Question about Music
I have three knobs on a Washburn XB 120 bass guitar that I purchased used. It has 2 single knobs that seem to be individual volume controls for each of the two pick-ups. It has a push/pull/turn knob that when pushed in activates the active preamp and boosts the volume. When it's pulled out it is normal volume. It doesn't appear to be changing anything when you turn it either direction. Does anyone know exactly how these controls should be functioning? I can't find a user manual or wiring diagram anywhere.
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Posted on Jan 02, 2017
The preamp section has a problem. It could be anything in the preamp but is OFTEN the input jack itself. They take a lot of abuse.
Also the insert jack contacts that forward the preamp to the power amp if no external FX are used can go bad.
Additional things are circuit board cracks caused by rough handling and also controls that have had the knobs mashed in which can destroy the potentiometers they are connected to.
Posted on Sep 22, 2009
Ninety percent of what you want depends on the amp and speaker you are using.
You likely will want a 15 inch speaker in a bass cabinet to start with and a decent midrange driver as well.
No amount of EQ will fix an audio system that just can't put out the bass tones.
Posted on Nov 15, 2009
It very well may be. Sometimes the volume is arranged so that it will not go clear down... Hey, it saves the manufacturer a lot of calls saying there is no volume by people who forget to turn the volume up.
Posted on Dec 13, 2009
Match your resources of your guitar at this site to find typical schematic:
Posted on Jul 30, 2010
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