Separate names with a comma.
Discussion in 'Tech-Talk' started by Pisces One, Aug 2, 2020 at 12:22 PM.
What's the difference between "Greenie", and Silver Mica treble bleeds?
It's a cap (types, components, not values), and not for the space shuttle, so you can get into snake oil territory.
This will tell you the technical side of treble bleeds.
types and brands of caps are ... marketing.
In a treble bleed there is no difference from the capacitor color. Capacitance (uF) makes a difference, and if the particular treble bleed uses one or more resistors, resistance (Ohms) makes a difference.
Also, in one of your links there is a resistor in series with the capacitor and in the other there is a resistor in parallel with the capacitor. That makes a difference. I like the Fender circuit that uses two resistors. But unfortunately the only way to find out the particular component values that work best is to experiment with different values, with the guitar and the guitar cable you plan to use. Since the treble bleed counteracts the loss of highs from the cable capacitance, what works with a 10' cable won't work the same with a 20' cable of the same type.
The fender bleed:
The difference is in the materials of the dielectric insulation and the conductor, and methods of construction.
Silver mica is descriptive of construction.
Silver is deposited on a sheet of mica dielectric.
"Greenie" is not descriptive of anything other than colour.
An educated guess can be made that it is typical modern metalized film.
Aluminum is deposited on a sheet of polyester film dielectric.
None of these differences in construction have any audible effect on sound assuming the same measured values.