The use of single-ended to balanced converters that simply short pin 3 to ground is not recommended as performance will be compromised. Some form of balancing adapter may be used, but the performance of the GR-Amp will be limited by the sonic quality of the device. A high quality single-ended to balanced converters such as the FM Acoustics FM214 can be used between your single-ended preamplifier and the GR-Amp.
The single-ended version of the GR-Amp converts a single-ended input into the true balanced signal required by the amplifier at a very slight reduction in transparency. The single-ended version of the GR-Amp is ground-lifted.
Hence, care may be needed in the grounding scheme of your entire system.
Playing Music
Make sure that your amplifier is properly connected to a high-current power outlet. Before you turn the amplifier on, check that the speaker connections and inputs are properly hooked up and tightened. Make sure that you turn down the volume control on your preamplifier first before turning your amplifier on.
Locate the power toggle switch on the back next to the power umbilical inlet and flick it upwards to turn the amplifier ON. In less than a second, you will hear a faint click to indicate that the soft-start circuit has engaged and the LED(s)3 under the amplifier will glow.
Unlike most power amplifiers, the power toggle switch on the back of the amplifier is not the actual power switch. We have found that most toggle or rocker switches degrade the power supply path. Hence, the power toggle is a low- voltage, low-power trigger that switches in a high-current hermetically sealed relay with silver
contacts that is the actual power switch. Hence, if the amplifier does not switch on or off, resist flicking the switch up and down quickly. Wait a couple of seconds before trying the switch again.
Give your amplifier a warm-up period of at least 10 seconds for the circuits to stabilize before attempting to play any music. Because of a special “stay warm” circuit, as long as the amplifier is plugged in continuously, it will warm
3Note that there are two blue LEDs under the 360W amplifier module, and one blue LED under the 180W amplifier module.
Genesis Reference Amplifier Owners Manual Ver 2.0 | 7 |
