User manual AUSTRALIAN MONITOR TX6000

[. . . ] Generally, a small increase of the treble control makes a system sound `brighter'. If no treble cut or boost is required, the control should be left in the centre (0) position. Master Control The master control sets the overall output level of the TX6000. When setting up levels, please ensure that proper gain structure practices are followed. In other words, it is not advisable to run the input channels at 10 and the output level at 1. [. . . ] The tape output provides a maximum of 700mV into 10K ohms making it ideal for connection to most standard tape recorders. This output is sourced before the master gain control and as such the tape output level is not influenced by the operation of the master gain control. Microphone Inputs The TX6000 includes six female XLR inputs which accept 200 ohm balanced or unbalanced microphones. Pin 3 = Active Negative (-). Line Inputs The TX6000 includes six dual RCA inputs for unbalanced line or aux devices such as tape recorders, video players, tuners etc. Channel 6 has been designed to accept higher level line inputs such as CD players. When using a CD player with the TX6000, please ensure it is plugged into the channel 6 line input. Dual RCA connectors are provided to allow for the simple connection of domestic stereo devices such as tape desks and CD players. Both the left and right outputs from these devices can be connected to the dual RCA's and will be summed to mono within the TX6000. Note: Each input of the TX6000 has both a microphone and line connection. Please note that only one of these (on each channel) should be used at the same time. VCA Control An external pot (500K) can be connected to the TX6000 for remote control of the master level. The external pot is governed by the master level of the mixer allowing the installer to set the volume, then lock the mixer in a rack, leaving the user with just a master volume control that cannot go beyond the level set on the master (front panel) control. Connection is via a 2 wire euro block connector on the rear panel of the mixer. Phantom Power The microphone inputs on the TX6000 all provide +18v DC phantom power which is required for electret microphones. If desired, phantom power can be defeated via an internal jumper which is located on the output board near the line output XLR socket on the rear panel (position X4 on the output board). The default setting is with the link in the `on' position, shorting the centre pin and the pin closest to the rear of the TX6000. To turn phantom power off, move the link to short the centre pin and the pin closest to the front of the TX6000. Note: It is necessary to disconnect the power cord and remove the lid from the mixer before operating this switch. Internal Adjustments Note: The following adjustments involve access to the inside of the TX6000 and should only be attempted by a qualified technician. Always turn off the AC power and remove the AC power cord before accessing the inside of the TX6000. Optional Accessories Tone Generator Module An optional ATC5488 4 tone generator board is available for the TX6000. This internally mounted PCB can be easily fitted and plugs directly into a socket provided on the pre-amp circuit board inside the TX6000. The socket is located on the front board behind the input 5 level control. When any tone from the ATC5488 is activated (via contact closure) all inputs will automatically mute except for input 1. Tones available on the ATC5488 tone generator board are: Evacuation Tone Alert Tone Bell Tone Pre Announce Chime Muting Modules Two optional VOX (signal activated) muting modules are available for the TX6000. The TX3010 mutes channels 2-6 from input 1 while the TX3014 is a dual level muting module which mutes channels 2-6 from input 1 and 3-6 from input 2. Both modules plug into a socket provided on the pre-amp circuit board inside the TX6000. When activated, all other channels are muted TX3014 Muting Module: Provides dual priority muting. [. . . ] Do not connect the inputs / outputs of amplifiers or consoles to any other voltage source, such as a battery, mains source, or power supply, regardless of whether the amplifier or console is turned on or off. Do not run the output of any amplifier channel back into another channel's input. Do not parallel- or series-connect an amplifier output with any other amplifier output. Australian Monitor Audio Inc is not responsible for damage to loudspeakers for any reason. [. . . ]