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1978 Musicmaster Bass Project

This is not intended to be a anti-bass-modding lecture...just an observation I had.

I have a P-bass knockoff someone gave me with a dead pickup. I started playing with the rout shape so I could try different pickups in it (from my guitar parts box).

One of the pickups I tried was a dual-rail strat replacement pickup, and it rocked. It still sounded like a P-bass and being a humbucker, it was noise-free. My experiments with that thing have shown that the bulk of the P-bass sound characteristics come from where the pickup is under the strings, along the string length...not the fact that it’s that staggered split design.

Sub-experiments of moving a few different pickups I tried (including a humbucker out of a Les Paul knockoff) toward and away from the bridge in my expanded rout cavity Seemed to make a bigger sonic difference than the actual pickup configuration itself, which really surprised me. I liked it a little less toward the neck, and a lot less toward the bridge. For me at least, the P-bass location is the way to go.

If this seems reasonable to you so far, I see two ways this info could influence your project:

1: Your bass looks killer as is, and the pickguard is already routed for a strat-shaped pickup. Slap a strat sized dual rail humbucker in it from Seymour Duncan, DiMarzio or any of ten zillion less expensive online vendors, and call it a day. No routing, plenty of output, drops right in and is quiet when you stop playing, under a bank of old fluorescent lights with failing ballasts.

2: if what you’re after is specifically the P-bass-est tone you can get from a Music Master, and you’re already committed to routing and the Novak pickup set, make sure you’re aware of the pickup location on a P-bass before you get crazy with the router, or you might be in for a tonal surprise...not necessarily in the direction you intended.

And 3: whatever you decide to do, post pics! Sounds like a potentially very cool project!
 
So what would you do if you weren’t leaving it original? This forum has helped me narrow down lots of things. The only loose end is the bridge

This is a super nice '78, but you already know that and are still committed to modding. That being the case, go for it!!

I've posted pics of my rescued basses before, one of which was a super-sad and badly abused '78 Musicmaster... Already modded, (apparently with a dreamer tool), but the bones were good, as was the aftermarket pickup...

IMG_6608.jpg


Since there was already a "cavern" chiseled out under the guard, (including a battery pocket), I just routed out a "swimming pool" to clean things up and allow different pickups. I have another guard with a Novak BS/DS setup and can switch in a few minutes... I can also throw a stock guard with a "correct" replacement pickup and no one would ever know just by looking!

For simplicity sake, you just might want to explore some of the drop-in after market pickups from Aero, Novak, or Sentell... they are really great, not at all weak or shy and come in a lot of different flavors you might find likeable! If you've already got a sound in your head that you want out of this bass, then dive in and do the best work you can!! After all, it is your bass :D Sounds like a fun project!

-robert
 

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I was looking for a short scale bass and came across a 1978 musicmaster in a pawn shop. It is in need of some love so I decided that I would do some modifications and make it my own. I talked with Novak pickups and they are going to make me a custom P bass pickup set up for the more narrow string spacing. To add this pickup I am going to have to route the body out. I have also ordered a 920D custom PB upgraded replacement wiring harness. My plans are to change out the pickguard and make one that looks more like the Mustang with the metal control cover, but still using the MM pickguard shape.

When i was deciding what bass to get I also ordered a new American Mustang Bass. I played both side by side and decided that the MM had a better feel. Needless to say the Mustang ended up getting returned.

My questions are:
What is the best bridge? Ideally one that would use the same mounting holes, but I doubt there is one out there. Hipshot had one years ago but is no longer being made. If i can't get an exact match on holes then I want the one with the best sound, preferably one that covers the factory holes so it has a clean look.

Has anyone done this much mod work personally to a MM?

Does anyone know where I can find La Bella 0760M-S original 1954 style stainless steel flat wound strings 0.052, 0.073, 0.095, 0.110?

that strat pickup in there is one of the defining characteristics of the bass! You’ll miss it! I’d keep it in! It’s a gorgeous sounding bass as it is. Before you take out the pickups I’d recommend sitting with it and messing with the height of the pickups first, you can get warmth and roundness out of that set of pickups, they’re not thin sounding; that’s just people projecting what they think a guitar pickup in a bass is gonna do psychologically.

