Page 2 - TABLE OF CONTENTS
CONGRATULATIONS! Thank you for purchasing the award winning Niles SI-1230, one of the mostversatile and powerful multi-channel amplifiers ever offered. Like all Nilesproducts, the SI-1230 is built to the highest standards of quality and reliability.With proper installation and operation, you'll enjo...
Page 3 - INTRODUCTION; Systems Integration Amplifier
INTRODUCTION We call the SI-1230 a Systems Integration Amplifier because, for the first time, a poweramplifier has been specifically designed to solve the problems of interfacing with dif-ferent brands and models of equipment, different acoustic environments in differentrooms, and different kinds of...
Page 4 - FEATURES AND BENEFITS; PC board incorporates advanced construction; FEA
FEATURES AND BENEFITS Real World Power The SI-1230 is a 12-channel amplifier that delivers a solid 30 watts per channelRMS into 8 ohms and 37 watts per channel RMS into 4 ohms. The massive Multi-Tap Toroid power transformer features six independent secondary transformers foreach of the six amplifier...
Page 5 - Limited two year parts and labor Warranty.
Independent Level Controls Each channel has its own independent level control enabling you to adjust thevolume settings for twelve different speaker locations. Each speaker can beadjusted for its location and who uses it! Turn-On Modes The SI-1230 features three turn-on modes: 1. Manual turn-on via ...
Page 10 - AMPLIFIER
9 APPLICA TIONS AND SYSTEM DESIGN CONSIDERA TIONS Creating a Low-Cost Second Zone Using A Dedicated Source The biggest problem in a single zone system is that when the TV is in use in oneroom, you cannot listen to music in another room. For a listener who only listensto CD’s it is possible to create...
Page 11 - STEREO PREAMPS OR 1 MATRIX PREAMP
Adding Preamps to Create More Listening Zones In the ultimate multi-zone system you would connect six stereo preamplifiers (ora single component multi-zone or matrix preamp) to one SI-1230 and create sixcompletely independent stereo systems. A system like this allows six people tosimultaneously list...
Page 13 - CONFIGURING YOUR SYSTEM; Sample Configuration Worksheet
CONFIGURING YOUR SYSTEM 12 CONFIGURING YOUR SYSTEM Because the SI-1230 offers so many configuration possibilities it is important toplan carefully before you install it. Draw a block diagram of your system and usethe Configuration Worksheet on page 29 to record how you plan to connect yourSI-1230. H...
Page 14 - INSTALLATION CONSIDERATIONS; Placement; Figure 1
13 INST ALLA TION CONSIDERA TIONS INSTALLATION CONSIDERATIONS Placement Place the SI-1230 on a flat, level surface like a table or shelf. It should be placedupright so that its weight rests on the unit’s four feet. PLACING THE WEIGHT OFTHE AMPLIFIER ON THE REAR OR FRONT PANEL FOR EVEN AN INSTANT WIL...
Page 19 - TECH TIP
18 Cable and Wire Because the SI-1230 has so many connections on the back panel it is very impor-tant that you label all the input cables and speaker wires. If you label the cablesand wires for their destination or source, rather than which terminal of the SI-1230they are connected to, it will be ea...
Page 20 - INSTALLATION; Bridging Two Channels into One; INST; Bridged
INSTALLATION CAUTION! ALL CONNECTIONS AND REAR PANEL SWITCH SETTINGSSHOULD BE MADE WITH THE AMPLIFIER’S FRONT PANEL MASTER POWERSWITCH OFF. Bridging Two Channels into One The SI-1230's bridging switches allow you to create a more powerful amplifierchannel by combining or "bridging" two adjac...
Page 21 - Input Switch Setting; EVEN NUMBERED
Bridging Two Channels Into One (continued) BusMatrix TM Input Switch Setting Each channel has a dedicated BusMatrix DIPswitch that assigns that channel’s source. Toassign a signal from the Main Bus Input, selectone of the first three switches which will giveyou either Left (L), Right (R) or Mono (L+...
Page 23 - Speaker Wire Connections; All speaker wire connections must be made with the amplifier Off.; Connect one stripped wire end or
22 Speaker Wire Connections CAUTION! All speaker wire connections must be made with the amplifier Off. STEP 1. Label all wires. 2. Connect one stripped wire end or banana plug to the black terminaland one to the red terminal. CAUTION- Avoid even a single strandof wire touching the chassis or another...
Page 24 - THE AMPLIFIER MUST BE OFF WHENEVER YOU MAKE CHANGES; Cascade Audio Outputs; The
23 INST ALLA TION Line Level Audio Inputs CAUTION! THE AMPLIFIER MUST BE OFF WHENEVER YOU MAKE CHANGES TO THE INPUT CONNECTIONS. Cascade Audio Outputs The " Cascade Audio Outputs " enable you to connect another amplifier to your preamplifier output. The connectors are gold-plated RCA phono j...
Page 25 - AC Power Plug
AC Power Plug STEP Plug the attached 2 prong plug into acorrectly grounded 120V 60 Hz walloutlet. CAUTION! Do not plug the amplifier'scord into a preamplifier’s convenienceoutlets. DESCRIPTION If you use a grounded power strip, surgesuppressor or extension cord, verify thatproper ground is maintaine...
Page 26 - OPERATION; Power LED
25 OPERA TION OPERATION Power LED The power LED indicates that the AC cord is plugged into a working AC powerreceptacle and that the power switch is in the "On" position. Active LED The rear panel turn-on mode switch determines when and how the amplifier willturn on. The "Active" LED...
Page 28 - TROUBLESHOOTING GUIDE; SYMPTOM
27 TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE When there is a problem consult this guide first. If the problem persists, or youhave additional questions, call your local Niles dealer or call Niles TechnicalSupport at 1-800-289-4434. The most common problems relate to hook up. SYMPTOM No sound on on...
Page 29 - Have your configuration worksheet handy when you call.
Have your configuration worksheet handy when you call. TROUBLESHOOTING GUIDE (continued) SYMPTOM Hum from all of the speakers Amp will not turn on Sound is distorted on oneor all of the channels atnormal volumes Normal volume cannot bereached Bass sound is weak and thestereo image is "phasey"...
Page 30 - CONFIGURATION WORKSHEET
CONFIGURA TION WORKSHEET 29 BUS INS & OUTS CONNECTED TO Left Main Bus Right Main Bus Cascade Output CH # BRIDGED DIP INPUT SOURCE SPEAKER 1 2 3 4 5 6 7 8 9 10 11 12 MODE SETTINGS IN USE SPECIAL CONNECTIONS OR NOTES Constant Audio Sense Voltage Trigger Control Output CONFIGURATION WORKSHEET For e...
Page 31 - SPECIFICATIONS; Bandwidth Limited from 5 Hz to 50 kHz; SPECIFICA
SPECIFICATIONS Design Principle Linear voltage/current amplification. Continuous Power Output (FTC Rated) (unbridged, all channels driven) 30 watts per channel RMS at 8 ohms and 37 watts per channel RMS at 4 ohms. Bridged Power Output (Two channels bridged, all channels driven) 80 watts per channel ...
