By Lam Seng Fatt
Many Malaysian audiophiles have been wondering what happened to the Yamaha NS-5000 speakers that took the market by storm back in 2017 when they were launched during that year’s KL International AV Show because they were not seen at the AV shows after that.
Well, they don’t have to wonder any more because the Yahama NS-5000 speakers along with the matching C-5000 preamp and M-5000 power amp are on demo at RAVE Systems on the ground floor of PNB Darby Park, Jalan Binjai, off Jalan Ampang in Kuala Lumpur.
Those who attended the 2017 KLIAVS would be quite familiar with the looks and sonic signature of the Yamaha NS-5000 speakers.
However, the C-5000 preamp and M-5000 power amp are new to Malaysians.
According to the Yamaha website, the C-5000 features a fully balanced and discrete circuit transmission across all stages of the signal path at Tone Defeat.
It has a folding-book design for the pre-amplifier PCB that mirrors the left and right signal paths for precise matching and layout.
With each channel physically identical, the C-5000 is capable of the most accurate reproduction of audio which is both wide and deep.
Further, the ground loop is minimised when other components are connected.
The patented floating design is adopted across the phono EQ, input amp and line amp stages which removes the influence of ground noise from the signal.
Adopting independent dual toroidal transformers for the left and right channels delivers optimal separation and therefore produces a sound stage which is faithful to the original source.
Low magnetic leakage lowers adverse impact on the audio signal. Following detailed research based on trial listening, the power transformer was enclosed in a copper-plated case to suppress magnetic flux and vibration. This also assists in minimising the influence of flux in the phono circuit.
The preamp is a low-impedance design. Thick screw-type wires are utilised to reduce the impedance of the power supply and maximise the transmission of musical information.
The M-5000 power amp is rated at 100 watts per channel (8 Ohms) and 200 watts (4 Ohms).
Meticulously designed to have a balanced circuit, the M-5000 adopts a perfectly symmetrical layout to isolate the left and right channels both physically and electrically. Signal paths are kept as short as possible.
As opposed to conventional power amplifier designs whereby power is supplied via a power transistor and the negative polarity is connected to ground, the power supply of the M-5000 is connected directly to each positive and negative side of the output stage.
Completely floating the entire power amp circuit from the ground removes any undesirable impact of minute voltage fluctuations or ground noise.
The design also creates an ideal symmetrical layout for employing MOSFET power amplifiers, improving drivability for low impedance speakers.
The deliberately simple design which also serves to reduce the signal path as much as possible, minimises energy loss and achieves lower impedance for high-fidelity performance.
The power amp also features a massive toroidal core transformer and a low impedance design.
The massive toroidal transformer is utilised with a 3 mm thick pure brass base which suppresses unwanted vibrations.
The drawn-out copper wiring from the winding core contributes to the low impedance design by markedly reducing the loss of energy when compared to conventional designs
Thick wires and screw-type connections contribute to the low-impedance design of the M-5000 – minimising energy loss that would otherwise typically occur in conventional connections and wire assemblies.
The use of screws and brass terminals directly on the block capacitors as opposed to solder promotes a strong, low impedance connection.
For more information, contact RAVE systems at 03-2163 2818.