Hafler GX2300 Owner's Manual
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Hafler GX2300 Owner's Manual

Hafler GX2300 Owner's Manual

2-channel audio power amplifier
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Summary of Contents for Hafler GX2300

  • Page 3: Table Of Contents

    DECLARATION OF CONFORMITY ..................... 2 SAFETY INFORMATION .

  • Page 4: Declaration Of Conformity

    Manufacturer’s Address: 546 South Rockford Drive, Tempe, Arizona 85281 Importer’s Name: Importer’s Address: Type of Equipment: 2-channel Audio Power Amplifier Model No.: GX2300 GX2300CE Serial Number: Year of Manufacturing: 2000 I, the undersigned, hereby declare that the equipment specified above conforms...

  • Page 5: Safety Information

    TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. 1. READ INSTRUCTIONS All the safety and operating instructions of your Hafler equip- ment should be read before power is applied to the equipment. 2. RETAIN OWNER'S MANUAL These safety and operating instructions should be retained for future reference.
  • Page 6 1. LEA LAS INSTRUCCIONES Todas las instrucciones de seguidad y operación de su equipo Hafler, deben ser leídas antes de que el equipo sea conectado dléctricamente. 2. CONSERVE EL MANUAL DEL PROPIETARIO Estas instrucciones de seguridad y operación, deben ser con-...
  • Page 7 Achten Sie darauf, dab weder Fremdkörper, noch Flüssigkeiten in das Gerät eindringen. 14. ERFORDERLICHER REPARATURSERVICE Hafler Equipment sollte nur von qualifizierten Service- Technikern instand gesetzt werden, wenn: A. Das Stromversorgungskabel beschädigt wurde B. Eine Flüssigkeit in das Gerät eingedrimgem ist C.
  • Page 8 à éviter toute pénetration dans l'enceinte du matériel. 14. DÉGÂT NÉCESSITANT UNE RÉVISION Le matériel Hafler devrait être révisé par des personnes qual- ifées de service après-vente, lorsque: A. Les fiches ou la prise de courant ont été endommagé, ou: B.
  • Page 9 Si deve prestar attenzione che oggetti e liquidi, come fluidi detergenti e bibite, non vengano versati all'interno dell'apparato. 14. RIPARAZIONI Gli apparati Hafler devono essere riparati da personale qualifi- cato quando: A. Il cavo di alimentazione o la spina sono danneggiati B.

  • Page 10: Specifications

    "U" version (115VAC nominal) "CE" version (230VAC nominal) MAINS POWER VOLTAGE: "U" version "CE" version *both channels driven at rated power GX2300 300W x 2 CH 300W x 2 CH 300W x 2 CH 600W x 1 CH 600W x 1 CH...

  • Page 11: Introduction

    WHY A NEW AMPLIFIER TOPOLOGY? Hafler TRANS•nova amplifiers, the recording studio reference, have a floating +/- power supply for each channel and a Nodal drive system covered by U.S. Patents 4,467,288 and 5,567,000. Our challenge was to convert this topology into a high efficiency design with minimal increase in complexity-yielding an amplifier of outstanding audio qualities, high effi- ciency and unprecedented value.

  • Page 12: What Else Distinguishes These Amplifiers

    WHAT ELSE DISTINGUISHES THESE AMPLIFIERS? Constant power into varying impedance. It takes twice as much current to develop a given wattage into 2Ω as it does into 8Ω—but only half the voltage. Many amplifiers quote a high output current at 2Ω but have an unpublished operating time measured in a handful of seconds—before thermal shutdown (hopefully) precludes thermal meltdown.

  • Page 13: Design Features

    Design Features 4Ω 100v 8Ω 2Ω CH A Load Power 2300 4Ω 100v 8Ω 2Ω CH B – 180˚ – Delay Crossover – – 0˚ must – Full Phase choose CD EQ only 0”- 6”- +10 dB Audio GND 12”- Freq 500Hz –...

  • Page 14: Installation

    Installation The GX2300/2600 is a standard 2U (2 rack height) 19" rack-mount unit, with both front and rear rack mounting ears. In portable systems, the amplifier must be supported at both the front and rear. COOLING The GX2300/2600 uses forced-air cooling (fan cooling) to remove the heat produced during normal operation. Free air flow at the mounting location is a critical factor in accomplishing long-term reliable operation of the amplifier.

  • Page 15: Audio Ground Chassis/Float Switch

    • The chassis is permanently connected to the earth (safety) ground pin of the Mains power connector. • The Audio Ground of each GX2300/GX2600 is permanently connected to the black terminals of both output binding posts, to pin 1 of each XLR input, and to the sleeve of each •...

  • Page 16: Operation

    The amplifier will operate with either a balanced or unbalanced signal source. INPUT The input jacks used on the GX2300/2600 are dual function connectors which accept XLR plugs. The amplifier will operate with either a balanced or unbalanced signal, from earth ground or floated source equipment.

