BASS AMPLIFIER Hartke Systems 2000/3500
Introduction 3 Features 4 Guided Tour 5 Model 2000 Front Panel Model 2000 Rear Panel Model 3500 Front Panel Model 3500 Rear Panel 5 7 9 11 Setting Up and Using the Model 2000/3500 13 About Equalization 15 About Compression 17 Appendix A: Impedance vs.
Introduction Congratulations on purchasing the Hartke Systems Model 2000/3500 Bass Amplifier! Although these units are designed for easy operation, we suggest you first take some time to go through these pages so you can fully understand how we’ve implemented a number of unique features. The two models covered by this manual differ in the following ways: • The Model 2000 provides 200 watts of power (into 4 ohms), while the Model 3500 provides 350 watts of power (into 4 ohms).
Features The Hartke Systems Model 2000/3500 Bass Amplifiers offer all the newest concepts in bass amplification. Here are some of their main features: • Power to spare—in the case of the Model 2000, 200 watts into 4 ohms, and, in the case of the Model 3500, a full 350 watts into 4 ohms. • Our unique Transient Attack® circuitry which ensures that every nuance of your bass performance is reproduced faithfully. • Two Pre-Amp input knobs, allowing custom blending of tube and solid state sounds.
Guided Tour - Model 2000 Front Panel 3 1 4 6 5 8 7 10 9 11 Hartke Systems MODEL 2000 BASS AMPLIFIER 200 WATTS Transient Attack GRAPHIC EQUALIZER INPUT PRE AMP A PASSIVE 4 5 3 30Hz B 6 4 7 3 5 1 9 0 10 4 7 8 1 9 0 125Hz 250Hz 500Hz 1KHz 2KHz 3KHz 5KHz 10 3 5 6 +15 +12 +9 +6 +3 +2 0 -2 -3 -6 -9 -12 -15 IN 7 2 8 1 0 9 0 ∞ ACTIVE OUT -15 TUBE SOLID STATE CONTOUR 8KHz +15 6 8 2 2 64Hz 3 0 3 5 30Hz 64Hz 125Hz 250Hz 500Hz 1KHz 2KHz 2 3KHz
Guided Tour - Model 2000 Front Panel 5. Compression control - This determines the amount of compression (peak signal reduction) by simultaneously adjusting both threshold and compression ratio (which ranges from 2:1 to infinity [limiting]). At the fully counterclockwise “Off” position, the circuitry is bypassed and no compression is applied (the knob clicks when set to the “Off” position). As the knob is raised clockwise (at settings from “1” to “∞”) increasing amounts of compression are applied.
Guided Tour - Model 2000 Rear Panel 1 3 5 6 EFFECT Distributed Exclusively by Samson Technologies Corp. Hicksville, New York 11802 115 Hartke Systems RETUIRN MODEL 2000 200 WATTS 8Ω = 120 WATTS 4Ω = 200 WATTS ~ AC INPUT 115V/230V 50/60Hz FUSE 5A/250V, 180W (115V) 2.5A/250V, 450W (230V) SEND SPEAKER OUTPUTS CAUTION TO PREVENT SHOCK, DO NOT OPEN. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE TO RAIN OR MOISTURE.
Guided Tour - Model 2000 Rear Panel 5. Effect Return jack - Use this 1/4” unbalanced jack to return low impedance (600 ohm) signal to the Model 2000 from a professional outboard effects processor such as a reverb, echo, chorus, flanger, or harmonizer device.* 6. Effect Send jack - Use this 1/4” unbalanced jack to send low impedance (600 ohm) signal from the Model 2000 to a professional outboard effects processor such as a reverb, echo, chorus, flanger, or harmonizer device.
Guided Tour - Model 3500 Front Panel 3 1 4 7 5 9 8 11 10 12 Hartke Systems MODEL 3500 350 WATTS Transient Attack GRAPHIC EQUALIZER INPUT PRE AMP A PASSIVE 4 5 3 30Hz B 6 4 7 3 5 1 9 0 10 4 7 8 1 9 0 125Hz 250Hz 500Hz 1KHz 2KHz 3KHz 5KHz 10 5 6 3 +15 +12 +9 +6 +3 +2 0 -2 -3 -6 -9 -12 -15 IN 7 2 8 1 ∞ 0 0 9 ACTIVE OUT -15 TUBE SOLID STATE 3 0 3 5 64Hz 125Hz 250Hz 500Hz 1KHz 2KHz 3KHz 6 5KHz 3 5 MASTER 0 3 5 15 -18 15 +18 4 5 15 -18 2
Guided Tour - Model 3500 Front Panel 6. Compression control - This determines the amount of compression (peak signal reduction) by simultaneously adjusting both threshold and compression ratio (which ranges from 2:1 to infinity [limiting]). At the fully counterclockwise “Off” position, the circuitry is bypassed and no compression is applied (the knob clicks when set to the “Off” position). As the knob is raised clockwise (at settings from “1” to “∞”) increasing amounts of compression are applied.
