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Hafler IRIS - page 1
Hafler Iris Preamplifier ...
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Hafler IRIS - page 2
It is a good habit to turn down BOTH remote and main panel volume controls upon system shut-down. This will avoid possible sudden and unexpected changes in volume when system is re-activated. TABLE OF CONTENTS Introduction ................................................................. Page 1 installation ......................................... ...
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Hafler IRIS - page 3
INSTALLATION The gloss black insert on the face-plate of your new Hafler Equipment has been packaged with a removable protective coating. Please peel off this protective coating following in- stallation. When cleaning the face-plate, we advise a soft cotton cloth with a non-abrasive cleaner that is safe for lexan and painted surfaces. DO NOT use pa ...
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Hafler IRIS - page 4
Power IRIS is internally connectable for virtually all AC line-power Connections systems. Units not marked otherwise, on the rear panel, are connected for 120 Vofts, 50-60 Hz. Two SWITCHED outlets and one UNSWITCHED outlet (U.S. 120 Volt standards) are provided on the rear panel. The UNSWITCHED outlet is provided for powering certain me- chanical e ...
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Hafler IRIS - page 5
High Level IRIS has seven pairs of main HIGH LEVEL inputs, selected by Inputs the seven (oval) KEYS to the right of the phono KEY. All of these (Oval Key inputs proceed at unity gain to the attenuator/line-amplifier selected) system, which has a maximum gain of 20dB. Main Outputs The MAIN output jacks are used to feed the power amplifier. and Their ...
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Hafler IRIS - page 6
OPERATION Turn-On/Off logic Muting System Volume/ Balance System CAUTION: The EPL switch and the tape MONITOR switches, explained later, are often the cause of an apparently “dead” system, when they have accidentally been left engaged. Always check them first if a system is found “dead” on turn-on. For now, make sure that all six of the gro ...
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Hafler IRIS - page 7
The EPL and Tape Loop Systems The actual audio attenuation elements are passive optically- controlled resistors, arranged in a special CYBER-OPTIC control circuit (patent applications in progress) which allows a combination of very low distortion and stereo tracking accuracy (typically 0.1dB) not previously possible in a passive, continu- ous contr ...
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Hafler IRIS - page 8
IRIS FUNCTIONAL BLOCK DIAGRAM (ONE CHANNEL SHOWN) MON I TOR SWITCH MON I TOR SWITCH 1 2 0 e 0 A 7 bREC 2 CUT EPL IN MAIN OUT 7 ...
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Hafler IRIS - page 9
Recording Any recording requires that you activate either the RECORD 1 System jacks, the RECORD 2 jacks (or both) using the RECORD 1 or RECORD 2 switches on the panel. As seen in the signal flow diagram, this makes any input selectable by the KEYS available to these outputs. EXAMPLE: KEY-selecting TUNERwith RECORD 1 depressed will send both TUNER c ...
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Hafler IRIS - page 10
Tape The tape MONITOR switches at first appear to allow only a Monitoring redundant selection of what you hear from your deck(s) when Switches you use the TAPE KEY(s). The important difference is that MONITOR switches actually BREAK the audio path inside the preamplifier, allowing you to listen to the deck’s OUTPUT while its INPUT is being fed fr ...
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Hafler IRIS - page 11
USING THE IRIS REMOTE SYSTEM Infrared Remote Integrated System INTRODUCTION Key Command Transmissions volume/ Balance (V/B) Command Transmissions The IRIS preamplifier achieves its infrared (IR) remote capabil- ity by the addition of the IRIS remote RECEIVER board, which plugs into a keyed male connector at the top of the preamplifier’s Command/M ...
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Hafler IRIS - page 12
Automatic Transfer of V/B Control Note: The touching of BOTH knobs simultaneously will some- times inhibit operation of the touch-sensing system. The knob- touch system overrides any KEY-type command-so that KEY commands will not transmit, if you are accidentally touching either knob. The transmission of analog control positions to the preamplifier ...
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Hafler IRIS - page 13
Remote V/B Resolution Record Security and Umbilical systems Note: Which V/B knob-set is in command is unaffected by ANY KEYS-remote or preamplifier. It depends ONLY in where the LAST V/B command came from (including the effects of pream- plifier power-up discussed earlier). CAUTION: Since the IRIS remote is fun for many adults, it is likely that sm ...
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Hafler IRIS - page 14
sx (Serial eXternal KEY The rear of the IRIS receiver card has a recessed, keyed male connector which carries needed digital signals for allowing the IRIS system to be connected to coming Hafler IRIS-compatible accessories, in a manner similar to which dispersed computer terminals can share the same data lines without confusion. The TUNER legend co ...
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Hafler IRIS - page 15
and pull the cover off. 2) The battery polarities are clearly marked in the plastic holder, visible when the batteries are removed. 1) Remove the 4 screws on the bottom cover of the transmitter, Carefully observing these polarity markings, replace all 4 batteries. 3) Check IMMEDIATELY for normal transmitter operation by observing the RED transmitte ...
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Hafler IRIS - page 16
Even if you are experimenting, you must replace the cover before re-plugging in the unit to AC-not only for safety reasons, but to shield hum and interference which can totally invalidate any attempts at sonic evaluation. CAUTION: When low value resistors are installed and automatically se- lected by the high-gain MC position (button IN) of the PHO ...
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Hafler IRIS - page 17
IRIS SPECIFICATIONS Phono Section: Frequency Response: Maximum Output Voltage: Totul Harmonic Distortion & Noise Sensitivity: Signal to Noise Ratio: Maximum Input Signal: Input Impedance: Gain: LINE SECTION Frequency Response: Bandwidth: Maximum Output Voltage: (Measurements at REC OUT) 20Hz-20kHz, ±0.1 dB 5 Volts RMS, 20Hz-20kHz 20Hz-20kHz Mo ...
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Hafler IRIS - page 18
Total Harmonic .005%, 20Hz-20kHz @ 2 volts RMS Distortion & Noise: Sensitivity: (For 0.5 V RMS Output): 75 mV RMS Signal to Noise -97dB (A-weighted, relative to 2.0 V RMS) Ratio: Input Impedance: 15-28k Ohms Gain: I +20dB Output Line Out: 316 ohms Impedance: Record Out: 2150 ohms GENERAL Inputs Phono (Mv/MM), CD, Tuner, Video, Aux 1, Aux 2, Tap ...
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Hafler IRIS - page 19
FACTORY SERVICE AND LIMITED WARRANTY If you encounter anydifficultyor have anyquestionsconcerning your IRIS preamplifier, please call our Customer Service De- partment weekdays, 8 am to 3:30 pm Mountain Standard time, at 602-967-3565. Before returning any unit to the factory for service, please call us. All units being returned (regardless of warra ...
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