Fig. 1
Hello and welcome back to Mod Garage. As a follow-up to the “Tapping and Splitting: What’s the Difference?” column in the October 2021 issue, this month we’ll take a closer look at variable splitting of humbuckers that’s also known as the “spin-a-split” mod. This mod can be applied to all humbuckers with a 4-conductor wiring because we need access to the start and end of both coils. You can’t do this mod to humbucker pickups with a standard 2-conductor wiring. Most humbuckers can be converted from 2-conductor to 4-conductor wiring; however, you need to open the pickup for this, which can be a delicate job. That job is best left to a guitar tech, because destroying the pickup is easy to do.
The basic idea of this mod is very simple. With a switch, you can split the humbucker to a single-coil pickup resulting in two very different tones: 100 percent humbucker or 100 percent single-coil. The variable coil-splitting mod uses a pot instead of a switch, so you don’t have only two given tones but also anything in between, giving you precise control over the amount of split.
This is not just about balancing tone, but also balancing hum-free operation. The more humbucker you have, the less hum and noise will be present and vice versa. With the pot fully opened you have 100 percent humbucker, and with the pot fully closed you have 100 percent single-coil. But it’s easy to dial in any tone you want, for example, 70 percent humbucker plus 30 percent single-coil, which gives a good proportion of hum-free operation.
Another cool bonus is that when you have too much bass or overdrive in full humbucker mode, you can use the spin-a-split to instantly clear things up.
So, you’ll have easy access to a huge range of tones from only one humbucker pickup by mixing single-coil and humbucker sounds. You can also mimic other pickups with this mod, such as P-90s or Filter’Trons. Another cool bonus is that when you have too much bass or overdrive in full humbucker mode, you can use the spin-a-split to instantly clear things up.
The idea is not new. It first showed up in the mid 1970s and Hartley Peavey is the person to whom all the credit must go. Most people think this is an easy mod, which only partly hits the nail, and I’ll explain why in just a moment.
Let’s have a look at the basic configuration and how this mod works (Fig. 1). You need a spin-a-split pot for each humbucker pickup you want to install this wiring into. As usual, I chose the Seymour Duncan color code to demonstrate the mod because it’s the quasi-standard in the guitar world. If you want to transfer the color code to humbucker pickups from another company, you can use one of the many color code transfer charts on the internet.
As usual, the green and the bare wires go to ground so there’s nothing new here. The black wire is the output, going to a pickup-selector switch or to the input lug of a volume control. The red and the white wires are going to the middle lug (lug #2) of the spin-a-split pot while the bottom lug (lug #3) is grounded. When the pot is turned all the way down, the red and white wires will be connected directly to ground, which is a normal coil-split setup for single-coil tone. When the control is turned all the way up, the red and white wires are not connected to ground at all, which means normal humbucker mode and tone.
The idea is not new. It first showed up in the mid 1970s and Hartley Peavey is the person to whom all the credit must go.
This is where the trouble starts. In reality, both wires are still slightly connected to ground but with a large resistance, depending on what pot you use for this. This will drain a good portion of volume and tone to ground. A perfect and easy fix to get rid of this lingering connection to ground is using a no-load pot, which removes the ground connection when the pot is turned all the way up.
If you want to use a tone pot as a spin-a-split pot, you’ll find a 500k or 250k audio pot. It’s essential to replace this one with a no-load pot or convert the existing pot into a no-load pot by breaking the connection internally. If for any reason this is not possible, you should use a 100k pot, but finding them in guitar-friendly configurations is a challenge. Linear pots work best for this mod, so with a little luck you’ll find a 500k linear tone pot in your humbucker guitar, which is a perfect base for this mod by making it a no-load pot.
Fig. 2
As you can see, it’s not as easy as it seems, and as always, the devil is in the details.
