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Niles Audio

Corporation

www.nilesaudio.com

12331 S.W. 130 Street

Miami, Florida 33186

Tel: (305) 238-4373

Fax: (305) 238-0185

©2003 Niles Audio Corporation. Because Niles strives to continuously improve its
products, Niles reserves the right to change product specifications without notice.
Niles, the Niles logo and Blending High Fidelity and Architecture are registered
trademarks of Niles Audio Corporation. Systems Integration Amplifier and
BusMatrix are trademarks of Niles Audio Corporation Printed in the Malaysia 9/03
DS00354AMY

DS00354A

MY

/SI-2125 10/10/03 11:12 AM Page 20

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Содержание SI-2125

Страница 1: ...ECTRICAL SHOCK DO NOT REMOVE COVER NO USER SERVICE ABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL CAUTION The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exc...

Страница 2: ...specifically created Systems Integration Amplifiers to solve the problems of interfacing with different brands and models of equipment different acoustic environments in different rooms and different kinds of applications home theater stereo outdoor speakers and background music The SI 2125 brings extremely high current power to a custom installed A V system in a remarkably convenient way INTRODUC...

Страница 3: ...ent For Reactive Loads The high current design of the SI 2125 assures that even unusual and reactive loads are handled with aplomb A massive toroidal transformer with two separate windings for each of the power supplies supplies more than ample current to your system Freedom from Fan Noise The oversized heat sinks inside the SI 2125 allow the amplifier to stay cool even when operating into low imp...

Страница 4: ...sumes Status Display for Troubleshooting LED s on the front panel indicate Power Active Status and a Protection Warning With a glance at the front panel a troubleshooter is quickly provided with key information Control Output A 12 volt DC output is provided whenever the amplifier is on allowing you to operate voltage triggered devices like motorized screens and curtains Bridged Mode The SI 2125 s ...

Страница 5: ... board under the amplifier s feet Do not block the ventilation holes on the top and bottom of the SI 2125 CAUTION When using low impedance speaker loads less than 8 ohms Normal Mode refer to figure 2 for proper placement The SI 2125 is equipped with an internal transformer which generates a powerful magnetic field which could induce hum in a turntable particularly a turntable equipped with a movin...

Страница 6: ...rned on Once the audio signal stops the sensing circuit waits two minutes then turns the amplifier off 3 30 Volt AC DC Opto Isolated Voltage Trigger The master switch on the front panel must be in the On position The amplifier is off when there is no 3 30V AC or DC voltage detected at the trigger input Once the sensing circuitry detects a voltage the amplifier is turned on Once the voltage stops t...

Страница 7: ...Installation Considerations on page 5 Figure 2 Niles makes a number of different speaker selection and impedance matching systems Speaker selection systems allow each pair of speakers to be turned on and off from your equipment location or even via remote control That way you know that the speakers in the bedroom are off so you can avoid waking a sleeping spouse These speaker selectors provide an ...

Страница 8: ...e rather than which terminal of the SI 2125 they are connected to The SI 2125 connects to your sources via shielded line level audio cables with RCA phono plugs Use high quality cables with your Niles amplifier for the lowest possible noise and best overall performance Your Niles dealer can recommend the proper cable The SI 2125 connects to your speakers using 2 conductor speaker wire For most app...

Страница 9: ...amplifier including the Turn On circuitry The red Protect LED indicates the amp has shut down because there is a fault in the speaker the wiring or with the SI 2125 itself t w Main Inputs enable you to route a stereo line level source to the SI 2125 Cascade Outputs of the main input enable you to daisy chain multiple amplifiers 3 5mm Mini Plug socket for 12v DC Control output Turn On Mode switch 3...

Страница 10: ...nnections Bridge mode switch IEC receptacle for AC power cord FRONT AND REAR PANEL DETAILS 10 by p has shut aker the Level Adjustment screws enable you to preset the maximum system volume or match levels with another amplifier ble ...

Страница 11: ...er is active or on When the amplifier turns off the 12 volt signal is off Pg 11 Setting The Turn On Mode Switch 11 Control Output 12 Speaker Wire Connections Pg 13 Line Level Audio Inputs 13 Cascade Audio Outputs 14 AC Power plug STEP 1 Check the requirements of the device you want to control 2 Connect the 3 5mm Jack to the control output maintaining proper polarity tip DESCRIPTION The control out...

Страница 12: ...ost Dual banana plugs will fit the SI 2125 binding posts STEP 1 Label all wires 2 Connect one stripped wire end or banana plug to the black terminal and one to the red terminal CAUTION Avoid even a single strand of wire touching the chassis or another connector DESCRIPTION If you label the wires for their destination rather than which terminal of the SI 2125 they are connected to it will be easier...

Страница 13: ...single AVDA 3 will allow you to daisy chain 5 amplifiers from each of its 3 outputs allowing 15 SI 2125 power amplifiers to be fed from the same master preamplifier If your preamp has a vacuum tube output stage you must use a Niles AVDA 3 to drive more than a single SI 2125 STEP 1 Label all of the interconnecting cables for the sources they connect to 2 Connect the sources by inserting the RCA plu...

Страница 14: ... Typically the preamp receiver s switched outlet is not rated for a power amplifier Just like a computer or printer the SI 2125 has an AC cord which unplugs either at the amp or at the wall for your convenience If you use a grounded power strip surge suppressor or extension cord verify that proper ground is maintained The SI 2125 draws a maximum of approximately 700 watts from an AC wall outlet Us...

Страница 15: ...rating Protection LED The front panel protection LED indicates that the amplifier has been shut down because of either a fault in the wiring or the speaker or with the SI 2125 itself Level Adjustment Screws The front panel level adjustment screws allow you to adjust the level of the SI 2125 relative to other amplifiers in your system Use a 1 8 slotted screwdriver to adjust the screws If the SI 212...

Страница 16: ...loose strands of wire crossing from the positive to the negative terminals at the back of the amplifier and or the speaker Short circuit or a break in the speaker wire Dis connect 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 with a meter for continuity Speaker is no...

Страница 17: ...material an ungrounded phono system or a defective component AC power cord must be plugged into a working outlet Master power switch must be on The loudspeakers are wired out of phase Reverse the connections at the back of one speaker Make sure that the Bridge Mode Switch is in the stereo position if the amplifier is being used in a stereo configuration TROUBLESHOOTING GUIDE S De Li Co 12 20 30 In...

Страница 18: ...atts bridged channel RMS at 8 ohms Input Impedance 18K ohms Input Sensitivity 878V for 8Ω rated output Overall Voltage Gain 33 dB Frequency Response Bandwidth Limited from 10 Hz to 100 kHz Total Harmonic Distortion 8 Ohms 02 THD from 20 Hz to 20 kHz full rated power 4 Ohms 02 THD from 20 Hz to 20 kHz full rated power Overall Dimensions 17 wide 5 1 2 high including feet 13 1 8 deep Weight 26 lbs ...

Страница 19: ...s strives to continuously improve its products Niles reserves the right to change product specifications without notice Niles the Niles logo and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation Systems Integration Amplifier and BusMatrix are trademarks of Niles Audio Corporation Printed in the Malaysia 9 03 DS00354AMY ...

Страница 20: ...I N S T A L L A T I O N O P E R A T I O N G U I D E B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E e its ce red and 03 Systems Integration Amplifier SI 2125 ...

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