jea48
Responses from jea48
| Audiophile Grade Wall Receptacle For those of you that maybe considering buying a spec grade or better Hubbell duplex receptacle you need to do your homework before buying. About 10 to 15 years or so ago Hubbell starting changing and adding a cheaper line to their product. Exampl... | |
| Power Cables and Wall Sockets If the OP’s power amplifier’s power supply was not heavily over regulated, and maybe even then, the circuit that feeds the amp is staving the amp of power when playing high dynamic music material. The dimming lights is proof of that. The AC mains ... | |
| Power Cables and Wall Sockets holmz 1,029 posts 04-01-2022 at 06:36am If you amp is causing lights to dim you have an extreme power problem. If the lights are dimming significantly, the circuit is overloaded, the breaker should be tripping. The circuit is ... | |
| Burning in question Burning in question I bought an NAD M33 for a system in a 2nd home. I want to run it in before installing and these amps are notorious for needing a lot of time before sounding as designed. For burn-in you need current traveling through ... | |
| Squeaking/Paper Crinkling Noise Coming from Lamm LL2.1 Could be a cold solder joint. Could be a dirty corroded tube socket female contact(s). Coupled with poor contact pressure between tube socket female contact(s) to male tube pin(s). | |
| One or two dedicated AC wire ? All three 20amp, 10 gauge Romex, and all three dedicated ground wire to new grounding rod, Absolutely worthless and dangerous if the EGC (Equipment Grounding Conductors) are not also connected to the equipment ground bus bar in the electrica... | |
| Intermittent low hum/buzz @bikeboy52 , It could be a signal tube with dirty and or corroded tube pin(s) to tube socket contact(s) connection(s). Pull each signal tube then plug it back in repeating the process a few times. This will clean the tube pins to tube socket cont... | |
| Dedicated Circuits - Subpanel importance? My son just completed the first phase of his residential electrical education @vinylvalet He should use that as a starting point and then try to move to the commercial and industrial electrical wiring industry. That's where the money's at. I ... | |
| Thorens TD 160 "pop" revisited Apparently, if left uncorrected it will eventually fry the contacts. Or worse, damage electronic equipment. We would like to think that the AC or DC power supplies we use to power our circuits are both clean and well-regulated supplies. Howev... | |
| Transformer question--need transformer that puts out nominal 240V for European Amplifier No, I reversed the hot and neutral conductor polarity. Yep- and that would be like flipping the phase polarity on the 240v (which is +/- 120v) Not really. Reversed receptacle polarity is where the HOT branch circuit conductor is connected... | |
| Transformer question--need transformer that puts out nominal 240V for European Amplifier Plugged the power cord into the wall outlet and checked the 240V output. Hot contact on 240V receptacle to equipment ground, 120V. Neutral contact on 240V receptacle to equipment ground 120V you only changed the polarity 180 degrees by flipp... | |
| Thorens TD 160 "pop" revisited A resistor should be wired in series with the capacitor. “Snubber” Circuit A sudden rise in voltage across the switch contact caused by the contact opening will be tempered by the capacitor’s charging action (the capacitor opposing the incre... | |
| Thorens TD 160 "pop" revisited As a rule turn on, (closure of the ON/OFF switch contacts), does not cause a high voltage transient. Opening the switch contact, (creating an arc), causes the voltage transient. To protect all the audio electronic equipment from the high voltage ... | |
| Thorens TD 160 "pop" revisited A couple of snubber circuits to use. Both circuits are wired in parallel with the switch contacts First is to wire a capacitor and resistor in series and install the two across the switch contact terminals. https://www.allaboutcircuits.com/tex... | |
| Did electrician set up my dedicated subpanel correctly? @battbot The four 20A branch circuit breakers are installed on both Lines, legs. Two on L1 and two on L2. What is the main 2 pole breaker ampere rating? I can’t read the number on the breaker handle. Any idea the size of the feeder wires fee... |