S Class Signal Processors STEREO/MONO CROSSOVER
Safety Instructions/Consignes de sécurité/Sicherheitsvorkehrungen/Instrucciones de seguridad WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture. To reduce the hazard of electrical shock, do not remove cover or back. No user serviceable parts inside. Please refer all servicing to qualified personnel.
- Table of Contents Introduction 2 S•2-way Features 3 Controls and Functions Front Panel Layout Rear Panel Layout 4 5 Operating the S•2-Way Setting Up the S•2-way Setting up the S•2-way for Stereo 2-way Operation S•2-way Controls S 2•Way System Set-Ups Mono 3-way Operation SETTING UP THE S 2-way USING A REAL TIME ANALYZER 6 7-8 9 10 11 - 12 S•2-way Connections 13 Block Diagram 14 Specifications 15 Notes 16 s Copyright 2003, Samson Technologies Corp.
Introduction Thank you for purchasing the Samson S 2-way electronic crossover. The Samson S 2-way is a one rack-space, dual channel electronic signal processor capable of managing frequency crossover for stereo 2-way and mono 3-way speaker systems. The S 2-way is an ideal crossover solution for small and large PA systems, live sound venues, commercial installations, recording studio monitors and DJ set-ups. The S 2-way is easy to configure for stereo or mono operation by using the front panel mode switch.
S 2-way Features The Samson S 2-way electronic crossover utilizes the latest technology in crossover filters and speaker management design. Here are some of its main features: • Full featured, Stereo 2-way, Mono 3-way electronic crossover. • Precision Linkwitz-Riley, 24 dB/Octave filters. • Each channel incorporates a High Pass Filter, Butterworth 25 Hz, 12 dB/Octave, to help you reduce stage rumble and the engery loss from sub-sonic frequencies.
DELAY (CH 1) – This control is used to adjust the delay line from 0 to 2ms, for time aligning the low frequency output. LOW GAIN (CH 1) - Adjusts the output level of the LOW frequency band for the left in stereo 2-way mode, or for the LOW band in mono 3-way mode. FREQUENCY (CH 1) - This control sets the crossover point dividing the frequency bands from low-to-high in stereo 2-way mode, or from low-to-mid when you are operating in mono 3way mode.
5 D C B A CHANNEL 2 INPUT - XLR balanced line INput. output. CHANNEL 2 LOW OUTPUT - XLR balanced line PUT - XLR balanced line output. CHANNEL 2 HIGH OUTPUT?MONO HIGH OUT- tor with external fuse. AC INLET - IEC standard ac power cable connec- REAR PANEL LAYOUT G F E anced line input. CHANNEL 1 INPUT/MONO INPUT - XLR bal- PUT - XLR balanced line output. CHANNEL 1 LOW OUTPUT/MONO LOW OUT- PUT - XLR balanced line output.
Operating the S 2-way SETTING UP THE S 2-way Whether you are an experienced audio engineer or just starting out, the following sections of this manual will help you get going with your S 2-way. Now that you have unpacked the unit and have become a bit familiar with the front panel controls, you can follow the next sections of this manual to begin to set-up and operate your new crossover. Further on in this manual, you will find detailed wiring diagrams of various speaker system set-ups.
Operating the S 2-way SETTING UP THE S 2-way FOR STEREO 2-way OPERATION The following operating example is for a Stereo 2-way system using a 15" low frequency driver and a 1" compression driver on both the left and right sides. CAUTION: Before you apply power to your speaker system amplifiers, be certain to set the frequency controls to the manufacturers recommended crossover points for the drivers or enclosures you are using.
Operating the S 2-way Once you have your system wired-up, follow the steps below: • Set the mode switch to the ST 2 W position. Notice the silkscreen BAND INDICATORs showing the frequencies that are now under control by the associated GAIN or FREQUENCY knobs. • Use the FREQUENCY control on Channel 1 and 2 to set the desired crossover point. • Lower your power amplifier outputs to all the way off. Turn on all your power amplifiers.
Operating the S 2-way S 2-way Controls The Samson S 2-way features a variety of control functions that offer the sound engineer advanced control over a speaker system. The next section is a description of the control functions and how they are used to improve the overall sound of a sound reinforcement system. HIGH PASS FILTER The S 2-way incorporates a HPF (High Pass Filter) which when engaged, activates a low frequency roll off at 25 Hz.
S 2-way System Set-Ups MONO THREE WAY OPERATION If you’re operating your PA system Mono 3-way, wire your system as shown in the system diagram below. Once you have your system wired-up, follow the steps below: • Locate the MODE switch in the master section and set it to the MONO 3 W position. • Notice the outlined boxes showing the frequencies that are now under control by the associated GAIN or FREQUENCY knobs.
SETTING UP THE S 2-way USING A REAL TIME ANALYZER SETTING UP THE S•2-way USING A REAL TIME ANALYZER A REAL TIME ANALYZER (RTA) is an especially useful tool for setting up your crossover, as it will enable you to set parameters like DELAY and LEVEL more accurately. Some Audio Engineers can use their ears to tune a loudspeaker system. Some will even use the crossover to create the over-all system curve by using the crossover like an equalizer.
SETTING UP THE S 2-way USING A REAL TIME ANALYZER • Turn off the High Frequency MUTE switch and turn up the High Frequency Level control until the RTA reads 0dB at the crossover frequency. • Now, press the LOW MUTE switch again turning on the low frequency output. Notice the reading on the RTA at the crossover frequency. If the reading is 0dB, there is no need to adjust the delay time and you can assume that the speakers are in phase.
Connections Unbalanced 1/4” Connector Balanced TRS 1/4” Connector XLR Balanced Wiring Guide 13
Block Diagram 14
Specifications Inputs Female Balanced XLR Impedance Balanced Max. Input level >15k Ohms +26dBu balanced Outputs Male Balanced XLR Impedance Balanced Max. Output Level 100 Ohms +26 dBu Global Specifications Frequency Response <10 Hz to >90 kHz, +0/-3 dB Signal to Noise (Ref +4 dBu), 22 Hz to 22 kHz, un-weighted 90dB high out, mid 90dB, low 94dB, all outs >100dB muted CMRR Min.
Notes 16
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.
