The PC4800N amplifier delivers two channels of 800W power (20Hz to 20kHz) into 4 ohms, and a bridged mono channel of 1600W. The PC9500N amplifier offers two channels of 1500-watt power at 4 ohms (20 Hz to 20 kHz), or a single channel of 3000W, bridged mono. Total Harmonic Distortion is 0.5%. Both PC Series models feature a switch-mode power supply, resulting in more efficiently regulated voltage and reduced overall weight. The PC9500N is equipped with two separate transformers and the PC4500N with a single transformer. Two radiator heat-sinks are positioned adjacent to the power transistors to absorb any circuit board vibration; dual variable-speed cooling fans maintain airflow through the heat-sink assembly as well as to the centre of the amplifier.
Despite their high power output and compact sizes (under 29lbs), the PC4800 and PC9500 are UL-rated, and maintain efficiency, low current draw and reduced heat utilizing Yamaha's proprietary EEEngine and ultra-fast MOSFET technologies. Each channel contains a 31-position input attenuator and high-pass filter for signal quality and precise calibration. Both units are 2RU designs and feature front-panel power, protection, temperature, remote and level indicators. Each channel contains both professional balanced XLR and Phoenix-type terminal block input connectors; output connectors include 5-pole binding-post and Speakon. Two RJ45 terminals are included for networking purposes.
Yamaha has also announced the replacement for the popular NS10M nearfield monitor speakers. The bi-amped MSP10 Studio monitors boast many design innovations, improved materials and significant refinements to both the midrange performance and cross over parameters and mark an evolution in nearfield speaker technology. Aimed at professional users and designed by the same engineers that were responsible for the original NS10Ms the MSP10 Studio speakers feature an advanced bi-amped design, with components that are aligned with micron-tolerance, ideally matched and precisely tuned for optimum performance. The 4-ohm 8" cone woofer is driven by a 120-watt power amplifier whilst the 8-ohm 1" titanium dome tweeter has it¹s own 60-watt power amplifier. This combination results in an exceptional balance between low-mid and high frequency ranges and a smooth high frequency response up to and beyond 40 kHz. An integrated waveguide achieves uniform dispersion over 120 degrees making them ideal for surround monitoring.
(Lee Baldock)
