USER MANUAL GOLDMUND SR150 2-CHANNEL Universal Power Amplifier
Congratulations. Thank you for purchasing the Goldmund SR150 2-CHANNEL Universal Power Amplifier. You have acquired the best multi-usage Power Amplifier ever made for professional and domestic uses. Please take some time to read this manual. INTRODUCTION The GOLDMUND SR150 2-CHANNEL UNIVERSAL POWER AMPLIFIER Goldmund was founded in 1978 and has ever since been dedicated to the accurate reproduction of sound and image.
W A R N I N G ! No connection or manipulation must be done before reading those instructions. Damage to the amplifier may result if the following instructions are not consciously understood and applied.
CONTENTS 1 UNPACKING p4 2 CHOICE OF AMPLIFIER LOCATION AND COOLING p4 3 LINE VOLTAGE ADJUSTMENT 4 CONNECTIONS 5 AMPLIFIER CONTROLS p5 6 SOUND QUALITY OPTIMIZATION p7 p5 p6 Warm-up sonic effect. Speaker polarity. Mains line phase inversion. 7 SAFETY AND PRECAUTIONS p8 Protection against DC. Protection against short-circuits.
1 UNPACKING Yo u w i l l f i n d i n t h e G O L D M U N D S R 1 5 0 b o x : ❑ The amplifier ❑ The power cord ❑ This manual and the warranty card ❑ Accessories and spare fuses Please keep the packaging in case you need to transport the amplifier at a later date or if you have to send it for maintenance. WARNING IF YOU NEED TO RETURN THE SR150 TO THE FACTORY OR TO YOUR LOCAL REPRESENTATIVE FOR A WARRANTY REPAIR, PLEASE NOTE THAT IT MUST BE REPACKED IN THE ORIGINAL PACKAGING.
3 LINE VOLTAGE ADJUSTMENT An AC line voltage selection is possible inside the chassis. Please ask your dealer for assistance if the line voltage provided is not appropriate. ATTENTION On the 220V position, the GOLDMUND SR150 amplifier will function properly for AC voltages between 200V and 245V. On the 110V position, the AC line must deliver between 95V and 125V. If your AC line is usually out of these tolerances, please consult your GOLDMUND dealer. Please check the value of the mains line fuse.
5 AMPLIFIER CONTROLS On the front plate of the GOLDMUND SR150 amplifier you will find only one switch: The POWER key, used to power the amp on and one power Led. When turned ON the 2 channels are immediately connected and the front panel POWER Led lights up. If you use the digital input, the lock of the digital input will indicate this by changing the Led from green to yellow. The amp may be powered off by turning off the POWER switch at any time.
6 S O U N D Q U A L I T Y O P T I M I Z AT I O N ❑ Warm-up sonic effect If the power amplifier has not been powered on for a few days, the optimum sound quality is reached after 15 minutes. This delay has been optimized to be minimal and the sonic quality when just powered on is much higher than other quality power amplifiers.
7 SAFETY AND PRECAUTIONS ATTENTION The GOLDMUND SR150 is an extremely high speed amplifier. Any bad ground connection can generate high frequency oscillation which is dangerous for tweeters. It is also generally dangerous to run analog input cable and speaker cables in parallel for a long distance. If these cables are not of high quality or badly shielded, an “Antenna-Effect” can generate dangerous high-frequency oscillations. ❑ Protection against DC The GOLDMUND SR150 is a DC-coupled amplifier.
8 MAINTENANCE The GOLDMUND SR150 amplifier usually requires no maintenance. To clean your SR150 use a very soft, clean, damp cloth to avoid scratching the surface. Dampen with water or a mild detergent solution. Avoid abrasive or harsh cleansers (eg. products containing sodium carbonate). Always turn the power off before cleaning your amplifier. 9 T E C H N I C A L D ATA POWER • Nominal power before clipping: 2x200 W RMS (2 - 8 Ohms). 150 W RMS (1 - 16 Ohms). • Maximum power : > 400 W RMS (3 Ohms).
9 T E C H N I C A L D ATA DISTORTION Figures valid for all levels from 0 to 20 V / 8 Ohms. • Dynamic : TID < 0.01 % (- 80 dB). • Static : THD < 0.01 % (- 80 dB). SPEED • Slew rate : > 240 V/us • Rise time : < 260 ns. NOISE • Weighted ASA A : > 100 dB. D/A CONVERTER • Using a plugged-in Goldmund Alize4 2-channel D/A module protected against static. O P E R AT I N G T E M P E R AT U R E • Room temperature : -30 to +40 degrees Celsius ( -22 to +104 degrees Fahrenheit).