Guided Tour - Model 3500 Rear Panel 1 SPEAKER OUTPUTS Distributed Exclusively by Samson Technologies Corp. Hicksville, New York 11802 8 9 DIRECT OUT SEND POST NORMAL PRE GND LIFT 8Ω ~ AC INPUT 115V/230V 50/60Hz FUSE 8A/250V, 300W (115V) 4A/250V, 740W (230V) RETURN BALANCE 0 CAUTION TO PREVENT SHOCK, DO NOT OPEN. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE TO RAIN OR MOISTURE. ASSEMBLED IN R.O.K.
Guided Tour - Model 3500 Rear Panel 5. Effect Send jack - Use this 1/4” unbalanced jack to send low impedance (600 ohm) signal from the Model 3500 to a professional outboard effects processor such as a reverb, echo, chorus, flanger, or harmonizer device.* Output level is approximately 0 dB to +4 dB and is post-EQ and post-compression but unaffected by the setting of the Master Volume control.
Setting Up and Using the Model 2000/3500 Setting up your Hartke Systems 2000/3500 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. To avoid potential overheating problems, be sure that the rear panel is unobstructed and that there is good ventilation around the entire unit, particularly behind the rear-panel fan. SPEAKER OUTPUTS 8Ω 8Ω 2.
Setting Up and Using The Model 2000/3500 7. Experiment with altering the balance of the two Pre-Amp knobs, listening to the effect each has on the overall sound. Depending upon the specific instrument you are using and your personal taste, you may prefer the sound of one over the other, or you may prefer a particular blend of the two. Note that, when both are used at equal settings, the amplifier will be twice as loud as when only one is used.
About Equalization The Hartke Systems Model 2000/3500 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.
About Equalization To find out how each graphic equalizer slider affects the sound of your particular bass, start with all ten bands flat (that is, all ten sliders at their detented “0” center position). Then, one by one, raise and lower each slider, listening carefully to the effect of each. If you don’t specifically need to utilize the ten-band graphic equalizer, bypass it by setting the In/Out switch to its “Out” position.
About Compression The dynamic range of a sound is the difference between its loudest and softest points. For example, as you play your bass, you’ll probably find that some notes (for example, notes played on the upper frets of the lowest string) are considerably louder than others.
Appendix A: Impedance vs.
Appendix B: Block Diagram SEND 50 mV, IN 0 dB TO +4dB COMPRESSOR IN/OUT SWITCH FIXED EQ RETURN VR TUBE VR SOLID STATE RMS DETECTOR COMPRESS VCA MIXER 2 BAND CONTOUR 10 BAND EQ 10 BAND OUT 10 BAND IN MASTER SECTION AMP HPF PROTECTION Model 2000 SEND 50 mV, IN 0 dB TO +4dB COMPRESSOR IN/OUT SWITCH FIXED EQ RETURN VR TUBE VR SOLID STATE RMS DETECTOR COMPRESS VCA MIXER 10 BAND EQ 2 BAND CONTOUR PRE 2 1 POST 10 BAND OUT GND.
Appendix C: Changing the Model 2000/3500 Voltage 115 115 Following are step-by-step instructions for changing the mains voltage of the Model 2000/3500. WARNING: Before carrying out this operation, remove the power cord! 1: Insert a small screwdriver into the slot beneath the fuse sled and gently press in and up. The fuse sled will pop out approximately 3/8" inch. 2: Remove fuse sled. 230 115 3: Use a small pair of needlenose pliers to gently pull out the mains jumper.
Specifications 1. Input Sensitivity Passive Input Active Input 100 k Ohms 20 mv. 100 k Ohms 60 mv. 2. Rated Output Power Model 2000 200 watts @ 4 ohms 120 watts @ 8 ohms 350 watts @ 4 ohms 240 watts @ 8 ohms Model 3500 3. Total Harmonic Distortion Model 2000 Model 3500 less than 1% less than .5% 4. Signal To Noise Ratio Model 2000 Model 3500 approx. 70 dBm approx. 78 dBm 6.