That bass has a 6 pole guitar pickup. It has an e that sits over the pole. An a and a d that sits between the poles and a g that sits over the pole, so the e and the g have more sustain and the d and the a have less sustain. Nothing sounds like a musicmaster, and they sound better than mustangs and p basses, but you’re gonna have to move that pickup to find that out, if it’s backed all the way away from the strings it’s gonna sound thinner.
I say this cause the p cavity will destroy the possibility of going back

that bass has had that pickup for more than 40 years, maybe try to find a mustang body and use the neck from this one. Or find a squire bronco

Edit: oh yeah if the electronics are toast maybe do whatever but also maybe get a strat pickup for it, I would still not rout for a new pickup, that’s a lot of the character of that bass, is how wrong it is and yet it’s the only fender bass that I like the sound of lol
 
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I never plan on selling it so I’m not concerned about resale. The electronics are toast, so I’m replacing the guts. Since I’m doing that it makes sense to replace the pickup. My favorite sound is from a P Bass pickup so that’s what I’m going to go with.

I also bought a new American Mustang in hopes that the pickup tone would be similar, but it’s not. So that is going to be returned. For the same money I decided to get this pawn shop MM and totally pimp it out to my specs. I’m 50 and having a project is a good thing.

It has a great feel in my hands so I’m going to leave most of it as is. I love the patina and the character of the wood with age.
I used to have one of these, they really are nice little basses. I would probably leave it mostly alone as they are getting harder to find now, and if I were changing things I'd keep it so it could be returned to stock configuration easily.

You could try a dual rail type Strat mini humbucker pickup, I have one here I've been playing with and the results are promising. I'd probably switch the bridge out for a Fender vintage hi-mass which has the threaded rod type saddles that allow you to adjust string spacing and I think it will fit the MM screw pattern too.
 
The thing with a Musicmaster bridge (original) is that they're a pain in the butt :). Beyond the intonation difficulties (it's rare to see that two saddle style for a reason), it also has the design flaw of too short a space between the string anchor point and the saddle, particularly for the bass E string - so the string end windings go on top of the saddle. I got around this by first running the string through a couple of machine screw nuts of a similar size, to serve as spacers in order to have the string sit right. So okay, it can be dealt with, but it's not a great feature. This is on a late 70's model, some others may vary. On the Squier bridge, this problem has been addressed, it's slightly longer. The Hipshot replacement bridge also addresses this issue (as well as intonation), so it's a considerable improvement ... if you can find one.
 
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that strat pickup in there is one of the defining characteristics of the bass! You’ll miss it! I’d keep it in! It’s a gorgeous sounding bass as it is. Before you take out the pickups I’d recommend sitting with it and messing with the height of the pickups first, you can get warmth and roundness out of that set of pickups, they’re not thin sounding; that’s just people projecting what they think a guitar pickup in a bass is gonna do psychologically.

That bass has a 6 pole guitar pickup. It has an e that sits over the pole. An a and a d that sits between the poles and a g that sits over the pole, so the e and the g have more sustain and the d and the a have less sustain. Nothing sounds like a musicmaster, and they sound better than mustangs and p basses, but you’re gonna have to move that pickup to find that out, if it’s backed all the way away from the strings it’s gonna sound thinner.
I say this cause the p cavity will destroy the possibility of going back

that bass has had that pickup for more than 40 years, maybe try to find a mustang body and use the neck from this one. Or find a squire bronco

Edit: oh yeah if the electronics are toast maybe do whatever but also maybe get a strat pickup for it, I would still not rout for a new pickup, that’s a lot of the character of that bass, is how wrong it is and yet it’s the only fender bass that I like the sound of lol

here here. i also use my MM bass with original pickup. Only change i made was removed the extra cap. There are 2 capacitors, whereas the standard fender Jazz/Precision wiring is one cap. that additional cap is what negatively affects tone IMO. remove that and the pickup is great.
 
