Goldmund TELOS 250 Manual de usuario

USER MANUAL

USER MANUALUSER MANUAL

USER MANUAL

GOLDMUND TELOS 250+

Universal Power Amplifier

Thank you for purchasing the GOLDMUND TELOS 250+.

You have acquired the best Universal Power Amplifier ever made for professional and

domestic uses.

Please take some time to read this manual. It will provide you with useful information to

make your pleasure of listening to the TELOS 250+ even higher.

NTRODUCT ON

NTRODUCT ONNTRODUCT ON

NTRODUCT ON

GOLDMUND TELOS 250+ – Universal Power Amplifier

Goldmund was founded in 1978 and has ever since been dedicated to the accurate

reproduction of sound and image.

At Goldmund, we strive to lead in the creation, development and manufacture of the

industry’s most advanced technologies, including audio and video systems, home -

networking and music distribution.

The guiding principle at Goldmund is to produce a precise sound with the least possible

loss of quality through the different stages. Goldmund will never adopt a technology before

it is sufficiently developed to satisfy the high quality standards we set. This is why

Goldmund has often rejected mainstream technologies and developed its own.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 3

Table of Contents

Table of ContentsTable of Contents

Table of Contents

1 PREL M NAR ES

PREL M NAR ESPREL M NAR ES

PREL M NAR ES

1.1UNPACK NG

2 AMPL F ER LOCAT ON & COOL NG

AMPL F ER LOCAT ON & COOL NGAMPL F ER LOCAT ON & COOL NG

AMPL F ER LOCAT ON & COOL NG

3 L NE VOLTAGE ADJUSTMENTS

L NE VOLTAGE ADJUSTMENTSL NE VOLTAGE ADJUSTMENTS

L NE VOLTAGE ADJUSTMENTS

4 CONNECT ONS

CONNECT ONSCONNECT ONS

CONNECT ONS

5 AMPL F ER CONTROLS

AMPL F ER CONTROLSAMPL F ER CONTROLS

AMPL F ER CONTROLS

5.1 AUTO-POWER OPERAT ON

5.2

MANUAL OPERAT ON

5.3

OTHER D SPLAY

6 6

6 SOUND QUAL TY OPT M ZAT ON

SOUND QUAL TY OPT M ZAT ONSOUND QUAL TY OPT M ZAT ON

SOUND QUAL TY OPT M ZAT ON

1111

6.1 WARM-UP SON C EFFECT

6.2 THE GOLDMUND “MECHAN CAL GROUND NG”

6.3 SPEAKER POLAR TY

6.4 MA N L NE PHASE NVERS ON

7 7

7 SAFETY FEAT U R E S

SAFETY FEAT U R E SSAFETY FEAT U R E S

SAFETY FEAT U R E S

1313

7.1PROTECT ON AGA NST DC

7.2 PROTECT ON AGA NST HF OSC LLAT ONS

7.3 OVERHEAT NG PROTECT ON

8 MA NTENANCE

MA NTENANCEMA NTENANCE

MA NTENANCE

1515

9 TECHN CAL DATA

TECHN CAL DATATECHN CAL DATA

TECHN CAL DATA

1616

GOLDMUND TELOS 250+ - Universal Power Amplifier - 4

W A R N N G !

W A R N N G !W A R N N G !

W A R N N G !

No connection or manipulation must be done

before reading these instructions. Damage to

the amplifier may result if the following

instructions are not consciously understood

and applied.

These extremely high quality amplifiers

possess new technical features which are a

necessity for accurate sound reproduction in

the best audio systems.

Only careful installation and use can provide

the satisfaction you are expecting.

The installation instructions must be carried

out in full and the mentioned precautions

taken to get the expected result and to avoid

impairing the amplifier’s performance.

MPORTANT

MPORTANTMPORTANT

MPORTANT

PLEASE DO NOT CONNECT ANY CABLES OR

MOVE ANY PARTS BEFORE READING THE

FOLLOWING INSTRUCTIONS.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 5

PREL M NAR ES

PREL M NAR ESPREL M NAR ES

PREL M NAR ES

Please read the following instructions very carefully. This high-precision unit will provide the

best signal possible to your speaker thanks to its unique technology.

For exacting technicians, musicians, and all high-fidelity music purists who demand the

very best in musical reproduction, we strongly recommend the use of top quality analog

pre-amplifier or acoustic processor such as the Mimesis 20H or Mimesis 32.5 with analog

or digital input.

The connection between the analog and digital sources and the acoustic processor as well

as between the pre-amplifier and the power amplifiers are critical. Ultra low reflection

interconnect cables are absolutely mandatory in analog and precise impedance SPDIF

cables in digital to keep the time integrity that the acoustic processor is designed to

provide. In all typical cases Goldmund recommends using the special Goldmund Lineal

interconnect and digital cables.

1.1 UNPACK NG

You will find in the GOLDMUND TELOS 250+ box:

- The amplifier

- The power cord

- This manual

Unpack the above-mentioned parts carefully, keep all packaging for future use.

WARN NG

WARN NGWARN NG

WARN NG

If you need to return the TELOS 250+ to the factory or to your local representative for a

warranty repair; please note that it must be repacked in the original packaging.

This packaging has been designed specifically to protect your TELOS 250+ in transit. Use

of alternative packaging is likely to result in damage, invalidating warranty cover.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 6

AMPL F ER LOCAT ON & COOL NG

AMPL F ER LOCAT ON & COOL NGAMPL F ER LOCAT ON & COOL NG

AMPL F ER LOCAT ON & COOL NG

The GOLDMUND TELOS 250+ amplifier, as all high quality amplifiers generates a large

amount of heat when driven at high levels and must be vented properly. It is mandatory to

allow a proper cooling of the heat sinks. Do not put temperature sensitive equipment on top

of the amplifier.

