Here’s a look under the hood of the funky rhythm-guitar master’s signature 6-string.
Hello and welcome back to Mod Garage. Since we’re still celebrating the 70th birthday of the Stratocaster, this month we will have a look under the hood of the Fender Cory Wong model to see just what’s so special about it. (I can tell you—it’s special!)
Guitarist, songwriter, and producer Cory Wong is renowned for his solo work, his band Fearless Flyers (with Mark Lettieri, Joe Dart, and Nate Smith), and collaborations with artists such as Vulfpeck, Jon Batiste, and Dave Koz. His playing style is deeply rooted in funk rhythm guitar, with a heavy dose of rock and jazz. Well-known for playing a Stratocaster, his signature model was released in 2021, and it’s a unique offering. If you want to build your personal Cory Wong Strat, here is your shopping list, starting with the primary structure:
• Alder body, scaled down to slightly smaller than a regular Stratocaster, with Fender American Ultra body contours
• Maple neck with a rosewood fretboard with rolled edges, modern Fender American Ultra D neck profile, slightly larger headstock, 25.5" scale, 10" to 14" compound radius, 22 medium jumbo frets
• Locking tuners with all short posts, a bone nut, and two roller string trees
• Vintage-style 6-screw synchronized tremolo
• Hair tie around the tremolo springs (which mutes them to enhance the rhythm tone)
• .010–.046 strings (nickel-plated steel)
“While these are all interesting features, resulting in a very comfortable guitar, you don’t need to copy every detail to transform one of your Stratocasters into a Cory Wong-style Strat.”
For the physical build, as you can see, Wong and Fender created a real signature instrument to his specs and wishes. While these are all interesting features, resulting in a very comfortable guitar, you don’t need to copy every detail to transform one of your Stratocasters into a Cory Wong-style Strat. My personal favorite of these is the hair tie for muting the tremolo springs. A lot of my funk-playing customers are doing similar things on their Strats to get a dry sound, and they’re using all kinds of funny things in there, like foam, rubber bands, and pieces of cotton, as well as hair ties.
Now, let’s have a look at the electronics:
• Seymour Duncan Cory Wong Clean Machine SSS pickup set
• Standard 5-way pickup-selector switch with classic Strat switching matrix
• 250k master volume pot with a 90/10 audio taper and Fender treble-bleed circuit PCB
• 250k tone pot with a 90/10 audio taper and Fender Greasebucket tone control PCB for only the neck pickup
• 250k audio push-push tone pot with Fender Greasebucket tone control PCB for only the bridge pickup; the push-push switch overrides the 5-way switch and defaults to middle + neck pickup (in parallel) as a preset
• Middle pickup is without tone control
Let’s break this down piece-by-piece to decode it:
Pickups
The pickup set is a custom SSS set from the Seymour Duncan company with the following specs:
• Overwound hum-canceling stacked bridge pickup with a 3-conductor wire and shield in permanent hum-canceling mode (red wire taped off), bevelled alnico 5 magnets, approximately 14.5k-ohm DCR
• Overwound middle single-coil, RWRP, beveled alnico 4 magnets, approximately 7.1k-ohm DCR
• Overwound neck single-coil, bevelled alnico 4 magnets, approx. 7.0k-ohm DCR
The pickups are voiced for clear highs, which perfectly suits Wong’s funky playing style and tone. While a lot of pickup companies will have pickups in that ballpark, it will be difficult to put together a full set that really works as intended. The Duncans in the Cory Wong Strat are available as a balanced set, so if you want to get as close as possible, I think this is your best bet.
5-Way Pickup Selector Switch
Nothing special here, just the standard 5-way switch with two switching stages that is wired like a classic Stratocaster:
bridge
bridge + middle in parallel
middle
middle + neck in parallel
neck
The upper tone pot is assigned to the neck pickup, while the lower tone pot is connected to the bridge pickup, leaving the middle pickup without tone control.
Master volume pot and treble-bleed circuit.
The 250k master volume pot is a standard CTS pot with a 90/10 audio taper found in all U.S.-made Fender guitars. The volume pot has the treble-bleed circuit from the Fender American Pro series, but uses a ready-to-solder PCB from Fender instead of individual electronic parts. The PCB is available from Fender individually (part #7711092000), but I have some thoughts about it. While using a PCB makes a lot of sense for mass production, it has some downsides for us mortal human beings:
• Soldering on PCBs requires some training and also special soldering tools.
• The PCB is quite expensive, while the individual electronic parts are only a few cents.
• The PCB uses ultra-tiny surface-mount parts, so it’s very difficult to repair or mod it to your personal taste.
