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Hartke A25 Owner's Manual
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Hartke A25 Owner's Manual

A series combo bass amplifier
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B
COMBO
COMBO
A25
3
2
1
INPUT
A35
3
2
1
INPUT
A SERIES
A
BASS
MID
TREBLE
5
0
0
4
6
-3
+3
-3
+3
-3
7
-6
+6
-6
+6
-6
8
-9
+9
-9
+9
-9
9
-12
+12
-12
+12
-12
0
10
-15
+15
-15
+15
-15
100Hz
830Hz
5K
VOLUME
BASS
MID
TREBLE
5
0
0
4
6
-3
+3
-3
+3
-3
7
-6
+6
-6
+6
-6
8
-9
+9
-9
+9
-9
9
-12
+12
-12
+12
-12
0
10
-15
+15
-15
+15
-15
100Hz
830Hz
5K
VOLUME
Hartke
Hartke
Hartke
S
BRIGHT
LIMITER
CD
PHONES
0
5
5
+3
4
6
4
6
+6
3
7
3
7
+9
2
8
2
8
+12
1
9
1
9
+15
0
10
0
10
8K
BRIGHT
LIMITER
CD
PHONES
0
5
5
+3
4
6
4
6
+6
3
7
3
7
+9
2
8
2
8
+12
9
9
1
1
+15
0
10
0
10
8K
S
A25
POWER
A35
POWER

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Summary of Contents for Hartke A25

  • Page 1 A SERIES COMBO COMBO BASS 100Hz INPUT VOLUME BASS 100Hz INPUT VOLUME Hartke Hartke Hartke TREBLE BRIGHT LIMITER 830Hz TREBLE BRIGHT LIMITER 830Hz PHONES POWER PHONES POWER...
  • Page 2 Caution: To reduce the hazard of electrical shock, do not remove cover or back. No user serviceable parts inside. Please refer all servicing 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 uninsulated "dangerous voltage"...

  • Page 3: Table Of Contents

    Rear Panel Setting Up and Using Your Hartke A Series Combo Bass Amplifier 7-8 Using the CD Input Using Equalization Specifications Copyright 2003, Samson Technologies Corp. Printed September, 2003 Samson Technologies Corp. 575 Underhill Blvd. P.O. Box 9031 Syosset, NY 11791-9031...

  • Page 4: Introduction

    There are four different models in the A Series, and this manual covers the A25 and A 35. The A25 is the most compact in the family; it's got a 25-watt amp and an 8" custom design Hartke Aluminum Series speaker. The A35 has a 35-watt amp and a 10" custom design Hartke Aluminum Series speaker.
  • Page 5 Here are some of its main features: • The A25 delivers 25 Watts of power to its specially designed 8-inch aluminum bass driver, while the A35 delivers 35 Watts to its specially designed 10-inch alu- minum bass driver.

  • Page 6: Guided Tour Front Panel

    Guided Tour - Front Panel INPUT VOLUME 1. Input - Connect your bass guitar to this standard 1/4" unbalanced jack. The A Series Input was is designed to handle low-level signals if your bass has passive electronics (that is, if it has no battery), or the signals from hotter bass pickups if your bass has active elec- tronics (that is, if it has a battery).
  • Page 7 Guided Tour - Front Panel 6. Bright - This control provides approximately 20 db of boost at 8 kHz, with a peak (bell) curve. When the knob is at the 12 o’clock (“0”) position, there is no boost or attenuation (that is, flat response).

  • Page 8: Rear Panel

    Guided Tour - Rear Panel SPEAKER 8 OHM 115 VAC 230 VAC A. AC Power Inlet - Use the supplied grounded AC power cord to connect your A Series amplifier to mains power. This cord comes supplied with the appropriate plug for your geographic area.

  • Page 9: Setting Up And Using Your Hartke Aseries Combo Bass Amplifier

    “squashed,” relative to the lower-level signals produced by standard playing. The result will be a decreased dynamic range but an overall leveling of signal throughout the full pitch range of your instrument. In the A25 and A35, the Limiter LED will light steadily green...
  • Page 10 If you encounter difficulty with any aspect of setting up or using your Hartke A Series Bass Combo Amplifier, you can call Samson Technical Support (1-800-372-6766) between 9 AM and 5 PM EST, or contact your local distributor.

  • Page 11: Using The Cd Input

    Using the CD Input Your A series amplifier features a 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. In fact, you can plug any line level signal into the CD input including the signal from a keyboard or drum machine.

  • Page 12: Using Equalization

    Using Equalization The Hartke Systems A Series Bass Amplifier gives you enormous control over shaping the sound of your bass, using a process called equalization. To understand how this works, it’s important to know that every naturally occurring sound consists of a broad range of pitches, or frequencies, combined together in a unique way.
  • Page 13 The specific EQ you will apply to your bass signal is very much dependent upon your par- ticular instrument and personal taste and playing style. However, here are a few general suggestions: • For that super-deep reggae or Motown sound, boost the Bass EQ slightly while attenuating the Treble EQ.

  • Page 14: Specifications

    -20 dBu -10 dBu 67 dB 60 dB 80 dB 75 dB +24 dB (A25), +24 dB (A35) +48 dB (A25), +55 dB (A35) +14 dB (A25), +14 dB (A35) +38 dB (A25), +45 dB (A35) ±15 dB ±15 dB ±15 dB...
  • Page 16 Hartke is distributed world-wide by SamsonTechnologies Samson Technologies Corp. 575 Underhill Blvd. P.O. Box 9031 Syosset, NY 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) Fax: 516-364-3888 www.hartke.com www.samsontech.com...

This manual is also suitable for:

A35