Tag Archives: vibrato

The Squier Vintage Modified Bass VI: a 100% Pun-Free Upgrade Guide


My Squier VI lounging with Paul Frank’s amazing Custom Shop model, strung with Gabriel Tenorio strings

While Fender’s Jazzmaster and Jaguar seem more popular than ever, the Bass VI still seems mysterious, or at the very least, under-appreciated. Players seem confused by its mere presence in the catalog: Is it a bass? Is it a guitar? Is it a baritone?

Let’s clear up the confusion right now: The Bass VI is a bass guitar in the strictest sense. Tuned E to E a full octave lower than a standard guitar, the VI is an incredibly versatile instrument that’s as well-suited for familiar chord shapes as it is for punchy bass lines.

Right now, the easiest way to get into a VI is the Squier Vintage Modified model. Fundamentally a great instrument, the Squier VI ticks all of the right boxes for me: it has Jaguar-style pickups and the all-important fourth Bass Cut switch, it’s affordable, and it’s damn fun to play. We’re still talking about an import model, so if you pick one up and find it lacking, I’m here to provide a handy upgrade guide to the “ba-VI” of “VI-sessfully” upping your Squier’s “VI appeal” into a machine for making “mu-VI.” (My deepest apologies for how poorly those puns worked.)

The first mod I’m going to suggest can hardly be called a mod at all, but believe you me, it’s crucial.


Far and away, the most common complaint with current Bass VI models is that the low E string lacks tension. You’ll hear it described as “floppy” or “sloppy,” and those adjectives sum it up nicely. It feels unbalanced and just can’t stand up to aggressive picking.

The problem with your Bass VI’s low E is thanks to a too-light gauge of string. When Fender released the Bass VI in 1961, the standard set was made up of strings gauged .026”-.095”, and that .095” is key here. At some point in the recent past, the low E string changed to .084” which is woefully under-built for the task. A .095” E is going to feel taut, stable, and will gleefully accept heavy attack, whereas the lighter string ends up feeling, well, just as described in the paragraph above.

In my view, the most essential mod you can perform on your VI is installing a heavier, more balanced string set. Even without upgrading the bridge or swapping pickups, this very simple and easily overlooked tweak can tighten up the whole instrument and bring back the low end that’s so sorely missing with the stock strings.

Because this information doesn’t seem to be collected anywhere, here’s a handy shortlist of string makers that offer a good set of VI strings with adequately heavy E string, which I’ll update as I stumble upon them. The only set Fender currently offers is gauged .024″-.084″, sadly.

La Bella (Flats and Rounds)
Kalium (Rounds, tons of options)
Gabriel Tenorio String Company (Rounds and Gabriel’s new Ground Wounds)

Or, if you want a genuine set from the 1960s


A '62 Bass VI that I recently fell in love with at the Fretboard Journal Summit, courtesy of Gryphon Stringed Instruments

An original ’62 Bass VI that I recently fell in love with at the Fretboard Journal Summit, courtesy of Gryphon Stringed Instruments

If you ever have a chance to inspect a vintage Bass VI, you’ll notice that the original bridge is much wider than the one found on most reissues, which is just a standard offset bridge slapped on likely due to the costs of tooling-up for such a niche item. That original 1” width is a big part of the Bass VI functionality puzzle, which translates to more flexibility when it comes to intonation. Original examples have nearly twice the saddle travel as the current part, and with the Bass VI’s 30” scale, every little bit is precious.

The stock Squier VI bridge

The stock Squier VI bridge

The bridge found on the Squier Bass VI is essentially the same as the other VM offsets, save for the adjustable Mustang-style saddles, which have deep grooves and the ability to set the radius of the strings to match the fretboard. It does, however, have a propensity to rattle around so much that even correct offset setup techniques may not quell it. (See my Demystifying series for more info)

What to do? Track down an original bridge from the 1960s or 1970s? Nah, Staytrem’s got you covered with their fantastic and appropriately wide Bass VI bridge. If you’re looking for a stable bridge that’ll intonate for sure, this is the way to go. I have a Mastery on my personal Squier, and while it does intonate perfectly for me, your mileage may vary depending on string gauge and type as well as setup.


img_8743As I mentioned in my recent article on the J.Mascis model, if you’re planning on using the vibrato you really should upgrade this part. Import vibratos are made of inferior metals and often have manufacturing flaws that render them less stable than their US-made counterparts.