I don’t think we need a PCB for adding a treble-bleed circuit, so let’s do this project using conventional electronic parts. The treble-bleed PCB contains a 1200 pF capacitor with a 150k-ohm resistor in parallel, plus another 20k-ohm resistor in series. Using individual parts, it looks like this:
Courtesy of single-coil.com
In general, a treble-bleed circuit will help you to combat the “volume vs. tone problem” when using passive single-coil pickups. When you turn down the volume (even just a bit), the high end or treble loss is not proportionate. In other words, a small cut in volume creates a far greater loss in your guitar’s treble response. Using a treble-bleed circuit is an easy way to get rid of this problem, as long as it is calculated carefully.
ONLINE ONLY: If you want to find out more about treble bleed circuits please have a look here: https://www.premierguitar.com/diy/mod-garage/treble-bleed-mod
Next month, we will continue with part two of the Cory Wong Stratocaster wiring, bringing it all together, so stay tuned!
Until then ... keep on modding!
- Rig Rundown: Cory Wong ›
- Theo Katzman: The Songwriter Behind the Guitarist ›
- Cory Wong—The Future of Funk Is Now! ›
The giveaways keep going! Enter Stompboxtober Day 25 for your chance to win today’s pedal from SoloDallas!
The Schaffer Replica® - BASS-X
After introducing the Schaffer Replica Storm low end legends like Rudy Sarzo, Billy Sheehan, and Pino Paladino discovered it to be equally amazing on bass. Based upon their input we made a few minor changes to this beloved circuit to make it more conducive to higher amplitude and lower frequencies. To our loyal bassists who have waited so patiently, we proudly introduce The Schaffer Replica - BASS-X.
Here’s part two of our look under the hood of the funky rhythm guitar master’s signature 6-string.
Hello and welcome back to Mod Garage. In this edition, we’re continuing our journey through the Fender Cory Wong Stratocaster wiring, bringing it all together.In the previous installment, the last feature on the funky 6-stringer’s signature axe that we discussed was the master volume pot and the corresponding treble-bleed circuit. Now, let’s continue with this guitar’s very special configuration of the tone pots.
Tone pot with Fender Greasebucket tone system:
This 250k tone pot is a standard CTS pot with a 90/10 audio taper found in all U.S.-built Fender guitars. The Cory Wong guitar uses the Fender Greasebucket system, which is added to the pot as a ready-to-solder PCB. The Greasebucket PCB is also available individually from Fender (part #7713546000), though you can use conventional electronic parts for this.
Fender introduced this feature in 2005 on some of the Highway One models and some assorted Custom Shop Strats. The Greasebucket name (which is a registered Fender trademark, by the way) is my favorite of Fender’s marketing names, but don’t let it fool you: Your tone will get cleaner with this modification, not greasy and dirty.
According to Fender, the Greasebucket tone circuit reduces high frequencies without adding bass as the tone knob is turned down. Don’t let that description confuse you. A standard Strat tone control does not add any bass frequencies! As you already know, with a passive system you can’t add anything that isn’t already there. You can reshape the tone by deemphasizing certain frequencies and making others more prominent. Removing highs makes lows more apparent and vice versa. In addition, the use of inductors (which is how a passive pickup behaves in a guitar circuit) and capacitors can create resonant peaks and valleys (band-passes and notches), further coloring the overall tone.
Cory Wong bringing the funk onstage.
This type of band-pass filter only allows certain frequencies to pass through, while others are blocked. The standard tone circuit in a Strat is called a variable low-pass filter (or a treble-cut filter), which only allows the low frequencies to pass through while the high frequencies get sent to ground via the tone cap.
The Greasebucket’s band-pass filter is a combination of a high-pass and a low-pass filter. This is supposed to cut high frequencies without “adding” bass, which has mostly to do with the resistor in series with the pot. That resistor means the control will never get to zero. You can get a similar effect by simply not turning the Strat’s standard tone control all the way down. (The additional cap on the wiper of the Greasebucket circuit complicates things a bit, though; together with the pickups it forms an RLC circuit, but I really don’t want to get into that here.)
The standard Fender Greasebucket tone system is used in the Cory Wong Strat, which includes a 0.1 μF cap and a 0.022 uF cap, along with a 4.7k-ohm resistor in series. These are the values used on the PCB, and without the PCB it looks like the illustration at the top of this column.
Push-push tone pot with preset overwriting function:
The lower tone pot assigned to the bridge pickup is a 250k audio push-push pot with a DPDT switch. The switch is used to engage a preset sound by overwriting the 5-way pickup-selector switch, no matter what switching position it is in. The preset functionality has a very long tradition in the house of Fender, dating back to the early ’50s, when Leo Fender designed a preset bass sound on position 3 (where the typical neck position is on a modern guitar) of the Broadcaster (and later the Telecaster) circuit. Wong loves the middle-and-neck-in-parallel pickup combination, so that’s the preset sound his push-push tone pot is wired for.
