Classe Audio C-151 Manuale utente

CLASSÉ AUDIO

C-151

REMOTE CONTROL

BALANCED PREAMPLIFIER

C-151

OWNER'S MANUAL

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-151

OWNER'S MANUAL

TABLE OF CONTENTS

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

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

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

OUTPUTS ........................................................................ 9

FRONT PANEL CONTROLS........................................ 10

WARRANTY .................................................................. 12

FEATURES AND SPECIFICATIONS ......................... 14

WARRANTY REGISTRATION.................................... 15

NPACKING & SET-UP

Your CLASSÉ C-151 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. LINE POWER

The Classé C-151 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-151 preamplifier is designed with an auto-muting circuit which engages and is indicated

by a FLASHING GREEN LED when the unit is first connected, or after an AC power failure. After 15

seconds the STEADY GREEN LED signals that the unit is in STANDBY mode (Note: MUTE is ON

during STANDBY 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 (STEADY GREEN)

again when removing A.C. line power.

CAUTION:

DISCONNECTACLINECABLEWHILEMAKINGALLCONNECTIONS."FLOATINGTHEGROUND”ORDEFEATINGTHEGROUNDONA

3-PRONGLINECORDMAYCREATEASHOCK HAZARD.CONNECTALLINTERCONNECTCABLESBETWEENTHEELECTRONICSBEFORE

CONNECTINGTHEA.C.LINECORDSTOTHEWALLOUTLETS.THISWILLREDUCETHE POTENTIAL SHOCK HAZARD. SEE

ALSOTHEWARRANTYSECTIONOFTHISOWNER'SMANUAL.

NPUTS:

The input jacks are clearly marked on the back of the C-151. The following inputs are

provided: AUX, VIDEO, CD, TUNER, BALANCED, and TAPE.

AUX INPUT:

When selected, the AUX input serves as an additional high level input, accommodating

additional sources such as VIDEO, CD, TUNER, etc..

VIDEO, CD, TUNER:

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

interchanged if so desired.

BALANCED

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-151 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 SWITCH.)

UTPUTS

The Classé C-151 preamplifier has both regular (single-ended) and balanced outputs. 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-151.

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-151 marked BALANCED

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

RONT PANEL CONTROLS

INPUT SELECTOR:

This selects one of the five inputs connected to the preamplifier, except TAPE IN (see TAPE

SWITCH below). The selector switch is silent and will prevent pulses when switching positions.

However, it remains good practice to reduce the volume control level or put MUTE to ON (steady

GREEN LED) when changing the input selection.

TAPE BUTTON:

When TAPE is not selected, the preamp will process the signal as chosen by the INPUT

SELECTOR. With TAPE input is selected, which indicated by a Red LED, the preamp will process

the TAPE INPUT signal, overriding the INPUT SELECTOR.

BALANCE CONTROL:

The custom balance control permits equal output of each channel in the center (detented)

position without additional loading to the signal. When shifted to the left or right, it merely

attenuates the opposite channel.

VOLUME CONTROL: (remote control)

The VOLUME CONTROL varies the output level of both channels simultaneously. It can be

operated from remote using the hand held control unit (see fig.3 Page 11) or manually turning the

control knob at the preamp.

MUTE BUTTON: (remote control)

Switching between PLAY and MUTE can be done by either pushing the MUTE button on

the C-151 faceplate or on the hand held remote control unit. The PLAY (or MUTE OFF) and MUTE

ON selections are indicated by the STEADY RED or GREEN LED respectively at the preamp.

When MUTE (ON) is selected, which is indicated by a STEADY GREEN LED, the outputs

of the preamplifier are completely cut off. In the PLAY (MUTE OFF) selection, which is indicated

by a STEADY RED LED, the signal is allowed to pass to the power amplifier.

NOTE: WHEN THE C-151 IS IN THE MUTE POSITION, AND THE VOLUME CONTROL

IS TURNED UP USING THE REMOTE CONTROL UNIT, THE PLAY MODE IS

AUTOMATICALLY SELECTED.

CAUTION: Make sure the preamp is in MUTE (ON) when making or changing any connections.

This includes all inputs and outputs, as well as A.C. linecord.

LASSÉ C-151 LIMITED FACTORY WARRANTY (North America only).

IMPORTANT:WARRANTYREGISTRATION,ANDACOPYOFTHE"AUTHORIZEDDEALERBILL OFSALE",MUSTBE

RECEIVEDATTHECLASSÉFACTORY(addressbelow)WITHINTWENTY (20)DAYSOFPURCHASE,TOVALIDATETHESE

WARRANTIES.

FIVE YEAR WARRANTY (ALL PARTIES)

Classé Audio Inc. warrants this preamplifier to be free from defects in materials and

workmanship for a period ofFIVEYEARS from date of manufacture provided that any claim in virtue of

this warranty be made in writing within such period. (Hand held remote control 1 year only. No

warranty for batteries).

LIFETIME WARRANTY (FIRST RETAIL PURCHASER ONLY)

Subject to all of the conditions stated herein,ALIMITEDNON-TRANSFERABLEFACTORYLIFETIME

WARRANTYISEXTENDEDONLYTOTHEORIGINALOWNERWHOFIRSTPURCHASEDTHEPREAMPLIFIERINNORTHAMERICAAT

RETAILANDWHOCLAIMSUNDERTHISWARRANTYINNORTHAMERICA(notapplicabletohandheldremotecontroland

batteries). This Lifetime warranty terminates when this preamplifier is sold by such First Retail

Purchaser to a Third Party.

"THIS LIFETIME WARRANTY DOES NOT EXTEND TO THE DIGITAL CIRCUITRY CONTAINED IN THIS UNIT, BUT SUCH DIGITAL

CIRCUITRYISSUBJECTTOTHEFIVE(5)YEARWARRANTYREFERREDTOABOVE."

In the event of failure of this preamplifier, Classé Audio Inc. will repair, recalibrate, or at our

discretion, replace the unit in accordance with these warranties providing that all the conditions

contained in these warranties are met.

In order to initiate service of any kind, it is necessary toOBTAINPRIORFACTORYAUTHORIZATION,AND

SHIPTHEUNITPREPAID. For units coming from outside Canada, contact the factory for our forwarding

address. Units shipped directly to our Canadian address from outside the country will be stopped at

the border, causing extensive delays or return of the unit to the sender.

The warranty shall be void and of no effect in the event of any of the following:

1) Operation not in accordance with this manual.

2) Accident, abuse, tampering, or unauthorized

modification, as determined by Classé Audio Inc.

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