A great solution here is obtaining a Fender AVRI/AV65 vibrato, especially if you’re on a budget. I’ve chosen the Mastery Vibrato for my own specifically because of the heavy-duty spring Mastery uses, which replicates the sturdier feel of early 1960s units and really stands up to the extra tension of those thick strings.



As you might expect, the nut work on these instruments is passable, but not great. The soft plastic used wears easily, and the slots are often too tight even for the string gauge used at the factory. I’ve also seen a number of them with poor string spacing, but hey, I don’t expect perfection on a sub-$500 instrument.

I highly recommend having the nut replaced by a competent tech in the material of your choice; my preference is bone. And for those of you that use the vibrato, a properly-cut nut is your best defense against tuning issues.


The electronics in the Squier Vintage Modified series are, understandably, on the cheap side of things. I’ve seen and heard of a number of VMs that had wiring issues or faulty parts right out of the box, so if you’re going to be using this instrument heavily I would insist that you have the instrument rewired with higher quality pots, switches, capacitors, and even replace the jack while you’re at it. Not only will you end up with an instrument you can really trust, you’ll also have better sound as a result.

Look to CTS, Bourns, or my good friends at Emerson Custom for pots, Switchcraft for the jack and switches, and any number of options exist for capacitors. Most of these parts can be found via AllParts or Angela.

Note: US parts will require enlarged holes on the volume-tone control plate.


While I confess that you can get by with the Squier in its stock configuration, let’s be honest: there are better pickups out there. They’re a little trebly, a bit noisy, and too weak on output to keep up with other basses. It’s well worth your time to explore the myriad pickup options that exist in today’s market, but where to start?

Star Trek stickers optional, of course

Star Trek stickers optional, of course

In my mind, Curtis Novak has his finger firmly on the pulse of offset guitars’ unique capabilities, and he’s the first person I bring up when a customer has a specific sound in their head. From traditional sounds to obscure designs stuffed into familiar covers, Curtis excels at wringing every last drop of tone from your instrument.

For Bass VI, he offers both the early ’61-’62 Jack Bruce-style pickups and the Jaguar-style pickups that came as standard on the model from 1962 onward. However, if you’re looking for something different, I’m sure Curtis could wind up a trio of his Jaguar-sized Lipsticks, some unique Gold Foils, or even something humbucking if you’re that kind.

Another good option would be the fantastic pickups made by our friend Jaime of At The Creamery. He offers a VI set with much higher output than the stock pickups, and with custom options if desired. Jaime does exceptional work!

On my personal VI, I started out by building a set out of three Fender AV65 Jaguar pickups, which I really like. They’re affordable and great-sounding pickups for the price, but ultimately, a little too bright for my tastes. If you need a good Tic-Tac sound, this would be a great way to go. If you create a set out of three separate pickups, do pay attention to output in each position as well as polarity to make sure they all play well together.

Currently, my VI is loaded with a set wound by our good friends a Lollar Pickups, which have a bump in midrange and output, and they really keep up with my other instruments no matter the setting. Plenty of bass on tap and clarity through any amp. I’m a huge fan of Lollar Pickups.


Prepare to be amazed: there’s no good reason to toss these. The Kluson-style tuners you find stock on the Squier VI are great. On the many examples I’ve had across my bench, I have never found them to be problematic. Keep them.


