Niles SI-1260 Installation & Operation Manual Download Page 21 | Manualshive

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Summary of Contents for SI-1260

Page 1: ...INSTALLATION OPERATION GUIDE Systems Integration Amplifier B lEN 0 I N G H I G H F IDE liT Y AND ARC HIT E C T U R E ...

Page 2: ...factures the industry s most complete line of custom installation compo nents and accessories for audio video systems For a free full line catalog write Niles Catalog Request P O Box 160818 Miami Florida 33116 0818 or visit www nilesaudio com TABLE OF CONTENTS INTRODUCTION 2 FEATURES AND BENEFITS 3 SYSTEM DESIGN BASICS 5 SYSTEM DESIGN CONSIDERATIONS 6 APPLICATIONS 8 CONFIGURING YOUR SYSTEM 13 INST...

Page 3: ... mulliple inputs enable it 10 be used in several different applications simultaneously if desired j e mono background music in some rooms and stereo in others As you read this manual and become morc familiar with the 51 1260 s capabilities you will understand why our multi channel amplifier design has won many presti gious induslry awards The first multi4 channel amplifier introduced by iles the 5...

Page 4: ...er based operation circuitry that monitors all facets of the amplifier s operation and protection modes over under line voltage main power fuse status channel pair on off status thermal protection short circuit low impedance protection and DC output protection Additionally easy to see front panel LED indicators display the operation or protection mode for each channel pair CH 1 2 CH3 4 CH5 6 CH7 8...

Page 5: ... for up to twelve different speaker locations for optimum audio performance providing uniform sound in every room Turn On Modes The 51 1260 features three selectable turn on modes 7 manual turn on via the front panel switch 2 microcontroller enhanced audio sensing which activates only the appropriate amplifier channels while leaving unused channel pairs off to eliminate cross talk and 3 a 3 30 vol...

Page 6: ... individual volume controls can be used Niles makes volume controls in vari ous styles and colors When designing your system take into account who will use the system and when they will use it Consult your local Niles dealer for more information r r I I I I I I I FAMILY ROOM I I LISTENING ZONE 2 II L _ I I I I I I I LIVING ROOM I I I LISTENING ZONE 1 I L _ A MultiZone system as shown in Figure 3 o...

Page 7: ...d home theater loudspeakers with all mod els rated from 6 8 ohms Cable and Wire Because the 51 1260 has many connections on the rear panel see Figure 13 it is important that you correctly label all of the input cables and speaker wires Label the cables and wires with their destination or source rather than the 51 1260 terminal to which they are connected This will make it easier to reconfigure you...

Page 8: ...re bridging is an excellent way to improve the sound There are also applications where bridging would seem to be appropriate but is not recommended Bridging channels increases the power to 120 watts per channel with an 8 ohm impedance These are some of the most common DOs and DON Ts 1 Outdoors DO Sound dissipates faster outside than it does in a room where the walls enclose the sound and reflect i...

Page 9: ...ol enabling you to compensate for architectural differences which may cause one speaker to seem louder than another In addition you can fine tune the system so that when all of the room volume controls are set to the loudest level the large rooms and the small rooms play at the same volume DSS Niles VCS 2D Volume Control VCR Preamplifier or AM FM receiver SI 1260 0 YYYT Tt CD Room 1 Room 2 Room 3 ...

Page 10: ...m is playing another source This is possible only if the CD player you are using has dual audio outputs one with remote controllable volume and the other a fixed volume As shown in Figure 5 you connect the CD player s variable output to the 51 1260 s dedicated channel inputs for the particular room where you will listen only to CDs The fixed output is connected to the main preamp or receiver so yo...

Page 11: ...s amplification for multiple rooms within a second listening zone as shown in Figure 6 DVD CD CHANGER VCR DSS Second Zone Output I I ZONE 1 I Home Theater I I _ r n e k __ S n e p_e k r R e e e s_ BusMatrix Input 1 r _ 1 Niles VCS 2D HP Volume Control HP High Power SI 1260 0 Niles VCS 2D Volume Control I I I I I I I I I I Living Room Kitchen Exercise Room Hallway Patio I I Unbridged Channels1 8 Br...

