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Samson 215 manual

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Table of contents for the manual

  • Page 1

    DUAL 15 BAND EQUALIZER 0 6 6 12 12 0 6 6 12 12 0 6 6 12 12 0 6 6 12 12 0 6 3 -20 OFF BYPASS POWER 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K CH 2 LOW CUT CH 2 0 [...]

  • Page 2

    Safety Instr uctions Important Safety Instructions 1. Please read all instructions before operating the unit. 2. Keep these instructions for future reference. 3. Please heed all safety warnings. 4. Follow manufacturers instructions. 5. Do not use this unit near water or moisture. 6. Clean only with a damp cloth. 7. Do not block any of the ventilati[...]

  • Page 3

    T able of Contents Introduction 2 System Features 3 Controls and Functions Front Panel 4 Rear Panel 5 Setting Up and Using the S curve 215 6 - 7 System Configurations 8 - 10 About Equalization 1 1 Grounding T echniques 12 Using a Patchbay 12 Using the S curve 215 with an RT A 13 Using the S curve 215 to “Ring Out” a Monitor System 14 S curve 21[...]

  • Page 4

    2 Congratulations on purchasing the Samson S curve 215 2/3 Octave, Stereo, 15 Band Constant Q Graphic Equalizer! Although this product is designed for easy operation, we suggest you take some time out first to go through these pages so you can fully understand how we’ve implemented a number of unique features. The S curve 215 is a professional qu[...]

  • Page 5

    3 S cur ve 215 F eatures The Samson S curve 215 Graphic Equalizer utilizes state-of-the-art, Constant Q filtering technology for precise tonal control. Here are some of it’s main features: • The S curve 215 has 15 bands of equalization, with each frequency band representing 2/3 of an octave in the 25 Hz to 16 kHz range. • Constant Q circuitry[...]

  • Page 6

    4 DUAL 15 BAND EQUALIZER 0 6 6 12 12 0 6 6 12 12 0 6 6 12 12 0 6 6 12 12 0 6 3 -20 OFF BYPASS POWER 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K CH 2 LOW CUT CH 2 [...]

  • Page 7

    5 A AC input - Connect the supplied heavy gauge 3-pin “IEC” power cable here. B Balanced XLR jack input - Electronically balanced XLR jack input. Wiring is as follows: pin 2 hot, pin 3 cold, and pin 1 ground. C Balanced XLR jack output - Electronically balanced XLR jack output. Wiring is as fol- lows: pin 2 hot, pin 3 cold, and pin 1 ground. D [...]

  • Page 8

    6 SETTING UP THE S cur ve 215 SETTING UP THE S cur ve 215 Setting up your S curve 215 Graphic Equalizer is a simple procedure which takes only a few minutes: 1. Remove all packing materials (save them in case of need for future service) and decide where the unit is to be physically placed—it can be used free-standing or mounted in a standard 19&q[...]

  • Page 9

    SETTING UP THE S cur ve 215 7 7. Press the front panel Power switch in order to turn on the S curve 215. Press the Bypass switches in to activate the equalizer . Note that audio signal will be muted for approximately five seconds until the relay power-on circuitry is activated (at which time you’ll hear a click and the audio signal will be unmute[...]

  • Page 10

    8 S cur ve 215 Sy stem 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 [...]

  • Page 11

    S cur ve 215 Sy stem Configurations 9 Using the S curve 215 for Mains and Monitors 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 pia[...]

  • Page 12

    10 S cur ve 215 Sy stem Configurations U sing T wo S curve 215’ s for Mains and Monitors 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 cur[...]

  • Page 13

    11 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 frequ[...]

  • Page 14

    Grounding T echniques Hum and buzz are the biggest enemies you face when interconnecting a large number of different pieces of equipment to one another. This is because each piece of equipment may operate at a marginally different voltage (this difference is called potential ) and, when two devices at slightly different potential are physically con[...]

  • Page 15

    13 Using the S cur ve 215 with an RT A An RT A (Real T ime Analyzer) is a device which measures the relative levels of multiple frequency areas. This device, in conjunction with a pink noise generator , is the perfect companion for your S curve 215. T ogether with a high quality microphone, these tools allow you to fine tune the overall fre- quency[...]

  • Page 16

    14 Using the S cur ve 215 to Remo ve Feedback One of the most important applications for the S curve 215 is removing feedback from an onstage monitor system. This procedure is sometimes called “ringing out,” since feedback usually begins with a slight ringing sound at the resonant frequencies where the loop between microphone and speaker is lou[...]

  • Page 17

    15 S cur ve 231 Wiring Guide Tip (signal) Sleeve (ground) Tip (signal) Sleeve (ground) Tip (signal) Sleeve (ground) Tip (signal) Sleeve (ground) 2 3 1 Male XLR Hot (2) Cold (3) Common (1) End View Solder P oints 12 3 Tip (signal) Sleeve (ground) Cold (Pin 3) (no connection) Send Send Send Send Return Return Return Return 1 3 2 2 3 1 Hot Cold F emal[...]

  • Page 18

    16 Specifications Center frequencies (Hz) 25, 40, 63, 100, 160, 250, 400, 630, 1 k, 1.6 k, 2.5 k, 4 k, 6.3 k, 10 k, 16 k V ariable range ± 12 dB Frequency response (unity) <10 Hz to 90 kHz ± 3 dB THD+N, unity gain Less than 0.01% (20Hz to 20kHz) Max. Output Level gain +6 dB High pass filter 80 Hz (18 dB/ oct) Noise (with 20 kHz LPF , all fader[...]

  • Page 19

    17 S cur ve 215 Block Diagram[...]

  • Page 20

    Samson T echnologies Corp. 575 Underhill Blvd. P .O. Box 9031 Syosset, NY 1 1791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) Fax: 516-364-3888 www .samsontech.com[...]