If you have a preamp where you need to remove the cover to access the tubes you need it to be off (and best unplugged) for about 30 minutes first before rolling tubes to insure hazardous voltages in the power supply have had time to discharge. Not matter what you should NEVER change a tube w/o powering down first.
Rolling pre tubes question
Hi all,
A few questions from a novice tube roller. I have a Manley Stingray II and have been playing around with the pre tubes.
1. Should amp be turned all the way off, or is stand by OK when changing tubes ?
2. Tubes that have paper labels glued on them ( Brimar CV 4033 ) OK ?
3. Can input tubes ( 12 at7's or the Brimar CV 4033's ) be substituted for the driver tubes...6414's ? I have read that 6414 can be substituted for 12 at7's but what about visa verse ?
I have use the Brimar CV 4033 in the 12 at7 input spot and enjoy the sound, so was wondering about it as a driver ?
4. What tube is more impact on the sound , input or driver ?
5. Ideas for rolling the 6414 as i do not see many around ?
Thank you. Mike
A few questions from a novice tube roller. I have a Manley Stingray II and have been playing around with the pre tubes.
1. Should amp be turned all the way off, or is stand by OK when changing tubes ?
2. Tubes that have paper labels glued on them ( Brimar CV 4033 ) OK ?
3. Can input tubes ( 12 at7's or the Brimar CV 4033's ) be substituted for the driver tubes...6414's ? I have read that 6414 can be substituted for 12 at7's but what about visa verse ?
I have use the Brimar CV 4033 in the 12 at7 input spot and enjoy the sound, so was wondering about it as a driver ?
4. What tube is more impact on the sound , input or driver ?
5. Ideas for rolling the 6414 as i do not see many around ?
Thank you. Mike