Page 12: ...imate MultiZone system you would connect six stereo preamplifiers or a single component multi zone multi source preamplifier to one 51 1260 creating six completely independent listening zones MultiZone systems enable listeners located in six separate zones to simultaneously listen to different source components as shown in Figure 7 Figure 7 Creating More Listening Zones III ...

Page 13: ...ies the connections required for this sys tem design As shown in Figure 8 a Niles A4 6Ci MultiZone Controller has its first and second zone outputs connected to the 51 1260 s Dual BusMatrix 1 and 2 inputs respectively Bus Input 1 is then routed to amplifier channels one through six via dip switch settings Bus Input 2 is routed to amplifier channels seven through twelve in the same manner 5ix rooms...

Page 14: ...t 1 Second Zone Left Output Right Bus Input 1 Second Zone Right Output Left Bus Input 2 N S Right Bus Input 2 N S Cascade Output Bus 1 Right N S Cascade Output Bus 1 Left N S Cascade Output Bus 2 Right N S Cascade Output Bus 2 Left N S CH BRIDGED DIP INPUT SOURCE SPEAKER 1 D L1 Bus 1 Left Living Room 2 R1 Bus 1 Right Living Room 3 D L1 Bus 1 Left Kitchen 4 R1 Bus 1 Right Kitchen 5 D L 1 Bus 1 Left...

Page 15: ...n it is out the amp is OFF Audio Sense The amplifier is OFF when there is no audio signal present at any of the 16 inputs but the sensing circuitry is active The turn on sensing circuitry looks for a tiny amount of audio signal present at any of the audio inputs If it detects a signal the adjacent pair of amplifier channels i e channel 7 2 3 4 5 6 etc assigned to receive the input signals will swi...

Page 16: ...ng the auto turn on circuitry Removable Two prong IEC compatible AC power cord Gold plated RCA jacks for the dedicated inputs DB 25 input connector for simplified dedicated audio and voltage trigger connection using Niles MultiZone Products L Serial Number Bridging switch for each channel pair Level controls for each channel BusMatrix controls for each channel Turn On Mode Switch tt r Cascade outp...

Page 17: ...ntinuous air flow into and out of the cabinet see Figure 12 CAUTION When using low impedance speaker loads less than 4 ohms Normal Mode less than 8 ohms Bridged Mode refer to Figure 12 for proper placement A A A The 51 1260 is equipped with a massive toroidal power transformer This transformer generates a powerful magnetic field that could induce a hum in a turntable particu larlya turntable equip...

Page 18: ...on is accomplished with standard RCA interconnect cables The outputs are not buffered to daisy chain more than five Niles amplifiers you will need a Niles AVDA 3 buffered distribution amplifier A single AVDA 3 enables you to daisy chain five amplifiers from each of three outputs This allows 15 51 1260 power amplifiers to be fed from the same master preamplifier If your pre amplifier has a vacuum t...

Page 19: ...or black plastic knobs and insert the bare wire through the hole in the post Tighten the knob until the wire is securely clamped STEP 1 Label all wires 2 Connect one stripped wire end or banana plug to the black tenninal and one to the red tenninal If all wires connecting to the 51 1260 are labeled with their destination rather than their specific connection to the 51 1260 it will be easier to rec...

Page 20: ...L is for the Left Bus Input 1t2 2R is for the Right Bus Input 1t2 2L 2R is for a summed mono signal of the Left and Right Bus Input 1t2 The seventh switch assigns the dedicated input to its respective channel Again only one of the seven DIP switches should be configured to the liON position switched to the right OFF Position I B U s L ON Position lL lR 1L 1R 2L 2R 2L 2R 1 Figure 15 BusMatrix DIP S...

Page 21: ...dged Channel 2 and 3 are not a pair and cannot be bridged A CAUTION DO NOT CONNECT A Each bridged channel is designed for a 4 SPEAKER LOAD OF LESS THAN ohm minimum load Connecting multiple 4 OHMS TO A BRIDGED CHAN speakers to a single channel creating a NEL nominal impedance 0 less th m 4 ohms may cause the 51 1260 to go into protection mode or be damaged 2 Connect the speaker wires to the Connect...

