MicroBass-III Series Congratulations Table Of Contents Your purchase of a new Gallien-Krueger MicroBass- Safety Information III Series Amplifier is surely the result of much careful GK Philosophy consideration on your part. For our part, we at Gallien- Setup & Quickstart Krueger are pleased that you chose us and are confi- Front Panel Controls dent that you will be a satisfied customer.
MicroBass-III Series Safety Information Please read all enclosed safety precautions, be- Connecting to AC Power: fore connecting or operating this product. When setting up, make certain that the AC plug is easily accessible. If mounting in a rack, ensure that the AC Verify Line Voltage and Amperage Before Use: mains can be easily disconnected by a plug or by an Your new MicroBass Series amplifier has been fac-...
MicroBass-III Series GK Philosophy I have never seen the point in doing things the way If your MB Series amplifier or combo is missing any others have done them. I also have not been very items, or if you encounter problems while setting up interested in following the latest fad.
MicroBass-III Series Setup & Maintenance Quick Start Setup: Plug It In: To insure proper operation and to avoid potential safety Set the power switch to Off and connect the supplied hazards, place the unit on a firm, level surface. Do not power cord, from the amplifier’s AC receptacle, to an plug or unplug the instrument or speaker cable while AC power outlet of proper voltage and power rating...
MicroBass-III Series 15 16 17 18 19 20 21 22 23 24 27 21 22 23 26 27 Front Panel Controls 1 Balanced Direct Out (MBS Only): An electroni- 16 Stereo Chorus LED (MBE Only): LED is lit when cally balanced low Z output. This is permanently set to the Stereo Chorus is engaged.
MicroBass-III Series 9 10 11 Rear Panel Controls Internal/External Speakers 1 Power On/Off Switch: Press in to turn the amplifier The MB-III Series combos feature one 8 Ohm, 12” on, out to turn it off. Power/Protect LED is on when the low resonance speaker, which delivers surprising low- amplifier is on.
MicroBass-III Series Sound Advice Input Volume vs. Output Level: While lowering the Master will add more growl while The Input Volume adjusts the signal as it enters the keeping the sound level relatively even. The ‘growl’ is preamp section. Changes to it will have an impact on actually a small amount of even order harmonic dis- the Send jack, Boost control, and the Direct Output if tortion.
MicroBass-III Series Tech Talk MB Series Overview: Voicing Filters: The MB Series is a flexible, state-of-the-art bass am- Voicing filters are used to completely re-voice the plifier, designed to deliver maximum performance, and amplifier in ways that an equalizer cannot. They are be simple to operate.
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MicroBass-III Series Low Noise Operation: connections. Be sure that you are not exceeding the The MB-III Series uses a high gain, high headroom, maximum recommended load described in this manual. low noise input stage. It has such a large dynamic range (60v p-p) that very few instruments can over- drive it.
Block Diagram MicroBass Series Specifications: Output Power: 100W @ 8 Ohms 150W @ 4 Ohms Amplifier Protection: Full short circuit, thermal,& RF protection. Input Section: Stable into reactive and mismatched loads. Maximum Input Level 0.45V Rms Five second muted warm-up. With -14dB pad 2.0V Rms Input...