When Squier introduced their take on the VI, I was immediately excited. At the time, the VI wasn’t an instrument I was keen to spend a lot of money on, simply because I didn’t think I’d be using it heavily. Squier made that sound accessible and did so with a lot of bang for the buck. When you mod this instrument, it isn’t so much a lipstick-on-a-pig scenario, you’re genuinely taking a good instrument and making it better.

My VI and '73 Precision, just after we got back from tour.

My VI and ’73 Precision, just after we got back from tour.

To that point, I recently joined my good friends Vanessa and Sarah, a duo better known as Leo Leo. The LA-based contemplative rock-pop outfit plays complex, beautiful music that’s as energetic as it is challenging; they are one of my favorite bands. When they asked me to tour with them on bass, I have to admit that I was overjoyed and overwhelmed, especially with just a week to learn ten songs. It was a lot of work, but I’m so proud of the noise we made together at those shows.

At the center of my bass sound: my trusty Squier VI. I plugged into a borrowed Salvage Custom board (thank you, Gabriel!) populated with pedal necessities run through a mini SVT. Night after night, that thing performed beautifully and never let me down. Even as we rehearsed, it became clear that the VI was the sound. It proved to be such a bruiser that next time, I may leave my ’73 Precision Bass at home.

Each time I took it out of its case, I was immediately greeted with questions from perplexed onlookers that wondered about my weird bass. I showed it off proudly and handed it over to person after person, none of whom could believe what they were playing was a lowly Squier. There was only one occasion before a show where a churlish bassist chided me for playing––and I quote––a “piece of shit.”

I’m happy to say that I proved him wrong that night. I’m proud to play my Squier.

Here's how that Squier looked the day I recieved it. (Thanks, Nate!)

Here’s how that Squier looked the day I recieved it. (Thanks, Nate!) See below for a post-mod comparison.

This one's getting a TON of use in the @leoleoband set for the tour that starts—holy shit—tomorrow. Now, the weight of this Squier Bass VI never bothered me until we started this hours-long rehearsal process, but at the end of the night my back is screaming at me for relief. I think it may be time to look into a real '60s VI refin or something, that is of course assuming that the band wants to keep me! 😁 I also wish it were brightly-colored, but eh, such is life. Upgrades: -Lollar pickups -Fenderparts mint guard -Mastery Bridge + Vibrato (thanks Woody!) -upgraded wiring -La Bella Deep Talkin' Flats -Matching headstock #guitar #bass #bassvi #leoleo #tour #masatour #makeamericashakeagain #squier #fender #offsetguitars #lollarpickups #masterybridge #fenderparts

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Upgrading a Squier J. Mascis Jazzmaster

FullSizeRender_1As you can imagine, I get asked about mods all the time. Recently, my new friend Brent brought his Squier J. Mascis model to me to hear my impressions of it and the many potential upgrades he was looking to have done. As-is, the JMJM is such a good guitar that many players don’t see the need for new pickups or hardware, but given the cheap price he paid and his needs, it totally made sense to do the work.

As I said before, the JMJM is a pretty cool guitar for the money. The neck feels great in your hand, the stock pickups are alright, and it has all of the right electronic appointments a Jazzmaster should have. Still, there’s room for improvement. Let’s jump in, shall we?

Tuners: Actually, these are good enough that I don’t see the need for a swap. As long as know how to string a slotted post correctly (string goes in the hole, 3-5 wraps) they work just fine. Great, actually. Even on my Squier VI!

Pickups: The stock units are pretty decent, but they are indeed P90s instead of Jazzmaster pickups, with big bar magnets and adjustable poles, with a tall coil that’s wound hot. If you want a real Jazzmaster sound, you’re not going to get it from those. Plus, as far as P90s go, I just feel there are better ones out there. I recommend a swap.

Electronics: On this particular instrument, I didn’t totally rewire the guitar. Generally, the one area where the current Squier builds fall short is the dependability of the electronics, which often develop shorts due to sloppy wiring or inferior parts. Instead, I went through and checked every wire and re-flowed some particularly bad connections. I do, however, recommend gutting the electronics and starting fresh with better components.

