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Фрагмент инструкции
Electrostatic charges might affect the operation of the POWERPLAY PRO! 1 2 3 2 1 3 Pin 1 Output Cable Input Pin 2 = (+) Signal Positive Pin 3 = (-) Signal Shield (+) Signal + Hum (-) Signal + Hum Negative (+)Hum + Signal (-)Hum + Signal 2 x Signal Ground RFI and Hum = Signal + 6 dB Fig. 3.1: Compensation of interference with balanced connections Fig. 3.2: Connector for the headphones, AUX IN and DIRECT IN 3. INSTALLATION 10 Unbalanced use of mono 1/4" jack plugs Ring Balanced use of stereo 1/4" jack plugs Balanced use with XLR connectors 1 2 3 2 1 3 Input Output Tip = Signal Tip = hot (+ve) Sleeve = Ground / Shield Sleeve = Ground / Shield Tip Tip Sleeve Sleeve Strain relief clamp Strain relief clamp Ring = cold (-ve) For connection of balanced and unbalanced plugs, ring and sleeve have to be bridged at the stereo plug. 1 = Ground / Shield 2 = hot (+ve) 3 = cold (-ve) For unbalanced use pin 1 and pin 3 have to be bridged Fig. 3.3: Different plug types 4. CONTROLS Fig. 4.1: POWERPLAY PRO front panel The BEHRINGER POWERPLAY PRO has four identical channels and provides 3 illuminated push-button switches, 2 rotary controls, 2 jacks and 4 LEDs per channel. The common main section contains 1 rotary control, 1 jack and 4 LEDs. 4. CONTROLS 4.. The front panel control element. E 1 2 3 4 5 6 7 8 9 10 11 Fig. 4.2: Controls on the front pane. The DIRECT IN stereo input is used to apply the signals coming from an external source. When usin. the DIRECT IN input, the MAIN signal applied on the rear panel is interrupted automatically (fig. 3.2). The INPUT LEVEL control adjusts the level of the input signal inserted via the rear panel MAIN INPU. or DIRECT IN connectors. The 4-digit INPUT LEVEL meter informs you about the current input level within a range from -24 dB. to +6 dBu. The HEADPHONE OUT is connected in parallel to the rear panel output connectors, and provides a. additional option to monitor the individual channels. When the unit is permanently installed in rack, thi. proves to be a useful function. A further input signal can be added to the MAIN and/or DIRECT IN signal via the AUX IN (fig. 3.2). The L MUTE switch mutes the left input signal. This R MUTE switch mutes the right input signal. With the MONO switch each of the amplifiers can be switched between stereo to mono mode, an. vice versa. The BALANCE control determines the ratio level between the MAIN/DIRECT IN signal and the inpu. signa. applied to the AUX IN input. The OUTPUT LEVEL control determines the volume of the individual amplifiers and refers to both the lef. and right channels. The 4-digit OUTPUT LEVEL meter informs you about the current output level within a range fro. -24 dBu to + 12 dBu. If the CLIP LED lights up, you have to decrease the INPUT GAIN, otherwis. distortion will raise. 4. CONTROL. 1. 4.. The elements of the rear control pane. Fig. 4.3: The control elements of the rear pane. 12 FUSE HOLDER / VOLTAGE SELECTOR. Please make sure that your local voltage matches th. voltage indicated on the unit, before you attempt to connect and operate the POWERPLAY PRO. Blown fuses may only be replaced by fuses of the same type and rating. 13 MAINS CONNECTION. Use the enclosed power cord to connect the unit to the mains. Please als. note the instructions given in the .INSTALLATION. chapter. 14 AUDIO IN. These are the audio inputs of your POWERPLAY PRO, available both as balanced 1/4. jack and XLR connectors. 15 AUDIO OUT. These are the audio outputs of your POWERPLAY PRO. Matching phone jack and XL. connectors are wired in parallel. 16 HEADPHONE OUT 1. These are the headphone outputs of channel 1. 17 HEADPHONE OUT 2. These are the headphone outputs of channel 2. 18 HEADPHONE OUT 3. These are the headphone outputs of channel 3. 19 HEADPHONE OUT 4. These are the headphone outputs of channel 4. 5. APPLICATIO. 5.. Using the main input. Connect a program source to the rear panel MAIN inputs and connect the headphone cable to one of th. appropriate outputs. Turn up the INPUT LEVEL and the BALANCE controls to center position. The INPU. LEVEL control is used to increase or decrease the general volume of all headphones controlled via the MAI. inputs, while the individual OUTPUT LEVEL controls are used to adjust the desired channel volume. 5.. Using the AUX IN input. Basically, the AUX IN inputs are used to add an additional input signal to the master signal, with the corre. sponding BALANCE control determining the volume ratio between the two signals. The aux function supercede. the previously required monitor mixer and allows for an application that is frequently used in practice. Example: suppose a vocalist wants to record a vocal track that is to be added to already existing instrumenta. tracks. Up to now, it has been common practice that the vocalist listens to the playback by pressing . headphone pad against one ear, while controlling his/her own voice with the other . free . ear. This kind of application can be achieved much more easily and conveniently ...