preferred resistor type

PWR RYD · 14th January 2011, 03:36 PM

What is the preferred type of resistor to use? I can find the correct resistance and wattage in several different types (carbon comp., carbon film, metal oxide, etc.). For instance a 1 Meg on the input from a triodes grid to ground. Or the cathode bias resistor. Thanks.

kevinkr · 14th January 2011, 03:44 PM

I'm not a fan of carbon film or metal oxide in the signal path... Metal film, carbon comp and non-inductive wirewounds (plate load and high current cathode followers) can be used in the signal path.. More exotic types like tantalum and foil types can also be used if you have the budget.

Some sense of the specific application would allow recommendations targeted at the end use.

PWR RYD · 14th January 2011, 04:26 PM

Specifically the resistors in this preamp circuit:

Wavebourn · 04:48 PM

The best resistors for preamps, I believe, PTMN -- they are non-inductive Russian military wirewound resistors. For the rest I prefer MLT or C2-23 resistors, metal film on ceramic, non-magnetic.

kevinkr · 14th January 2011, 04:45 PM

Quote:

Originally Posted by PWR RYD

Specifically the resistors in this preamp circuit:

As Wavebourn states, but I think generic Dale, Vishay or other RN60 type metal film resistors would be fine too.

DF96 · 14th January 2011, 04:45 PM

Metal film is a good all-rounder. Carbon comp can be noisy, and slightly non-linear.

14th January 2011, 03:36 PM	#1
PWR RYD diyAudio Member Join Date: Nov 2009 Location: Rockford, IL	preferred resistor type What is the preferred type of resistor to use? I can find the correct resistance and wattage in several different types (carbon comp., carbon film, metal oxide, etc.). For instance a 1 Meg on the input from a triodes grid to ground. Or the cathode bias resistor. Thanks.

14th January 2011, 03:44 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I'm not a fan of carbon film or metal oxide in the signal path... Metal film, carbon comp and non-inductive wirewounds (plate load and high current cathode followers) can be used in the signal path.. More exotic types like tantalum and foil types can also be used if you have the budget. Some sense of the specific application would allow recommendations targeted at the end use. __________________ www.kta-hifi.net

14th January 2011, 04:35 PM	#4
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	The best resistors for preamps, I believe, PTMN -- they are non-inductive Russian military wirewound resistors. For the rest I prefer MLT or C2-23 resistors, metal film on ceramic, non-magnetic. __________________ The devil is not so terrible as his mathematical model! Wavebourn: We Create Creativity! Last edited by Wavebourn; 14th January 2011 at 04:48 PM.

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14th January 2011, 04:45 PM	#6
DF96 diyAudio Member Join Date: May 2007	Metal film is a good all-rounder. Carbon comp can be noisy, and slightly non-linear.

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