AOM/TOM Bridge: If you’re familiar with us, you’ll know that the AOM/TOM is the bridge we least recommend for offset guitars, both for sound and setup. Adjust-O-Matic/Tune-O-Matic bridges generally aren’t the correct radius for the most common Fender necks (7.25” and 9.5”) and even with heavy re-slotting of the saddles, it’s not always possible to totally correct that. As a result, the E strings will always feel more stiff than the others.

Additionally, even these bridges don’t always address the most common complaints with the original style bridges: buzzing and stability. This bridge already had some pretty nasty buzzing going on, which was mostly cured by re-seating the saddles. A shallow slot on the low E saddle meant that string impulsively jumped out with heavy picking as well. 

I recommend a change here, but obviously, your mileage will vary.

A Mastery bridge is almost always my first pick here, which does indeed require pulling the old AOM/TOM inserts, filling the holes, then re-drilling. Staytrem also makes a drop-in thimble replacement for these, so do keep that in mind if you’re looking for something less, well, surgical. They also used to make a drop-in replacement, but I can’t seem to find it on their site. I may be interneting improperly.

The Vibrato: I won’t totally rehash my arguments from our prior blog post on the quality issues of import vibrato units, but suffice it to say, if you’re a heavy trem user––hell, even a pedestrian––you should consider an upgrade here. Tuning stability is key, and the sloppy fit of the internals on these can be a nightmare.

In this case, we went with an American Vintage Reissue trem from eBay user trickedoutguitar, which came with the correct AVRI arm with the ever-so-lovely, gentle bend. Mastery also makes a delightful trem of their own, which I recommend highly for truly intense users.

IMG_8439So, when we finished our assessment meeting, I made my list of recommendations known. With Duncan Antiquity Is, a Mastery M1 kit, and an AVRI trem, I felt we’d pretty much covered everything. Obviously, the Mastery and pickups can be a significant investment for such an affordable guitar, but Brent wanted a guitar that would meet his needs without having to think about it ever again. Good call, says I.

After doing all of that and a proper setup by Yours Truly, I really believe we made a good instrument great. The difference in tone, unplugged and amplified, was immediately apparent. Whereas the guitar sounded pretty good plugged-in but was rather dead acoustically, the superior fit of the Mastery bridge and thimbles really made the thing come alive. And the trem? Smooth and immediate, and of course, stable as hell.

When I’m asked about my favorite Jazzmaster pickups, I always recommend Lollar, Novak, and Duncan Antiquity Is, the latter of which I feel does an excellent job of approximating the sound and response a 60+ year old black-bobbin pickup. In the case of this JMJM, we ended up with a brand new guitar, the sound of which belied its youth. Really a stunning pickup set. It has so much of the warmth and midrange complexity that’s associated with the best old pickups, woody and natural as can be.


Brent’s finished Squier J. Mascis pictured with Artoo and Pancake

We came so close to that sound that I decided to do a comparison video of the J.Mascis  Squier up against my 1961 Jazzmaster “Pancake”, which is the greatest guitar I’ve ever played. This was all rather last minute and I didn’t yet have a proper microphone, but the iPhone did a good job showing some of the more overt differences between them. I even threw in “Artoo”, my 2007 Thin Skin with Lollars for fun. Check the video below!

In the end, Brent was absolutely blown away by his guitar, and so was I.

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Boutique Builders and the Offset Vibrato: A Trem of Great Import


I spend the bulk of my professional life thinking about offset guitars, from the next way in which I’ll be able to explain solutions to the myriad perceived bridge issues, to my idea of the perfect Jaguar, to mods and possible set up techniques I’d like to explore on one of my own. These guitars have been a huge part of my career, and I’m happy to say that recently I’ve discovered that I have a nickname among some enthusiasts: “The Jazzmaster Guy”.

