Rane HC6S HC6S Manual - Page 7

OPERATING INSTRUCTIONS MASTER STEREO INPUTS Apply a source program to the MASTER INPUTS and turn up the MASTER LEVEL until the green signal-present LEDs light up. Further adjustment of this control raises or lowers the volume level in all headphones simultaneously, i.e., all those being driven from the MASTER INPUTS. The MASTER LEVEL does not affect channels driven from the direct stereo INs. INDIVIDUAL LEVEL CONTROLS These adjust the level in each set of headphones to the desired loudness. When using a direct stereo IN, only this control affects the volume in the headset-the MASTER LEVEL is bypassed. SIGNAL-PRESENT LEDS These light up with any signal input above -20 dBu. They are located in the signal path after the MASTER INPUTS and before the individual LEVEL controls. This means that adjusting the MASTER LEVEL affects the SIG LEDs, while adjusting the individual LEVEL controls does not. When using a direct stereo IN, the LED responds to that Input only. This means these indicators aid in quickly identifying which stages are driven by the MASTER INPUTS and which by the direct stereo INs: Simply turn the MASTER LEVEL up and down and observe which LEDs respond. These are the channels being driven by the MASTER INPUTS. DIRECT STEREO INPUTS These allow completely independent operation of up to six different stereo programs. These Inputs are stereo only, and wired to accept unbalanced signals, using the tip=left, ring=right convention. Unbalanced mono sources require using a stereo ¼" TRS plug and shorting the tip and ring together. Any channel not directly driven is automatically driven from the MASTER INPUTS. When using balanced mono sources, internal jumpers must be moved as in Figure 2 below. Jumpers are wired at the factory for stereo. Jumpers must be moved for balanced mono operation. Each jack is jumpered separate, so any combination of input types is possible within a single HC6S. SHOCK HAZARD WARNING: Any service requiring access to the inside of the unit (including changing jumpers and switch settings) should be done by qualified service personnel. Figure 2. Stereo Unbalanced / Mono Balanced Jumpers Shipped as Stereo Unbalanced. STEREO / MONO SWITCH This serves the basic function of allowing both Left and Right channels of all headphones to be driven from a mono MASTER INPUT. In some instances a stereo program can be confusing for live monitoring purposes, due to extreme separation and the increased difficulty in perceiving several different volume levels. Using the MONO / STEREO switch converts the system to mono operation to better suit these particular monitoring needs. FRONT PANEL OUTPUT JACKS These jacks parallel the rear OUTs, providing easy access patching into any channel for cueing or additional monitoring. When using more than six sets of headphones at once, keep two things in mind: 1. There are still only six LEVEL controls. Additional headsets must double up with those already in use. To avoid intolerable volume differences to two listeners on the same channel of the HC6S, use headphones of the same make and model. 2. The HC6S has limited power output. The more headphones you connect to it, the less power there is available to each set, and the more strain on the HC6S. Blasting 10 or 12 sets of low impedance headphones is asking too much from the HC 6S. To lessen the power drain from the HC6S, use only high impedance (100 Ω or greater) headphones when paralleling. To channels 2 - 6 ©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com Manual-4