manual
Contents Page
1. Introduction 3
2. Important safety instructions 4
3. Controls and connections 5
3.1 Front side 5
3.2 Rear side 6
4. Starting up 7
4.1 Cabling and switching-on 7
4.2 Level adjustment 7
5. Functional characteristics 7
5.1 Equalization 7
5.2 Eects 8
5.3 Footswitch 8
5.4 Phantom powering 8
6. Technical specications 9
7. Circuit diagram 10
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1. Introduction
Welcome to B!
Thank you for choosing the Compact 603.
The Compact 603 is a professional, compact and
powerful amplier system. Especially developed
for the enhancement of acoustic instruments it is
nonethe-less suitable for other instruments, even
electrical ones.
Our design concept was focused on the singer-/
songwriter who requires outstanding reproduction
of his/her instrument and vocals yet needs a handy
unit with gigbag which is easily portable (even via
public transport). We sought to produce an amp that
would accomplish this while astonishing audiences
as well as sound-engineers through excellent sound
and professional instrumentation.
All AER-systems are subtly dynamically controlled,
which ensures absolute reliability in full load operation despite strikingly small sizes and little weight.
Read on and have fun using your Compact 603!
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2. Important Safety Instructions
The following guidelines shall help minimize the risk of injury through re or electric shock.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
The lightning ash with
the arrow head symbol
within an equilateral
triangle is intended to alert the
user to the presence of unisolated
´dangerous voltage´ within this
product´s enclosure that may
be of sucient magnitude to
constitute a risk of electric shock
to persons.
1. Carefully read these safety notes before you
use the device!
2. Keep these safety notes in a safe place.
3. Pay attention to all warnings, instructions and
additional texts on the unit.
4. This device was only designed for operation
under normal climatic conditions (temperate
climate).
5. Do not install or use your amp in close proximity to water or if you are wet yourself.
6. Do not subject your device to sudden and
severe temperature changes. This could cause
moisture condensation inside the unit, which
could damage it. In the event of moisture
condensation allow the device to dry out completely before use.
7. Use your amp in a safe place where nobody can
step on cables or trip over and damage them.
8. Pay attention to an unhindered air circulation
around the amp, never obstruct the air vents or
grilles.
9. Always pull the mains plug before cleaning
your amp or when left unused for a long period
of time. Use only a dry cloth for cleaning. Avoid
the use of detergents and do not let any liquids
seep into the unit.
10. Use only the right fuses with the same current
rating and trigger characteristic as replacements. Never mend fuses! Pull the mains plug
before replacing a fuse. Should a fuse blow
again after a short while, the device needs to
be checked.
11. Never install your amp close to devices with
strong electromagnetic elds such as large
mains transformers, revolving machines, neon
illumination etc. Do not lay signal cables parallel to power current cables.
12. There are no user-serviceable components
inside the unit. To avoid the risk of an electric
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The exclamation point
within an equilateral
triangle is intended to
alert the user to the presence
of important operating and
maintenance (servicing)
instructions in the literature
accompanying this product.
shock, the unit must not be opened. All maintenance, adjustment and repair works should
be carried out by qualied sta only. Any
unauthorized tampering will void the 2-year
warranty.
13. In keeping with the EMV regulations screened
cables with correctly tted connectors must be
used for all signal connections.
14. Always use an earthed power supply with the
correct mains voltage. If you are in doubt about
the power outlet ground, have it checked by a
qualied technician.
15. Cable up your amp only when it is powered o.
16. This device should be installed near the socket
outlet and disconnection of the device should
be easily accessible. The mains plug of the
powersupply shall remain readily operable.
Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles and the point where they exit from
the apparatus.
17. This product may cause permanent hearing
loss. Do not operate for long periods of time
at a high volume level or at any level that is
uncomfortable. If you experience any hearing
loss or ringing in the ears, you should consult
an audiologist.
18. The product should be located away from heat
sources such as radiators, heat registers or
other products that produce heat.
19. Do not place any open sources of re, like
candles, on the device.
20. Care should be taken so that objects do not fall
onto the device and liquids are not spilled into
the enclosure through openings. Ensure that
no objects lled with liquids, such as vases, are
placed on the device.
21. Do not place this device on an unstable cart,
stand, tripod, bracket or table. The device
may fall, causing serious injury to you and
serious damage to the device itself.