jea48
Responses from jea48
| Which would be preferable, an older Audio Research Corp. VT130 or a newer SS Rotel 1552? Things to consider with the ARC VT130. Made in 1995. Has it ever been recapped? The amp requires tube biasing adjustments. (Power tubes as well as, I believe, the small signal tubes.) Do you have any experience biasing an early Audio Research VT... | |
| Synergistic Grounding Block and Tweaking it. I arrived late to the conversation, I will receive the passive device in a few days, I wanted to know if anyone tested connecting it to the negative pole of the speaker cable, at the end (connection to the speaker), if so, did you like the result... | |
| Help - static noise in speakers Any noise due to external factors would show up on both channels, my best guess of OP issue is failing cap, resistor, cold solder, either diy repair or return to manufacturer, let them diagnose, this all speculation at this point. Not really. ... | |
| Help - static noise in speakers IMO, it's not the tubes. If it was the tubes, switching the tubes from one channel to the other the static would have followed the bad tube. I also just plugged in headphones and I don't hear the static. IMO, that says the preamp section is ok... | |
| Help - static noise in speakers The static noise could be caused by a cold solder joint/connection. Or possibly a poor internal wiring connector connection. I did a quick look through the owner manual of the amp.... That amp is basically controlled by a computer. May not do a ... | |
| Help - static noise in speakers yogiboy said: 04-18-2025 at 03:51pm Swap the left and right tubes and see if the static moves to the other speaker! If it does you have a bad tube! Did you try swapping the left and right channel tubes? | |
| Help - static noise in speakers Could just be dirty signal tube pin to tube socket connections. Pull and reinsert signal tube(s) in tube socket a few times. The friction should clean the connections. | |
| Why whole house surge protectors are not enough If you talk to the folks at ZeroSurge, they will tell you that you need point of use rather than whole house because most surges are emanating from inside the house. It’s true most high voltage transient surges are created by induction motor lo... | |
| Directional wires/cables Video presentation, history timeline of events. The Hidden Story Behind Maxwell’s Equations It’s just wire... Is it? Galen Gareis, Engineer and Designer of Iconoclast Audios TIME… Galen Gareis . | |
| polishing pins of NOS tubes If that is what you mean, a small strip of metal cleaning/polishing cloth should work, followed by a cleaning with 91%+ alcohol. +1 If the tubes are small signal tubes, take care cleaning the pins if gold plated. FYI, I remember reading a thr... | |
| Power Cords/ Conditioner/Surge Protectors The surge was caused by a pole mounted transformed that exploded. it blew the top right off and it burned until the fire department put it out. @joshua43214 That was not a transient surge. That was high voltage overvoltage created by ... | |
| Power Cords/ Conditioner/Surge Protectors Nearly all surge suppressors use MOV’s. MOV’s fail silently with no warning. They go bad from repeated micro-surges. It is recommended by many that you replace your surge suppressors every year or 2 depending on where you live. I lost $14,00... | |
| Did I just cook my preamp? https://www.homedepot.com/b/Electrical-Electrical-Cords-Extension-Cords-GFCI-Plugs/GFCI-Outlets/N-5yc1vZcgerZ1z0p5yb FWIW. The OP can not take the chance of changing the wall outlet to a GFCI duplex outlet. No way... The OP could lose the pow... | |
| Did I just cook my preamp? @obarrett Here is a photo of an old 3 wire rubber/cloth covered wire, steel armored BX cable. https://i.sstatic.net/pvjp6.jpg I assume the outlet box that is now blanked off was the Hot 120Vac ground contact duplex receptacle outlet. I hope th... | |
| Did I just cook my preamp? @obarrett Said: One, there was actually only one wire feeding this outlet. The wire on the left side of the receptacle was connected to nothing. Not Quite... The wire broke when the electrician pulled the outlet and wire out of the box. Elec... |