Electrocompaniet EC4.9 User Manual

EC 4.9

Unpacking the EC 4.9

Immediately upon receipt of the EC 4.9, inspect the carton for possible damage during shipment.
The carton and packaging have been designed to provide the safest possible protection
for transport of your preamplifier.
Unpack the unit carefully. Save all packaging materials for future shipment.

The contents of the carton

1 pcs Electrocompaniet EC 4.9 (preamplifier)
1 pcs AC mains cord.
1 pcs inspection card.

Set up procedure

Before connecting the EC 4.9 to the mains, check that the main voltage indicated on the
rear panel corresponds to the line voltage in the territory where you intend to use the unit.

How to avoid damages

Do not under any circumstances connect or disconnect equipment when power is turned on.
The design of the RCA plug generates a huge transient when inserted.
Connecting or disconnecting equipment with the power on can result in severe damage
to both speakers and amplifier.

How to avoid noise problems

The EC 4.9 contains delicate circuits that are sensitive to magnetic stray fields.
The unit should not be placed near main transformers, TV sets, etc. Care should also be
taken regarding placement of the interconnect cables. Do not run interconnect cables in
parallel with main cords or speaker cables. Keep interconnect cables as short as
possible.

How to avoid possible antenna problems

In some set-ups hum may occur when you connect the radio, VCR or TV to your system.
The problem is caused by DC voltage coming from your antenna.
Please contact your cable network operator.

How to connect your system

See illustration 1 and illustration 3

Inputs

Single- ended operation:
All inputs are similar regarding sonic performance.
Unused inputs may be shorted to ground, using a RCA shorting plug.

Balanced operation:
There are three set of balanced inputs.
Two set for 6 channel operations, labelled Input 1 and Input 2, and one set for 2 channel
operations labelled CD.
Note that the two 6 channel inputs may also be used for 2 channel operations.

Outputs

REC:
Rec outputs are used for recording.
The source you listen to will be monitored through this output.
The record function is not influenced by the volume control setting.

Never use shorting plugs in outputs.

LINE OUT:
The line out is a variable output, dependent on the volume control setting and MUTE function.
These outputs controls the power amplifier(s).

SPAC:
These contacts are used to communicate with power amplifiers AW 2x120 and AW 3x120.
Connect a SPAC Com cable (sold separately) from SPAC A to one of the amplifier and SPAC B to
the other. When these cables are connected to the amplifiers the amplifiers will automatically switch
to mono mode when running 2 channel sources.
SPAC Multi is reserved for future use.

DATA:
Connect an USB cable from the DATA port to a PC to upgrade the software on the EC 4.9.

REMOTE CHARGE:
Connect the remote ECT2 (sold separately) to this port to charge the remote.