User manual AUSTRALIAN MONITOR SA60

[. . . ] Adjusting the bass control in a clockwise direction will provide up to +12 dB of bass boost @ 100 Hz. Adjusting the bass control in a counter-clockwise direction will provide up to -12 dB of bass cut @ 100 Hz. Treble Control Setting this control in the centre "zero" position will give an overall flat treble response to the output of the amplifier. Adjusting the treble control in a clockwise direction will provide up to +9 dB of treble boost @ 10 kHz. Adjusting the treble control in a counter-clockwise direction will provide up -9 dB of treble cut at 10 kHz. Master Output Control This control adjusts the overall output level of the amplifier depending on the levels set for the individual input mix channels as detailed above. [. . . ] When both outputs are used simultanously, ensure that neither output is loaded to maximum. 24 Volt DC Power Source Connection Two post style terminals allow for the connection of an external 24 VDC battery for applications where PA system operation is critical. The black terminal post is for connection to the negative (-) terminal. A trickle charge circuit provides a maximum 300mV automatically to a stand-by battery connected to the 24 VDC input (trickle charge on SA120 only). DC Fuse Holder Remove with a screwdriver if access is required. The DC fuse rating is 10 Amps Slow Blow for the SA120 and 5 Amps Slow Blow for the SA60. Insert Point A TRS jack socket insert point (6. 35mm) is provided which enables a graphic equaliser, FBX Feedback Exterminator or similar product to be connected between the mixer and power amp stages. Sleeve = Ground. Tape Output Two RCA style output connectors are provided for a line level tape output. A maximum level of 350mV into 10K ohms is provided which is ideal for a 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. Line Output A male XLR, balanced transformer isolated output is provided to connect to additional power amplifiers. A maximum output level of 700mV makes it suitable for driving most power amplifiers or similar devices. Pin 3 = Active Negative (-). Line Inputs Six pairs of RCA input connectors accept unbalanced line or auxiliary inputs for channels 1 through 6. The pairs are provided per channel to allow simple connection of stereo program sources which are summed to mono once connected. Channel 6 accepts higher level inputs such as a CD player or DVD player. For best gain structure, always connect high level program sources to input 6. Microphone Inputs Six female XLR accept 200 ohm balanced or unbalanced microphone inputs. If using unbalanced microphones, ensure that phantom power (see below) is switched off, otherwise damage to the microphones is possible. Phantom Power 18 Volts DC phantom power is provided for all microphone inputs. The factory setting is for phantom power to be switched on so this switch can be used to disconnect phantom power (from all six inputs) if required. It is necessary to disconnect the power cord and remove the lid from the amplifier before operating this switch. Tone Generator Four separate tones are available on the optional ATC5488 tone generator board. This internally mounted PCB is easily fitted and plugs directly into a socket provided on the internal circuit board PCB6178. When any tone from the ATC5488 is activated, all inputs, except for input 1, will automatically mute. Tones available on the ATC5488 tone generator board are: Evacuation Tone (to Australian Standard AS2220. 1. 2) Alert Tone (to Australian Standard AS2220. 1. 2) Bell Tone Pre Announce Chime Muting Modules Two separate VOX muting modules are available for the SA series amplifiers. The modules plug directly into a socket provided on the internal circuit board PCB6178. The two muting modules are: TX3014 - Provides two levels of muting with the main priority for input one, which mutes all other inputs and secondary priority for channel two, which mutes all inputs except for input one. [. . . ] Never hold a power switch in the "ON" position if it won't stay there itself!Do not use the unit near stoves, heat registers, radiators, or other heat producing devices. Do not operate equipment on a surface or in an environment which may impede the normal flow of air around the unit, such as a bed, rug, weathersheet, carpet, or completely enclosed rack. If the unit is used in an extremely dusty or smoky environment, the unit should be periodically "blown free" of foreign matter. [. . . ]