Niko 1300 is a dual monolithic Class A/B power amplifier, with 8 ohm 1300Wrms and 4 ohm 1950Wrms monolithic BTL amplifier and 2 ohm 4 ohm 1100Wrms350Wrms stereo amplifier. All have 10Hz -90kHz bandpass @ -3dB across all power levels.
The two monolithic blocks each have 16 matched power BJT transistors to ensure the best efficiency of the output current, which can greatly exceed 100 amperes, and then the two blocks are completely electrically isolated and equipped with independent floating power supplies.
All components have been screened for tolerance and thermal stability, and matched in terms of electrical characteristics. For transistors, we have developed a custom gold-plated thermal coupler to ensure the best symmetry and stability of the power driver stage.
In order to ensure the lowest possible output impedance and highest output current of the amplifier under all possible re-drive conditions, all connections to the power transistors are made of gold-plated 4mm solid copper busbars. This is a very critical element when driving a very demanding speaker system to maintain a flat response even at extremely high and continuous currents under any dynamic request, and the amplifier can manage a significant damping of more than 200 at 8 ohms factor.
The dedicated analog power supply uses two independent custom-designed 1000VA toroidal transformers, and the power supply is installed on a floating mechanical platform equipped with a servo motor. The platform can be moved down and physically disconnected from the mechanical chassis and the overall power supply of the power transistor to provide complete isolation, just like you have a complete external power supply to avoid any physical interference and unwanted noise propagation. To ensure complete isolation, even the power supply unit used for the service circuit is completely independent of the audio line.
Two capacitor filter banks provide a huge 100.000μF, running at 85V, can store up to 300 joules of energy to support even the most difficult dynamic situations, such as a band or orchestra performing in front of you.
Even in the power supply stage, the electrical connection is made of gold-plated 4 mm solid copper bus bars to ensure a perfect and long-life electrical connection.
High-current electricity is connected to the grid by a professional power connector“powerCON”Supported, usually only used in advanced professional equipment, and is the only power connector that can ensure a perfect and robust electrical connection in terms of mechanical robustness. SS and reliability.
32A Power CON is a very sturdy and reliable locking single-phase AC electrical cable connector for large current capacity(32A rated). It is considered to be a non-standardized three-pole connection system that does not destroy the ability to meet the needs of high-power power distribution systems and professional audio supply as well as requirements for lighting equipment and equipment. The connector includes contact points for phase, neutral, and protective grounding (ground) conductors. The rated current can reach 32A and the voltage can reach 250V.
The input stage of the Niko1300 amplifier can be“Balanced”(XLR differential input stage)To ensure the lowest hum and noise from the input cable as well“Unbalanced”. The two input modes are activated by a true bypass switch selector. The preamplifier is designed to have a minimum number of components to avoid any extraneous to the input signal“Sound color”, And is packaged in a sealed aluminum box to completely reject radiated noise, and the input stage gain can be selected by a step switch instead of a linear CO. NTROL to ensure the same gain for the two stages when using the stereo version.
The Bias of the amplifier is automatically managed by the unit to compensate for temperature changes, while the unit continuously monitors the output signal to provide the necessary corrections to avoid distortion due to the nonlinearity of the speaker impedance. In this way, due to the excessive power supply and extremely low output impedance, the unit eliminates the negative effects of sudden impedance changes and electromagnetic force interaction, which is naturally generated by the electromechanical speaker, and ensures a linear response. Even in large-scale dynamic bursts, NSE will appear on all spectrums.
The amplifier is equipped with DC-OUT, Temp and anti-bump protection. The embedded microprocessor monitors key parameters in real time and manages the functions of all internal components, including protection and power supply servo motors.
All external electrical connections are based on the long life and total electrical quality of the MIL level.