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The thing with a Musicmaster bridge (original) is that they're a pain in the butt :). Beyond the intonation difficulties (it's rare to see that two saddle style for a reason), it also has the design flaw of too short a space between the string anchor point and the saddle, particularly for the bass E string - so the string end windings go on top of the saddle. I got around this by first running the string through a couple of machine screw nuts of a similar size, to serve as spacers in order to have the string sit right. So okay, it can be dealt with, but it's not a great feature. This is on a late 70's model, some others may vary. On the Squier bridge, this problem has been addressed, it's slightly longer. The Hipshot replacement bridge also addresses this issue (as well as intonation), so it's a considerable improvement ... if you can find one.

I ended up ordering a black hipshot direct replacement. It’s light years better than what’s on there now. I also decided to get all the original hardware checked out and tuned up. My plan is to have the original set as a back up or if I just want to change my tone. I’ll just swap pickguards that are completely set up so it’s just plug and play. I saw that another member here does that, thanks for the great idea.

I ended up taking her apart today and was surprised how good it all looked. Everything is on order now, just waiting for it to arrive to start the rebuild
 

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I ended up ordering a black hipshot direct replacement. It’s light years better than what’s on there now. I also decided to get all the original hardware checked out and tuned up. My plan is to have the original set as a back up or if I just want to change my tone. I’ll just swap pickguards that are completely set up so it’s just plug and play. I saw that another member here does that, thanks for the great idea.

I ended up taking her apart today and was surprised how good it all looked. Everything is on order now, just waiting for it to arrive to start the rebuild
I didn’t think anyone made a direct replacement bridge. Can you share the link?
 
I didn’t think anyone made a direct replacement bridge. Can you share the link?

Here are the two that I found in stock at fretnation. I went with the one with the chrome saddles. I was wanting all chrome but this will do for now.
 

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This is a super nice '78, but you already know that and are still committed to modding. That being the case, go for it!!

I've posted pics of my rescued basses before, one of which was a super-sad and badly abused '78 Musicmaster... Already modded, (apparently with a dreamer tool), but the bones were good, as was the aftermarket pickup...

View attachment 4547471

Since there was already a "cavern" chiseled out under the guard, (including a battery pocket), I just routed out a "swimming pool" to clean things up and allow different pickups. I have another guard with a Novak BS/DS setup and can switch in a few minutes... I can also throw a stock guard with a "correct" replacement pickup and no one would ever know just by looking!

For simplicity sake, you just might want to explore some of the drop-in after market pickups from Aero, Novak, or Sentell... they are really great, not at all weak or shy and come in a lot of different flavors you might find likeable! If you've already got a sound in your head that you want out of this bass, then dive in and do the best work you can!! After all, it is your bass :D Sounds like a fun project!

-robert

thanks for the idea to have pickguards fully set up for easy swap out. I’m going to do the same. My plan is to take the original parts to a tech and get them straightened out. I’ll set all of that up on the original pickguard. I have a tortoise pickguard on order that I will put the new pickups and new control panel.

I still want to use split PB pickups on the new set up. Depending oh how all of this goes I may set up a 3rd pickguard with something else. Right now my focus is getting the old stuff sounding as good as possible and building my first set up.
 
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thanks for the idea to have pickguards fully set up for easy swap out. I’m going to do the same. My plan is to take the original parts to a tech and get them straightened out. I’ll set all of that up on the original pickguard. I have a tortoise pickguard on order that I will put the new pickups and new control panel.

I still want to use split PB pickups on the new set up. Depending oh how all of this goes I may set up a 3rd pickguard with something else. Right now my focus is getting the old stuff sounding as good as possible and building my first set up.

If you do go with separate pickguard, do yourself a favor and use some sort of quick-connect for the bridge ground-wire... Makes change out a breeze!!

IMG_6703.jpg


-robert