Classe Audio C-103 Manuale utente

CLASSÉ AUDIO

C-103

REMOTE CONTROL

BALANCED LINE PREAMPLIFIER

C-103

OWNER'S MANUAL

C-103 Issue 2 November ‘97

CLASSÉ DESIGN PHILOSOPHY

1. REPEATED LISTENING DESIGN SESSIONS:

Fine tuning of sound by exchanging and mixing of parts (transistors, capacitors, wiring, PCB boards

etc.), and adjusting many specific operating voltages within proper engineering ranges, producing an

overall sonic recipe giving the most natural harmonic realism of music typical of instruments in a

live performance.

2. UPGRADABLE SINGLE CIRCUIT DESIGNS:

All Classé products (all preamps and all amps) share exactly the same circuit design philosophy

(excluding moving coil and moving magnet phono circuits). This means all amplifiers and all high

level circuits of the preamps benefit from the same design goals. Similar circuits are then tailored to

different power levels etc. Differences between less expensive models and more expensive models

are parts quality and compliment, power supply extravagance and the amount of filtering etc., as

well as features and packaging.

This means that for years Classé has been constantly sonically fine tuning and technically upgrading

this circuit design and its application, thus reaching a very high level of natural musical enjoyment,

as well as excellent reliability which benefits all models - least expensive, most expensive, preamps

and amplifiers alike.

3. EXTREME LONG LIFE IN REAL WORLD CONDITIONS:

Choosing the best attainable quality parts and materials combined with the advantages of the two

above-mentioned areas provides Classé owners with years of proven trouble free reliability and

musical enjoyment.

C-103 Issue 2 November ‘97

C-103

OWNER'S MANUAL

TABLE OF CONTENTS

UNPACKING & SET-UP...…................................................ 4

A.C. LINE POWER................................................................. 5

INPUTS..................................................................................... 6

OUTPUTS................................................................................. 8

FRONT PANEL CONTROLS.……............…....................... 9

FEATURES AND SPECIFICATIONS ……….................... 18

C-103 Issue 2 November ‘97

UNPACKING & SET-UP

Your CLASSÉ C-103 preamplifier has been carefully wrapped in heavy gauge plastic, packed in

semi-rigid foam and contained in a special box. To remove the unit, open and spread the top flaps of the

box. By its sides, lift out the entire unit with foam pieces intact. Remove each foam side by pulling

straight out. Remove the plastic wrap and inspect the unit for any concealed damage. Apart from this

owner's manual, please ensure the following has also been included:

1) DETACHABLE LINECORD.

2) ALLEN KEY FOR TOP COVER.

3) REMOTE CONTROL UNIT (Allen key and Batteries: AAA x 2 included).

Please report any damage or missing parts to your dealer promptly.

This preamplifier, being capable of very high gain, must be located in a position free of any

hum-inducing magnetic fields. (This also applies to turntables and interconnect cables.) Positions

adjacent to power amplifiers, A.C line filters, or regulation devices should be avoided. Ideally, a few feet

should separate the preamplifier from the power amplifier. As well, keep low-level interconnect cables

away from the power amp and separate from A.C. linecords.

Heat generated by the preamplifier is negligible. Air space around the unit need not be a

concern.

Check the Serial Number sticker on the back of the unit for the correct operating voltage.

Regardless of voltage, the internal fuse rating should be 1 AMP SLO-BLO.

C-103 Issue 2 November ‘97

A.C. LINE POWER

The Classé C-103 preamplifier has no power switch. Its low power consumption and improved

sonics from always being ON led to the omission of an ON/OFF switch. In fact, while thoroughly

musical shortly after turn-on, the preamplifier will exhibit "sonic growth" during its first 300 hours of

use.

For optimum sonic performance, you should consider the use of the optional CLASSÉ REFERENCE

A.C. LINECORD. Consult your dealer regarding this accessory.

SAFETY FEATURE:

The C-103 preamplifier is designed with an auto-muting circuit which engages during the initial

20 seconds count down and is indicated by MUTE at the right of the display when the unit is first

connected, or after an AC power failure. After the 20 seconds countdown, the MUTE signal at the right

of the display will be ON thus showing that the unit is in MUTE mode.

This feature will prevent any turn-on surges or unstable output from reaching the power

amplifier and possibly the loudspeakers. Similarly, make sure the MUTE is ON again when removing

A.C. line power.

