Hi. Got a Magnatone 197-3-v. It has: 1 ea- 6v6, 6sj7, 5y3. 261 vdc at the 6v6 plate & about 14vdc across the OT. There was a fried .01 cap across the OT primary.
Is it OK to just replace the cap with another 600v or should I put a resistor in series with it like most of the filter examples that I have seen?
I have listened to it with the .01 straight across the primary and also tried 1k and 5k ohm resistors in series with the cap. All three sound surprisingly similar with the speaker that I have connected. Without the filter it is ice pick like.
Second question. Using a resistor in series, why do people recommend big watt resistors? With the volume max and pounding a power chord I get about 180vac across the xfmr (cap + resistor) but only read about 3 vac across the resistor itself (this doesn't make sense to me yet...still thinking). Maybe me & my fluke can't read power chord frequencies properly across an OT primary?
An explanation would be great.
Thanks!
edit: missed this good info earlier when searching-
http://music-electronics-forum.com/t13097/
Is it OK to just replace the cap with another 600v or should I put a resistor in series with it like most of the filter examples that I have seen?
I have listened to it with the .01 straight across the primary and also tried 1k and 5k ohm resistors in series with the cap. All three sound surprisingly similar with the speaker that I have connected. Without the filter it is ice pick like.
Second question. Using a resistor in series, why do people recommend big watt resistors? With the volume max and pounding a power chord I get about 180vac across the xfmr (cap + resistor) but only read about 3 vac across the resistor itself (this doesn't make sense to me yet...still thinking). Maybe me & my fluke can't read power chord frequencies properly across an OT primary?
An explanation would be great.
Thanks!
edit: missed this good info earlier when searching-
http://music-electronics-forum.com/t13097/
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