ELECTROCOMPANIET EC 4.8 MKII Manuel utilisateur

EC 4.8 MKII

Balanced Reference Preampliﬁer

Owner's Manual

ENGLISH

Welcome to the world of Electrocompaniet!

We thank you for choosing an Electrocompaniet high-end product.

At Electrocompaniet we are relentlessly focused on developing

audio equipment that is capable of bringing the fabulous

experience of the concert hall into the very heart of your home.

Our aim when developing and testing new products is to ensure

that the wonderful richness of tone and every nuance of feeling

and emotion of a piece of music is delivered to you just as the

artist intended.

We continually strive to give you the very best musical listening

experience available whatever your preferred musical genre.

Sincerely yours,

The Electrocompaniet team

Unpacking the EC 4.8 MKII

Immediately upon receipt of the EC 4.8 MKII, 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 pc. Electrocompaniet EC 4.8 MKII Reference Preamplifier

• 1 pc. AC main cord

• 1 pc. Inspection card

• 1 pc. Owner's manual

• 1 pc. IR Remote control

• 2 pcs. AAA Batteries

Set up procedure

Before connecting the EC 4.8 MKII to the AC Power outlet, check that the main volt-

age indicated on the rear panel corresponds to the line voltage in the country were

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 4.8 MKII contains delicate circuits that are sensitive to magnetic stray fields.

The unit should not be placed near power voltage 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 setups hum may occur when you connect the radio, VCR or TV to your system.

The problem is caused by DC voltage offset coming from your antenna system. Please

contact your cable network operator.

How to connect your system

Please read this page carefully and use rear panel illustrtation at page 5 as reference.

INPUTS

Single-ended RCA input and operation

There are three sets of single ended inputs labeled AN3, AN4 and HT/AN5.

All inputs are similar regarding sonic performance.

HT/home theater mode (Volume

control does not affect the signal). AN5 - normal input operation mode affected by the

volume control.

Unused inputs may be shorted to ground, using a RCA shorting plug.

Balanced operation

There are two sets of balanced inputs labeled AN1 and AN2. Connect the right chan-

nel input to the inputs on the right side of the EC 4.8 MKII and the left channel inputs

on the left side of the EC 4.8 MKII.

OUTPUTS

REC OUT

Rec outputs are used for recording. The source you listen to will be monitored through

this output. The volume control setting does not influence the record output.

BALANCED OUTPUT

The balanced output is a variable output, dependent on the volume control setting and

MUTE function. These outputs control 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 EC 4.8 MKII will monitor the vital functions on the amplifiers.

SPAC Multi is reserved for future use.

Never use shorting plugs in outputs.

How to power up your system

You should always power up your system in the following way: Signal sources

(CD player, streamer, etc.) first, then the EC 4.8 MKII. Allow a 30 seconds warm-up

before you turn on the amplifier.

When switching off your system

In daily operation, put the EC 4.8 MKII in standby mode by holding the Mute button

on the remote control for1-2 sec. To turn it completely off, press the power button on

the front panel. When turning off your whole system, start with the amplifier, then the

EC 4.8 MKII and then the signal sources.

1. Balanced analog right output

2. Balanced analog AN1 right input

3. Balanced analog AN2 right input

4. Single-ended analog AN3 right input

5. Single-ended analog AN4 right input

6. Single-ended analog REC right output

7. Single-ended analog HT/AN5 right input

8. Balanced analog left output

9. Balanced analog AN1 left input

EC 4.8 MKII Rear panel illustration

1 2 3 4 5 6 78 9 10 111213 14 15 16 17 18

10. Balanced analog AN2 left input

11. Single-ended analog AN3 left input

12. Single-ended analog AN4 left input

13. Single-ended analog REC left output

14. Single-ended analog HT/AN5 left input

15. USB for Remote charge

16. Mini USB for software upgrade

17. SPAC connection

18. Mains power input

Front panel overview

The main switch is located in the centre of the lower part of the front panel ( 5 ).

The four buttons on the right-hand side of the front panel is used to adjust the volume

and select the input source. Use the up and down buttons to adjust the volume, and

the left and right buttons to select input source

Navigator

Button Function Description

1 Volume Up Increases the volume level

2 Volume Down Decreases the volume level

3 Select source left Selects the next source to the left

4 Select source right Selects the next source to the right

5 Power switch Turns the preampliﬁer on and off

Input sources

Audio

Source Display

Text Description

Analog 1 AN1

Balanced source connected to AN1 input

Analog 2 AN2

Balanced source connected to AN2 input

Analog 3 AN3

Single-ended source connected to AN3 input

Analog 4 AN4

Single-ended source connected to AN4 input

HT/AUX HT/AN5

Single-ended source connected to HT/AUX input

Using the remote control

When using the remote control, the front end of the remote control should be pointed to

the front panel of your EC 4.8 MKII. A free line of sight is required between the remote

control and the infrared sensor on the front panel.

