User manual MACKIE AM4120 DATASHEET

[. . . ] Microphone Input 1 can be switched to line level, set to have priority over all inputs, and can be activated by either VOX with an adjustable threshold or a contact closure. Activation of any microphone override provides 18Vdc (300mA) at a barrier connector on the rear panel, which may be used to drive LEDs or relays. Two unbalanced, stereo Aux inputs are internally summed to mono and selected by a switch on the front panel. [. . . ] at 7kHz 115/230Vac (±5%), 50/60Hz, 450VA DC (24V battery) 10A/Hr Environment Maximum Ambient: Physical Dimensions (HxWxD): Weight: Finish: Warranty 3 years, parts & labor one-time no-fault repair policy Accessories A1708 RM4000 Three Chime Card Rack Mounting Ears 131°F (55°C), Non-precipitating humidity 3. 46" x 17" x 12. 4" (88mm x 431mm x 314mm) 25. 4lbs. (11. 5kg) Black painted or treated steel, white nomenclature AM4120 Noise: Equalization Output: Inputs 2­4: Audio Inputs Microphones: Three, active balanced XLR, LoZ, 1. 3mV, 24V phantom powering with on-off switch Microphone/Line: One, active balanced XLR and parallel barrier, switched mic/line; Mic: LoZ, 1mV, Line: 80mV Line Level: Three, unbalanced, RCA connectors. Two each, left and right (summed) Aux, either pair selectable via front-panel switch, 100mV; One, Main (signal processing return), 775mV Audio Outputs Number of Channels: Low Impedance: Constant Voltage: Line Level: One 4 25V, 50V, 70V, 100V Barrier connectors One, signal processing output, 2. 5V, 600 Two, tape (auxiliary) outputs 0­2. 2V, RCA connectors LED relay output, aux DC output: 18Vdc (300mA) activated by priority Priority switch input, dry contact closure barrier connectors Power switch, master Volume, Inputs 1­4, Aux level, Aux 1/2 Switch, Treble shelving, Bass shelving Tape output level, Voice priority threshold, Chime output level (if installed), 24V phantom on/off switch, H-P Filter in/out switch, L-P Filter in/out switch, Source Voltage Selector switch Control Inputs & Outputs DC Outputs: Inputs: Controls Front Panel: Rear Panel: 2 O FoF46 PAGES S PAGE 3 AM 4120 - P. A. AMPLIFIER OVERLOAD SIGNAL PEAK ON AM4120 O FoF46 PAGES S PAGE INPUT LEVELS AUX EQ VOLUME HIGH 4 2 3 4 6 2 1 9 0 10 8 7 6 5 INPUT 1 AUX 6 6 7 4 4 66 8 8 8 -10 +10 -10 +10 8 8 6 1 9 0 10 1 4 2 2 7 3 82 1 9 0 10 4 2 2 5 0 0 LOW 4 6 7 3 82 1 9 0 10 4 3 82 5 5 INPUT 2 INPUT 3 INPUT 4 POWER 4 5 6 4 5 6 3 7 3 7 2 82 1 9 1 9 Integrated Mixer/Amplifier 0 10 0 10 MANUFACTURING DATE CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE INDUSTRIAL · MADE IN ITALY PATENTS PENDING · COPYRIGHT ©1999 · THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC. : "MACKIE" "MACKIE INDUSTRIAL" & THE "RUNNING MAN" FIGURE , , AMPLIFIER AM4120 Integrated Mixer/Amplifier Architects' and Engineers' Specifications The integrated mixer/amplifier shall have a nominal output power of at least 120W RMS. It shall operate on 115VAC or 230VAC at either 50Hz or 60Hz and have its source power supplied by a detachable IEC power cord. In addition the unit shall be capable of being directly powered by a 24Vdc source, such as storage batteries. It shall have a power switch on the front panel. The unit shall have a constantimpedance output to drive a 4 load at its rated output. It shall also have 25V, 50V, 70V and 100V constant-voltage outputs with like performance. Inputs to the unit shall include: at least four actively balanced microphone; two unbalanced, stereo Aux; and an unbalanced signal processing return. Outputs shall include: at least two unbalanced Tape (auxiliary) jacks with a common, continuously variable level control; and one signal processing send. Balanced connections shall be made through XLR connectors and unbalanced connections through RCA connectors. Microphone Input 1 shall have adjustable sensitivity between mic and line, selected by a switch on the rear panel. This input shall also be programmable to completely exclude or attenuate all other inputs when its priority link is activated by either a contact closure or a VOX circuit, with a continuously adjustable threshold. The XLR connector for Input 1 shall be wired, in parallel, to a barrier strip on the rear panel. Microphone inputs 2-4 shall have a 24V phantom powering circuit that can be disabled with a switch on the rear panel. These inputs shall be equipped with a high-pass filter and a low-pass filter having a response of 12dB/octave and fixed ­3db points at 300Hz and 7kHz, respectively. Each of these filters shall be enabled by a switch on the rear panel. [. . . ] New material, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current Mackie Industrial product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated. and are registered trademarks of Mackie Designs Inc. [. . . ]