The neck pickup has a dedicated tone control while the middle pickup doesn’t, which is also another interesting feature. This means that when you hit the push-push switch, you will engage the neck and middle pickup together in parallel, no matter what you have dialed in on the 5-way switch. Hit the push-push switch again, and the 5-way switch is back to its normal functionality. Instead of a push-push pot, you can naturally use a push-pull pot or a DPDT toggle switch in combination with a normal 250k audio pot.
Here we go for the wiring. For a much clearer visualization, I used the international symbol for ground wherever possible instead of drawing another black wire, because we already have a ton of crossing wires in this drawing. I also simplified the treble-bleed circuit to keep things clearer; you’ll find the architecture of it with the correct values in the previous column.
Cory Wong Strat wiring
Courtesy of singlecoil.com
Wow, this really is a personalized signature guitar down to the bone, and Wong used his opportunity to create a unique instrument. Often, signature instruments deliver custom colors or very small aesthetic or functional details, so the Cory Wong Stratocaster really stands out.
That’s it! In our next column, we will continue our Stratocaster journey in the 70th year of this guitar by having a look at the famous Rory Gallagher Stratocaster, so stay tuned!
Until then ... keep on modding!
The Keeley ZOMA combines two of iconic amp effects—tremolo and reverb—into one pedal.
Key Features of the ZOMA
● Intuitive Control Layout: Three large knobs give you full control over Reverb Level, Tremolo Rate,and Depth
● Easy Access to Alternate Controls: Adjust Reverb Decay, Reverb Tone, and Tremolo Volume withsimple alt-controls.
● Instant Effect Order Switching: Customize your signal path. Position tremolos after reverb for avintage, black-panel tone or place harmonic tremolo before reverb for a dirty, swampy sound.
● True Bypass or Buffered Trails: Choose the setting that best suits your rig.
Three Reverb and Tremolo Modes:
● SS – Spring Reverb & Sine Tremolo: Classic spring reverb paired with a sine wave tremolo for that timelessblack-panel amp tone.
● PH – Plate Reverb & Harmonic Tremolo: Smooth, bright plate reverb combined with swampy harmonictremolo.
● PV – Plate Reverb & Pitch Vibrato: Achieve a vocal-like vibrato with ethereal plate reverb.
Reverb: Sounds & Controls
● Spring Reverb: Authentic tube amp spring reverb that captures every detail of vintage sound.
● Plate Reverb: Bright and smooth, recreating the lush tones of vibrating metal plates.
● Reverb Decay: Adjust the decay time using the REVERB/ALT SWITCH while turning the Level knob.
● Reverb Tone: Modify the tone of your reverb using the REVERB/ALT SWITCH while turning the Rate knob.
Tremolo: Sounds & Controls
● Sine Wave/Volume Tremolo: Adjusts the volume of the signal up and down with smooth sine wavemodulation.
● Harmonic Tremolo: Replicates classic tube-amp harmonic tremolo, creating a phaser-like effect withphase-split filtering.
● Pitch Vibrato: Delivers pitch bending effects that let you control how far and how fast notes shift.
● Alt-Control Tremolo Boost Volume: Adjust the boost volume by holding the REVERB/ALT footswitch whileturning the Depth knob.
The ZOMA is built with artfully designed circuitry and housed in a proprietary angled aluminum enclosure, ensuring both simplicity and durability. Like all Keeley pedals, it’s proudly designed and manufactured in the USA.
ZOMA Stereo Reverb and Tremolo
The first sound effects built into amplifiers were tremolo and reverb. Keeley’s legendary reverbs are paired with their sultry, vocal-like tremolos to give you an unreal sonic experience.
Your 100 Guitarists hosts are too young to have experienced SRV live. We’ve spent decades with the records, live bootlegs, and videos, but we’ll never know quite how it felt to be in the room with SRV’s guitar sound.
Stevie Ray Vaughan was a force of nature. With his “Number One” Strat, he drove a veritable trove of amps—including vintage Fenders, a rotating Vibratone cab, and a Dumble—to create one of the most compelling tones of all, capable of buttery warmth, percussive pick articulation, and cathartic, screaming excess. As he drew upon an endless well of deeply informed blues guitar vocabulary, his creativity on the instrument seemingly knew no bounds.
Your 100 Guitarists hosts are too young to have experienced SRV live. We’ve spent decades with the records, live bootlegs, and videos, but we’ll never know quite how it felt to be in the room with SRV’s guitar sound. So, we’d like to spend some time imagining: How did it feel when it hit you? How did he command his band, Double Trouble? The audience?
SRV was mythical. His heavy-gauge strings tore up his fingers and made a generation of blues guitarists work a lot harder. And his wall of amps seems finely curated to push as much air in all directions as possible. How far did he take it? Was he fine-tuning his amps to extreme degrees? Or could he get his sound out of anything he plugged into?