gs5556
Responses from gs5556
| Main vs. sub panel for dedicated lines How far away from the main panel is the listening room and the two bedrooms and bathroom? The only reasons for a subpanel is to limit the voltage drop over long distances, or to group together outlets in a common area so as not to overstuff the ma... | |
| What’s the relationship between gain (dB) and power (watts)? That gain switch is like a gas pedal. If the driver has a strong foot, then the pedal is set to 23 to take into account the heavier push to get full power. However, a driver with a weaker foot will set the gas pedal to 29, making it easier to push... | |
| Fuse Upgrade to Ceramic not glass If the fuse access is not visible then it is inside the unit and it could be in a clip holder, which you can pop out and change, or it can be soldered in, which makes it more difficult to change. The only way to tell other than opening the hood is... | |
| How to find the min and max bending radius of a cable. Substituting the OD of the cable into the second equation:5 x 10.2/3 x 10.2 = 173mm minimum bend radius.Am I missing what you’re asking? | |
| Uber expensive repair at United Radio You weren't singled out for a rip off, audio repair is expensive. From first hand experience, I know it takes a lot of time to take things apart to replace a defective component and an untold amount of time to figure out the problem without a sche... | |
| Capacitor There's no easy answer. According to the laws of physics, the best cap is the one with a value closest to 100uF, (a twenty nine cent 101uF cap should in theory perform better than a one hundred dollar 110uF cap, both 100u nominal). However, consid... | |
| Test and repair amp Pyramid Audio down in Austin. Ask for Chris. | |
| Preamp/interconnects cause amp problems? Popping sound in the speakers is dc. The amp either has a transistor problem, which is easy to find, or a short at the output caused by a wire or component fault, which is difficult to find. Could be carelessness in manufacturing in which case it’... | |
| Is it safe to use a higher amperage rating fuse? If fuses are not manufactured correctly they will trip when they’re not supposed to. It’s no surprise the boutique fuse salesmen do not provide time current curves or melting energy. Going up in fuse sizes increases the probability of excessive he... | |
| How far over the limit can I go Have the same set of tubes in my CAT preamp since 2016, about 10,000 hrs. Still going strong. (Mullard 12AX7 reissue, Reflektor 6922). The answer is they could fail tomorrow or not. | |
| Detecting “Dirty” Power Start at step one: lift the ground of the amp by using a two prong cheater plug. If the hum goes away then it’s a ground loop. | |
| I am getting some new tubes for my amp, and I want to do a 24-hour burn in. How? Playing a signal through the tube for twenty minutes will do a lot more than running it idle for 24 hours. Just turn on the amp and play music. | |
| Need help with a 6AS7 Headphone Amp Measure the voltage from circuit ground to earth. If it’s only a few tens of millivolts put a 10 ohm resistor in parallel with a 0.63 uF film cap between circuit ground and earth to lift ground a few volts. That may help. | |
| Onkyo P-308 recapping/upgrading If it works, leave it alone.Kudos to that repair shop. | |
| Current... Yes.I = sqrt(300/8) x 2I = sqrt(490/4) x 2 |