Entry for September 2019's Guitar Of The Month is now open!
Search the Community
Showing results for tags 'preamp'.
Found 2 results
Just got a new gigging acoustic (cole clarke angel), but immediateley noticed what I'm missing from my old gig axe, a crafter SA (similar to the more popular taylor T5), in that it has tge ability to switch and blend peizo and electromagnetic pickups which was great for looping. so, I have orded a soundhole humbucker to put in it, an "a little thunder" which has a 6 string output. and an octaver bass only output. rather than start hacking into my new guitar, I'm opting for external mixing/eq, BUT, I use wireless most of the time, so I need a passive bodypack mixer before my wireless.... I've accepted it will need to be a custom build, BUT, on the off chance anyone is aware of a commercially available product please let me know (likewise, if you've seen a gold/brass locking strap solution for a locking strap with trs jack passthrough, like the acoustilok by music nomad, im struggling to find that in the right colour too). anyway, failing that, onto building a belt pack... having never done such a thing im after any tips you can offer. particularly- clip & housing, wtf do I use? knobs, potentiometers, faders, what is and isnt workable for me? im thinking 2 in one knobs would be perfect for eq controls for bass and 6string humbucker output so i have full eq control over that, but, I need small to make surenit all fits in a tiny gousing, what would you suggest, and what other electronics will i require to get good tone control from said knobs ill be wanting 3x channels in, (acoustic, bass, electric) & 3x channels out,. channel 1 out, ive decided a 5 way toggle to switch from acoustic only, electric only, acoustic + bass, electric + bass, acoustic + electric with 3x level controls (one for each of the input channels) and an output channel mute/off toggle channel 2 out will be dedicated bass with a volume attenuator and a mute toggle. channel 3 out will be the same as channel 1 this gives me the option to route acoustic to an aux input on my looper while sending the electric through my fx chain, but being able to switch it up if needed, and being able to run a single output mode before my wireless with the choice of one or all signals. I toyed with the idea of crossfaders, but have since decided it will be more limiting as i would have to chose between fixed contour profiles and some situations i may want addition of humbucker without losing the acoustic , and a linear fade in other situations, so individual voluumes it is... im mostly handy with a soldering iron (albeit pretty sloppy and messy with my fit n finish, hence the desire to not butcher the guitar), Where do i get parts, and what do i actually require to make life easy as possible?
Although blended piezo and magnetic systems seem to have entered a fairly mainstream space right now, I can't seem to find many diagrams to achieve what I'm after. Here's the idea: On the magnetic side, I have an EMG 89 and 81TW, Both are dual mode (quasi-coil-split). I have 2 25K push/pull pots for mode switching ("coil splitting") duty, plus an extra "normal" 25k pot that was originally meant for tone. The switch is a Gibson-style 3-way. For the magnetic system, the plan is to use the push/pull as 1V, 1T and ditch the normal pot. So, a master volume and a master tone that I'd probably rarely use, and a push/pull dedicated to each EMG. On the piezo side, I haven't actually procured anything yet preamp-wise, but I was thinking of grabbing the smallest acoustic preamp I can find, and finding some space for it, maybe with the panel facing outwards on the back of the guitar. We'll see if I can find one that fits; otherwise I might be back to square one. Assuming the components work out, the piezo elements "tie" together and feed into the preamp, which has its own output. I don't know if the impedances of the magnetic and piezo systems are going to be an exact match because they don't seem to list the impedance of these cheap acoustic preamps... but I'm hoping that since both systems are active, at the output stage there's going to be a match.... maybe that's too much to hope for? Assuming they are a match, this means that each respective system essentially has its own master volume. While a blend pot could be interesting, I'm fine with just two separate volume controls to create my "blend". That being the case, what is the right stage to tie these things together? Both of them just feed the output jack? Thanks for any input you might have!