POWER AMPLIFIER Owner’s Manual Mode d’emploi Bedienungsanleitung Manual de instrucciónes A CLIP B SIGNAL TEMP PROTECTION POWER ON OFF M
Introduction Thank you for purchasing a Yamaha C450/320/160 series power amplifier. This series of audio amps was developed from Yamaha's wealth of experience in building PA equipment and its tradition of careful attention to every detail of circuit design. These amps feature high power and superb quality together with superior reliability and stability, guaranteeing the highest possible audio performance.
Precautions 1. Avoid excessive heat, humidity, dust and vibration. Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity — such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage. 5. Make sure power is off before making or removing connections. Always turn the power OFF prior to connecting or disconnecting cables.
Controls and Functions ■ Front Panel 2 4 3 A CLIP B SIGNAL TEMP PROTECTION POWER ON OFF 1 1 POWER switch and indicator This is the main POWER switch. Press to power ON the amplifier. Press again to power OFF. The POWER indicator lights up when the amplifier is powered ON. 2 TEMP indicator When the temperature of the heat sink exceeds 85 degrees Celsius, this indicator will light red.
■ Rear Panel 2 3 INPUT CHANNEL B CHANNEL A G G 4 5 SPEAKERS (BRIDGE) (PARALLEL) CHANNEL B CHANNEL A BRIDGE STEREO BRIDGE 20 15 20 10 25 30 40 15 10 25 30 6 3 6 3 40 ∞ –dB 0 ∞ –dB 0 CHANNEL B CHANNEL A STEREO PARALLEL 1 1 Volume controls These volume controls allow you to adjust the volume level in 31 steps in the range between –∞ dB and 0 dB. 2 INPUTS (CHANNEL A, B) Two types of balanced inputs for channels A and B are provided.
■ Modes: STEREO/PARALLEL/BRIDGE STEREO mode In this mode, channels A and B operate independently (as a conventional stereo amp). The CHANNEL A input signal will be output from the CHANNEL A output terminals, and the CHANNEL B input signal will be output from the CHANNEL B output terminals. BRIDGE mode In this mode, the CHANNEL A input signal will be output from the BRIDGE output terminals. In this case, use the front panel (channel) A volume control to adjust the volume.