In closing, here’s an illustration (Fig. 2) of the spin-a-split mod together with a volume pot for the same pickup. Instead of connecting the wire to the input of the volume pot, you can connect it to a pickup-selector switch if you have more than one pickup in your guitar.
That’s it! Next month we’ll do a mod for Stratocaster guitars called the “Ricky King” mod, so stay tuned. Until then ... keep on modding!
- Tapping and Splitting: What's the Difference? - Premier Guitar ›
- Mod Garage: '50s Les Paul Wiring in a Telecaster - Premier Guitar ›
- Mod Garage: Four Ways to Configure a 4-Conductor Humbucker ... ›
Gibson originally launched the EB-6 model with the intention of serving consumers looking for a “tic-tac” bass sound.
The Gibson EB-6 was announced in 1959 and came into the world in 1960, not with a dual-horn body but with that of an elegant ES-335. They looked stately, with a thin, semi-hollow body, f-holes, and a sunburst finish. Our pick for this Vintage Vault column is one such first-year model, in about as original condition as you’re able to find today. “Why?” you may be asking. Well, read on....
When the EB-6 was introduced, the Bass VI was still a glimmer in Leo Fender’s eye. The real competition were the Danelectro 6-string basses that seemed to have popped up out of nowhere and were suddenly being used on lots of hit records by the likes of Elvis, Patsy Cline, and other household names. Danos like the UB-2 (introduced in ’56), the Longhorn 4623 (’58), and the Shorthorn 3612 (’58) were the earliest attempts any company made at a 6-string bass in this style: not quite a standard electric bass, not quite a guitar, nor, for that matter, quite like a baritone guitar.
The only change this vintage EB-6 features is a replacement set of Kluson tuners.
Photo by Ken Lapworth
Gibson, Fender, and others during this era would in fact call these basses “baritone guitars,” to add to our confusion today. But these vintage “baritones” were all tuned one octave below a standard guitar, with scale lengths around 30", while most modern baritones are tuned B-to-B or A-to-A and have scale lengths between 26" and 30".)
At the time, those Danelectros were instrumental to what was called the “tic-tac” bass sound of Nashville records produced by Chet Atkins, or the “click-bass” tones made out west by producer Lee Hazlewood. Gibson wanted something for this market, and the EB-6 was born.
“When the EB-6 was introduced, the Bass VI was still a glimmer in Leo Fender’s eye.”
The 30.5" scale 1960 EB-6 has a single humbucking pickup, a volume knob, a tone knob, and a small, push-button “Tone Selector Switch” that engages a treble circuit for an instant tic-tac sound. (Without engaging that switch, you get a bass-heavy tone so deep that cowboy chords will sound like a muddy mess.)
The EB-6, for better or for worse, did not unseat the Danelectros, and a November 1959 price list from Gibson hints at why: The EB-6 retailed for $340, compared to Dano price tags that ranged from $85 to $150. Only a few dozen EB-6 basses were shipped in 1960, and only 67 total are known to have been built before Gibson changed the shape to the SG style in 1962.
Most players who come across an EB-6 today think it was a response to the Fender Bass VI, but the former actually beat the latter to the market by a full year.
Photo by Ken Lapworth
It’s sad that so few were built. Sure, it was a high-end model made to achieve the novelty tic-tac sound of cheaper instruments, but in its full-voiced glory, the EB-6 has a huge potential of tones. It would sound great in our contemporary guitar era where more players are exploring baritone ranges, and where so many people got back into the Bass VI after seeing the Beatles play one in the 2021 documentary, Get Back.
It’s sadder, still, how many original-era EB-6s have been parted out in the decades since. Remember earlier when I wrote that our Vintage Vaultpick was about as original as you could find? That’s because the model’s single humbucker is a PAF, its Kluson tuners are double-line, and its knobs are identical to those on Les Paul ’Bursts. So as people repaired broken ’Bursts, converted other LPs to ’Bursts, or otherwise sought to give other Gibsons a “Golden Era” sound and look ... they often stripped these forgotten EB-6 basses for parts.
