User manual BIAMP DPM-28

[. . . ] Do not touch terminals marked with this symbol while the unit is connected to live power. Failure to do so will compromise safe operation of this unit. Biamp Systems | 9300 S. W. Gemini Drive | Beaverton, OR | 97008 | USA | +1. 503. 641. 7287 | www. biamp. com TABLE OF CONTENTS Introduction Front & Rear Panel Features Installation Instructions Specifications Block Diagram Warranty pg. 8 11Feb09 MXA Series INTRODUCTION The MXA Series of mixer/amplifiers combines a versatile 6-input mic/line mixer with either 35, 75, 150, or 300 Watt amplification. [. . . ] Equipment shall be connected to a mains socket outlet with a protective earthing connection. Plug is main disconnecting device and it shall remain readily operable. NOTE: If the Fuse continues to blow, the amplifier may require service. Power Selector Switch: This switch selects either 120 Volt or 240 Volt AC operation. Output Connector: These screw terminals provide the speaker outputs from the amplifier. CAUTION: To reduce the risk of electric shock, do not perform any servicing unless you are qualified to do so. Output connections must be made by qualified service personnel only (refer to Installation Instructions on pg. 4). Chime Level: This control adjusts the volume level of a chime tone (see Mute/Chime below). To turn the chime tone off completely, set this control to the counter-clockwise position (min). Limiter Threshold: This control adjusts the threshold level at which the internal limiter circuit is activated. To turn the limiter off completely, set this control to the clockwise position (max). CAUTION: To avoid damage to equipment, assign phantom power only on channels being used as inputs for conderser microphones. When signal is present in a priority channel, any nonpriority channels which are assigned to Auto Mute will be muted by their selected amounts (see below). NOTE: A priority channel cannot be auto muted by another priority channel, but a priority channel can be manually muted (see below). Auto Mute assigns a (non-priority) channel to be muted whenever signal is present in any priority channel. Manual Mute assigns a channel to be muted whenever the Mute/Chime terminal is shorted to ground via a switch or contact closure. Mute Level assigns the amount of muting (-80dB or -20dB) which is applied to a channel, when triggered by either Auto Mute or Manual Mute. NOTE: -80dB is effectively complete muting (off), whereas -20dB is audible attenuation (ducking). Peak: These red LEDs will light whenever channel signal levels reach +10dB (8dB below clipping). Trim: These screw-driver controls set the channel gain (0~60dB) to compensate for different input signal levels (mic or line). Adjust these controls so the channel Peak indictors flash only on occasional peaks. Mic/Line or Tel Switch (Channel 1 only): This switch selects the proper impedance and gain for either mic/line input signals or input from 600 ohm sources. [. . . ] Electro-mechanical fans, electrolytic capacitors, and normal wear and tear of items such as paint, knobs, handles, and covers are not covered under this warranty. BIAMP SYSTEMS DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. The remedies set forth herein shall be the purchaser's sole and exclusive remedies with respect to any defective product. No agent, employee, distributor or dealer of Biamp Systems is authorized to modify this warranty or to make additional warranties on behalf of Biamp Systems. [. . . ]