Operation--electronics, Power preamp – Acoustic Image Series4 User Manual

Page 3

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mute switch. The two-channel preamp has a switch that allows the
second channel to be disconnected from the main amp and
connected to a satellite power amp to create a stereo system.

The Coda, Corus and Ten2 combo amps use either the one channel or
two channel Clarus head mounted in a speaker cabinet via the
docking system. The Coda and Corus use the same cabinet and
speaker configuration: a 10 inch downfiring woofer and a 5 inch front
firing extended range driver with a presence control. The difference
between the two is the woofer. The Coda uses a poly cone woofer, the
Corus uses a paper cone woofer. This gives the Corus a somewhat
different sound, one more suited for guitar. The Ten2 has the same
amp options but uses a slightly larger cabinet than the Coda/Corus. It
has a downfiring 10 and a front firing 10 with a 2.5 inch tweeter for high
frequencies

A built-in, spring-loaded tilt mechanism allows each

cabinet type to be tilted back to better direct sound to your listening
position. The cabinets are made of an acoustically inert, high
durability, injection molded polymer material which dramatically
reduces the weight of the unit. Each unit (combo or extension cab)
comes with a fitted slip cover and shoulder strap. A padded case is
also available.

While our combos and speakers are designed to play loudly--and
clearly--enough so that you can be heard in most gigging situations,
they are not suited to playing at extreme volumes. Generating high
SPLs may require an extension cabinet like the Coda EX, Corus EX,
Ten2 EX or augmentation by a larger house system.

The instructions that follow apply to all of the products due to the many
common elements in the different units. Where there are specific
differences that are unique to one or more units, those differences are
described as necessary. The one and two channel amp heads are
described first followed by the common elements of the combo amps
(docking system, tilt mechanism, cabinet placement, etc). The
specifics of each cabinet type are then described followed by detailed
specifications of all of the models.

2

Operation--Electronics

Clarus Rear Panel

Coda, Corus and Ten2 Rear Panel

(shown in the docked position)

3

Power

Preamp

Plug the detachable AC power cord into the receptacle on the back of
the amp and into a wall receptacle. A power switch next to the AC input
turns on power to the pre- and power amps, illuminating a “power on”
indicator on the front panel of the amp.

Note

that a spare fuse is mounted inside the drawer.

All combos will work with either 100 to 120 volt, 50/60 Hz or 220 to 240
volt, 50 Hz AC power. A switch located on the rear panel selects the
appropriate voltage. Use the 115V setting for 100 to 120V operation,
use the 230V setting for 220 to 240V operation. Note that the correct
AC power cord must be used for connection to the appropriate wall
plug. If you do not have the right cord, you can buy one from an
electronics or computer store. Be sure the switch is in the correct
position for the intended application.

Combo jacks are used for the input to each channel of their preamp.
Either an XLR or 1/4 inch connector can be plugged into this type of
jack. The 1/4 inch input has a 1 megohm input impedance that is

A 6.3-amp fast blow fuse is

mounted in the drawer marked with the fuse symbol that is part
of the AC receptacle. To replace the fuse, turn off the amp,
remove the AC cord and use a small screwdriver to pry the
drawer out of the receptacle. Remove and replace the fuse.

Operation at 230 volts with the

switch in the 115 volt position will damage the unit.

Inputs

Refer to the signal flow diagram and the control panel drawings (page
6).

Voltage Switch

115/230V

AC Input

115/230 V

50/60 Hz

400 Watts

~

Speaker Output 2

min

W

Headphone

Output

Limiter

On

Power Switch

Fuse

CAUTION: TO REDUCE THE

RISK OF FIRE, REPLACE FUSE
WITH THE SAME TYPE 6.3A FAST
BLOW FUSE (F 6.3A H 250V)

CAUTION: TO REDUCE THE

RISK OF ELECTRIC SHOCK,
D O

N O T

R E M O V E

C O V E R .

NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

Voltage Switch

115/230V

Speaker Output 2

min

W

Limiter

On

Speaker Input

8

300W

W

Presence

Headphone

Output

Power Switch

Fuse

CAUTION: TO REDUCE THE

RISK OF FIRE, REPLACE FUSE
WITH THE SAME TYPE 6.3A FAST
BLOW FUSE (F 6.3A H 250V)

CAUTION: TO REDUCE THE

RISK OF ELECTRIC SHOCK,
D O

N O T

R E M O V E

C O V E R .

NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

AC Input

115/230 V

50/60 Hz

400 Watts

~

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