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Table of Contents

Introduction

System Features

Controls and Functions

Front Panel

Rear Panel

Setting Up and Using the S curve 131

6 - 7

System Configurations

8 - 10

About Equalization

Grounding Techniques

Using a Patchbay

Using the S curve 131 with an RTA

Using the S curve 131 to Remove Feedback

S curve 131 Wiring Guide

Specifications

Pass-Band Graphs

Block Diagram

Printed June, 2003

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

Содержание S curve 131

Страница 1: ...S C l a s s S i g n a l P r o c e s s o r s 31 BAND EQUALIZER ...

Страница 2: ...nvenience receptacles and at the point at which they exit from the unit 11 Unplug this unit during lightning storms or when unused for long periods of time 12 Refer all servicing to qualified personnel Servicing is required when the unit has been damaged in any way such as power supply cord or plug damage or if liquid has been spilled or objects have fallen into the unit the unit has been exposed ...

Страница 3: ...chniques 12 Using a Patchbay 12 Using the S curve 131 with an RTA 13 Using the S curve 131 to Remove Feedback 14 S curve 131 Wiring Guide 15 Specifications 16 Pass Band Graphs 16 Block Diagram 17 Copyright 2003 Samson Technologies Corp Printed June 2003 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...

Страница 4: ...eatures of the S curve 131 as well as a guided tour through the front and rear panels step by step instructions for using the unit suggested applications for use with a patch bay a Real Time Analyzer RTA or for ringing out monitor systems reference appendices and full specifications You ll also find a warranty card enclosed please don t forget to fill it out and mail it so that you can receive onl...

Страница 5: ...low noise circuity ensures superb audio fidelity Variable Low Cut Filter for removing rumble and floor noise can be adjusted from 80 to 400 Hz Electronically balanced XLR and TRS inputs and outputs Front panel hard wired relay controlled Bypass switches with dedicated Bypass LEDs allow the equalization circuitry and output level control to be activated or deactivated Main Level control enables out...

Страница 6: ...B if the corresponding Range switch is pressed in or 12 dB if the corresponding Range switch is not pressed in When moved all the way down as indicated by the blue 24 dB label the frequency area is attenuated by 12 dB if the corresponding Range switch is pressed in or 24 dB if the corresponding Range switch is not pressed in 2 Main Output level slider Use this to adjust the output level of signal ...

Страница 7: ...T switch When pressed in the LED in the switch lights yellow and the variable highpass filter is applied to the signal Using the Low Cut can be highly effective in removing rumble and other low fre quencies 9 LOW CUT control When the Low Cut switch is pressed in the varable low cut control is active You can adjust the point at which the low frequencies begin to roll off with a frequency range of f...

Страница 8: ...conjunction with mixer insert points or in an effects send return loop The illustrations on pages 8 10 show each of these typical configurations Choose the configuration that is best for your application and then begin by making the S curve 131 input connections using either the XLR or 1 4 TRS connectors on the rear panel WARNING Both the XLR and 1 4 TRS inputs should not be connected simultaneous...

Страница 9: ...iment by moving each of the Equalizer sliders up and down carefully listening to the audible result on the audio signal Bear in mind that the very lowest and highest frequency areas may have lit tle or no effect on some signals If there is significant low frequency noise rumble in the signal engage the Low Cut switch Starting with the Low Cut frequency control fully counter clockwise adjust the co...

Страница 10: ...connected to the first using the first loudspeaker s extension output Using the S curve 131 with Passive 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 of a 2 channel power amp running in mono bridge mode Next the power amplifier s mono output is connected to the passive non powered loudspeakers See t...

Страница 11: ... 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 131 s input Then the S curve 131 s 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 moni tor mix the mixer s AUX1 output is connected...

Страница 12: ...of S curve 131 s inputs for the main PA speakers Then the outputs are connected to the inputs of the active self powered loudspeakers For the monitor mix the mixer s AUX1 output is connected to the third S curve 131 and AUX2 output is connected to the fourth S curve 131 s input Then the outputs are connected to the inputs of the 2 channel power amp Finally the power amplifiers outputs are connecte...

Страница 13: ...nds in one frequency range obscure softer sounds in the same range by cutting EQ notches in a loud signal you can actually make room for a softer one to shine through And try not to think of EQ as a miracle worker no amount of equalization can put a singer in tune or remove the distortion from an overloaded input signal The key is to get the signal right in the first place by using correct gain st...

Страница 14: ...rence by planning your audio electrical and computer cable runs so that they are as far apart from one another as possible and so they don t run parallel to one another If they have to cross try to ensure that they do so at a 90 angle that is perpendicular to one another In particular try to keep audio cabling away from external AC DC adapters If your S curve 131 is in a fixed location such as a r...

Страница 15: ... this will rarely if ever be the case 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 posi tions If yo...

Страница 16: ...uts set the Range switch so it is off in the 12 position Then raise all front panel Equalizer sliders to their upper most position because the Cut Only switch is on this represents flat response no cut or boost Next power up all audio equipment turning on the amplifiers last and using one monitor output only gradually turn up the volume while a performer is speaking or singing into the primary mic...

Страница 17: ... XLR to RCA Cable S curve 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 monitor system Balanced XLR to XLR Cable Balanced 1 4 to 1 4 Cable Un Balanced 1 4 to 1 4 Cable 1 4 TRS Insert Cable ...

Страница 18: ... Frequency response unity 10 Hz to 90 kHz 3 dB 4 THD N unity gain Less than 0 01 20Hz to 20kHz 5 Main level Max gain 6 dB 6 Low cut filter variable 15 to 200 Hz 7 Noise with 22 kHz LPF all faders flat 85 dB 8 Cut Only mode 12 dB 1 dB Max 9 Dimensions 19 in w x 7 5 d x 1 75 h 482 mm w x 190 d x 44 h 10 Weight 5 1 lb 2 31 kg Boost Cut 20 50 100 200 500 1K 2K 5K 10K 20K 12 10 5 0 5 10 12 RESPONSE dB ...

Страница 19: ...17 S curve 131 Block Diagram ...

Страница 20: ...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 ...

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