johnsonwu
Responses from johnsonwu
| Tube pre, SS amp incompatibility, which amp 2 use? Output caps are leaking DC if they pop when connected to SS amp. Change them out with high voltage rated ones like mundorf and you will have no problem. | |
| Counterpoint - Alta Vista - Mike Elliott Buy service manuals / schematics from Catherine Weber per the website. I bought mine. | |
| Focal Utopia Micro BE setup help If you are unsure then simply wire the speakers deliberately out of phase with one speaker having the + and - swapped. Listen to a mono recording and see if the sound is all over the room. | |
| Conrad Johnson Premier 140 6922 tube swapping OP I assume your unit is stock. Given its vintage I think money is much better spent on checking out the caps and resistors and tubes in the gain and driver stage before you risk any $ going into the hands of the too many scammers selling those so... | |
| Coconut Audio = LOL Any relation to machina dynamica or Dakiom? | |
| Counterpoint - Alta Vista - Mike Elliott Happily retired. | |
| Jm Lab Alto Utopia what kind of amplifier ? Try using a high end hybrid amp.A good friend has an AltaVista NP100 Platinum build driving his Altos.Does the beryllium tweeters justice and has enough current to deal with the flabby woofer. | |
| Capacitor log Mundorf Silver in Oil Granny ring beware that 1500uf usually means high esr.You don't need 4 caps in series unless you have 1200v B+.Best is just 4 470 to 560uf arranged in a square quad ie both series and parallel to yield a composite cap of 560uf 900v. | |
| Review: JM Labs Diva Utopia Be Speaker Nick Gowan is a scholar and a gentleman and I am about 15 miles away from him. As if he would like to do it. Maybe I can help chip in my 2 cents. | |
| Review: JM Labs Diva Utopia Be Speaker Do you have access to anyone who knows how to operate a soldering iron of 25w or more and knows how not to overheat a component? | |
| Review: JM Labs Diva Utopia Be Speaker Even simpler and cheaper go mod than the three way ones. It will take it to micro utopia level. | |
| Capacitor log Mundorf Silver in Oil The supply caps to the output stage NEEDS to be big, as big as the tranny and rectifier diodes can handle. A composite config of about 800V or higher tolerance is needed due to turn on spike.Hardly anyone uses film for the output stage.You need ab... | |
| Capacitor log Mundorf Silver in Oil Take a picture and email it to me. | |
| Capacitor log Mundorf Silver in Oil Grannyring, Lytics are not necessarily bad when they are used pre-regulation. I use Nichicon 400V audio grade caps in my amps for smoothing before regulation. Check mouser or digikey and see if your current caps are low ESR. If so they are good en... | |
| Capacitor log Mundorf Silver in Oil Nichicon caps are it bad caps at all and to me they sound better then Sprague atom any day.If they are before the regulator, as long as they are less than 10 years old I suggest you leave them alone.Post regulation bypass is a different story. Try... |