Samson SZ1240 manual

POWER POWER POWER SZ1120 SZ1240 SZ1360 POWER AMPLIFERS SZ SERIES[...]

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Safety Instructions/Consignes de sécurité/Sicherheitsv orkehrungen/Instrucciones de seguridad ACHTUNG: Um die Gefahr eines Brandes oder Stromschlags zu verringern, sollten Sie dieses Gerät weder Regen noch F euchtigkeit aussetzen.Um die Gefahr eines Stromschlags zu verringern, sollten Sie weder Deckel noch Rückwand des Geräts ent- fernen. Im I[...]

Copyright 2007 Printed December , 2007 v1.0 Samson T echnologies Corp . 45 Gilpin Av enue Hauppauge, New Y ork 11788-8816 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 631-784-2201 www.samsont ech.com T able of Con tents I n t r o d u c t i o n ........................................................................... 1 S Z S e r i e s F e a t u r [...]

1 Introduction Thank you f or purchasing the SZ series constant v oltage power amplifiers from Samson T echnologies! The Samson SZ Series amplifiers have been designed to pr ovide robust, clean output with lo w distor tion and wide dynamic range, along with the dependability demanded by the most pr ofessional design engineers and audio installers. [...]

2 SZ Series F eatur es POWER The Samson SZ Series power amplifiers have been developed using the latest technology in amplifier design. Here are some of their main features: • Each SZ Series amplifier delivers reliable, clean po wer operation at 70/100 v olts and 4 Ohms, with their rated po wer output of 120 watts f or the SZ1120, 240 watts for t[...]

3 SZ Series Lay out - F ront P anel 1: Handle - F or easy transport while car r ying, or while rack mounting , the SZ amplifier featur es two heavy duty , die cast handles located con veniently on the left and right side of the front panel . 2: F an V ent - The SZ series amplifers sta y cool thanks to the for ced-air cooling vents . Cool air is dra[...]

4 SZ Series Lay out - Rear P anel 1: A C INPUT - Connect the supplied heavy- gauge 3-pin “IEC ” power cable her e. 2: DC 24V INPUT – A two circuit Eur oblock socket is provided f or connecting 24 volt emergency back-up power . 3: C ONST ANT VOL T A GE (output connector) - Use this Eur oblock to connect the amplifier to one of the 25, 70 and 1[...]

5 Designing an Installation Plan If you are a prof essional installer , you ’ll probably want to skip over this section, however if y ou are setting up your system f or the first time, this section can help make your installation a little bit easier . Before y ou star t plugging, stripping and connecting wires, it a good idea t o have a clear ins[...]

6 Using A c tive Speak ers In a larger installation, you may use a c ombination of passive speakers connected to y our SZ Series amplifier along with some active, or self pow ered speakers in a differ ent zone. When using active speakers, you can connect the S zone ’ s outputs using the balanced line level signals . In this case, you will run lin[...]

7 Designing an Installation Plan Using A C onstant V oltage Speaker System - c ontinued The same principle is applied in constant v oltage audio systems where a transf ormer is connected to the amplifier ’ s output to step up the v oltage while lowering the output current, which allows you to use long runs of lower gauge wire t o connect to a ser[...]

8 4. If you are using outdoor horn speakers, swit ch on the High P ass Filter . 5. On the rear panel of the SZ Series, turn the input Adjust fully counter clockwise (to the “-12dB” setting). Then connect the supplied heavy-gauge 3-pin “IEC” cable to the rear panel IEC connector and to any gr ounded AC outlet. 6. Pr ess the front panel P owe[...]

9 The SZ Series P rotection Circuitr y As noted in the “Guided T our ” section of this manual, the SZ Series front-panel Pr otection LED indicates the activit y of the relay speaker connection circuitry . When the Pr otection LED is lit, this circuitr y is active, and all connected speakers are muted . The follo wing conditions will cause the P[...]

10 The following diagr ams illustrate various wiring set ups for 4 ohm, 8 ohm and 70 V olt operation. SZ Series Connections 8 Ohm Operation (One 8 Ohm speaker per amplif er) 8 Ohm 8 Ohm 4 Ohm 4 Ohm 4 Ohm Operation ( T wo 8 Ohm speakers per amplifer) 70 V olt Operation (F our speakers per amplifer with their line transf ormers set to 25 watt)[...]

11 SZ Series Sy stem Set Up The following is a typical constant v oltage system setup for a small restaurant using four SZ1120 pow er amplifiers along with an S zone feeding several audio z ones with paging and music. The first two SZ amps are connected to four w all-mounted speakers in each of the Dining Rooms with their transformers set to a 25 w[...]

12 SZ Series Input W iring G uide Tip (signal) Sleeve (ground) 2 3 1 Male XLR Hot (2) Cold (3) Common (1) End V iew Solder Points 1 2 3 Tip (signal) Sleeve (ground) Co ld ( Pin 3) (no co nne ctio n) Tip (signal) Sleeve (ground) 2 3 1 Male XLR Hot (2) Cold (3) Common (1) End V iew Solder Points 1 2 3 Tip (signal) Sleeve (ground) Co ld ( Pin 3) (no c[...]

13 SZ Series Output W iring Guide SZ Series Output Wiring Guide There ar e several way s to inter face the SZ Series amplifers, depending on y our exact system set-up . F ollow the cable diagrams below f or connecting to the output of your amplifier . 4 and 8 Ohm W iring Guide 70 V olt W iring Guide 100 V olt W iring Guide SHOCK HAZARD SYMBOL W ARN[...]

14 Specifications Specifications Rated Output (at T .H.D 1.0%, 1kHz) SZ1120 120W att SZ1240 240W att SZ1360 360W att Gain Control -12dB ~ 0dB Input Sensitivit y (at Balanced line) 1.0 ± 0.1Vrms / 10Kohm High-pass Filter(a t 400Hz) -3dB F requency Response +1.5 / -3 dB at 70Hz~18kHz S/N Ratio Better than 90dB T .H.D at 1/2 rated output, 1kHz Less t[...]

15 Block Diagram[...]

Samson T echnologies Corp . 45 Gilpin A venue Hauppauge, New Y ork 11788-8816 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 631-784-2201 ww w .samsontech.com[...]