jea48
Responses from jea48
| Preamp 6922 tube help Early to middle 1960s Amperex 6922 PQ white label USA made. Also the 7308 PQ white label USA made from the same years. Joe’s Tube Lore https://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html#6DJ8Brent Jesseehttp://www.audiotubes.com/au... | |
| I know my tubes (VT100 mkII) are going when... Mark, Note the tubes in the LS25 are only good for around 4000 hours. I wonder what the average life expectancy hours are for the 6922 tubes in the VT 100 MK2? | |
| I know my tubes (VT100 mkII) are going when... 3. Do I need to adjust bias in the LS25 as well? No.LS25http://www.audioresearch.com/ContentsFiles/LS25LS25II_Manual.pdfhttp://www.audioresearch.com/en-us/download | |
| I know my tubes (VT100 mkII) are going when... If I want to practice the connections with the two multimeters and agitator clips in a dry run with no power in the amp, how do I ensure that there is no energy in the amplifier? Should I have music playing and then turn off the power amp so ... | |
| I know my tubes (VT100 mkII) are going when... Mark,I would plug the VT100 amp directly into the wall outlet, jmo..... I do not have any experience or knowledge with regards to the use of KT120 power tubes in the VT100 MK2.You might want to contact ARC service at the factory in Minnesota.I fou... | |
| I know my tubes (VT100 mkII) are going when... Power tubes are usually good on average for 1500 to 2000 hrs.Life of small 6922 signal tubes can vary but can last as many as 10,000 hours. Though not that high on new production tubes made today.Replacing the power tubes is fairly simple. Just fo... | |
| Directionality of wire herman 1,946 posts08-06-2017 12:42pm about thisThe speaker transducer moves forward and backward according to EMF acting on the voice coil - see Faraday’s law and Maxwells equations - so both... | |
| Directionality of wire @geofkkait,Quote from Ralph Morrison The laws I want to talk about are the basic laws of electricity. I'm notreferring to circuit theory laws as described by Kirchhoff or Ohm but thelaws governing the electric and magnetic fields. These fields are... | |
| Directionality of wire herman,Thank you for the response. shadorne5,793 posts08-01-2017 1:22pm@jea48 The speaker transducer moves forward and backward according to EMF acting on the voice coil - see Faraday’s law and Maxwells equations - so both +ve and -ve current d... | |
| Dedicated Line Noise Filter? Thanks Bill (whart), and lowrider57, for the kind words.Jim | |
| Dedicated Line Noise Filter? cleeds said: That your contractor didn't know this - and didn't insist on applying for the required electrical construction permit - raises questions about his competency, and whether he's even licensed to perform this work. I would be willing ... | |
| Dedicated Line Noise Filter? lak,Thanks for the kind words.Jim | |
| Dedicated Line Noise Filter? @lowrider57,On second thought, if you see the green bonding screw on the neutral bar or a bonding strap connected to the neutral bar that is connected to the metal enclosure, do not remove it. Post back what you find. Do not change anything in the... | |
| Dedicated Line Noise Filter? almarg 7,350 posts07-15-2017 1:27pmThe sub-panel is connected by the hot lead and has it’s own ground including a second grounding rod. Lowrider, my understanding is that a sub-panel should have hot, neutral, and safety ground all wired back to t... | |
| Does my laptop need to be grounded when charging? I have noticed that when I am barefoot and gently rub my finger over the metal surfaces of the laptop that I feel a slight fuzziness as if there is stray voltage going through me. It is not a shock per se and the sensation goes away when the char... |