User manual PEAVEY AUTOMIX 4

[. . . ] Automix 4 TM Four Channel Mini Automatic Mixer User Manual Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. CAUTION: Risk of electrical shock -- DO NOT OPEN!CAUTION: To reduce the risk of electric shock, do not remove cover. [. . . ] For proper automatic mixing, the signal gain of the external component MUST be 0 db (unity). Care should be taken when considering the distance, type of wire and type of external connection. This example shows a "loop" to an external device, such as an equalizer or compressor. The INS OUT connection is made after the Channel's automatic gain stage, and just before the summing stage. To enable this feature, the INS BYPASS/ENABLE switch must be in the ENABLE mode. Line In Shield Shield Line Out Figure 5. Typical Insert Wiring From external component's line output. To external component's line input. In this example, the link switch is in it's normal BYPASS mode. The INS OUT connector provides a "tap" of the Channel's automatically processed output signal just before the summing bus. When configuring the Automix 4 with direct outputs, the master balanced output and the master line output are still active. You can also use this feature to provide four direct outputs, one for each Channel. In this example, the INS BYPASS/ENABLE switch should be in BYPASS mode. Shield Line Out Figure 6. Direct Channel Out Wiring Direct Channel Output. Page 12 http://aa. peavey. com copyright 2000 All Rights Reserved Connections THIS PAGE LEFT INTENTIONALLY BLANK Peavey Electronics Corp Page 13 Automix 4 User Manual Configuration Since the Automix 4 is an analog product, there is not a lot of configuration to worry about. No software, no data cables, no networks and no headaches. However, there are a few things to remember while you begin to use your new Automix 4 mixer. The Automix 4 is shipped from the factory ready to go. You should be able to follow the steps below, and get audio through the unit. The first step is to calibrate your gain settings for the inputs. Each microphone input has a Gain Control and a Clip LED. These, in conjunction with the Master Meter work together to provide a visual indication of the Channel's gain behavior. To properly adjust the Automix 4 for optimal performance, follow these simple steps for each input Channel: Connect a microphone to any of the inputs. For proper operation, use only low impedance, balanced, three-wire microphones. Adjust the Channel Gain Control to its minimum position, or fully counterclockwise for the Channel you are working on. It is important to use a properly sized Phillips head screwdriver for this adjustment. Take care not to force the control, or damage may occur. Figure 7. [. . . ] IEC receptacle for AC power. PERFORMANCE (Test Conditions: 120 Vrms, 60 Hz line voltage maintained throughout testing. Reference: 0 dBu = 0. 775 Vrms. ) INPUT SPECIFICATIONS Equivalent Input Noise: -128 dBu (Rs = 150 Ohms), typical Preamp Gain Range: 10 dB -65 dB (MIC inputs) -13 dB -44 dB (LINE inputs) Input Impedance: 2K Ohms (MIC inputs) >10K Ohms (LINE inputs) >10K Ohms (INSERT inputs) Priority (Channels 1 and 2): 0 dB to 9 dB Phantom Power: +48 Volts Input Sensitivity: MIC Inputs -61 dBu LINE Inputs -40 dBu INSERT Inputs +4 dBu Maximum Input Level: MIC Inputs +12 dBu LINE Inputs +30 dBu INSERT Inputs +21 dBu Common Mode Rejection: >70 dB 20 Hz - 20 kHz GENERAL SPECIFICATIONS Channel Clip LED: Red LED lights 2 dB before clipping Also lights to indicate mute on Channel 1 and 2 inputs Output Level Indicators: Red LED lights 2 dB before clipping. Peavey Electronics Corp Yellow LED lights at +4 dBu. Power Requirements: 120 V RMS, 60 Hz Domestic 230 V RMS, 50/60 Hz Export 15 watts nominal OUTPUT SPECIFICATIONS Frequency Response: 75 Hz (-3 dB) to 20 kHz (-1 dB) (at +4 dBu; ref: 1 kHz; 75 Hz HPF) THD: <0. 1% at +4 dBu (22 Hz - 22 kHz BPF) Signal/Noise: (Rs = 150 ohms; 30 kHz LPF) >85 dB (all controls fully CCW) Output Impedance: <200 Ohms Nominal Output Level: LINE Level Output +4 dBu MIC Level Output -26 dBu INSERT Outputs +4 dBu Maximum Output Level: LINE Level Output +21 dBu (Hi-Z load) +18 dBu (600 load) MIC Level Output -9 dBu (Hi-Z load) -12 dBu (600 load) INSERT Outputs +21 dBu (Hi-Z load) Page 21 Automix 4 User Manual Figure 11. [. . . ]