Yes, dear reader, you likely know already how obsessed I am with these models, and in the same way that some proudly identify with a political party or religion, I wear my love of these quirky guitars as a badge of honor. If elections were held to determine the supreme guitar ruler of the world, I would firmly be in the Offset Party. I would totally rock a “Jazzmaster 2016” or “Jaguar 2016” bumper sticker. In fact, that might be worth putting some effort into.

Recently Summer NAMM took over the Music City Center in Nashville as well as our Facebook, Twitter, and Instagram feeds. Gear lovers had a lot to look forward to, with new offerings from boutique and indie guitar, pedal, and amp makers as well as updated models from the big boys, and even if you weren’t able to attend in person (like me) there were plenty of goodies showing up online to satisfy even the most stodgy of enthusiasts. Among said goodies were plenty of models in the offset tradition, which is something that should have elicited more excitement in me than I actually felt.

It’s true: everyone makes an offset guitar these days, and how could we begrudge them that? These guitars have never been more popular, what with the spate of indie bands, aftermarket parts like the Mastery Bridge, and Nels Cline’s mind-altering musicianship, new Jazzmaster and Jaguar models (as well as variations on the theme!) are flooding the market at rates never before seen or anticipated. What was once a bargain-barrel, “crappy” guitar is now every bit as coveted and hallowed as some of the other most successful and idolized guitar models out there.

But with all of the complaints levied against these models (all of which we disputed and dispelled in our Demystifying series) one would expect that new offerings would perhaps understand not only the setup techniques involved in making these guitars play as Leo Fender intended, but also the very real affect of sub-par parts on the tone and functionality of these amazing, misunderstood instruments.

And that’s what concerns me about these upmarket models and fresh takes on famous designs, that there appears to be a disturbing trend in the “boutique” guitar market far more pervasive than relic finishes, self-tuning guitars, and ultra-hot gimmicky pickups:

$2000 guitars with cheap import hardware.

Offset Apart


My favorite iteration of the offset vibrato: the Pat Pend unit found on my ’61 Jazzmaster.

Many builders these days have homed in on the hot, hot, hot market share the offset body design has carved out for itself. Never more popular or readily available, the Jazzmaster and Jaguar-like body designs invading stores and internet forums alike are often as enticing as they are expensive. Offsets are being turned out in huge numbers these days, and so even small builders are looking to remain competitive in this not-so-niche market, and in order to stay that way, some builders are quietly installing inexpensive hardware on their guitars. And because we’re seeing this practice so often, these expensive custom guitars don’t perform nearly as well American reissues offered by the big company with the F-logo. I find that to be inexcusable, and too often, guitar makers are ignoring what I would argue is the most important piece of hardware on the guitar in terms of tuning stability: the offset vibrato tailpiece.

If you’ve read our Demystifying series, then you know that, when properly set up, Leo Fender’s offset vibrato design works flawlessly. Seriously, take a moment to read those articles, then come back to this one with your mind blown, and thus, more open. The offset vibrato is so popular right now for a reason, and that reason is, it’s stable as hell. When well-maintained, I can do more and get more out of the offset vibrato than I can with just about any other unit on the market, and although it may not ‘dive bomb’ the way a Floyd Rose does, how many non-locking trems do you know of where you can depress the bar the whole way, strings flopping about, then release and have it come straight back into tune? 

(For the record, I also love Gibson’s equally maligned Lyre Vibrola, Bigsbys, Rickenbacker’s Accent, and the tailpieces found on old Silvertone guitars. Sorry for answering my own question.)

But hold on a sec, the above statements come with a disclaimer: I’m only referring to vintage and US reissue tremolo units. There is no import part on the market that works as intended.


From Allparts.com

I’m quite honestly shocked at the number of high end offset guitars at SNAMM  equipped with the unbranded offset vibrato, a unit that can be easily obtained from many parts suppliers yet is never worth even its modest cost. The reasons I’m so down on the ubiquitous, no-name import trem unit is that the parts are made from pot metal, poorly machined, and are generally bulkier in design. They also happen to have arms with the least graceful bend imaginable, something that I’d contend is as much a part of the feel of the trem as the spring.

