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300 WATT RMS
ARC Audio-4200SE-4-Channel Amplifier-Masori.de

ARC Audio 4200SE

4-channel amplifier

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Description

    Discover the 4200SE, a 4-channel amplifier from ARC Audio. This device impresses with its high-end ClassA/B technology, developed by Robert Zeff himself. The 4200SE uses a sophisticated bias circuit to continuously deliver maximum power at any temperature. Unique thermal management, hand-selected Sanken power amp transistors and a microprocessor-controlled power supply complete the profile of this impressive amplifier. With the 4200SE, ARC Audio brings the clear and transparent sound of the Signature Edition directly into your audio setup.

    Signature Edition HighEnd ClassA/B amplifier developed by Robert Zeff
    The Signature Edition is a hard bias Class A/B amplifier. A simple Class B amplifier uses 2 output transistors to provide the current that moves the speaker. The positive transistor pushes the woofer out and the negative pulls it back. In this design, only 1 transistor works at a time. It is the transition between positive and negative that leads to the higher distortion that makes a Class B amplifier unacceptable for audio reproduction. In most cases, a bias circuit is added to a Class B amplifier to make it a Class A/B amplifier. The bias circuit improves distortion by turning on the unused output device slightly while current is flowing through the other device. The more bias you add, the lower the distortion, but there is a side effect. Heat is generated as the two output transistors are switched on at the same time. The more bias you add, the better it sounds, but the more heat you generate, the more heat changes the natural bias of the output devices.

    The trick with the Signature Edition bias circuit is to manage the bias current at any temperature. By carefully adjusting the bias of each amplifier, you can keep the bias stable over the entire temperature range, allowing the engineer to "dial in" much more bias than with a traditional Class A/B amplifier. This is one of the key elements to the amazingly transparent sound of the Signature Editions.

    The key to running this much bias is thermal management. The Signature Edition features a unique heatsink design that mounts a 4-inch fan in the center of the PCB to force cool air in a cross-flow pattern over a massive, finned heatsink before exhausting it at the ends. This design minimizes the impact of the installation location on the amplifier's thermal performance. When mounted upside down, under or behind a seat, or under a Signature Edition control panel, the same performance is achieved.

    To further improve dynamics and efficiency, the Signature Edition amplifier uses only rigidly regulated, fully isolated power supplies. The regulation not only improves the damping factor and overall control of an amplifier, but also eliminates any effects of voltage drops in the charging system.
    • hand-selected Sanken output stage transistors
    • uncompromising structure
    • Temperature-controlled bias for minimum distortion values at any temperature
    • Hard-regulated, microprocessor-controlled power supply unit with automatic switchover from HighVoltage to HighCurrent at low load.
    • Temperature-controlled fan
    • Attenuation factor >1000
    • HP/LP/BP switchable on all channels from 30-5500 Hz, 12/24 dB/oct switchable
    • BassBoost adjustable 20-80Hz and 0-15 dB
    • Separate gain controls for left/right
    • Input select switch
    • Symmetrical inputs via 8-pin Western connector
    • Illuminated ARC logo in 256 freely selectable colors
    • SubLevel controller included (freely assignable with 4-channel)

Features:

    • 2-channel amplifier
    • 4 channels @ 4 ohms: 110 Watts
    • 4 channels @ 2 ohms: 200 Watts
    • 2 channels @ 4 ohms (bridged): 400 Watts
    • 2 channels @ 2 ohms (bridged): 400 Watts
    • Frequency response: 4Hz - 100kHz
    • Crossover Range: 30Hz - 550kHz
    • Crossover Range X10: 300Hz - 5500kHz
    • Bass Boost: 0 - 15dB @ 20Hz - 80Hz
    • S/N ratio: 90 dB
    • Input Sensitivity (Low): .3V - 4V
    • Input Sensitivity (Bal): .4V - 8V
    • Max current draw: 222 Amps @ 1600 Watts 20% THD
    • Idle Current: 2.3 Amps
    • Dimensions: 19.5"(L) x 8.0" (W) x 2.5"(H)