Description

NEW – Returned from shipping in original packaging (OVP) The MM9K is a powerful two-channel power amplifier for professional audio systems. Both channels together deliver up to 9000 W peak power. Each channel provides 800 W at 16 Ω, 1600 W at 8 Ω, 3000 W at 4 Ω and 4500 W at 2 Ω. In bridge mode, 3200 W at 16 Ω, 6000 W at 8 Ω or 9000 W at 4 Ω are possible. The Class-HTD circuit achieves a maximum output voltage of 170 V Peak and a maximum output current of 70 A Peak per channel. Several VPL stages allow the maximum voltage to be adapted to the respective speaker load. A global gain setting as well as extensive protection and monitoring functions support safe operation with different speaker configurations. For analogue signal routing, electronically balanced XLR inputs and parallel XLR Loop-Thru outputs are available. The speakers are connected via Binding-Post terminals. Technical data - Circuit type: Class HTD - Colour: Black - Enclosure: Steel enclosure with steel and aluminium front - Dimensions: 483 × 88 × 396 mm - Rack format: 19 inch - Rack height: 2 HE - Installation depth: 358 mm - Operating voltage: 130–265 V or 65–135 V - Versions: separate versions for 230 V and 115 V - Mains frequency: 50–60 Hz - Mains connection: 230 V CE with 16 A CEE7 or 115 V ETL with 30 A Twist-Lock - Protection functions: CPL, VPL, PAL, SOAD, VHF, DC, short-circuit, low-impedance and temperature protection - Additional safety functions: high-impedance warning and soft start - Cooling: two temperature-controlled fans - Airflow: front to rear - Frequency range: 2 Hz–34.2 kHz at 1 W at 8 Ω, +0/−3 dB - Input impedance: 20 kΩ - Output impedance: 19 mΩ at 100 Hz - Signal-to-noise ratio: >112 dBA - Distortion factor: <0.1 % at 20 Hz–20 kHz and 1 W - THD+N: <0.05 % at 1 kHz and 1 dB below clipping - Crosstalk: >70 dB at 1 kHz - Amplifier channels: 2 - Output power per channel: - 16 Ω: 800 W - 8 Ω: 1600 W - 4 Ω: 3000 W - 2 Ω: 4500 W - Total power: 9000 W Peak with driven channels - Bridge power: - 16 Ω: 3200 W - 8 Ω: 6000 W - 4 Ω: 9000 W - Operating modes: Stereo, Mono and Bridge - Bridge operation A+B: automatic gain compensation of −6 dB - Voltage gain: 23–44 dB in 3-dB steps - Standard gain: 38 dB - Maximum output voltage: 170 V Peak per channel - Maximum output current: 70 A Peak per channel - VPL per channel: 170, 140, 116, 100, 80, 66 or 54 V - VPL operating modes: Hard and Soft - VPL in bridge operation: 340, 280, 232, 200, 160, 132 or 108 V - Level control: front-mounted potentiometers with 31 detented steps from −∞ to 0 dB - Audio inputs: one 3-pin, electronically balanced XLR-F connector per channel - Loop-through outputs: parallel XLR-M Loop-Thru connectors - Speaker outputs: Binding Posts - Front indicators: Power, PAL, Signal, High Impedance, −20 dB, −15 dB, −10 dB, −4 dB, VPL, CPL, VHF, Temperature, Fault, Mute and Bridge - Soft start: Yes - Maximum inrush current: 5 A - Remote activation: separate remote switch on the front - Net weight: 12 kg Applications The power amplifier is suitable for professional sound reinforcement systems, touring racks and permanently installed audio systems. The high power reserve enables operation of high-power speaker and subwoofer configurations, provided that the impedance and electrical load capacity of the connected systems match the selected operating mode. In two-channel operation, two signal paths can be supplied independently. For higher output voltages, both channels can alternatively be operated in bridge mode. The VPL settings allow the maximum output voltage to be adapted to the connected load. Balanced XLR connections enable integration into analogue signal paths. The input signal can be passed on unchanged to additional devices via the Loop-Thru outputs. The 19-inch enclosure with two height units is designed for installation in amplifier racks. The speakers are connected via Binding-Post terminals.