See, not only are there issues with arms spinning freely, collets breaking and never quite locking-in properly on those units, they also just don’t stay in tune as well as those made in the America. Parts that don’t fit properly together mean that the unit won’t return to pitch or “zero out” perfectly. They feel cheap, and comparing one of these import trems with the real thing, one can plainly see the stark difference in quality between them.

Recently, my pal Jessica Dobson of Deep Sea Diver brought in a new guitar for a setup and to install new pickups, and as part of a setup, I always ensure that the trem unit functions smoothly and accurately. In the case of this instrument and many like it, the vibrato wouldn’t return to pitch even when properly set up. I removed and dismantled the unit, and saw something that I’d seen many times before.

IMG_2590In viewing this photo from my Instagram feed, you should be able to see that the pivot plate on this Asian-import trem is sloppily manufactured, and it’s not just this particular one! Every single one of these I’ve ever worked on is malformed in some way, leaving the hope of tuning stability a pipe dream at best. Now, this can be corrected to some extent by doing as I did here, grinding away the excess material until the plate was left with sharp edges and equally smooth contact points. And while this does ensure that the trem works much, much better than it did, weak springs and inferior materials will continue to cause issues much farther down the road.

Another mark against the import unit: bad metal sounds bad.

A Call to Trem Arms

If you’re a guitar maker offering a Jazzmaster-type model (or any model with that particular bridge and tailpiece combo) then I completely understand that you can’t just put a Fender-branded part on your guitar. In that regard, the no-name, unbranded import vibrato seems like a good alternative, and one that’s easy to relic to hell and back, if that’s your bag. The thing is, because they’re so poorly-made, you may be offering a guitar with a flaw right out of the gate. But there is hope!

One option would be purchasing the U.S.-made ‘real thing’ and replacing the face plate. Companies like Faction Electric Guitars offer stainless steel plates (designed by our pal Paul Rhoney) that would suit this purpose well. Sure, that’s an added expense, but if you’re already charging $1800-$2500 for a guitar, well, it’s a worth while one.

An even better option? Investing in the Mastery Vibrato, a unit that’s free of ties to the California manufacturer with the familiar name that works perfectly and is perhaps the closest in feel and tonality to the units found on vintage offset guitars, and as many of us offset aficionado will tell you, they’re the cream of the crop. Woody designed this piece as an upgrade to the original, with the a new carbon steel spring meant to feel and perform as the originals, low-profile screws that won’t chew through your strings, and a pivot plate that runs the entire length of the string anchor plate. Sturdy, solidly-built, and tonally brilliant, this all adds up to the perfect vibrato for your equally well-made and attractive instruments.

If you’re building your own guitar from parts and you don’t have the coin to drop on upgraded or vintage units, you can find Fender AVRI trems in the $50-60 range, and you can even find ‘aged’ ones on eBay. The no-name unit goes for $35 over at Allparts but don’t say I didn’t warn you. Unfortunately, at this time the  import unit is the only option for those in need of gold hardware.

Now, the purpose of this article isn’t to call out any specific builders out there, so I’m not going to include the names of guitar makers that use the dreaded “no-name” vibrato. Instead, here’s a list of some of my favorite builders that, instead of attaching subpar parts to their instruments, go the extra mile and dollar to install the precision-machined Mastery Vibrato. These are builders that care about quality that you can buy from and know that your instrument will perform as promised every single time.

In alphabetical order:

Echo Park

That’s all I could think of right now, but I’ll be sure to update this post once my other guitar-building friends read this and yell at me for forgetting them. I’ll deserve that much at least, I’m sure.

Anyway, this one’s the only unbranded trem I’ve ever liked, found on Freddie Tavares’ prototype ’58 Jazzmaster in Desert Sand with a huge maple Stratocaster neck and a sweet black anodized guard. Special thanks to Mark Agnesi of Norman’s Rare Guitars for letting me have an unforgettable hour with this thing. What. A. Guitar. Expect a short article about that hour in the future!


