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Table of Contents
Related Manuals for Hafler 945 Series
Summary of Contents for Hafler 945 Series
- Page 1 Series 945 Preamp/Tuner...
- Page 2 EQUIPMENT TO RAIN OR MOISTURE. READ INSTRUCTIONS All the safety and operating instructions of your Hafler equipment should be read before power is applied to the equipment. RETAIN OWNERS MANUAL These safety and operating instructions should be retained for future reference.
- Page 3 18. OUTDOOR ANTENNA GROUNDING If an outside antenna is to be used with the Hafler Tuner, be sure that the antenna system is grounded so as to provide some protection against voltage surges and built up static charges. Section 810 of the National Electrical Code, ANSI/ NFPA No.
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Page 4: Table Of Contents
TABLE OF CONTENTS PERFORMANCE SPECIFICATIONS ... General Information ... INSTALLATION Rackmounting ... Ventilation/Placement ... Line Voltage ... OPERATION/CONNECTIONS Power Cord Connection ... Convenience Outlets ... Front Panel V i e w Diagram ... Rear Panel View Diagram ... Remote Control Diagram ... Functional Block Diagram ... -
Page 5: Performance Specifications
PERFORMANCE SPECIFICATIONS All specifications are for 20 Hz - 20 kHz unless specified otherwise. LINE AMPLIFIER FREQUENCY RESPONSE: +O.l dB (into 33,000 ohms) (Measured BANDWIDTH: 10 Hz - 150 kHz, -3 dB, into 1 Ok ohm load L i n e O u t ) MAXIMUM OUTPUT: 5 volts RMS TOTAL HARMONIC DISTORTION AND NOISE: 0.02% @ 2 volts RMS SEI\ISITIVITY (For 0.5 volts RMS Output): 45 mV RMS... -
Page 6: Installation
INSTALLATION RACKMOUNTING The 945 Preamp/Tuner is supplied in either a 17” Black Version, or a 19” Silver Version. The 19” model has rackmounting holes provided for installation in equipment racks. The holes are on standard EIA spacings, though the faceplate height is not standard EIA size. - Page 7 1 4 1 4 RP P 945 PREAMP/TUNER FRONT PANEL VIEW...
- Page 8 FRONT PANEL CALL-OUTS POWER SWITCH -lights amber when in READY mode. -lights green when in ON mode. INFRARED RECEIVER WINDOW MEMORY PRESETS (l-9) -press to store AM/FM stations l-9 into memory. (See #6) -press to recall AM/FM stations l-9 from memory. +lO PRESET SHIFT (11-19) -press simultaneously with PRESETS l-9 to store AM/FM stations 1 l-19 into memory.
- Page 9 -@@@@@@@@@@ ANTENNA *@@@@Q@@@@ BRACKET RIGHT O?JT I t ! 4 CHANNEL T A P E 2/EPL 945 PREAMP /TUNER REAR PANEL VIEW VIDEO RECORD A / V I N VIDEO IN M:%:R @@@@@ @@@@ A / V O U T...
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Page 10: Rear Panel View Diagram
CHANNEL R I G H T I ObT Ikl CHANNEL UNSWITCHED LINE CORD A / V O U T OUTLET CONNECTOR T A P E 2/EPL 3 0 0 O H M 945 PREAMPTTUNER REAR PANEL VIEW 240 VAC VERSION... - Page 11 PREAMP /TUNER REMOTE CONTROL 1. VOLUME -press left volume button for decreased volume. -press right volume button for increased volume. -pressing either volume button defeats 2. TUNE -press left button to change tuner down in frequency. -press right button to change tuner up in frequency. -operation depends on status of AUTO/MAN on front panel.
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Page 12: Functional Block Diagram
* / v s L--_-----___~f~~~~~~~lll L--_-----___~f~~~~~~~lll L - - - - - - - - - - - - r----------m-- VlMo m”-* 945 PREAMP/TUNER L--lr----J L--lr----J ---------, - - - - - - - ~, , 5isE C M O S... -
Page 13: Antenna Connections
“Additional Information”. INITIAL POWER- As soon as the 945 Preamp/Tuner is plugged into AC power, the Power Switch will glow amber, UP/MUTING indicating a low power stand-by mode. When the unit is turned ON via the front panel Power Switch or... -
Page 14: Tone Controls And Tone In/Out
TAPE INPUTS The 945 incorporates two Tape Loops for use with audio tape decks or other input/output signal and TAPE processors. Due to the great flexibility of connection and control, the Tape Loops are probably the most complicated portion of the 945 to understand and operate. Therefore, a thorough reading of this section O U T P U T S is strongly recommended. -
Page 15: Mute Control
1 AM/FM TUNER SECTION The Tuner Section of the 945 Preamp/Tuner has been configured to match the broadcast requirements of the intended country of destination. For North America and some other areas, channel spacing will be set to increment at 100 kHz intervals for FM, and 10 kHz intervals for AM. -
Page 16: Memory Preset Buttons '1', ' 1 1' And Next (Remote Control)
Mode is keyed to signal strength, so weak stations may be “missed” in the Auto Mode. Therefore, when searching for a weak station, use Manual Mode. The 945 has a total of 18 memory preset locations that may be used for storing and recalling either AM of FM stations. -
Page 17: Circuit Description
Tape Input jacks and the Input Selector System. LINE AMPLIFIER The 945 Line Amplifier is a Class-A JFET design employing a differential input stage, driving a complementary high gain output stage, symmetrically driven for balanced slew-rate and low harmonic distortion. -
Page 18: Headphone Amplifier
If all controls are in the intended position and the Ready light is green, check all system power connections, interconnecting and speaker cables, and fuses. The 945 does contain one internal power fuse, but this fuse should not generally blow unless a malfunction has occurred. This fuse should be replaced only by aqualified technician, and only with the exact type and rating of fuse originally supplied. -
Page 19: Fm Antenna
WARNING: The use of ground adaptors (with the ground tab or wire of the adaptor disconnected) will eliminate the safety feature of the grounded power cord. This safety feature is intended to reduce the risk of electric shock-should an internal fault in the equipment result in an electrically “live”... -
Page 20: Am Antenna
SERVICE POLICY AND LIMITED WARRANTY If you encounter any difficulty or have any question concerning your 945 Preamp/Tuner, please call our Customer Service Department weekdays, 8 a.m. to 3:30 p.m., Mountain Standard Time, at 602-967- 3565.
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