Mark, Paul; What's the best choice for 1-ohm, 5W plate resistors?

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

0

The first batch of 1-ohm, 5W resistors I installed in a pair of MA-1's are Dale CP-5-26. These are 5W ceramic, wirewound units that I just learned (by viewing http://www.vishay.com/docs/cp_30213.pdf) might have a fusible characteristic. The web site information is unclear on how I would determine if these (surplus) resistors are fusible but they do seem to be. I now need to replace 6 open resistors in one amp because three failed Sovtek 6AS7's "took them out".
The fusibility aspect may have the benefit of a mess-free tube failure (resistors are not blown to bits) but there was no outward sign that the failure occurred. The tubes didn't report their failure with a heart stopping, brilliant flash but I wasnâ€™t present to know if the failures were audible. Resistor-less 6AS7 failures are quite audible. Looks like a liability now.
Mark, you recommended (post on June 04, 1998) 5-watt plate resistors to avoid resistor damage should a tube arc over. Do you have any further recommendations? Tube status LEDâ€™s? :-)

This post is made possible by the generous support of people like you and our sponsors:

Sonic Craft

Topic - Mark, Paul; What's the best choice for 1-ohm, 5W plate resistors? - marty 15:56:05 07/05/01 (3)

Re: Mark, Paul; What's the best choice for 1-ohm, 5W plate resistors? - mark 07:11:12 07/06/01 (2)

LED monitoring - Allan 19:36:59 07/06/01 (1)

Re: LED monitoring - mark 06:33:19 07/07/01 (0)

You can not post to an archived thread.