Samson POWER AMPLIFERS SZ1120 Owner'S Manual Download Page 7

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SZ Series Layout - Front Panel

1: Handle

 - For easy transport while carrying, or while rack mounting, the SZ amplifier features two heavy 

duty, die cast handles located conveniently on the left and right side of the front panel. 

2: Fan Vent

 - The SZ series amplifers stay cool thanks to the forced-air cooling vents. Cool air is drawn 

through the front panel fan, reducing the temperature of the internal components while forcing the heat 

out the rear vents.  

3: Protection LED 

- This goes on for approximately five seconds whenever the SZ Series is powered on 

and then turns off.  The Protection LED will also light when overheating or other severe problems occur 

(see page 9 in this manual for more information).  It is normal for the Protection LED to fade slowly when 

the amp is powered off.  When lit, no signal is provided to any connected speakers, thus muting them and 

preventing any “thump” from occurring.  For a complete description of the conditions under which this light 

turns on, see the section entitled “The SZ Series Protection Circuitry” on page 9 of this manual.

4: CLIP LED

 - The CLIP segment lights whenever the amplifier is outputting signal at full strength. For 

the best signal-to-noise ratio, the CLIP segment should light occasionally during peak levels; if it lights 

frequently, you may be overloading the amplifier and a distorted (“clipped”) signal is probably being output. 

5: Power switch

 -  Use this to power the SZ Series on or off. The internal LED lights whenever the SZ Series is 

powered on.

6: -20 dB LED

 - The -20dB LED lights whenever the output signal is 20dB below full power. 

7: Signal LED

 - The SIGNAL LED lights whenever output signal is present. 

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POWER

Summary of Contents for POWER AMPLIFERS SZ1120

Page 1: ...POWER POWER POWER SZ1120 SZ1240 SZ1360 POWER AMPLIFERS SZ SERIES...

Page 2: ...NG TYPE PLUG POLARIZED PLUG HAS TWO BLADES WITH ONE WIDER THAN THE OTHER GROUNDING TYPE PLUG HAS TWO BLADES AND A THIRD GROUNDING PRONG 4HE WIDE BLADE OR THE THIRD PRONG ARE PROVIDED FOR YOUR SAFETY F...

Page 3: ...or objects have fallen into the unit the unit has been exposed to rain or moisture does not operate normally or has been dropped PRECAUCION Para reducir el riesgo de incendios o descargas no permita q...

Page 4: ...h com Table of Contents Introduction 1 SZ Series Features 2 SZ Series Layout Front Panel 3 SZ Series Layout Rear Panel 4 Designing an Installation Plan 5 Setting Up and Using Your SZ Series 8 The SZ S...

Page 5: ...teel chassis 19 inch rack mount design and convenient carry handles facilitating easy installation in any rack Optimized for commercial installations including schools houses of worship office buildin...

Page 6: ...d frequency response of 70Hz to 18kHz guarantee ultra clean sound quality LED signal indicators continuously display power output levels and allow you to correct for overloading clipping conditions Fo...

Page 7: ...ED to fade slowly when the amp is powered off When lit no signal is provided to any connected speakers thus muting them and preventing any thump from occurring For a complete description of the condit...

Page 8: ...iring and interconnection instructions 5 LEVEL ADJUST This control knob provides input level adjustment from 12dB to 0dB 6 HPF HIGH PASS FILTER Selectable High Pass or low cut filter at 400Hz used whe...

Page 9: ...owered You can connect line level signals on all four input channels so signals from TAPE CD DVD or Karaoke players Audio Video TV monitors Radio Tuners DJ mixers or any other line level device can be...

Page 10: ...no liability for any installation Designing an Installation Plan Now take some time to consider where you need to have sound in your particular installation After you have decided where you need to cr...

Page 11: ...so adjust some speakers to different output levels see diagram below The SZ Series amplifiers have built in transformers that step up the output voltage and reduce the current allowing you to connect...

Page 12: ...placed it can be used free standing or mounted in a standard 19 rack requiring only two rack spaces When installed make sure that both the front and rear panels are unobstructed and that there is good...

Page 13: ...ent conditions This occurs whenever the signal being output from the SZ Series rises to a level above 20 THD Total Harmonic Distortion Shorted speaker cables This will occur if due to faulty wiring th...

Page 14: ...4 ohm 8 ohm and 70 Volt operation SZ Series Connections 8 Ohm Operation One 8 Ohm speaker per amplifer 8 Ohm 8 Ohm 4 Ohm 4 Ohm 4 Ohm Operation Two 8 Ohm speakers per amplifer 70 Volt Operation Four sp...

Page 15: ...and music The first two SZ amps are connected to four wall mounted speakers in each of the Dining Rooms with their transformers set to a 25 watt tap The third SZ amp powers two speakers in the outside...

Page 16: ...tion Signal Ground 1 3 2 2 3 1 Hot Cold Female XLR Male XLR Hot 2 Cold 3 Common 1 Common Hot Cold Hot 2 Cold 3 Common 1 Common Solder Points End View End View Solder Points 1 2 3 2 1 3 SZ Series Input...

Page 17: ...LECTRICAL SHOCK DO NOT HOLD OR TOUCH THE COMMON AND 70 OR 100 VOLT WIRE CONNECTION WHILE OPERATING THE AMPLIFIER 25 Volt Wiring Guide Follow the guidelines below to select the appropriate size wire ba...

Page 18: ...T H D at 1 2 rated output 1kHz Less than 1 0 Cooling Variable speed fan Operating Temperature Humidity 0 40 C at 95 non condensing Power Consumptions at full power SZ1120 185W SZ1240 361W SZ1360 525W...

Page 19: ...15 Block Diagram...

Page 20: ...Samson Technologies Corp 45 Gilpin Avenue Hauppauge New York 11788 8816 Phone 1 800 3 SAMSON 1 800 372 6766 Fax 631 784 2201 www samsontech com...

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