If I only had $100K.

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Demystifying the Fender Jazzmaster and Jaguar, Pt. 2: Bridge Over Troubled Vibrato

IMG_2101By Michael James Adams

A few weeks back, we took some time to fully explain the electronic innerworkings of Fender’s paradoxically well-loved and oft-maligned models, the Jazzmaster and Jaguar. For many players, the tonal options available on these guitars is a breath of fresh air; for others, the switching becomes an exercise in futility, leaving them to wonder how to just turn on the bridge pickup. Hopefully we helped!

In today’s column, we’re going to dive into what be the most misunderstood and subsequently damning design element on these amazing guitars: the bridge.

It’s a common occurrence for players who are used to Strats and Teles or Les Pauls to get the Offset itch and pick up a Jazzmaster or Jaguar and find that it doesn’t play quite the way they expected: strings will slip out of their grooves with moderate pick attack, the bridge sways back and forth with vibrato action, and sympathetic ‘ghost’ notes will ring out from behind the bridge, prompting many stymied players to install a Buzzstop. Please, don’t do that just yet – I’m begging you to get to know your seemingly unwieldy friend before you do something rash.

Shim Shenanigans

Conventional guitar wisdom tells us that shims are bad. They’re tone-sucking, sustain-killing, useless pieces of paper that shouldn’t come anywhere near a neck pocket, right? Well, about that…

That's A Bruce Campbell, not THE Bruce Campbell. Unfortunately.

That’s A Bruce Campbell, not THE Bruce Campbell. Unfortunately.

Most of the vintage Fender guitars we love came from the factory with at least one shim installed, and I’ve seen vintage guitars with four or more original shims! Telecasters, for example, might have a shim in the front edge of the neck pocket so that when the guitar is strung, the strings sit closer to the top of the ashtray bridge instead of down in the middle, which isn’t exactly the most comfortable place for picking. Also, the height adjustment screws on the brass bridge saddles could be longer than necessary, which means sharp pieces of metal digging into your picking hand. Not fun.

Many players operate under the belief that a shim will kill their tone, and to an extent they have a point. Obviously, for maximum sustain and tonal transfer, it makes sense to have a tight neck pocket with full wood-on-wood contact. Here’s the thing: tone is subjective, and the vast majority of us won’t be able to hear the difference between a shimmed and un-shimmed guitar. Add to that the fact that many of the old-school tones we’re all chasing were created with shimmed guitars, and the argument gets even more murky. And, unlike Strats and Teles, Jazzmasters and Jaguars were actually designed with shims in mind!

Break Angle Benefits

You see, Leo Fender knew that his floating bridge design needed a certain amount of downward force to work properly, so he used shims in the leading edge of the neck pocket to adjust the angle of the neck, causing the strings to pass over the bridge at a sharper angle. This is called the break angle.

The further back he tilted the neck, the bridge would have to be set higher to achieve playable action, and thus, more downward force on the bridge. More downward force on the bridge also means greater tonal transfer via the contact between the bridge and its thimbles, which in turn transfer that vibration to the body, and then who the hell really knows how much sustain and resonance you’re losing or gaining?! It boggles the mind.

When players complain about their strings slipping out of the tiny grooves on their saddles, more often than not the problem isn’t the saddle, it’s the aforementioned break angle.  A sharper break angle means more downward force on the bridge, which in turn helps to keep the strings seated! One other solution is to deepen the grooves with a file, which is a fine solution that I’ve had to use a few times. It’s not my first choice fix, but with some guitars with worn or import bridges, there’s not much else you can do, short of replacing the bridge. More on that later.

