Monday, 17 March 2008
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Well, I finally bit down and modded my bass. I only had to drill one more hole. The OBP-3 sounds GREAT in this bass! I still have to install a stereo Nutrik jack so it will switch on and off. I just hardwired it to test it. Funny though, all the controls are backwards, meaning counter-clockwise is gain. Maybe when the right jack comes, it will right itself. The only things I saved are the volume pot and the 4-way. I was going to put a stacked volume and lose the 4-way, but I decided to drill it. I'll try some pics. I hope they work.
13 years ago
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#9276
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Stuffed in.
13 years ago
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#9282
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[quote="rockbobmel":1qb4r1g0]Funny though, all the controls are backwards, meaning counter-clockwise is gain..[/quote:1qb4r1g0] Sounds like the input and ground leads on the pots may be reversed.
13 years ago
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#9288
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That's exactly what it was. I just thought of something. If I install a 3 lead Neutrik jack and the housing is plastic, How do I connect the grounds to close the circuit?
13 years ago
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#9289
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[quote="rockbobmel":31tc1t1e]If I install a 3 lead Neutrik jack and the housing is plastic, How do I connect the grounds to close the circuit?[/quote:31tc1t1e] I think Sheldon uses the Neutrik jack with a metal housing. I'm not sure that answers your grounding question, though.
13 years ago
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#9291
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The stock Neutrik Jack is both stereo and metal so no need to change. The ground buss is located on the rotary switch - all ground wires go to the rotary and a single ground lead goes to the jack.
13 years ago
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#9318
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Thanks Sheldon. Man, does this thing RIP! I can also get the stock passive sound exactly when all controls are in their center detent position. Do you have the matching STACKED KNOBS? I LOVE this bass!
13 years ago
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#10240
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My stacked knob has the old style on the bottom and new knob on the top. You may have to do something similar.
12 years ago
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#12218
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A friend of mine is selling an OBP-3 with complete circuit pretty cheap, so I'm seriously considering the upgrade. Aside from an extra hole for the mid pot and replacing the Blue EQube with mid-freq switch, is there anything major to consider? I guess I'd lose the 4-way selector to a pickup pan, so won't have series/parallel options anymore. I tend to only use bridge pickup and both pickups in series (is that loudest?), so probably won't miss it. Cheers, EG
12 years ago
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#12219
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Double post, oops.
12 years ago
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#12225
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[quote="evilgus":3b5j8b9s]A friend of mine is selling an OBP-3 with complete circuit pretty cheap, so I'm seriously considering the upgrade. Aside from an extra hole for the mid pot and replacing the Blue EQube with mid-freq switch, is there anything major to consider? I guess I'd lose the 4-way selector to a pickup pan, so won't have series/parallel options anymore. I tend to only use bridge pickup and both pickups in series (is that loudest?), so probably won't miss it. Cheers, EG[/quote:3b5j8b9s]No, It's straight forward. I am glad I kept the 4 way switch. With it now being active, The series/parallel gives you a different gain and tone response to play with. Especially with tube amps. When mine was passive, I only used it on the louder setting. The pan idea sounds good too! Maybe you can do that with the volume knob hole and lose the master volume.
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