Hartke AC75 Owner's Manual
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Hartke AC75 Owner's Manual

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Acoustic Instrument Amplifier

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Hans Henraat
February 19, 2025

how can i clean inside the

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1 comments:
Mr. Anderson
May 14, 2025

You should not clean the inside of a Hartke AC75 yourself. The manual states that there are no user-serviceable parts inside and advises against removing the cover or back. Cleaning should be done only with a damp cloth on the exterior. For internal issues or maintenance, contact qualified service personnel.

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Summary of Contents for Hartke AC75

  • Page 1 ����� ���� Acoustic Instrument Amplifier...
  • Page 2 Caution: To reduce the hazard of electrical shock, do not remove cover or back. No user serviceable parts inside. Please refer all servic- ing to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture. The lightning flash with an arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of un-insulated "dangerous voltage"...
  • Page 3 ATTENTION: Pour éviter tout risque d’électrocution ou d’incendie, ne pas exposer cet appareil à la pluie ou à l’humidité. Pour éviter tout risque d’électrocution, ne pas ôter le couvercle ou le dos du boîtier. Cet appareil ne contient aucune pièce remplaçable par l'utilisateur. Confiez toutes les réparations à un personnel qualifié. Le signe avec un éclair dans un triangle prévient l’utilisateur de la présence d’une tension dangereuse et non isolée dans l’appareil.
  • Page 4 cadere.

  • Page 5: Table Of Contents

    AC75 and AC150 Effects Presets ........16...

  • Page 6: Introduction

    In these pages, you’ll find a detailed description of the many features of the AC75 and AC150 acoustic amplifiers, as well as a guided tour through it's front and rear panels, step-by- step instructions for setting up and using the product, detailed discussions about equalization and compression, and full specifications.

  • Page 7: Hartke Ac75 And Ac150 Acoustic Amplifier Features

    4-inch ribbon on a 5 x 7 waveguide, while the AC150 has a 2 x 4-inch ribbon on a 7 x 7 wave- guide. • Both Acoustic Ribbon models offer ample power. The AC75, with 75 watts in a bi-amped con- figuration delivering 50 watts for the full range speakers and 25 watts for the ribbon tweeter.

  • Page 8: Guided Tour - Front Panel

    16. EXF SELECT - Used to select one of the available 100 digital effects presets. 17. EFX PRESET Display - Shows the current selected preset program number. 18. VOLUME - Control knob used to control the overall level of the AC75 or AC150 amplifier.

  • Page 9: Guided Tour - Rear Panel

    D. PRE/POST Switch – Used to select the direct output from either before or after the channel preamp, equalizer and effects. E. DIRECT OUT XLR - This connector carries the Balanced signal from the AC75's main output and can be used to connect to the main PA mixer.

  • Page 10: Setting Up And Using Your Acoustic Ribbon Amplifier

    Setting Up and Using Your Hartke AC75 and AC150 Acoustic Amplifier AC75 and AC150 Basic Operation Setting up your Hartke AC75 or AC150 Acoustic ampli- fier is a simple procedure which takes only a few min- utes: 1. Remove all packing materials (save them in case of need for future service) and decide where the ampli- fier is to be physically placed.
  • Page 11 Setting Up and Using Your Hartke AC75 and AC150 Acoustic Amplifier 8. Next, experiment with the AC75 or AC150's graphic equalizer. Begin by setting each of the seven sliders to their flat “0” center detented position. Then, move each filter slider in turn as you play your acoustic and listen to the effect on the tone each of the equalizer filters makes.
  • Page 12 Setting Up and Using Your Hartke AC75 and AC150 Acoustic Amplifier Using the Digital Effects You can add of splash a delay and chorus or gallons of lush reverb to either input channel using one of the Acoustic Ribbon’s 100 on-board, 24-bit digital effects.
  • Page 13 Hartke Acoustic Attack pedal. You can also use the MIC input to connect a standard low impedance vocal micro- phone.
  • Page 14 Setting Up and Using Your Hartke AC75 and AC150 Acoustic Amplifier Setting the Notch Filter The AC75 and AC150’s NOTCH FILTER is a power- ful tool to help you remove feedback. Feedback is that annoying howling sound that you get when...
  • Page 15 Setting Up and Using Your Hartke AC75 and AC150 Acoustic Amplifier Using the LINE/CD Input Your Acoustic Ribbon series amplifier features a LINE/CD input which you can use with a portable CD player, cassette, mini disk or MP3 player to jam with pre-recorded tracks or learn a riff from a favorite tune.

  • Page 16: Ac75 And Ac150 Set-Ups

    PA systems. Use these electronically balanced XLR jacks to route signal from the AC75 or AC150 to a recording console or as a tap to a main PA system via a mic input on the main mixer. The signal output from these jack is low impedance (100 ohm) with an output level of approximately -30 to -20 dB.
  • Page 17 AC75 and AC150 Set-ups Using the Effects loop The AC75 and AC150 Acoustic Ribbon amplifiers feature rear panel PREAMP OUT and AMP IN connectors that access the preamp section and power amp section sepa- rately. They can be individual, for example the PREAMP OUT can be used to send the signal to a recorder or AMP IN can be accessed for using the amp as a powered moni- tor.

  • Page 18: About Equalization

    The AC75 or AC150 provides you with one most effective tool for shaping the overall tone of your Acoustic sound; a Graphic Equalizer providing 12 dB of cut or boost in five narrow frequency bands.
  • Page 19 (you’d be amazed how easy it is to for- get these things!). • Finally, as you experiment with the EQ con- trols of the AC75 or AC150, don’t forget that your acoustic probably provides EQ control, so experiment by using both.

  • Page 20: Ac75 And Ac150 Effects Presets

    AC75 and AC150 Effects Presets Medium Bright Plate.che flanger-reverb.che Best Plate .che flanger-short reverb.che Medium Dark Spring.che lt flanger-med reverb.che Short Plate.che med flanger-med reverb.che Long Bright Spring.che slo flanger-long reverb.che slapback 2.che flanger-long reverb.che slapback w verb.che stereo flanger-med reverb.che Echo-Verb echo long verb.che...

  • Page 21: Ac75 And Ac150 Specifications

    Speaker System Impedance (Ohms) 4 Ohms Impedance Low Frequency Drivers AC75 2 x 5" Special Design Hartke full range 8 ohm, 25 watt Drive Unit AC150 4 x 5" Special Design Hartke full range 8 ohm, 25 watt Drive Unit...
  • Page 22 Notes...
  • Page 24 Hartke 45 Gilpin Avenue Hauppauge, New York 11788-8816 Phone: 1-800-3-SAMSON (1-800-372-6766) Fax: 631-784-2201 www.samsontech.com...

This manual is also suitable for:

Ac150

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