C SERIES

The new C-series power amplifiers by Yamaha not only provide the user with excellent cost-per-watt value; they build on that cost performance with efficient power consumption. Utilizing Yamaha 12184 PCT EEEngine technology , these amplifiers deliver outstanding sound quality with remarkable efficiency. All of this power and performance comes in a compact 2-rack-space size that makes transportation and installation easy. If you need transparent amplification with excellent reliability and superior performance, get your hands on C-Series amplifiers today!

Power ratings for the C160, C320 and C450 are 230, 520 and 720 watts per channel into 4 ohms, respectively. Yamaha's new EEEngine (Energy Efficient Engine) consumes power efficiently, which allows the amplifier to produce the same amount of output power with about half the AC power required by other amplifier designs. The EEEngine outperforms other efficiency-enhancing schemes like drive voltage switching, pulse-width modulation and switching series regulators without degrading sound quality.

In the normal stereo mode, separate input signals are routed to each channel with independent L/R signal control. An extra margin of flexibility is provided in parallel mode, which feeds a single input signal to both channels while maintaining independent L/R signal control. Bridged mono mode gives maximum power output. The C160, C320 and C450 pump out 460, 1040 and 1440 watts in bridged mono, respectively, all into 8-ohm loads.

Transparent amplification without sound coloration is supplied with a frequency response of 10 Hz to 50 kHz. A high damping factor of greater than 200 provides excellent bass response. Total harmonic distortion is less than 0.05% perfect for today's digital sources and musical instruments.

All three models offer comprehensive protection designed to prevent damage to the amplifier and connected speakers. POWER ON MUTING suppresses the outputs until the amplifier circuitry has stabilized. To keep the operating temperature stable, all three models are equipped with ultra-quiet, variable-speed cooling fans. Added protection is supplied with heat oversink protection, noise filtering, a PC limiter for short circuit protection and an attenuator security cover to protect level settings.

The rear-mounted attenuators are dB calibrated in 31 steps and allow standard L/R adjustment, ideal for permanent installations. The balanced input section offers both XLR jacks and screw terminal barrier strips allowing for quick, easy connection to virtually any system. Speakers are connected to the output section via screw terminal barrier strips.

By means of switching drive system, Yamaha's EEEngine technology reduces AC power requirements and heat loss while maintaining output power and sound quality. Input power is supplied through a high-efficiency current buffer. During low requirement periods, it transparently switches the input power on and off automatically as needed. As the signal becomes large, an independently responding auxiliary power line supplies the additional power, as required. The output isn't compromised because the auxiliary power line is driven by the power supply voltage, which can maintain the maximum output to the speaker load. The amplifiers make more efficient use of the AC power than conventional amplifier technology. With EEEngine technology, the electric company will wonder how you're doing it!