  • Page 17: Floated Source Equipment

    GROUNDED, UNBALANCED SOURCE FLOATED SOURCE EQUIPMENT Source units with a 2-pin mains power cord have no means to connect the audio output ground to earth ground, so usually the audio output ground is floated from earth ground. However, this does not insure that when installed in a system, the audio output ground will remain floated from earth ground.

  • Page 18: Delay

    DELAY (One of these switches must be selected. If all the switches are OFF, there will be no output signal.) The delay feature provides five sections of 2nd-order all-pass delay filters of 450µsec +/-10µsec each. Unlike the more commonly used 1st-order all-pass, the 2nd-order filters achieve a constant delay time over the usable frequency range of 1Hz to 1kHz.

  • Page 19: Level Controls

    LEVEL CONTROLS The gain for each channel can be controlled individually using the front panel level control. The controls have 32 detented positions that are calibrated in dB. The maximum gain position is marked as the "0 dB" position, and the lower gain posi- tions indicate the amount of attenuation relative to the maximum gain position in dB.

  • Page 20: Load Switch

    The Load Switch - located on the front panel - allows the amplifier power supply to be matched to the speaker load for more efficient, cooler running operation.This unique feature of the GX2300/2600 allows each channel to be configured for 2Ω, 4Ω, 8Ω, or 70V, 100V mono operation.

  • Page 21: Wiring Diagrams

    Wiring Diagrams STEREO MODE (GX2300/GX2600) 1. Connect signal from source to both CH A and CH B inputs. 2. Move Stereo/Biamp switch to Stereo input mode. 3. Move Stereo/Mono switch to Stereo mode. 4. Select desired speaker load (8Ω/4Ω/2Ω) for each channel –...

  • Page 22: Bridge Mono Mode

    BRIDGE MONO MODE (GX2300/GX2600) 4Ω 100v 8Ω CH A 2Ω Load Power 4Ω 100v 8Ω 2Ω CH B Crossover Full CD EQ +10 dB Freq 500Hz – 800Hz – CH A BIAMP STEREO Crossover Full CD EQ +10 dB Freq 500Hz –...

  • Page 23: 100V Mono Mode

    4. Select 8Ω speaker load for each channel. 5. Connect parallel array of 100V transformer-equipped speakers across the red terminals of the 5-way binding posts. (1200W – GX2600, 600W – GX2300) 6. CH B input sensitivity controls 100V mono output level. Amplifier will clip at 100Vrms level.

  • Page 24: Service Policy And Limited Warranty

    Please call 1-800-669-9899 for Rockford/Hafler support. (you may also fax 1-800-398-3985).You must obtain an RA # (return authorization number) to return any products to Hafler. You are responsible for shipment of product to Hafler.Always include Proof of Purchase. Mark RA#on outside of shipping carton.

  • Page 25: Pc Board Layouts

    PC BOARD LAYOUTS CODE R137 CR22 R127 CR59 FLOAT CHASS R347 R346 R344 R350 R345 R293 R295 C182 C183 R278 C143 JW6A2 R306 C151 C146 R254 R251 C155 R327 C154 R245 R326 R250 R191 R337 R237 R247 R233 R227 R359 R236 R360 R230...

  • Page 26: Emi Filter

    PC BOARD LAYOUTS EMI FILTER CROSSOVER CD EQ – 24 – HAFLER PC-2460-E KS4R BLACK BLACK...

  • Page 27: Time Delay/Phase Inverter

    PC BOARD LAYOUTS TIME DELAY/PHASE INVERTER – 25 –...

  • Page 28: Schematic Diagrams

    Schematic Diagrams BRIDGE RECTIFIER – 26 –...

  • Page 29: Emi Filter

    EMI FILTER – 27 –...

  • Page 30: Crossover Cd Eq

    Schematic Diagrams CROSSOVER CD EQ – 28 –...

  • Page 31: Time Delay/Phase Inverter

    TIME DELAY/PHASE INVERTER – 29 –...

  • Page 32: Amplifier

    AMPLIFIER – 30 –...
  • Page 33 C600_maualB.sch-1 – 31 –...

  • Page 34: Protection

    PROTECTION – 32 –...
  • Page 35 C600_maualB.sch-2 – 33 –...

  • Page 36: High Voltage Control

    HIGH VOLTAGE CONTROL – 34 –...
  • Page 37 GX 2300 – 35 –...

  • Page 38: Housekeeping Control

    HOUSEKEEPING CONTROL – 36 –...
  • Page 39 C600_maualB.sch-6 – 37 –...

  • Page 40: Input

    INPUT – 38 –...
  • Page 41 C600_maualB.sch-8 – 39 –...

  • Page 42: Power

    POWER – 40 –...
  • Page 43 C600_maualB.sch-5 – 41 –...
  • Page 44 A DIVISION OF ROCKFORD CORPORATION ® 546 SOUTH ROCKFORD DRIVE TEMPE, ARIZONA 85281 U.S.A. IN U.S.A. (480) 967-3565 / IN CANADA, (604) 942-1001 IN EUROPE, FAX 8503-9340-14 / IN JAPAN, FAX (81) 559-79-01265 MAN-2987-A 6/00 MJT...

This manual is also suitable for:

Gx2300ceGx2600ceGx2600

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