Due to its weight, and to maximize the effect of the built-in "Mechanical Grounding"

construction, the TELOS 250+ is better located on the floor. Other very strong supports

can be used if they offer rigid transmission to the floor.

The TELOS 250+ is built on four very hard conical feet to ensure proper vibration

transmission to the amplifier support. This evacuates all detrimental vibrations inside the

amplifier, following the famous GOLDMUND "Mechanical Grounding" principle.

If you use more than one TELOS 250+ at any location, you may decide to stack them. Be

careful that the conical feet of the top amp are inserted properly on the top of the steel bars

of the amplifier located below. You may stack up to 3 amps provided extra care is taken to

ensure proper air circulation vents the rear heat-sinks.

Depending on the flatness of the surface where the amplifier will be located, you will adjust

the four round flat feet of the amplifier to allow full contact of the points with the support.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 7

L NE VOLTAGE ADJUSTMENTS

L NE VOLTAGE ADJUSTMENTSL NE VOLTAGE ADJUSTMENTS

L NE VOLTAGE ADJUSTMENTS

A voltage selector is provided inside the amplifier.

If your line voltage is not adapted to the voltage indicated on the serial plate of the

amplifier, please consult your local GOLDMUND dealer for internal adjustment.

ATTENT ON

ATTENT ONATTENT ON

ATTENT ON

On the 220V position, the GOLDMUND TELOS 250+ amplifier will function properly for

main line voltage between 211V and 257V. On the 110V position, the main line must

deliver between 105 and 129V. If your main line is usually out of these tolerances, please

consult your GOLDMUND dealer.

Please check the value of the main line fuse. This fuse is located on the back panel of the

amplifier, above the two power cord receptacles.

Use an 8A delayed fuse.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 8

CONNECT ONS

CONNECT ONSCONNECT ONS

CONNECT ONS

Connect the power cord to the back of the amplifier and plug it into the nearest wall plug.

Use only a 3 lugs grounded plug, for safety reasons. To get the best sound from the

amplifier, avoid any multiple plug or extension cord.

If used with an analog signal, connect the interconnect between the preamp and each

power amp and position the Analog/Digital input switch to analog.

When used with a digital input signal, connect the digital input cable to the digital input and

switch the input switch to digital. Since a digital Spdif cable carries 2 channels you may link

the digital output to the next amplifier to transfer the second channel.

Connect the speaker cable to one of the red and black terminals in the back of the

amplifier, or, if you use a Goldmund High Definition speaker cable, you can connect directly

from the speaker cable to one of the coaxial plugs on the back panel of the amplifier,

bypassing the amplifier adapter module of the speaker cable.

The 2 separate outputs (both 5 way post and coaxial) are connected internally in parallel.

They are provided to facilitate the connection in bi-wiring systems.

You may notice that the ground of the input plug and the black speaker terminal are the

same polarity. The amplifier is non-inverting in phase.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 9

AMPL F ER CONTROLS

AMPL F ER CONTROLSAMPL F ER CONTROLS

AMPL F ER CONTROLS

5.1 AUTO-POWER OPERAT ON

The TELOS 250+ may be powered on either manually (Manual Operation) or automatically

when receiving a signal (Auto-Power Operation). This is selected internally by the small

white 10-position circular selector located on the top circuit of the amplifier, close to the big

capacitors.

There is one position for Manual Operation and 9 for Auto-Power Operation with various

delays to power a number of amplifiers without a big surge on the AC line.

Position 0: Manual Operation

Position 1: Power after 200ms

Position 2: Power after 400ms

Position 3: Power after 600ms

Position 4: Power after 800ms

Position 5: Power after 1s

Position 6: Power after 1.2s

Position 7: Power after 1.4s

Position 8: Power after 1.6s

Position 9: Power after 1.8s

In AUTO-POWER mode, the amplifier is turned on automatically when receiving an audio

signal.

This mode is useful when several amplifiers are used together in a multi-amp system or

when the power amplifiers are not easily accessible.

When the amplifier is in AUTO-POWER mode and is operative, it may be muted by

pressing the front key, as in the normal mode.

GOLDMUND TELOS 250+ - Universal Power Amplifier - 10

5 5

AMPL F ER CONTROLS (Ctd.)

MPL F ER CONTROLS (Ctd.)MPL F ER CONTROLS (Ctd.)

MPL F ER CONTROLS (Ctd.)

5.2 MANUAL OPERAT ON

On the front panel of the GOLDMUND TELOS 250+ amplifier you will find only one

POWER key.

When first connected to mains power the green led will flash (equal time on and off) for

around fifteen seconds whilst the amplifier goes through the POWER UP sequence. At the

end of this sequence, the amplifier enters in STANDBY mode. The green led flashes

slowly.

Once in STANDBY mode, a short key press (<1 second) switches the amplifier ON. The

green led is permanently illuminated in this mode.

If the digital input is used, the yellow led is lit, showing the amplifier is locked. If the digital

input is not used, the amp remains muted until a lock is found. With an analog input, the

amp is immediately operational and the yellow led is always illuminated.

The amp may be returned to STANDBY mode with a short key press.

If an error is detected the red led will be illuminated. Once the cause of the error has been

removed, the amplifier can be returned to STANDBY mode with a long key press.

These security features are provided to reduce the risk of accidental POWER ON or

POWER OFF and to protect the amplifier in ERROR mode.

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