Spectro Amp
All-Tube-Amplifier for Bass and Guitar
There is no need to reinvent the wheel, when building a new vehicle with some improvements. Nevertheless - reworking some details might be convenient - when you're looking for a significant improvement. This is, how you might discribe this Amplifier in the figurative sense. Some 'classical' circuitdesigns have been taken over, a lot has been redesigned and completely new developed. The result is at least an outstanding amp-project with an individual and unique look. The main characteristics of this amplifier are a 'big size' tone and excellent, detailed audio-response. Basicly this unit is an 'All-Purpose' Musical Amplifier and fits all audio applications. The power-amplifier, 100W or 200W r.m.s. delivers steady 25Hz to 18KHz fullrange audio power. However, in spite of the 'high quality' characteristics of the power amplifier, the preamp section is designed for Guitar and Bass - specialized for each instrument. Although the amplifiers requires only a few control elements, it offers a great versatility when operating 'Booster', Volume and Master-Volume in a right and skilful way. Thus the Amp can perform as a 'clean' Bass-Head as well as a 'furious Rock-Beast'.
Secifications and Features - Overview
Power-Amplifier in Ultralinear connection 100W (4 x EL34) or 200W (4 x KT88) r.m.s. output
flexible preamp configurations to optimize the amp for bass or guitar. (2 kinds of Boosters and a variable Sound-Control design)
Modifications and Extensions:
3-Position Impedance-Switch
Weight:
Size:
iluminated (RGB)Fullcolour-Plexiglass-Frontpanel
Output Power-Switching 50/100W or 100/200W
switched Speaker-Emulation at Di-Out
Single or Dual Tonestack
active 3-Band-Soundcontrol (specially for Bassamplifiers)
4 - 8 - 16 Ohm (prefered for Guitaramplifiers)
2 - 4 - 8 Ohm (prefered for Bassamplifiers)
Spectro GB100 ca. 17,5Kg (39lb)
Spectro GB200 ca. 23Kg (51lb)
Spectro GB100 610 x 240 x 230mm (Width, Depth, Heigth) 24"x 9,5"x 9"
Spectro GB200 610 x 285 x 230mm (Width, Depth, Heigth) 24"x 11,2"x 9"
Tolexcover and colour at your choice
Flightcase available
Lettering in English or German
Customizing the spectro amplifier
Controlpanel
Preamplifier with 3-Band Passive Soundcontrol
Preamplifier with 3-Band Passive, Dual-Tonestack Soundcontrol
Preamplifier with 3-Band Active Soundcontrol and 2 switchable frequencies each band (only available for 200W Amps at the moment)
Booster selection
Bass-Booster
Guitar-Booster - identical to the 'Hornet Tube Booster'
Both Bass- and Guitar-Booster are looking identical at the controt-panel. But they sound different and do have different circuitdesigns
Rear connecting panel
Backview of a 200W Guitaramp with additional controlknobs for plexi-panel-light, speaker emulation switch and output-power switch
Output-connectors = phone jack Speaker-Selector-Switch = 4-8-16 Ohms
Backview of a 200W Bassamp with additional controlknobs for plexi-panel-light, speaker emulation switch
Output-connectors = Speakon Speaker-Selector-Switch = 2-4-8 Ohms
Backview of a 200W Bassamp with additional controlknobs for plexi-panel-light, speaker emulation switch and output-power switch
Output-connectors = Speakon Speaker-Selector-Switch = 2-4-8 Ohms
Speaker Emulation
The switchable speaker-emulation delivers an output signal corresponding to the frequency response of a single loudspeaker in a cabinet. There are different emulated models for both guitar- or bassamplifiers available.
Illuminated Frontpanel
Adjustment of all 'Rainbow'-Colours within one 300° Potentiometer turn. The right (max.) position will set the colour 'white'.
If you like to ask for prices, if you have other requests, please use the Exel sheet below at first to customize your desired amp. Please send the filled in sheet back to post@wolfgang-behn.de and you will hear from me as soon as possible.
