gs5556
Responses from gs5556
| Krell 300S repair This is a tough one because it's a microcontroller, so I'm guessing it's a reset issue. If you know where the voltage regulators are located, test the output voltage (usually 5 or 12 volts, sometimes one each). The reset of the controller (Pin 1) ... | |
| Securing spade connectors Binding posts are not designed to support weight so there is a possibility those cables can cause the posts to come loose or even damage the speaker cabinet. You could point the spades down, wire tie the two cables above the post and loop down th... | |
| Thiel CS7 experiment Careful... those speakers drop to two ohms above 10Khz and stay below 4 ohms for most of the frequency range. Doubling the speakers on the amp terminal causes the amp to see half the CS7's load (1 ohm!!!) and can easily fry the tweeters on clippin... | |
| Single driver full range speakers A couple of things to consider: Adding a driver will affect the impedance loading on the amplifier, increasing or decreasing depending if wired in series or parallel. The published (or expected) frequency response of a speaker is different than... | |
| Amplifier Paradox…and more! But one should not have to understand the inner workings of amplifiers to begin with. There are so many amplifiers with so many different specs on the market that the only way to choose one is to ask a question: "Which amplifier do you recommend f... | |
| Ripple current Q for amp capacitors Did replacing the other caps eliminate the slight hum? If so, then the best advice is to leave the big caps alone. If it works, don't fix it. As far as which of the two caps to use: you'd have to do a little bit of research and see if both versio... | |
| Speaker crossover capacitor & inductors values: schematic & implementation? If you do replace that inductor with an air coil Jantzen, it will be the equivalent of a longer length of wire from the terminal to the first node of the tweeter crossover. That may or may not have an effect on HF roll off. When I spoke with a tec... | |
| Speaker crossover capacitor & inductors values: schematic & implementation? Electrolytic caps have relatively high ESR and wide tolerances. A good designer will calculate the ESR and the expected over (or under) capacitance into the crossover design. Any changes to ESR and capacitance may degrade the speaker performance.... | |
| Outlet is "Open Ground" - Is There Still a Safe Way to Connect to My Audio Gear? I assume that the receptacle is standard 3-prong and "Open Ground" was read from a plug in outlet tester. What you can do is remove the outlet and check the ground connections. Sometimes the grounding wire is wrapped around a screw on the box and... | |
| Speaker internal amp shutting off due to heat 80 degrees (or 27C) is about the rated ambient temperature for the active components in an amplifier so that in itself is not likely the issue. Amplifiers usually have a temperature sensing system comprised of heat sink thermostats and associated ... | |
| Quality answer to dangers of Tube amps running under no load I don't really agree with that explanation, it applies more to an ideal transformer. If there is no load on the secondary there is no magnetic field from the secondary current to reflect so the primary becomes one big inductor. An inductor's imped... | |
| Yamaha A-S801 no output It seems the CD output is not getting to the receiver. Try using the stock (or another pair of) RCA cables. Sometimes these expensive connectors fall short just enough not to make contact. Also give another look at where the RCA’s are plugged into... | |
| repair restore classe ca300 Try looking inside and see if there are any fuses and check them. A lot of amplifiers have rail fuses -- one for each negative and positive voltage rail -- to protect speakers against a transistor short. Usually, if only one side blows it results ... | |
| Weird crackling from speakers when preamp connected Are you using the RCA terminals on the Vega and the 275? (Just to confirm you are checking the same inputs and the XLR isn't bypassing an RCA input connection problem at the amp). Crackling can be a bad connection on the RCA ground. But if the pr... | |
| Do vacuum tube test values reflect sound quality? You really cannot tell anything about sound quality from test numbers. In fact, test numbers can be misleading. For example. if you test two tubes of the same type and one has a higher transconductance than the other, it is assumed that tube will ... |