Build Your Own: Harmonic Percolator
Everything you need to build your own Harmonic Percolator (HP-1)
In the early 1970's an eccentric Wisconsin engineer designed a fuzz that would go on to become a cult classic. The Harmonic Percolator (HP-1). The Percolator features a hybrid Si / Ge single ended design that clips asymmetrically and imparts the Percolator with a unique and highly textured fuzz tone. The Percolator excels at everything from high gain fuzz sounds and ripping textures to subtle coloration and clean-up when rolling back the guitar volume. If you're a fan of the guitar tones on "In Utero" this is a great choice.
No expense spared in selecting parts for this build. Each transistor set is meticulously tuned with an amp and breadboard to sound true to the original. The 50’s style eyelet board layout and quality components will ensure this circuit will be blowing out your eardrums for years to come! The build document includes a parts list, detailed layout diagrams, and step-by-step instructions with pictures. There is also a supplemental overview of popular boutique modifications, vintage variations of the original, and circuit analysis for those who wish to take a deeper dive and explore the inner workings of these classic circuits.
Included in kit:
Instructions to build the Interfax Harmonic Percolator (HP-1) circuit
New old stock germanium transistors / diodes (now shipping with a black glass Mullard Ge transistor and 60's Mullard Ge diodes)
Polyester film capacitors and carbon resistors
Pre-drilled powder coated enclosure
Alpha potentiometers
Vintage style amp jacks
FK brand foot switch
Eyelet board
LED and bezel
Knobs
9V power jack (standard 2.1mm center negative)
Everything you need to build your own Harmonic Percolator (HP-1)
In the early 1970's an eccentric Wisconsin engineer designed a fuzz that would go on to become a cult classic. The Harmonic Percolator (HP-1). The Percolator features a hybrid Si / Ge single ended design that clips asymmetrically and imparts the Percolator with a unique and highly textured fuzz tone. The Percolator excels at everything from high gain fuzz sounds and ripping textures to subtle coloration and clean-up when rolling back the guitar volume. If you're a fan of the guitar tones on "In Utero" this is a great choice.
No expense spared in selecting parts for this build. Each transistor set is meticulously tuned with an amp and breadboard to sound true to the original. The 50’s style eyelet board layout and quality components will ensure this circuit will be blowing out your eardrums for years to come! The build document includes a parts list, detailed layout diagrams, and step-by-step instructions with pictures. There is also a supplemental overview of popular boutique modifications, vintage variations of the original, and circuit analysis for those who wish to take a deeper dive and explore the inner workings of these classic circuits.
Included in kit:
Instructions to build the Interfax Harmonic Percolator (HP-1) circuit
New old stock germanium transistors / diodes (now shipping with a black glass Mullard Ge transistor and 60's Mullard Ge diodes)
Polyester film capacitors and carbon resistors
Pre-drilled powder coated enclosure
Alpha potentiometers
Vintage style amp jacks
FK brand foot switch
Eyelet board
LED and bezel
Knobs
9V power jack (standard 2.1mm center negative)
Everything you need to build your own Harmonic Percolator (HP-1)
In the early 1970's an eccentric Wisconsin engineer designed a fuzz that would go on to become a cult classic. The Harmonic Percolator (HP-1). The Percolator features a hybrid Si / Ge single ended design that clips asymmetrically and imparts the Percolator with a unique and highly textured fuzz tone. The Percolator excels at everything from high gain fuzz sounds and ripping textures to subtle coloration and clean-up when rolling back the guitar volume. If you're a fan of the guitar tones on "In Utero" this is a great choice.
No expense spared in selecting parts for this build. Each transistor set is meticulously tuned with an amp and breadboard to sound true to the original. The 50’s style eyelet board layout and quality components will ensure this circuit will be blowing out your eardrums for years to come! The build document includes a parts list, detailed layout diagrams, and step-by-step instructions with pictures. There is also a supplemental overview of popular boutique modifications, vintage variations of the original, and circuit analysis for those who wish to take a deeper dive and explore the inner workings of these classic circuits.
Included in kit:
Instructions to build the Interfax Harmonic Percolator (HP-1) circuit
New old stock germanium transistors / diodes (now shipping with a black glass Mullard Ge transistor and 60's Mullard Ge diodes)
Polyester film capacitors and carbon resistors
Pre-drilled powder coated enclosure
Alpha potentiometers
Vintage style amp jacks
FK brand foot switch
Eyelet board
LED and bezel
Knobs
9V power jack (standard 2.1mm center negative)