Goldmund Stereo Amplifier TELOS 200 User Manual

USER MANUAL  
GOLDMUND TELOS 200  
Universal Power Amplifier  
 
W
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!
No connection or manipulation must be  
done before reading these instructions.  
Damage of the amplifier may result if the  
following instructions are not consciously  
understood and applied.  
This extremely high quality amplifier  
possesses 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.  
T E LOS 200 Universal Power Amplifier  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER  
 
C O N T E N T S  
1 UNPACKING  
p 4  
2 CHOICE OF AMPLIFIER LOCATION AND COOLING  
3 LINE VOLTAGE ADJUSTMENT  
4 CONNECTIONS  
p 4  
p 5  
p 6  
5 AMPLIFIER CONTROLS  
6 SAFETY FEATURES  
p 7 - 9  
p 10 - 11  
p 12 - 13  
7 TECHNICAL DATA  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER  
 
U N PACKING TELOS 200 UNIVERSAL POWER AMPLIFIER  
1
2
You will find in the GOLDMUND TELOS 200 box:  
q The amplifier  
q The power cord  
q This manual  
Please keep the packaging in case you need to transport the amplifier at a later date.  
WARNING  
IF YOU NEED TO RETURN THE TELOS 200 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 200 IN TRANSIT.  
USE OF ALTERNATIVE PACKAGING IS LIKELY TO RESULT IN DAMAGE, INVALIDATING WARRANTY  
COVER.  
CHOICE OF AMPLIFIER LOCATION AND COOLING  
The GOLDMUND TELOS 200 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 and vents.  
If you use more than one TELOS 200 at any location, do not stack them and do not place  
other equipment on or too close to them.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 4  
 
LINE VOLTAGE ADJUSTMENT  
3
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.  
ATTENTION  
On the 220V position, the GOLDMUND TELOS 200 amplifier will function properly for main  
line voltage between 190V and 245V. On the 110V position, the main line must deliver  
between 95 and 125V. 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 a 16A delayed fuse.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 5  
 
C O N N E C T I O N S  
4
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. You may either use the RCA  
female socket or the XLR. The XLR socket, especially useful in professional installations, is  
wired as follows:  
1. Grounding, Shielding  
2. Hot  
3. Cold  
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.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 6  
 
AMPLIFIER CONTROLS  
5
There is no power ON/OFF switch at the connector. As soon as the amplifier is connected to  
AC line and if the amplifier has not detected an error previously, the yamplifier is receiving  
current. but can be in one of four modes; STANDBY, ON, OFF or ERROR. (see Manual  
Operation section).  
The TELOS 200 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. Positions 1  
through 8 enable various delays to be set. This supports powering-up a quantity 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  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 7  
 
AMPLIFIER CONTROLS  
5
Manual Operation  
On the front plate of the GOLDMUND TELOS 200 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 STANDBY mode. The green Led flashes  
slowly (four sequences off then one on).  
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 may  
flicker, showing there is no lock and the amp remains muted until a lock is found. With an  
analog input, the amp is immediately operational and the orange Led illuminated  
The amp may be returned to STANDBY mode with a short key press. A long key press (>2  
seconds) takes the amplifier inPOWER OFF mode.  
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.  
Key Press Sequence Summary  
Start mode  
ERROR  
Power Key Press  
End mode  
Green Led mode  
SHORT  
LONG  
-
-
STANDBY  
ON  
SLOW FLASH  
SHORT  
LONG  
ON  
STANDBY  
ON  
OFF  
OFF  
SLOW FLASH  
OFF  
SHORT  
LONG  
STANDBY  
OFF  
SHORT  
LONG  
-
-
OFF  
STANDBY  
SLOW FLASH  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 8  
 
AMPLIFIER CONTROLS  
5
Auto-Power Operation  
In AUTO-POWER mode, the amp 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.  
Other display  
If an abnormal situation is found by the TELOS 200, the front panel red light may turn ON,  
and the power of the amplifier is instantaneously set OFF.  
The red Led indicates an over temperature situation, HF oscillation or DC signal has been  
detected.  
Before re-starting the amplifier, detect what caused the problem and remove the cause first.  
The amp will remain OFF with the red Led on until the user intervenes.  
To unlock the amp from error mode, press the power key for >2 seconds. or restart the  
power sequence.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 9  
 
SAFETY FEAT U R E S  
6
The GOLDMUND TELOS 200 amplifier provides features to protect the amplifier and the  
speakers against all mishandling or component failure. However precautions must be taken  
to avoid problems with a very high power amplifier.  
Protection against DC  
The TELOS 200 is a DC-coupled amplifier. If the associated preamplifier is badly designed or  
defective (often true for tube preamps), the speakers could be damaged.  
In such a case, the DC protection circuit of the TELOS 200 will automatically turn off the  
amplifier. This detection circuit is totally immune to any sonic effect.  
To indicate that the amplifier has been turned off by the protection circuit, a red Led will be  
displayed on the front panel.  
When the source of DC offset is suppressed, turn ON the amplifier again.  
Protection against HF oscillations  
In the same way, the speaker must be protected against a large amount of high frequency  
oscillation, if present, before and after to avoid any danger for the tweeters, even if these  
frequencies remain unnoticed.  
The amplifier is by itself extremely stable. However some mishandling must be avoided in  
order to avoid any oscillation:  
• Never plug an input cable into a power amp when it is turned on.  
• Be careful to use only very high quality interconnects. If the ground connection becomes  
loose, there is a big danger of oscillation. Warranty is voided if this occurs.  
• Never run the input and output (speaker) cables in parallel.  
If the TELOS 200 detects excessive oscillation, the amplifier will be turned OFF automatically.  
You will have to suppress the source of oscillation and turn it ON again once the protection  
is activated.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 10  
 
SAFETY FEAT U R E S  
6
Overheating protection  
If for any reason (malfunction, too high level, too low load impedance) the temperature of  
the amplifier could reach a dangerous level and the TELOS 200 could be damaged.  
To avoid this type of damage, if the temperature rises too high, a protection circuit switches  
the amp OFF automatically. A red front panel light indicates that the amplifier has been  
turned OFF by the protection circuit.  
If this happens, let the amplifier cool for some time. We strongly recommend investigating  
the cause of the temperature gain before operating the amp again.  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 11  
 
TECHNICAL DATA  
7
SAFETY FEATURES  
• AC voltage fuse: min 16 A slow-blow .  
FRONT PANEL CONTROLS  
• 1 control key (Muting/Standby and 2 sec tempo for ON/OFF).  
• Red Led display for Over-heating, DC offset or HF protection and Overload.  
• Green Led display for Power ON, operating mode (blinking in standby).  
• Yellow Led display for signal connection and digital Lock.  
REAR PANEL CONNECTORS AND CONTROLS  
• Power cord: universal socket 3 lugs.  
• Main fuse (16 A slow-blow).  
• Green-yellow AC earth binding post.  
• Output speaker 1 x 5 ways post in parallel.  
• Output speaker 1 x Coaxial connectors in parallel.  
• Analog Input connector RCA.  
• Digital Spdif input and output RCA connector.  
• Input connector XLR for analog balanced input.  
• Switch between analog or digital input.  
• Switch right or left channel selection from the Spdif input.  
SIZE AND WEIGHT  
• 24.05 cm W x 38 cm D x 19.15 cm H.  
• Weight: 30 kg net.  
WARRANTY  
• 3 years parts and labor.  
POWER  
User manual - GOLDMUND TELOS 200 UNIVERSAL POWER AMPLIFIER | P 12  
 
 

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