Yamaha C320- User Manual

Page 2 - Introduction; for outputs are provided.

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 PAequipment and its tradition of careful attention to every detail of circuit design. These ampsfeature high power and superb qua...

Page 3 - Precautions; Contents

Precautions 1. Avoid excessive heat, humidity, dust and vibration.Keep the unit away from locations where it is likely to beexposed to high temperatures or humidity — such asnear radiators, stoves, etc. Also avoid locations whichare subject to excessive dust accumulation or vibrationwhich could caus...

Page 4 - Controls and Functions; Front Panel

2 Controls and Functions ■ Front Panel TEMP PROTECTION POWER ON OFF A B CLIP SIGNAL 1 2 3 4 5 1 POWER switch and indicatorThis is the main POWER switch. Press to power ONthe amplifier. Press again to power OFF. The POWERindicator lights up when the amplifier is powered ON. 2 TEMP indicatorWhen the t...

Page 5 - Rear Panel; • STEREO, PARALLEL mode; SPEAKERS; SPEAKERS; ) terminals of CHANNELS; • Barrier strip

3 ■ Rear Panel SPEAKERS CHANNEL B CHANNEL A INPUT CHANNEL B CHANNEL A G G (BRIDGE)(PARALLEL) BRIDGE STEREO BRIDGE STEREO 4 3 2 5 CHANNEL B CHANNEL A ∞ 0 40 30 20 15 10 3 6 25 –dB ∞ 0 40 30 20 15 10 3 6 25 –dB 1 PARALLEL 4 SPEAKERS terminalsFor polarity in each mode, refer to the followingdiagram. • ...

Page 6 - SPEAKER IMPEDANCE; STEREO mode connections; PARALLEL mode connections; BRIDGE mode connections; and

4 ■ Modes: STEREO/PARALLEL/BRIDGE BRIDGE modeIn this mode, the CHANNEL A input signal will beoutput from the BRIDGE output terminals. In this case, use the front panel (channel) A volume control to adjust the volume. ■ SPEAKER IMPEDANCE In STEREO and PARALLEL modes, the minimumload (=speaker) impeda...

Page 7 - Caution for Speaker Connection; Turn off the POWER switch.; • Speaker fuse; : Speaker’s nominal impedance; • Speaker cable

5 Caution for Speaker Connection 1. Turn off the POWER switch. 2. Remove the cover attachment screw(s) and removethe protective cover from the speaker terminals. Screw 3. After removing approx. 15 mm of insulation from theends of the speaker cables, bind the bare ends of thespeaker wires in the corr...

Page 8 - Rack Mounting; Mounting in an EIA standard rack; Yamaha provides an optional 1U-size ventilation panel VP1.

6 Rack Mounting ■ Mounting in an EIA standard rack If multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps will cause theinterior of the amp to become very hot, causing the performance of the amps to be impaired. When mounting amps ina rack, you must make...

Page 9 - Portable Rack Mounting; Positioning the Housed Amplifier

7 ■ Portable Rack Mounting The amplifier intakes cool air through the front panel and exhausts warm air out the rear panel. When mountingamplifiers in a portable rack, make sure the rear panel is completely open for ventilation. Front Air intake Air exhaust Completely open (Rear View) (Side View) SP...

Page 10 - Specifications; General Specifications

8 Specifications ■ General Specifications C450 C320 C160 Power Output Level (Rated Power) 8 Ω /STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W 20 Hz~20 kHz 4 Ω /STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W 0.05% 8 Ω /BRIDGE 1240 W 880 W 400 W 1 kHz 8 Ω /STEREO 520 W + 520 W 370 W + 370 W 175 W ...

Page 12 - Performance Graphs; Troubleshooting; Indicator

10 ■ Performance Graphs Mode:STEREOBoth ch DrivenRL=4 Ω , f=1kHz Mode:STEREOBoth ch DrivenRL=4 Ω , f=1kHz Mode:STEREOBoth ch DrivenRL=4 Ω , f=1kHz C160 C320 C450 Output Power [W] Power Consumption [W] Power Consumption [W] Output Power [W] Output Power [W] Power Consumption [W] 1k 100 10 1 5k 1k 100...

Table of Contents:

Summary

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