sbrag Posted August 30, 2014 Share Posted August 30, 2014 (edited) I picked up a Hohner Jack yesterday which needs a bit of tlc. Im waiting for some strings before I can try it properly but when I put a new battery in for the active circuit there is a rectangular metal box next to where the battery goes. It has a plastic crosshead screw in it and I've not seen in a bass before. It may be a stupid question but does any one know what it is/does? Thanks Edited August 30, 2014 by sbrag Quote Link to comment Share on other sites More sharing options...
lee4 Posted August 30, 2014 Share Posted August 30, 2014 It's a pot for balancing the active and passive volumes. Quote Link to comment Share on other sites More sharing options...
sbrag Posted August 30, 2014 Author Share Posted August 30, 2014 Great thanks for your help. Much appreciated. Quote Link to comment Share on other sites More sharing options...
paul_5 Posted August 30, 2014 Share Posted August 30, 2014 Those Jacks are lovely basses. The string spacing is a little narrow for me, otherwise I'd never have sold mine. I had 3 at one point. Quote Link to comment Share on other sites More sharing options...
sbrag Posted August 31, 2014 Author Share Posted August 31, 2014 I always had a soft spot for them and the b2s back in the early 90s. I needed a cheap back up bass and saw this. It needs a bit of love and came with no strings which I'm just waiting on strings direct to deliver. Once I've got it working ill stick ip some pics. Quote Link to comment Share on other sites More sharing options...
geoffbyrne Posted August 31, 2014 Share Posted August 31, 2014 I had a B Bass (Jack with a headstock). It also had this arrangement of the battery box holding both a battery and a rectangular metal box with a screw adjustment. In my case, it turned out to be containing the pre-amp, and the screw adjusted the output up and down. G. Quote Link to comment Share on other sites More sharing options...
sbrag Posted September 4, 2014 Author Share Posted September 4, 2014 Part 2 of the saga is that my strings arrived yesterday, so ive got to play it and passive it sounds great but the active circuit doesnt work. The tone controls are loose so that may have something to do with it but all the wires look intact and the light comes on when you flick the active/passive switch. I've tried turning the plastic screw in the metal box to no avail. Is there anything else to check? Cheers Quote Link to comment Share on other sites More sharing options...
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