Page 22: ... panel of the 51 1260 provides a 12V DC trigger signal It is suitable for triggering Niles automated switchers some motorized screens and electric curtain controls and other devices that require a constant 12V DC control voltage for activation This voltage is provided only when any of the amplifier channels are active or ON When all amplifier channels are OFF the 12V signal is OFF RN oN Figure 19 ...

Page 23: ...e ON position Power LED Indicator The 51 1260 features a bi colored POWER LED indicating the power status of the amplifier POWER LED STATUS OFF Amplifier is not plugged in to a live AC outlet Solid Yellow The amplifier is plugged into a live AC outlet and the main power switch is OFF out position Solid Red The amplifier is plugged into a live AC outlet and the main power switch is ON in position F...

Page 24: ...ee pairs of 8 ohm speakers attached to the same amplifier channel present the amplifier channel with a low impedance Both of these conditions will cause the LED indi cator to blink red very quickly Eliminating the short circuit or con necting a proper speaker impedance load will enable the channel pair to resume normal operation Slow Red Blinking Indicates the channel pair is overheating due to in...

Page 25: ... volume position If there are any other amplifiers in the system adjust their level controls to the minimum All of the amplifiers in your system must have level controls 2 Adjust all individual in wall volume controls to the loudest setting fully clockwise 3 Playa loud radio station 4 Increase the preamplifier or receiver s volume up slowly If you hear any sound lower the preamplifier s volume aga...

Page 26: ...irs connected to those speakers These harsh sounds include power ful high frequency sound spikes that will quickly damage the tweeter of any loud speaker If you continue to operate the amplifier at clipping power levels the protection circuits will operate The protection circuits will reset when output signal condi tions have returned to normal Perpetually over driving your speakers and amplifier ...

Page 27: ...LED is to the negative terminal at the back of the amplifier quickly blinking red and or the speaker 2 Disconnect the speaker wire at both ends separate the 2 conductors at both ends and test with a meter for a short circuit If there is no short connect the two conductors at one end and test for continuity 3 Verify that the impedance load of the connected speakers is not less than 2 66 ohms with a...

Page 28: ...position s more channels at nonnal Check the worksheet and verify all settings volume 2 If the channel pair LED is Yellow then the channel is being overdriven volume set too high on the pream plifier The channel volume level should be re calibrated to avoid this condition refer to page 25 for information on Using Level Controls as Limiters No sound on any channels Amplifier has an internal defect ...

Page 29: ...Bus Input 2 Cascade Output Bus 1 Right 1 Cascade Output Bus 1 Left 1 _ Cascade Output Bus 2 Right cascade Output Bus 2 Left CH BRIDGED DIP INPUT SOURCE SPEAKER 1 0 2 3 0 4 5 0 6 1 0 8 9 0 10 11 0 12 MODE SETTINGS IN USE SPECIAL CONNECTIONS OR NOTES D D I D D Constant Audio Sense Voltage Trigger t C f Control Output ...

Page 30: ...watts per channel at 8 ohms Input Impedance 47K ohms Input Sensitivity 77Volts for 8 ohms at rated output Overall Voltage Gain 32 dB Frequency Response Bandwidth Limited from 5Hz to 50kHz Distortion Normal mode 0 06 THO 20Hz to 20kHz all channels driven 8 ohms 0 06 THO rated 20Hz to 20kHz all channels driven 4 ohms Bridged mode 0 06 THO 20Hz to 20kHz all channels driven 8 ohms Overall Dimensions 1...

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Page 32: ...he other A grounding type plug has two blades and a third grounding prong The wide blade is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plug convenience receptacles and the point where they exit from the apparatus 11 Only use attach...

Page 33: ...here Niles Audio Corporation Customer Service Department P O Box 160818 Miami Florida 33116 0818 WARRANTY AND REGISTRATION CARD CONGRATULATIONS ON YOUR PURCHASE OF A NILES PRODUCT PROPERLY INSTALLED AND OPERATED YOUR NEW NILES PRODUCT WILL GIVE YOU YEARS OF TROUBLE FREE USE _NILES www nilesaudio com ...

Page 34: ...RRANTIES INCLUDING WITHOUT LIMITATION EITHER EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCT REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE CONSUMER PURCHASER NILES SHALL NOT BE RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUEN TIAL DAMAGES EXCEPT TO THE EXTENT PROVIDED OR PROHIBITED BY APPLICABLE LAW ...

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