Bruce of Gombrelli Guitars creates all kinds of different wiring circuits for guitars. He is a Degree’d Electrical Engineer that happens to love Stratocasters. Here’s a few of his favorites (and some of his clients favorites!)
At Gombrelli Guitars USA we are constantly evaluating our designs and coming up with new SINGLE RELEASE named versions like “TORNADO”, “THE BOSS” and more, those are single release but may incorporate some of the circuits below.
NEW or UPDATED in 2024
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Circuits
Models
SOLID GOLD (Core Circuits)
This design is customized to the circuit used but works excellent with the Stratbucker circuits. This is a customized BASS control that tames and adds punch to any Stratocaster
- Customized to the circuit used
- Installed in Tone Pot 1 Location
- Wide open it is out of the circuit
- Can be used when switch on or off
- Is extremely good with the TRIBUCKER circuit
This can be implemented as part of another design or with 2 pickups or all 3. This is implemented by a DPDT Push Pull Switch as part of a potentiometer. The StratBucker is more simple and only work on the Neck Pickup (Or Bridge) in Series with the middle pickup to create a “Humbucker” arrangement. This won’t necessary kill all the buzz but it will definately reduce it and completely warm up and boost the output. The amount of hum reduction depends on it a reverse wound middle pickup is employed in the design. With NO RWRP pickup in the middle, it is referred to as the VINTAGE BOOSTER or DUAL VINTAGE BOOSTER – These do not buck up but increase the output and lower the frequency notch create very unique higher output pickups for the Bridge or Bridge and Neck.
NOISELESS: There is a noiseless version of this but it is almost ALWAYS implemented with a BASSTAMER
- Bridge + Mid
- Mid
- Mid (If RWRP both the series wired pickups create a humbucker)
- Mid
- Neck + Mid
This is usually done by making the Neck Pickup in Parallel with the Bridge Pickup with a decided adjustable pot. Full on it is effective out of the circuit, full on it makes a dead short and makes for a Neck//Bridge arrangement. The beauty of this is that it can be adjustable Full On (Counter Clockwise) SUPERSPANK and SPANKSWITCH. Super Spank has a minor resistance mod. This is typically a parallel connection of the neck and bridge. It can be implemented as part of any wiring scheme. If it’s a blender, it’s got a variable pot. I don’t do this very often because it uses up a pot position. SUPERSPANK us implemented as an ON OFF ON which allows two discrete settings for the Spank Switch.
No, this isn’t a ship. This is a mod for HSS guitar. Normally these are factory wired with the bucker on full. This mod does 2 things, it flips it so it’s like a normal Stratocaster. When you pull the switch it turns the bridge into the full humbucker and also add a bucker in the neck by putting the mid in series with the neck at the same time.
Switch Off, Normal single coils (and split humbucker)
- Split Humbucker
- Split Humbucker//mid
- Mid
- Mid//Neck
- Neck
Switch On
- Humbucker
- Mid//Humbucker
- Mid
- Mid
- Neck + Mid
This is a simple modification of the Tone control. Usually Fender Stratocasters of the Modern era has a .022uf capacitor as the tone value. There is a lower cap which used to be called “Woman” tone but it’s a .015uf capacitor that gives a much less dark roll off. It a Gombrelli Guitars favorite. The simple version of this is called a DualTone which is a switch that changes the capacitor value so you have the best of both worlds.
Toggle On. 015uf Capacitor (or .01uf Cap) Toggle Off: .022uf capacitor
Some players like even more choices so we also use a rotary switch to switch between the roll off circuits (See Strat-A-Tone): The cost is giving up one of your tone controls for a rotary control. Usually the 2nd one. However you can still install other circuits like a Dual-Stratbucker with the Master Volume. This is a a fun circuit.
It is often combined with a SPANK option on one or more of these rotary choices. Typically: .010 or .011, .015, .022, .033, .047
OTHER DESIGNS
What’s better than 1 or 2 options? How about 5 options!! The beauty of this design it’s a SINGLE switch position for each wiring option. Instead of confusing multiple switches, it’s all built into 1. To make it even better positions 1 AND 6 are both stock switching so if you get lost, you can just turn it ether all the way clockwise OR counter clockwise to get back to a pure stock stratocaster.
Position 1 – Stock Stratocaster (all the way counter clockwise)
- 1 Bridge
- 2 Middle//Bridge (Split)
- 3 Middle
- 4 Middle//Neck
- 5 Neck
Position 2 – Neck Stratbucker and Bridge TriBucker
- 1 Humbucker + Middle
- 2 Middle//Split Bridge
- 3 Middle
- 4 Middle
- 5 Neck + Middle (series
Position 3 – Neck Stratbucker, Bridge Tribucker and Spank
- 1 Tribucker//Stratbucker
- 2 Middle//(Split Humbucker)
- 3 Middle
- 4 Middle
- 5 Stratbucker//Tribucker
Position 4 – Spank Only
- 1 Humbucker//Neck
- 2 (Split Humbucker)// Middle
- 3 Middle
- 4 Middle
- 5 Neck//Bridge Humbucker
Position 5 – Middle Parallel
- 1 Humbucker
- 2 (Split Humbucker)// Middle
- 3 Middle//Neck
- 4 Middle//Neck
- 5 Middle//Neck
This design creates a massive humbucker and a Vintage Humbucker at a flip of a switch. This design is completely compatible with HSS (the wiring is slightly different and could include a coil tap. It also can be used with the Blender pot for amazing versatility. This is a variation on the TRIO-STRATBUCKER to make it compatible with the Blender and simplifies the circuit somewhat.
