tommo Posted June 15, 2009 Report Share Posted June 15, 2009 Well, im just finishing making my bass, and ive come to the pickups. Now ive looked out "there", and all the aftermarket active bass preamps seem to be crap and not what i want. Does anyone out there know how to, or where i can get a diagram of how to wire me up an active bass eq, which includes only bass and treble eq, and volume? I also need to input 3 pickups to it. Any help would be appreciated, cos i aint goin nowhere fast. Quote Link to comment Share on other sites More sharing options...
Donovan Posted June 16, 2009 Report Share Posted June 16, 2009 Well, im just finishing making my bass, and ive come to the pickups. Now ive looked out "there", and all the aftermarket active bass preamps seem to be crap and not what i want. Does anyone out there know how to, or where i can get a diagram of how to wire me up an active bass eq, which includes only bass and treble eq, and volume? I also need to input 3 pickups to it. Any help would be appreciated, cos i aint goin nowhere fast. You can try DIYstompboxes site. You will need to research a lot in order to understand what you need to design and how to do it, unless you can get someone to do it for you or find one pre-drawn on the web, though my experience with the pre-drawn web stuff shows they are not trustworthy and can cause a lot of confusion/disappointment, particularly as a lot of them are designed for dual power supplies which is misleading for those of us guitar enthusiasts. Just make sure you look for SINGLE SUPPLY circuits in your hunt. It does not matter how many pickups you are going to have as you'll be pulling off the line after they're already mixed/switched. You will need: A gain stage (boost) if so desired... desire it, at least some. An active filter for each frequency band, so 1 for lows, 1 for highs... you pick the frequency bands. A mixer to blend the 2 two to your delight. They do not need to be in that order necessarily. All in all this means a battery, a board, 3 op amps, and a bunch of resistors/caps to support them. Should you go the complete DIY route and have a vague grasp on electronics, I'd recommend you start by reading these: http://www.allaboutcircuits.com/vol_3/chpt_8/1.html http://courses.cit.cornell.edu/bionb440/da...ingleSupply.pdf http://focus.ti.com/lit/an/sloa093/sloa093.pdf http://www.all-electric.com/schematic/simp_mix.htm If you come up with a basic drawing as a starting point, help will be here to assist in refining it. Good luck. Quote Link to comment Share on other sites More sharing options...
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