Page 2 - Safety Instructions
Safety Instructions 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...
Page 3 - Table of Contents
Table of Contents Introduction 2 System Features 3 Controls and Functions Front Panel 4 Rear Panel 5 Setting Up and Using the S curve 131 6 - 7 System Configurations 8 - 10 About Equalization 11 Grounding Techniques 12 Using a Patchbay 12 Using the S curve 131 with an RTA 13 Using the S curve 131 to...
Page 4 - Introduction
2 Congratulations on purchasing the Samson S curve 131 1/3 Octave, single channel, 31 Band ConstantQ Graphic Equalizer! Although this product is designed for easy operation, we suggest you take sometime out first to go through these pages so you can fully understand how we’ve implemented a numberof ...
Page 5 - S cur ve 131 Features
3 S cur ve 131 Features The Samson S curve 131 Graphic Equalizer utilizes state-of-the-art, Constant Q filtering technology forprecise tonal control. Here are some of it’s main features: • The S curve 131 has 31 bands of equalization, with each frequency band representing 1/3 ofan octave in the 20 H...
Page 6 - Controls and Functions; FRONT PANEL LAYOUT
4 1 Equalizer level sliders - Independent Equalizer sliders are provided for each frequency area (The S curve 131 provides 31 frequency areas).Calibration markings on either side of each Equalizer sliderallow you to cut or boost each frequency area. As described below, the exact action of the Equali...
Page 7 - REAR PANEL LAYOUT
5 Range switch - When pressed in, the LED in the switch lights and the Equalizer sliders cut or boost each frequency area by up to 6 dB, allowing fine frequency curves to be set. When out (in the up position), theEqualizer sliders cut or boost each frequency area by up to 12 dB, allowing course cont...
Page 8 - SETTING UP THE S cur ve 131
6 SETTING UP THE S cur ve 131 SETTING UP THE S cur ve 131 Setting up your S curve 131 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 ...
Page 10 - S cur ve 131 System Configurations
8 S cur ve 131 System Configurations Using the S curve 131 with Active Speakers In this example the mixer’s mono output is connected to the S curve 131’s input. Then, the S curve 131’s output is connected to the input ofthe first active (self-powered) loudspeaker. The second loudspeaker is connected...
Page 12 - Using Two S curve 131’s for Mains and Monitors
10 S cur ve 131 System Configurations Using Two S curve 131’s for Mains and Monitors In this example two S curve 131’s are used for the stereo main and for the 2-channel monitor mix. The mixer’s left and right ou tputs are connected to the first pair of S curve 131’s inputs for the main PA speakers....
Page 13 - About Equalization
11 The S curve 131 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 EQcan really help a sound, bad EQ can really hurt it, so read on... Every naturally occurring sou...
Page 14 - Grounding Techniques
Grounding Techniques Hum and buzz are the biggest enemies you face when interconnecting a large number of different pieces ofequipment 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 ...
Page 15 - Using the S cur ve 131 with an RTA
13 Using the S cur ve 131 with an RTA An RTA (Real Time Analyzer) is a device which measures the relative levels of multiple frequencyareas. This device, in conjunction with a pink noise generator, is the perfect companion for your Scurve 131. Together with a high quality microphone, these tools all...
Page 16 - Using the S cur ve 131 to Remove Feedback
14 Using the S cur ve 131 to Remove Feedback One of the most important applications for the S curve 131 is removing feedback from an onstagemonitor system. This procedure is sometimes called “ringing out,” since feedback usually begins witha slight ringing sound at the resonant frequencies where the...
Page 17 - S cur ve 231 Wiring Guide; Unbalanced 1/4” to RCA Cable; S cur ve 131 Wiring Guide; Balanced XLR to XLR Cable
15 S cur ve 231 Wiring Guide 2 3 1 1 2 3 1 3 2 2 3 1 1 2 3 2 1 3 Unbalanced 1/4” to RCA Cable Un-Balanced XLR to RCA Cable S cur ve 131 Wiring Guide There are several ways to interface the S curve 131, depending on your exact monitoring set-up.Follow the cable diagrams below for connecting your moni...
Page 18 - Specifications; Boost
16 Specifications 1: Center frequencies (Hz) 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1 k, 1.25 k, 1.6 k, 2 k, 2.5 k, 3.15 k, 4 k, 5 k, 6.3 k, 8 k, 10 k, 12.5 k, 16 k, 20 k 2: Variable range ±6 dB or ±12 dB 3: Frequency response (unity) <10 Hz to 90 kHz ±3 d...
Page 19 - S cur ve 131 Block Diagram
Page 20 - Samson Technologies Corp.
Samson Technologies Corp. 575 Underhill Blvd. P.O. Box 9031 Syosset, NY 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) Fax: 516-364-3888 www.samsontech.com