CAUTION:

DISCONNECT AC LINE CABLE WHILE MAKING ALL CONNECTIONS. "FLOATING THE GROUND” OR

DEFEATING THE GROUND ON A 3-PRONG LINECORD MAY CREATE A SHOCK HAZARD. CONNECT ALL

INTERCONNECT CABLES BETWEEN THE ELECTRONICS BEFORE CONNECTING THE A.C. LINECORDS

TO THE WALL OUTLETS. THIS WILL REDUCE THE POTENTIAL SHOCK HAZARD. SEE ALSO THE

WARRANTY SECTION OF THIS OWNER'S MANUAL.

C-103 Issue 2 November ‘97

INPUTS:

The input jacks are clearly marked on the back of the C-103. The following inputs are

provided: REG 1, REG 2, REG 3, REG 4, BAL 1 and TAPE (see fig. 3, page 14).

REGULAR INPUTS REG 1, REG 2, REG 3 , and REG4:

These are all high level inputs sharing exactly the same characteristics, and may be

interchanged if so desired. A tape machine should only be connected to the TAPE input. See TAPE

IN and TAPE OUT below. The REG 1 input could also be fitted with an OPTIONAL PHONO

BOARD plug in module installed in the unit. A ground screw is provided adjacent to the REG 1

input jack.

INSTALLATION OF THE PHONO BOARD

1) Disconnect the A.C. line cord from the wall outlet.

2) Remove the top cover with the supplied Allen key.

3) Locate and replace the two mounting screws (see Fig.5, page 17) with the supplied stand-offs.

4) Remove jumpers J5, J6, J13 and J14 (see fig. 5, page 17). Check if extension sockets are in

place on the reverse side of the phono board.

5) Install and secure the phono board using the screws removed previously in step 3, make sure

all the connectors are properly aligned.

6) Set MM/MC (see page 18) jumpers to the desired position. All six of these jumpers are located at

the far right of the phono board (see fig .5, page 17). Please note that for ALL HIGH OUTPUT

MC Cartridges, the jumpers have to be SET AT MM.

7) Replace the top cover.

C-103 Issue 2 November ‘97

REMOVAL OF THE PHONO BOARD

1) Disconnect the line cord from the wall outlet.

2) Remove the top cover with the supplied Allen key.

3) Remove the screws securing the phono board, remove the phono board and the stand-offs,

replace the screws where the stand-offs were removed (see fig. 5, page 16) to secure the main

board.

4) Replace jumpers J5, J6, J13 and J14 (see fig. 5, page 16) on the main board. Jumpers from the

phono board can be used for that purpose.

5) Replace the top cover.

BALANCED INPUT BAL 1:

The BALANCED INPUT is a true differential high level input, wired as follows:

PIN 1: GROUND

PIN 2: POSITIVE (NON-INVERTED) SIGNAL

PIN 3: NEGATIVE (INVERTED) SIGNAL

It may be used with CD players that have a balanced output, or any other high level

balanced sources.

TAPE IN

The TAPE IN of the C-103 preamplifier should be connected to the LINE OUT or TAPE

OUT of the tape deck. The TAPE input does not appear on the selector switch. It is activated by the

TAPE switch. (See FRONT PANEL CONTROLS: TAPE BUTTON.)

C-103 Issue 2 November ‘97

IR IN (and OUT)

This will permit you to install an outboard infra-red sensor and therefore be able to control

the C-103 remotely from another room where the outboard IR sensor has been installed. These

connections will be found below the AC power inlet at the back of the unit (see fig.3, page 14).

C-103 Issue 2 November ‘97

OUTPUTS

The Classé C-103 preamplifier has both regular (single-ended) and balanced outputs (see fig.

3, page 14). Both are working at all times, and may be used separately, or simultaneously.

TAPE OUTPUT

Whatever input is selected by the INPUT SELECTOR will be fed to the TAPE OUTPUT

jacks. This should be connected to the TAPE IN or LINE IN of the tape deck.

REGULAR OUTPUTS

Simply connect your regular interconnects to the RCA output jacks marks REGULAR

OUTPUT on the back of the C-103.

BALANCED OUTPUTS

A balanced power amplifier and balanced interconnects are also required. For use with a

balanced power amplifier other than Classé, the wiring of the 3-pin XLR connectors must be wired

as follows:

PIN 1: GROUND

PIN 2: POSITIVE (NON-INVERTED) SIGNAL

PIN 3: NEGATIVE (INVERTED) SIGNAL

If the pin configuration of the power amplifier differs from above, the balanced interconnects

must be modified to accommodate the different power amp.

Having confirmed the correct connections, plug the XLR connectors of the balanced

interconnects into the locking XLR connector on the rear of the C-103 marked BALANCED

OUTPUT. (To remove the connectors, press the tab above the connector.)

Indice

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