This original EB-6 is up for sale now from Reverb seller Emerald City Guitars for a $16,950 asking price at the time of writing. The only thing that isn’t original about it is a replacement set of Kluson tuners, not because its originals were stolen but just to help preserve them. (They will be included in the case.)
With so few surviving 335-style EB-6 basses, Reverb doesn’t have a ton of sales data to compare prices to. Ten years ago, a lucky buyer found a nearly original 1960 EB-6 for about $7,000. But Emerald City’s $16,950 asking price is closer to more recent examples and asking prices.
Sources: Prices on Gibson Instruments, November 1, 1959, Tony Bacon’s “Danelectro’s UB-2 and the Early Days of 6-String Basses” Reverb News article, Gruhn’s Guide to Vintage Guitars, Tom Wheeler’s American Guitars: An Illustrated History, Reverb listings and Price Guide sales data.
Originally released in the 1980s, the Victory has long been a cult favorite among guitarists for its distinctive double cutaway design and excellent upper-fret access. These new models feature flexible electronics, enhanced body contours, improved weight and balance, and an Explorer headstock shape.
A Cult Classic Made Modern
The new Victory features refined body contours, improved weight and balance, and an updated headstock shape based on the popular Gibson Explorer.
Effortless Playing
With a fast-playing SlimTaper neck profile and ebony fretboard with a compound radius, the Victory delivers low action without fret buzz everywhere on the fretboard.
Flexible Electronics
The two 80s Tribute humbucker pickups are wired to push/pull master volume and tone controls for coil splitting and inner/outer coil selection when the coils are split.
For more information, please visit gibson.com.
Gibson Victory Figured Top Electric Guitar - Iguana Burst
Released in 1983, the Roland SDE-3000 rackmount delay was a staple for pro players of the era and remains revered for its rich analog/digital hybrid sound and distinctive modulation. BOSS reimagined this retro classic in 2023 with the acclaimed SDE-3000D and SDE-3000EVH, two wide-format pedals with stereo sound, advanced features, and expanded connectivity. The SDE-3 brings the authentic SDE-3000 vibe to a streamlined BOSS compact, enhanced with innovative creative tools for every musical style. The SDE-3 delivers evocative delay sounds that drip with warmth and musicality. The efficient panel provides the primary controls of its vintage benchmark—including delay time, feedback, and independent rate and depth knobs for the modulation—plus additional knobs for expanded sonic potential.
A wide range of tones are available, from basic mono delays and ’80s-style mod/delay combos to moody textures for ambient, chill, and lo-fi music. Along with reproducing the SDE-3000's original mono sound, the SDE-3 includes a powerful Offset knob to create interesting tones with two simultaneous delays. With one simple control, the user can instantly add a second delay to the primary delay. This provides a wealth of mono and stereo colors not available with other delay pedals, including unique doubled sounds and timed dual delays with tap tempo control. The versatile SDE-3 provides output configurations to suit any stage or studio scenario.
Two stereo modes include discrete left/right delays and a panning option for ultra-wide sounds that move across the stereo field. Dry and effect-only signals can be sent to two amps for wet/dry setups, and the direct sound can be muted for studio mixing and parallel effect rigs. The SDE-3 offers numerous control options to enhance live and studio performances. Tap tempo mode is available with a press and hold of the pedal switch, while the TRS MIDI input can be used to sync the delay time with clock signals from DAWs, pedals, and drum machines. Optional external footswitches provide on-demand access to tap tempo and a hold function for on-the-fly looping. Alternately, an expression pedal can be used to control the Level, Feedback, and Time knobs for delay mix adjustment, wild pitch effects, and dramatic self-oscillation.
The new BOSS SDE-3 Dual Delay Pedal will be available for purchase at authorized U.S. BOSS retailers in October for $219.99. To learn more, visit www.boss.info.