A SERIES B A S S COMBO A25 BASS 7 0 A35 +6 +12 +12 -15 BASS -3 6 7 8 9 1 0 INPUT 10 VOLUME +6 -12 +12 +15 100Hz -12 +12 +15 0 10 POWER LIMITER 5 -12 +12 +15 CD 5 6 3 4 7 +9 2 5K 9 1 10 4 +6 -15 8 BRIGHT +3 -6 9 0 10 PHONES A35 6 3 7 8 2 1 A25 7 8K +9 -9 830Hz 0 0 -3 +6 -15 9 1 TREBLE +3 -6 +9 -9 3 8 2 +15 PHONES 6 4 7 5K 0 -3 +3 -6 -9 -15 +12 -15 MID 0 5 4 3 2 3 +9 2 830Hz CD 5 6 4 +6 -12 +15 LIMITER 5 +3 -6 +9 -9 -1
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.
Table of Contents Introduction 2 A SERIES Combo Bass Amplifier Features Guided Tour Front Panel Rear Panel 3 4-5 6 Setting Up and Using Your Hartke A Series Combo Bass Amplifier 7-8 Using the CD Input 9 Using Equalization 10 -11 Specifications Copyright 2003, Samson Technologies Corp. Printed September, 2003 Samson Technologies Corp. 575 Underhill Blvd. P.O.
Introduction We know you don’t like reading owners manuals, but you’ve just purchased one of the finest bass amplifiers around, and we want to tell you about it! So, before you plug in and start popping and slapping, we’d like to suggest you take just a few moments out to scan these pages. We’ll make it as painless as possible, we promise—and, who knows, you might just pick up a tip or two.
Hartke A25 and A35 Combo Bass Amplifier Features The Hartke A Series offers all the newest concepts in state-of-the-art aluminum drive bass amplification in an extremely compact size and affordable price. 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 aluminum bass driver.
Guided Tour - Front Panel 1 2 3 4 BASS -3 6 7 8 2 9 1 0 INPUT MID 10 VOLUME -3 +3 -6 +6 TREBLE -12 +12 +15 100Hz -3 +6 +12 -15 +15 830Hz 3 4 7 +9 2 -12 +12 -15 +15 5K 0 10 8K PHONES A25 6 3 7 8 2 9 1 11 CD 5 6 4 +6 +9 -9 -12 LIMITER 5 +3 -6 10 9 8 BRIGHT 0 +3 -6 +9 -9 -9 -15 7 0 0 5 4 3 6 5 8 9 1 0 10 POWER 1. Input - Connect your bass guitar to this standard 1/4" unbalanced jack.
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). As it is turned clockwise from the “0” position, the frequency area is boosted; as it is turned counterclockwise from the “0” position, the frequency area is attenuated. For more information, see the “Using Equalization” section on page 11 in this manual. 7.
Guided Tour - Rear Panel A C B SPEAKER OUT D E DIRECT OUT EFFECTS LOOP WARNING DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE AVIS A25 RISQUE DE CHOC ELECTRONIQUE NE PAS OUVRIR CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE FUSE ATTENTION UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE 25 WATT BASS AMPLIFIER 8 OHM 115 VAC 2A 230 VAC 1A MADE IN CHINA SERIAL NUMBER PREAMP OUT AMP IN DESIGNED AND ENGINEERED IN THE UNITED STATES BY HARTKE www.hartke.
Setting Up and Using Your Hartke A SERIES Combo Bass Amplifier Setting up your Hartke Systems A Series Combo Bass Amplifier is a simple procedure which takes only a few minutes: 1. Remove all packing materials (save them in case of need for future service) and decide where the amplifier is to be physically placed. You may decide to use the “kickback” position for additional directionality and high frequency clarity.
Setting Up and Using Your Hartke A SERIES Combo Bass Amplifier when no compression is being applied, will go out whenever small amounts of compression are being applied and will flash or light steadily red when limiting (severe compression) is being applied. 9. Test the headphone output by turning the Volume control to its minimum (fully counterclockwise) position and then connect a standard stereo headphone to the frontpanel Phones jack.
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. Connect the CD player or other Line level device to the CD Input using standard RCA cable.
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. This blend is what gives every sound its distinctive tonal color.
Using Equalization The specific EQ you will apply to your bass signal is very much dependent upon your particular 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. •To remove boxiness and make your instrument sound more “hi-fi,” try attenuating the Mid EQ control. •For a twangy, cutting sound, try boosting the Treble EQ.
Specifications 1. Rated Output Power (@ 1 kHz, 4 ohm, 1% THD) A25 A35 25 w 35 w 2. Rated Input Level (@ 1 kHz) Input 1 Input 2 -20 dBu -10 dBu 3. Total Harmonic Distortion (@ 1 dB below rated output, 1 kHz typical) A25 A35 0.2% 0.3% 4. Signal To Noise Ratio (re: 1 Wrms @ 1 kHz) A25 A35 67 dB 60 dB 5. Dynamic Range (re: Rated output @ 1 kHz) A25 A35 80 dB 75 dB 6. Signal Gain Input 1 to Direct Out / Preamp Out Input 1 to Speaker Out Input 2 to Direct Out / Preamp Out Input 2 to Speaker Out 7.
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.