Players will also cite excessive mechanical buzz from their bridges as a source of frustration, but again, I point to neck/break angle as the first solution. Most of the time, the bridge buzzes because of a weak break angle and thus, less pressure, which means the saddles themselves aren’t tightly seated on the bridge plate. Tilt that neck back and voila, the buzz disappears. At least, it usually does; new bridges that haven’t been played-in will often make noise because they don’t have years of oxidation helping to tighten things up. In that case, either sweat a lot or dab some blue Loc-Tite* on the saddle screws, which will not only diminish rattle but also ensure that screws don’t turn when you don’t want them to.

The other solution to this problem is the Buzz-Stop, an add-on unit that screws into the trem plate and forces the strings down toward the body. While this solution certainly works, it also kills the vibe of having a Jazzmaster or Jaguar; the strings behind the bridge are deadened – a huge part of what makes these guitars  so fun! – and the vibrato has another point of friction to contend with, making it work less efficiently. It also makes the guitar feel different in terms of playability, but feel is subjective.IMG_4061

Rock. YEAH. Ing. YEAH. Bridge. YEAH. YEAH. YEAH!

For the Jazzmaster, Leo Fender designed a new “floating” vibrato system which revolved around a bridge that rocks back and forth as the whammy bar is actuated and promised unparalleled control and flutter as well as better tuning stability. But if this system was supposed to be so great, why does it seem like everyone complains about it?

A lot of people don’t understand that the bridge is supposed to rock, which understandably freaks them out. I’ll admit that this feature isn’t my favorite element of the design, but it really does work, but not perfectly. The bridge doesn’t always return to its zero position, but this is a problem just about every trem system on the market has, and if we lived in a perfect world it would be enough.

If the rocking bridge bothers you and makes your intonation spotty, a lot of us will wrap the bridge with foil tape, which locks it into place in its thimbles. The vibrato still works well like this, but again, it’s not a total solution. This is yet another issue addressed by the Mastery Bridge, with its larger diameter posts that fit snugly into the bridge thimbles.

A Word About String Gauge

When Leo was rolled out the Jazzmaster, he intended to market the guitar to Jazz players, hence the addition of the darker preset rhythm circuit. Because of this, the guitar was also designed with heavy-gauge flat-wound strings in mind. Back in the day, light guitar strings weren’t readily available, especially when it came to flats. That’s why you so often hear older guitarists talking about using a banjo string on the high E and moving the rest of the set over one string! Jazz players were often using sets as heavy as .014”, and .011” sets were considered pretty measly by comparison.

When the Jazzmaster rolled out, the idea was that these jazzers would be using at least .012” flat sets on the guitar, which have much more tension than today’s slinkier round-wound strings. Heavier strings equals greater tension, get it? If you ever try to put flat-wound 12s on a Jazzmaster, they usually won’t go anywhere.

When you want to use light strings on a Jazzmaster or Jaguar, you’re going to have to compensate somehow. You’ll need to increase the break angle and adjust the bridge, but if you’re going lighter than .011” sets you might also consider swapping out the bridge for those found on Fender Mustang guitars, which have a single, deep groove for each string. Or, you could go for the ultimate upgrade, the Mastery Bridge, but I’d make that recommendation to anyone regardless of string gauge. The Mastery Bridge is hands-down the best upgrade you can make to your Fender Offset guitar in my opinion. With it, you may still need a bit of a neck angle adjustment, but your strings will definitely stay on their saddles.

Next time, we’ll take a brief look behind the bridge and how to work with the vibrato unit for greater tuning stability and control. Wanna go wild and return to pitch? We’ve got you covered!

Mastery on a '58. Yessir.

Mastery on a ’58. Yessir.

*CAUTION: Never, ever use the red Loc-Tite on guitar parts unless you want them permanently frozen in place. The blue variety is meant for a non-permanent bond, allowing the user to make adjustments down the line. I think they’ve just come out with a green formula as well that’s not as strong, but I haven’t used it. Also, that stuff dries clear, so don’t freak out when you put blue goop all over your shiny new guitar. It’s cool. Simmer down.

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