User manual SAMSON S215

[. . . ] S Class Signal Processors 25 40 63 100 160 250 400 630 1K 1. 6K 2. 5K 4K 6. 3K 10K 16K CH 1 -30 -18 -6 0 +6 +18 25 40 63 100 160 250 400 630 1K 1. 6K 2. 5K 4K 6. 3K 10K 16K CH 2 -30 -18 -6 0 +6 +18 POWER 12 6 12 6 0 6 12 6 3 0 LOW CUT 12 6 0 12 6 0 6 12 6 3 0 LOW CUT DUAL 15 BAND EQUALIZER 0 6 12 BYPASS BYPASS -20 OFF 6 12 -20 OFF 25 40 63 100 160 250 400 630 1K 1. 6K 2. 5K 4K 6. 3K 10K 16K CH 1 25 40 63 100 160 250 400 630 1K 1. 6K 2. 5K 4K 6. 3K 10K 16K CH 2 DUAL 15 BAND EQUALIZER Safety Instructions Caution: To reduce the hazard of electrical shock, do not remove cover or back. Please refer all servicing to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture. The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. Important Safety Instructions 1. [. . . ] As you work with the various front panel controls, press the front panel Bypass switch(es) in and out from time to time in order to compare the effect of the equalization curve you are creating with the original input signal. Once you've created the frequency curve required for your particular application (see the "About Equalization" section on the following pages for more information), an optional locking security cover (available from your local Samson dealer) can be placed over the front panel to make sure that your settings are not inadvertently altered. If you have followed all the steps above and are experiencing difficulties with any aspect of setting up or using your S curve 215, you can call Samson Technical Support (1-800-372-6766) between 9 AM and 5 PM EST, or contact your local distributor. 7 S curve 215 System Configurations Using the S curve 215 with Active Speakers In this example the mixer's left and right outputs are connected to the S curve 215's Channel 1 and Channel 2 inputs. Then, the S curve 215's Channel 1 and Channel 2 outputs are connected to the inputs of the active (self-powered) loudspeakers. Using the S curve 215 with Passive Speakers In this example the mixer's left and right outputs are connected to the S curve 215's Channel 1 and Channel 2 inputs. Then, the S curve 215's Channel 1 and Channel 2 outputs are connected to the inputs of a 2-channel power amp. Next, the power amplifier's outputs are connected to the passive (non-powered) loudspeakers. 8 S curve 215 System Configurations Using the S curve 215 in Insert Points You can use the S curve 215 in your mixer's insert points if you want to equalize one stereo, or two mono channels, individually in the mix. In this example, the S curve 215's Channel 1 INPUT and OUTPUT are inserted on a piano channel using a 1/4-inch TRS to 2 x 1/4-inch TS "Y" cable. The S curve 215's Channel 2 INPUT and OUTPUT are connected to the bass guitar channel using the same type of insert cable. For more information on cable wiring see the S Curve 215 Wiring Guide page 15 in this manual. Using the S curve 215 for Mains and Monitors In this example, the S curve 215 is used for both the main PA speakers running a mono mix, and for the monitor mix, also in mono. For the main PA, the mixer's MONO output is connected to the S curve 215's Channel 1 INPUT. Then, the S curve 215's Channel 1 OUTPUT is connected to the input of the right main PA active (self-powered) loudspeaker. The left main PA speaker is connected by "daisy-chaining" from the right. For the monitor mix, the mixer's AUX output is connected to the S curve 215's Channel 2 INPUT. The S curve 215's Channel 2 OUTPUT is connected to the input of the monitor power amplifier operating in bridge mode. Finally, the power amplifier's outputs are connected to the passive (non-powered) monitor loudspeakers. 9 S curve 215 System Configurations Using Two S curve 215's for Mains and Monitors 10 In this example, two S curve 215's are used for the stereo main and for the 2-channel monitor mix. The mixer's left and right outputs are connected to the first S curve 215's Channel 1 and Channel 2 inputs for the main PA speakers. Then, the first S curves 215's Channel 1 and Channel 2 outputs are connected to the inputs of the power amplifier for the main speakers. For the monitor mix, the mixer's AUX1 and AUX2 outputs are connected to the second S curve 215's Channel 1 and Channel 2 inputs. Then, the second S curves 215's Channel 1 and Channel 2 outputs are connected to the inputs of the 2-channel power amp. Finally, the power amplifiers outputs are connected to the passive (non-powered) monitor loudspeakers. About Equalization The S curve 215 gives you fine control over shaping a sound, using a process called equalization. But there are few areas of sound engineering more misunderstood than equalization, and, just as good EQ can really help a sound, bad EQ can really hurt it, so read on. . . Every naturally occurring sound consists of a broad range of pitches, or frequencies, combined together in a unique way. [. . . ] While watching the RTA, use the front panel Equalizer sliders to make corrections to the signal, boosting any dips in the measured frequency response and attenuating any peaks. Repeat the procedure three or four times from different listening positions, averaging the results if necessary to come up with an equalization curve that works well at all positions. If you get drastically different measurements at different listening positions, you may need to reposition various loudspeakers or change the amount of power applied to some of them. Bear in mind that an analyzer "listening" to pink noise is no substitute for the human ear listening to actual program material. [. . . ]