Remote control overview

1. Mute - on/off.

Standby mode - hold mute1-2 sec. to set

the preampliﬁer into standby mode.

2. AN 2 - switch to Analog 2 input.

3. AN 4 - switch to Analog 4 input.

4. VCR - Dimming the display.

5. AN 5 - switch to Analog 5 input.

6. AN 1 - switch to Analog 1 input.

7. AN 3 - switch to Analog 3 input.

8. Volume UP.

9. Volume DOWN.

10.SACD - switch to Analog 1 input.

11. HT - switch to a Home theater input.

Replacing batteries

Use 2pcs AAA or LR03 batteries.

Observe correct polarization when

inserting batteries. Please remove

batteries when the remote is not used

for a prolonged period of time.

IR Remote control codes

( page 8)

AN 2 AN 4 AN 3 AN 1

AN 5

VCR

IR Remote control codes

RC5 codes are denoted as xx.yy where xx is 5 bit adress and yy is 6 bit command/

data. All numbers are in decimal.

Key label Code Type Code Hex

MUTE/STANDBY RC5 16.13

CD / AN2 RC5 16.20

TUN / AN4 RC5 16.21

VCR - DIM RC5 16.61

AUX / AN5 RC5 16.60

DVD / AN1 RC5 16.57

TAPE / AN3 RC5 16.56

VOLUME UP RC5 16.16

VOLUME DOWN RC5 16.17

SACD / AN1 RC5 16.59

HT RC5 16.58

Technical specifications EC 4.8 MKII:

INPUT CONFIGURATIONS

XLR input: 1 = ground 2 = positive 3 = negative

RCA: Shield = ground Center = positive

RCA to XLR adapter: Shield = ground Center = positive

OUTPUT CONFIGURATIONS

XLR output: 1 = ground 2 = positive 3 = negative

Never use shorting plugs in outputs.

The following technical data were measured on randomized test objects and are typical

data. All measurements are made at 120V / 240V // 50Hz / 60Hz

MEASUREMENTS SINGLE ENDED BALANCED

Input impedance 47 kOhm 47 kOhm

Output impedance 100 Ohm 100 Ohm

Maximum gain 6 dB 6 dB

Minimum gain - 111 dB - 111 dB

Noise floor (0 dB gain) < -130 dB < -130 dB

THD (1V in, 1V out) -120 dB -130 dB

Max input +- 15Vp-p +- 30Vp-p

Max output +- 30Vp-p +- 30Vp-p

Frequency response 1 – 200 kHz 1 – 200 kHz

Channel separation > 120 dB > 120 dB

Power consumption (no load or signal): 30 W

The EC 4.8 MKII is DC coupled from input to output.

WEIGHT & DIMENSIONS:

Weight: 11.3 kg – 24.9 lbs

Width:470 mm – 18.5 inches

Depth: 372 mm – 14.64 inches

Height: 80 mm – 3.14 inches

*Specifications are subject to change without further notice

IF SERVICE IS NEEDED

Your dealer will have all relevant information regarding the service centers in your area,

and will ensure that your unit is serviced with minimum delay. It is our general policy to

have your unit returned to you within five working days. This is an average time and can

vary locally, depending on the workload at that particular service station. If, for some

reason there are no service facilities available in your country, contact Electrocompaniet support

first. If requested to do so by technical personell, please ship the unit to the following address:

EC Living AS,

Breivikveien 7,

N-4120 Tau,

Norway

Web: www.electrocompaniet.com

Service department: support.electrocompaniet.com

The end user is responsible for all shipping charges, insurance, re-import and dutycharges.

When shipping a product to the factory for service, always include the following:

1. A sales slip or other proof of purchase if repair is claimed under warranty.

2. A proforma invoice with value of goods, stating that the EC 4.8 MKII is returned to Norway

for repair.

3. An accompanying letter describing faults, symptoms, or problems with the unit.

4. Always ship the unit in its original carton and packaging material to prevent damage in

transit.

Electrocompaniet will not cover damages incurred in transit. If you require further information

concerning the operation of the unit, or if you have any questions related to service, please do

not hesitate to contact your dealer or your national distributor.

User Manual Updates Online

An updated version of the User Manual may be available online at the Electrocompaniet

web site. Occasional updates are needed to reflect new features added to the player since

the user Manual was printed. As future firmware updates bring in new features and func-

tions, the online version of the user Manual will be updated accordingly.

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