User manual RANE SM 82S

[. . . ] If a source is plugged only into the Left jack and not into the Right, both Right and Left channels will be fed with the Left Input. This means that you may use them as either balanced or unbalanced, the choice being made by the way the connectors are wired. It's a good idea to always use a TRS or stereo connector in the outputs no matter which mode you are using. If a "mono" connector is used, inserting it into the output will short the ring (­) to ground and could conceivably cause a small amount of distortion to be placed on the tip (+). [. . . ] This guarantees that as the sound is panned from one side to the other, it maintains equal loudness (power) for all positions. BALANCE: In its center detent, Left and Right signals to each channel are allowed to pass at their original relative levels, therefore preserving the stereo image from devices connected to both of the Inputs. When the control is moved vertically toward the "L" position, the Right channel level is decreased while the Left channel level is maintained. The opposite occurs if the control is moved from the detent down toward the "R". 4 Input SEND Level controls: determine the amount of Post-Fade stereo Input is fed to the Loop Send buses. Each Input's stereo SEND is summed on this bus and is available at the respective LEFT and RIGHT LOOP SENDS on the rear of the mixer. 5 RETURN LEVEL control: is a rotary stereo attenuator that controls the amount of Return which is to be added to the Main Output. The unity gain position of this control is located at "7. 5. " 6 RETURN OverLoad indicator: glows red whenever the return levels exceed a level of 4 dB below clipping. 7 RETURN PAN control: is a vertical slider that controls the effect or source connected to the LOOP RETURN in the same way the Input PAN controls work (see 3 above). 8 OUTPUT LEVEL control: is a rotary stereo attenuator that controls the final signal Level at the main OUTPUT jacks. The unity gain position of this control is located at "7. 5". 9 OUTPUT OverLoad indicator: glows red any time the output level exceeds 4 dB below clipping. q OUTPUT PAN control: is a vertical slider that operates in the same fashion as the PAN control described in item 3 above. It however, determines the relative levels of the LEFT and RIGHT MAIN OUTPUTS only. Manual- REAR PANEL DESCRIPTION SM 82S 100-240 V 50/60 Hz 7 WATTS COMMERCIAL AUDIO EQUIPMENT 24TJ LEFT MAIN EXPAND OUTPUT UNBALANCED RANE CORP. MADE IN U. S. A. LEFT (MONO) LEFT (MONO) LEFT (MONO) LEFT (MONO) LEFT (MONO) LEFT (MONO) LEFT (MONO) LEFT (MONO) ALL INPUTS ARE UNBALANCED MAIN EXPAND INPUT LOOP EXPAND INPUT R OUTPUT BALANCED LOOP RETURN UNBALANCED LOOP SEND UNBALANCED 8 RIGHT 7 RIGHT 6 RIGHT 5 RIGHT 4 RIGHT 3 RIGHT 2 RIGHT 1 RIGHT RIGHT ACN 001 345 482 TIP=L, RING=R LEFT (MONO) RIGHT LEFT (MONO) RIGHT TIP=L, RING=R 8 7 6 5 4 1 2 3 1 Channel Input jacks: consist of eight pairs of unbalanced ¼" tip-sleeve jacks, used to connect any line-level signal source to the SM 82S. As indicated, only the LEFT is to be used if the Input is mono and should therefore appear in both Left and Right channels, depending on the position of the front panel PAN control. 2 MAIN EXPAND INPUT: A ¼" TRS stereo Input jack may link two or more SM 82Ss together, or accept the output from another mixer. This may also be used to sum any fixed-level stereo signal into the Main Outputs, producing a ninth stereo Input when added with 1. The Left input is on the Tip, Right is on the Ring and the Sleeve is ground. 3 LOOP EXPAND INPUT: Another ¼" TRS stereo Input, expands the stereo Loop buses of two SM 82Ss so they share the same effects loop. Connect the LEFT and RIGHT LOOP SENDS (4) of the first unit to the LOOP EXPAND INPUT of the second SM 82S. (Tip = left; Ring = right. ) 4 LOOP SEND: This pair of ¼" jacks may drive an effect or similar device which is to be returned to item 5 below. [. . . ] Please refer to the RaneNote, "Sound System Interconnection" (supplied with this manual and available at www. rane. com) for further information on system grounding. Manual- OPERATING INSTRUCTIONS CIRCUIT DESCRIPTION Learning to operate the SM 82S might be a bit easier if you glance at the Block Diagram below. Signal applied to the Inputs is acted on by a radio interference filter (we have assumed that local broadcasts should not be a part of your music) and is then routed to a stereo LEVEL control. If you are using a mono source, connect it only to the LEFT Input to send this mono signal to both the Left and Right sides of the input circuitry. The output of the Level control sections is applied to a unity gain buffer to prevent the LEVEL control from adversely interacting with downstream circuitry. [. . . ]