Wired Against The Bridge
- Bridge + Middle + Neck
- Middle + Neck
- Middle + Neck
- Neck
- Neck
Wired Against The Neck
- Bridge
- Bridge
- Middle + Bridge
- Middle + Bridge
- Neck + Middle + Bridge
This design came from the idea of also being able to make the middle pickup into a bucker which is my MID BUCKER circuit while having the other pickups being regular single coil but adds a Dual Stratbucker circuit ALSO! The challenge of this design is that it had to work with the Dual-Stratbucker so it actually “Reroutes” on of the wires on the Dual-Stratbucker if they are both installed on the same guitar.
All by itself it routes the Middle pickup to be a bucker with the Bridge OR Neck (depends on the wiring) while leaving the other pickup the same. The really cool thing is that this is completely compatible with the Dual-Stratbucker and actually rewires it when both are on!
The Trick: This includes a capacitor in Series with the Bridge Pickup ONLY when both switches are on. That might sound strange but it works to block Low frequencies from the otherwise overloaded dark 3 series pickups arrangement. It also serves to slightly alter the tone in the process due to the RC change. It now makes the Bridge+Cap+Middle+Neck sound awesomeee!
Wired Against The Bridge
- Bridge
- Bridge
- Middle + Bridge
- Middle + Bridge || Neck
- Neck
Wired Against The Neck
- Bridge
- Middle + Neck || Bridge
- Middle + Bridge
- Neck
- Neck
If Wired with Dual Stratbucker (both on)
- Bridge + Middle + FilterCap + Neck
- Neck + Middle
- Neck + Middle
- Neck
- Neck
This design came from the idea of also being able to make the middle pickup into a bucker while having the other pickups being regular single coil.
This design is 100% compatible with the Dual-Stratbucker and is called the TRIO-BUCKER when both are wired in the same guitar.
All by itself it routes the Middle pickup to be a bucker with the Bridge OR Neck (depends on the wiring) while leaving the other pickup the same.
Wired Against The Bridge
- Bridge
- Bridge
- Middle + Bridge
- Middle + Bridge || Neck
- Neck
Wired Against The Neck
- Bridge
- Middle + Neck || Bridge
- Middle + Bridge
- Neck
- Neck
This wiring design is completely off the charts. You can take practically any Fender Stratocaster pickup set and pull out tones until your fingers fall off.
WITH SPANK (not compatible with some circuits)
- Freeway – Drops the tone out completely, this is pickups straight to the output.
- .011 Tone – Puts this value cap on the tone control
- .022 Tone – Puts this value cap on the tone control
- .011 Tone with SuperSpank™
- .022 Tone with SuperSpank™
- .047 Tone with SuperSpank™
FULL TONE MOD
- Freeway – Drops the tone out completely, this is pickups straight to the output.
- .011 Tone – Puts this value cap on the tone control (Wa Tone)
- .015 Tone – Puts this value cap on the tone control (Woman Tone)
- .022 Tone – Fender Modern Standard
- .033 Tone – Mild Dark
- .047 Tone – Old Stratocaster and Gibson Dark
CANDYTONE™
QUADSTAR™
STEAMBUCKER™
The Titan is implemented with a super switch and uses either HSS or a Noiseless stacked Humbucker in the Bridge
This one implements 2 switches (micro or push pull) and a super switch to come up with a unique design for the switch that has no duplication. The middle pickup is Center Speedway.
If you want SSS select another design
Stock:
- 1. Bridge Humbucker (or stacked coil with a tap)
- 2. Split Hum//Mid
- 3. Mid
- 4. Mid//Neck
- 5. Neck
Switched 1 ON
- Bridge + Mid (quad coil)
- Bridge//Mid
- Mid
- Neck//Mid
- Neck + Mid (quad coil)
Switched 2 ON Only
- Split Bridge (Single Coil uses real coil)
- Split Bridge//Mid (Spankier than stock)
- Mid
- Neck//Mid
- Neck + Mid
Switches 1 and 2 On
- Split Bridge + Mid (Tri Coil)
- Split Bridge//Mid (Spanker than just Bridge//Mid
- Mid
- Neck//Mid
- Neck + Mid (Quad Coil)
Typically the middle pickup is wired CENTER SPEEDWAY™
This can be combined with Treble Bleeds
The Titan is implemented with a super switch and uses either HSS or a Noiseless stacked Humbucker in the Bridge
This somewhat complicated circuit is a single Triple Pole/Double Throw switch (TPDT). The beauty is the one flip of a switch creates a completely different wiring of the switch which contains both SERIES and PARALLEL arrangements. I really like this one a lot.
Stock:
- 1. Bridge Humbucker
- 2. Split Hum//Mid
- 3. Mid
- 4. Mid//Neck
- 5. Neck
Switched ON
- Bridge + Mid
- Split Bridge//Mid
- Mid
- Bridge//Mid//neck
- Neck + Mid
Typically the middle pickup is wired CENTER SPEEDWAY™
This can be combined with Treble Bleeds