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Resumen del manual
It makes an excellent main mixing boards for large scale sound reinforcement, complex nightclub, theatrical and broadcast work. The M1524/M1532 has 24/32 input channels. Each channel has a pair of switch-selectable inputs, either of which is usable with mic or line level sources. The input channels have interstage patch points (EQ Out/Fader In jacks), and similar insert points are provided for the program, echo and foldback busses. The M1524/M1532 has 13 mixing busses (including a 5 x 4 matrix), and 17 outputs (plus patch outputs). The M1524/M1532 is built of only the finest components such as smooth, quiet conductive plastic faders, and multi-brand equalizers with center-tapped “flat” position detents. These controls are calibrated accurately, in dB, for precise, repeatable settings that save valuable set-up time. To minimize hum and ensure the greatest reliability in critical environments, the M1524/M1532 is equipped with a separately packaged bipolar 25 volt power supply that affords a generous margin of headroom (a full +24dBm output). For the utmost in serviceability, the Ml524/ Ml532 has the convenience of plug-in modules, removable via the front panel and electrically connected to the power and signal busses with ribbon cables. You 11 appreciate the extra refinements in the M1524’s/M1532’s advanced technology, reliability and human engineering. For example, the pick-off points for the switch selectable pre-post echo and foldback sends may be changed by means of simple jumper rewiring. Likewise, lOdB of gain can be added to the mixer’s program, echo and/or foldback outputs. Extra convenience is afforded by front-panel input polarity reversal switches, individual channel and master phantom power switches, a relay actuated cue/solo system, channel and master On/Off switches, and a built-in test/calibration oscillator. Two-stage peak-indicating LEDs on the inputs, and Output VU meters with peak LEDs together give an accurate picture of signal levels and headroom. To take full advantage of your Ml524/Ml532 mixer’s many features, please read this manual carefully. CONTENTS OPERATING INSTRUCTIONS - FRONT PANEL Input Channels....................................................2 Master Modules/FB & Phones Modules....................5 Talkback Module................................................7 Output Meters....................................................8 INSTALLATION & REAR PANEL FEATURES Mixer Rear Panel ................................................9 Power Supply ..........................11 Hook-up Cables & Hum Avoidance ............12 More About the Theory of Grounding ..........12 Mixer Placement.........................12 Warning..............................12 OPTIONAL FUNCTIONS OF THE M1524/M1532____13 Adding 10dB of Gain to the Output Stages.......13 Changing the Point Where Pre-Fader Signal is Derived for the Input Channel's Echo and Foldback Sends .....................13 APPLICATIONS General Sound Reinforcement and the Mix Matrix . . 14 Stage Monitoring........................16 Recording.............................17 Television Production.....................18 Theatrical Production.....................19 MAINTENANCE Panel and Cabinet Cleaning..................21 Spare Parts............................21 Fuse Replacement .......................21 Meter Lamp Replacement ..................21 Module Removal and Replacement ............22 GENERAL SPECIFICATIONS.................23 INPUT/OUTPUT SPECIFICATIONS.............23 BLOCK DIAGRAM ........................24 LEVEL DIAGRAM.........................25 1 OPERATING INSTRUCTIONS-FRONT PANEL INPUT CHANNELS NOTE: It is not necessary that you be able to read a block diagram in order to understand and use this mixer. However, the block diagram on page 24 can be thought of as a "road map" to the mixer, one that can give you a wider perspective to evaluate the following descriptions. O CUE SWITCH Pressing the Cue button applies the channel input signal to the cue bus for preview or "solo" monitoring with the headphones and/or the Cue/TB VU meter. Any other signals being monitored in the headphones are automatically disconnected by a relay when this button is pressed down. Press the Cue button part way down for a momentary preview, or press it all the way down to engage the button; the Cue button changes color when it is engaged to remind the channel(s) is in cue mode. Although the cue signal is not affected by the Fader, it is affected by the Input Level Selector, Filter, Channel EQ, and anything connected in between the channel's Interstage Patch Out/In jacks. 0 CHANNEL FADER The Fader continuously varies the channel output level to the four program mixing busses. It affects the channel's Foldback and Echo bus sends only when their respective Pre-Post switches are in Post position. The nominal setting is "—10" position, as indicated by a heavier calibration line. When the input signal is the same level as...