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  1. MPU

    How would you make Ovatiom Magnum- kind of a neck?

    I’m planning to make an Ovation Magnum- inspired bass. I’m at the planning of the neck. The neck has 12mmx2mm carbon strip at the back of the neck all the way from the heel to the headstock end. I’m planning to make the strip by making a center piece of the neck to the correct shape minus 2mm...
  2. MPU

    MPU Scroll bass

    Somehow I’ve grown to like the looks of Ampeg Scroll bass. Bruce has documented his way of making Scroll basses to the smallest detail. I talked with Bruce and it’s ok to make my version of the Scroll. First I surfed the web to find out good pics for drawings and found pdf plans for Scroll...
  3. MPU

    Two volume two tone selector switch wiring diagram

    I have an Ibanez RS824 bass that has 2vol/2tone/pickup selector switch wiring. I’m going to rewire it. How should I rewire it to get least interplay between volumes or tones? I mean how to wire it so that one volume effects only one pickup and one tone effects only one pickup?
  4. MPU

    Ibanez RS824 restoration

    I bought a mistreated RS824 from 1980. The fretboard was wrecked when defretting and it was deep gouged when sanded. I had to replace the fretboard. Out came my shop iron and after 20min of heating and careful prying the fretboard was off. I had thought that RS824’s had Tuned Response...
  5. MPU

    Leather gig bag sewing thread?

    I’m planning to make a hand sewn leather gig bag. While not exactly luthiery, I guess it’s ok to make a thread about this project?
  6. MPU

    How I made tapered wood knobs

    Here’s a pictorial of how I made tapered wood knobs. First I drilled a recess for potentiometer nut. Then I changed to 5mm drill. Then 20 mm plug drill. All the tiime the wood piece was clamped to the vice. Then I had plugs ready. I threaded the 5mm hole to M6, wicked ca into the...
  7. MPU

    Dingwall pickup dimension

    I’m looking for a five string long scale (no Super basses) Dingwall pickup dimensions. Can anyone help?
  8. MPU

    Sanding relief

    I’m planning to make a neck without a truss rod, like Vigier 90/10 where instead of an adjustable truss rod there’s a carbon fiber beam that makes the truss rod unnecessary. I don’t need reasons why I need a truss rod, I’m looking for advice on sanding relief and leveling the reliefed frets. My...
  9. MPU

    Active blend with adjustable gain for both inputs?

    I’m looking for an active blend with adjustable gain for both inputs. My intention is to blend pickups with different outputs (P and J) and have equal outputs when soloed. Alembic has this kind of blend but the price is… well, Alembic. Schematic is fine as well.
  10. MPU

    MPU Tempter

    After playing my AriAlembic for a while I found out that I really like the sound of Alembic pickup with filter preamp. Then I found an Alembic PJ set with filter pre and… here I go a gain. I have thermo aged maple, mahogany, Gotoh tuners and brass waiting to be used. I started making the bridge...
  11. MPU

    Dummy coil; how similar to the magnetic coil should it be?

    Dummy question about dummy coils; how similar to magnetic coil and in what way (size, number of rounds, resistance or impedance) should a dummy coil be to make a humbucking pickup? If the only known factors are resistance and size of coil in magnetic pickup are they enough for dummy coil?
  12. MPU

    Alembic Activator MXY depth?

    I’d like to know the depth of an Alembic Activator MXY pickup. Does anybody have one that could be measured?
  13. MPU

    Marko MPUmpson four string bass

    I’ve never really liked Carl Thompson basses. Until now. I seem to like basses that have something special going on, whether it is shape, materials, pickups or something else. After taking a closer look at Carl Thompson basses, especially the ones that have 3d-carving they really have something...
  14. MPU

    Most 90’s colour

    I just purchased an early 90’s Blaster Kubicki copy. I’m planning to refin the body as it is a bit too roadworn to my taste. What would be the most 90’s colour? Is there anything better than colour swift green-purple?
  15. MPU

    Most 90’s colour

    I just purchased an early 90’s Blaster Kubicki copy. I’m planning to refin the body as it is a bit too roadworn to my taste. What would be the most 90’s colour? Is there anything better than colour swift green-purple?
  16. MPU

    Vero layout wizards?

    I’m trying to make a Jazz Bass Plus preamp clone from this schematic. I’m sure I CAN make a vero board layout but it will take ages and be huge sizewise. Are there any vero layout wizards here that would be willing to help?
  17. MPU

    MPUbicki build thread

    Here’s some pics of my latest build. I’ve posted questions and pics on other threads. Gluing of neck beam, fret spacing calculation and fretboard material are already posted. Neck has Bruce Johnson design DASR trussrod with carbon back strap. Neck beam is 21-piece maple. Body is alder. For...
  18. MPU

    Kubicki d-tuner pics?

    I found some pics of the Kubicki d-tuner lever here on Talkbass last week but can’t find them now when I was going to draw it on Tinkercad for 3d- printing. Anyone know what thread were those pics? It had pics of the lever disassembled.
  19. MPU

    How to calculate fret spacing?

    How do I calculate fret spacing for the D fret when I’m making a 32” scale fretboard by making the 1st fret of 34” scale as the nut? Isn’t the 34” scale ”nut” the fret spacing for D#? How about the D? What’s the distance between D# (34” nut) and D? How do I calculate it? I have a 34” scale...
  20. MPU

    Gluing multi laminate neck beam with epoxy

    I’m making a bass with multi laminated neck. It’s going to be 22 laminates. Yes, you guessed it, Kubicki-inspired. Alex is making drawings for me (thank you for a million times) and I’m planning how to glue the neck beam. I need quite a long open time so I’m going to use West System epoxy. My...
  21. MPU

    Making plastic pickup covers

    Here’s how I make custom pickup covers from plastic. I want to upgrade my NS Design WAV EMG passive pickup to an active one. NS does not sell them (they use active pickups on other models) and the pickup shape is not the usual EMG soapbar.
  22. MPU

    NS Radius CR pickup similar to?

