jea48
Responses from jea48
| Tube biasing question please Soniqmike,You want to set the bias voltage per the manufacture's specs of the amp.Here is a good explanation by Herman.05-18-11: Herman"The bias sets the point where the tube idles. When you apply a music signal the amount of current increases and... | |
| Tube biasing question please Soniqmike,Just guessing tubes "A" probably were in the amp a few years and bias was reset a few times.Tubes "B" low hours and probably would test like new.It is a good idea when ever replacing power tubes, that have a fair amount of hours on them,... | |
| Annoying Hum SOLVED Al,It wasn't me back in 2003....Thanks for the kind words.Jim | |
| Ground Cheater plug or.... The hum remains even if the ICs are disconnected from the amp.GrimaceGrimace,I agree with everything Al said.I would add if the sound heard is truly a hum the problem could be a bad electrolytic cap/s in the power supply.An oscilloscope connected ... | |
| Dedicated Line for my home theatre newbie I did watch him install the wire and did notice when he went to hook up the wires to the panels he seemed to remove a lot of the yellow sheilding to allow for the copper ground to be hooked up.The outer yellow jacket is not a shield. It is just an... | |
| Help on Electronic Problem Unfortunately, a gas fitter is usually not equipped or experienced with electrical noise issues affecting audio gear. Really not an electrician's realm either. 03-23-12: NgjockeyAs a rule plumbers do not install fireplaces, a sheet metal worker do... | |
| Dedicated Line for my home theatre newbie I was thinking of Romex 10/2 wire but the electrician is saying that is too big for my panel and he suggests 12/2. Does this sound right?LOL, that's funny, LOL..... Too big for the panel.I would have at least 2 dedicated branch circuit lines insta... | |
| Help on Electronic Problem When it is about to have the fan go on, the static starts... often the static stops once the fan is on (though, not always).Sounds like the fan is controlled by a thermostat. Automatically turns on and off?I still think it is a faulty wiring issue... | |
| Help on Electronic Problem I would guess the fan motor is a Shaded Pole type motor. As a rule this type of motor would not cause the problem the OP is experiencing.At this point the OP needs to contribute more information...... | |
| Help on Electronic Problem Gas log fireplace?Full time pilot light? Or an electronic ignitor that lights the pilot? Are you sure the static is not being caused by an electronic ignitor? Can you light the fireplace and leave off the fan? If so try that first. No static, then... | |
| 20 amp power cords vs 15 amp power cords Sorry to complain but those posts above have all sorts of theory, and no practical advice for buying a damn power cord for your amp.03-19-12: ElizabethTheory? I gave the facts mam.... Just the facts....Speaking of facts an after market power cord ... | |
| 20 amp power cords vs 15 amp power cords As far as the ampacity difference between a 15 amp plug an a 20 amp plug there is no difference. Blade size and thickness are the same. Blade configuration is different.... A 15 amp plug will fit into a 15 amp or 20 amp receptacle.A 20 amp plug wi... | |
| AC Line Conditioners Disconnected the cable feed (from wall to power strip )and low hum still present in amp and CD player(sleep mode).Wrong cable.....Not the AC power cable..... Disconnect the RG6 coax signal cable, (that comes in from the CATV provider), from the At... | |
| 'New' power amp introduces ground loop hum - help? You have a difference of potential, voltage, between the CATV company's coax cable and the grounding system of your home.Get one of these.....http://www.cs1.net/products/jensen_transformers/VRD-1FF.htm. | |
| AC Line Conditioners These include a Plasma TV and At&T receiver,Good chance you are experiencing a ground loop hum caused by the cable feed to the At&t receiver. Disconnect the At&t cable from the receiver and take a listen for the hum.Jensen makes a good... |