POWER AMPLIFIER Owner’s Manual Mode d’emploi Bedienungsanleitung Manual de instrucciónes CLIP SIGNAL TEMP PROTECTION POWER...
Page 2
Yamaha’s previous models), and has lead to a reduction in energy cost and to less-restrictive installation requirements related to heat generation. This owner's manual covers the three models C450, C320 and C160. In order to take full advantage of your power amp and enjoy long and trouble-free operation, please read this owner's manual carefully before use.
4. Do not open the case or attempt repairs or modifica- tions yourself. This product contains no user-serviceable parts. Refer all maintenance to qualified Yamaha service personnel. Opening the case and/or tampering with the internal circuitry will void the warranty.
Controls and Functions Front Panel CLIP SIGNAL TEMP PROTECTION POWER 1 POWER switch and indicator 4 CLIP indicators This is the main POWER switch. Press to power ON These red LED indicators light up when the respective the amplifier. Press again to power OFF. The POWER channel’s output signal distortion exceeds 1% (i.e.
Rear Panel INPUT SPEAKERS (BRIDGE) CHANNEL B CHANNEL A CHANNEL B CHANNEL A (PARALLEL) BRIDGE STEREO BRIDGE STEREO PARALLEL ∞ ∞ –dB –dB CHANNEL B CHANNEL A 1 Volume controls 4 SPEAKERS terminals These volume controls allow you to adjust the volume For polarity in each mode, refer to the following level in 31 steps in the range between –∞...
Modes: STEREO/PARALLEL/BRIDGE STEREO mode BRIDGE mode In this mode, channels A and B operate independently In this mode, the CHANNEL A input signal will be (as a conventional stereo amp). output from the BRIDGE output terminals. In this The CHANNEL A input signal will be output from case, use the front panel (channel) volume control the CHANNEL A output terminals, and the CHAN-...
460 W+460 W (8Ω) in stereo and 1240 W (8Ω) in the protective cover from the speaker terminals. monaural on the C450; 340 W+340 W (8Ω) in stereo and 880 W (8Ω) in monaural on the C320; 160 W+160 W (8Ω) in stereo and 400 W (8Ω) in monau- ral on the C160.
When doing so, it is necessary for 35% or more of the entire surface area of a 1U size panel to be open. Air circulation will be even better if the top surface of the rack has ventilation openings. Ventilation panel Yamaha provides an optional 1U-size ventilation panel VP1. Unit: mm Mounting four or fewer amps in...
Portable Rack Mounting The amplifier intakes cool air through the front panel and exhausts warm air out the rear panel. When mounting amplifiers in a portable rack, make sure the rear panel is completely open for ventilation. (Side View) (Rear View) Completely open Front INPUT...
Specifications General Specifications C450 C320 C160 Power Output Level (Rated Power) 8Ω/STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W 20 Hz~20 kHz 4Ω/STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W 0.05%...
Block Diagram SIGNAL Ach Power Amp CHANNEL A CHANNEL A CHANNEL A PC Limiter (BRIDGE) (PARALLEL) CLIP Temperature PROTECTION Protection INPUT Sensor SPEAKERS Circuit TEMP (Heat Sink) CLIP SIGNAL CHANNEL B Bch Power Amp PARALLEL BRIDGE CHANNEL B STEREO CHANNEL B PC Limiter Dimensions W:480...
PROTECTION indicator amplifier. lights. A DC voltage of ±2 V or Consult your dealer or greater was generated in the The relay operates to protect nearest Yamaha service power amplifier’s output the speaker system. center. circuit.