    I’m planning to change the EMG HZ on my NS Radius WAV to something similar to the active EMG that NS Radius CR has. Does anyone have a clue which EMG active pickup would have the most similar sound to CR pickups?
  23. MPU

    Painting chromed bridge black

    I’d like to paint a G&L bridge black. I know paint does not stick to chrome. I can sand or sandblast or chemically remove the chrome off and paint. Has anyone painted chromed parts succesfully? What’s your advice? And no, I’m not looking for discussion whether I should paint the bridge at all or...
  24. MPU

    Badass 1 bridge height

    I’m making a bass with Leo Quan Badass 1 bridge. While the bridge is on it’s way here I’d like to make drawings. Does anyone know the height of the Badass 1?
  25. MPU

    Trying to contact dwizum

    Hi, I’m looking to contact TB member dwizum. He’s not been active around here in over a year. Does anyone know email or other ways of contacting him?
  26. MPU

    Brucebars in existing neck

    I've been planning a set of tests, where I could make soundclips between each step to hear how much difference there is. I'm planning to use a ready made bass as a test mule. I'm planning to put a carbon back strap on the neck, install Brucebars for neck screws and install a Bruceblock under the...
  27. MPU

    Making metal pickup rings

    I’m planning to make Yamaha-esque metal pickup rings for PJ pickups. I’m making them from aluminium or stainless steel. Aluminium is easier to saw, drill and file but does not polish as well. Are there any tricks for either working with stainless or polishing aluminium? I know stainless hardens...
  28. MPU

    What's inside Alembic pickups

    I'm trying to find out detailed data about Alembic pickups, AXY and Fatboy in particular. So far I've found out that they have ceramic magnets, AXY has 6mm wide and Fatboy 12 mm wide aperture which equals magnet or at least magnetic sensing width. They are stacked humbuckers and second coil has...
  29. MPU

    MPU Brown bass

    I’ve always thought that Alembic Stanley Clark bass shape is one of the best looking shapes. Neck heavy, propably yes at least a bit but still I want one. I started with some machining and started to make a brass bridge. I bought 10mm brass rod, 5mmx40mm, 8mmx40mm and 10mmx40mm brass square rod...
  30. MPU

    Woods similar to Koa?

    In my process of Alembicizing my Kawai I came across an idea of backstrapping the headstock. My bass has Koa topped wings. I've had no luck finding Koa veneer in sensible sizes and prices. What other wood would look the most like Koa? I'm looking for five headstock-sized pieces of veneer. Of...
  31. MPU

    Kawai F2B pickup replacement

    I bought a nice piece of 80’s bassiery, a koa topped Kawai F2B. It has active EMG 35 pickups and I got two dead original pickups as well. Luckily EMG’s fit without routing so I can fit original size pickups back. Originals are potted with something black. I’m trying to salvage the original...
  32. MPU

    Kawai F2B pickups

    I’m soon having a Kawai F2B bass that’s missing the original pickups. Anyone know what’s inside the originals? I know they are active so no use measuring DC. Coil configuration, magnet type, anything? I’m going to cast the covers with pu casting resin. I’m hoping to get a dead pickup with the...
  33. MPU

    Twin jazz wiring help

    I'm making a twin jazz pickup out of a set of Dimarzio J. Two split coil J pickups glued together. I'm planning to have single J, P, reverse P and dual J configuration with passive tone. No need for parallel/series switching inside each J. However I have no clue how to wire it. What kind of...
  34. MPU

    Carbon fiber fretless four-stringer

    After playing with my Status-esque fretless I decided to dive deeper in the world of Status. I’m shamelessly taking the shapes and lines of Status Streamline and make my version of it. First I made a plug. I used alder as it’s easy to carve and finish. I brushed two coats of epoxy on the...
  35. MPU

    Fretless HalfStatus

    I have this cherry Status S3000 body and pickups. I need a fretless bass so I thought about using this body as a base.
  36. MPU

    Unusual neck construction help

    I remember seeing and reading about neck construction where a u-shaped slot was routed in the maple neck and slot shaped core made of some lightweight wood was glued in the slot, maybe with carbon fiber cloth. I can’t remember who or where that was, I’m only sure it was somewhere in the net...
  37. MPU

    Thumbing my Vette

    I have a Warwick Corvette full wenge neck and parts I’m going to use to make a Thumb. I started making the body. I routed curved back and top using two router jigs. After some routing and sanding I have this. Next I’m using band saw and oscillating spindle sander to shape the body.
  38. MPU

    Mudbucker covers?

    When surfing local musician for sale- pages I found a Babicz Gibson bridge for sale and the wheel started turning. What about an EB-style bass with cf back strap, DASR truss rod bedded in epoxy, Bruce block under the bridge and custom Dark Star-esque pickups in mudbucker covers. Am I totally out...
  39. MPU

    Winter build off 2022 MPUrker

    Here’s my exhibitionist entry. -Parker Fly-style guitar -flame alder body, alder neck with Richlite fretboard, carbon fiber shell over the back -Parker bridge, Steinberger gearless tuners, possibly Graphtech piezo saddles, possibly Dimarzio pickups instead of the EMGs, Warwick trussrod (SRDA)...
  40. MPU

    In need of help with an ebay seller

    I'm looking for help with an ebay seller. I need a set of 6 black Steinberger gearless tuners for my Parkerish project. Ebay- seller franklinguitarworkstn has them but they are not shipping to Finland, only to US. I'm looking for a middleman who could buy a set and ship it to me. Anyone?