heyraz
Responses from heyraz
| Tube issues, 12at7 affect KT88? I agree with you about that line, which is another reason why I haven't bothered with the ST70 yet. No rush, I love the sound of my Aragon 2004, and only want to get a tube amp running well enough to see what all the fuss is about. | |
| Tube issues, 12at7 affect KT88? Curcio Audio Engineering has too many (well 3) options to go into on this thread. Basically, it's stick with the 7199's if you are restoring, an all triode model fully direct coupled, or all triode CCDA. Non of which makes any sense to me at this ... | |
| Preamp with tone control. Apt Holman preamp has some very flexible tone controls and an excellent phono section, renown in fact. A clear step above Hafler. | |
| Tube issues, 12at7 affect KT88? The Amp is stuffed away in the box so I'm really not sure what version it is, but if I'm reading into your message correctly, the DynaKIT is based on the DynaCO MKIII. Is that correct? I never realized there was a difference until now. The 7199's ... | |
| Tube issues, 12at7 affect KT88? Hifigeek1-Thanks. My ST-70 was kit built by someone else with no pride in his workmanship. I mean unbelievably messy in there. I plan to pretty much rip it back to the transformers and replace everything neatly. The only decisions I haven't made y... | |
| Amplifier heat depending on power cable? A quick google search revealed some known power supply issues with the Mark Levinson No 27 Power amp. (It's not my amp so I didn't read further). The first thing I would check is the current draw from each amplifier and again when the cables are s... | |
| Tube issues, 12at7 affect KT88? Check it out as I described. I'm interested to see if that caused your tube to run away. Someone recently gave me a dilapidated Dynaco ST70 that worked, though not well. The glass on the power tubes were separated from their bases but still functi... | |
| Tube issues, 12at7 affect KT88? DMM stands for Digital Multi Meter. Before the display's on the meters went digital, they were called VOMs (volt ohm meters).They are relatively inexpensive starting around $12.95 at Sears on sale. They measure volage, current, resistance and cont... | |
| Tube issues, 12at7 affect KT88? If you have a DMM, you might find a short or open on your suspect tube by comparing it to a known good tube. Look through the tube, see where the wires are going and check those pins for opens or shorts. I learned that trick from a friend last yea... | |
| Tube issues, 12at7 affect KT88? I'd pick up a decent tube tester from ebay. The price you'll pay will be about the price of ONE good tube, so it will pay for itself as soon as it catches the first bad tube. Plus, it helps take the guesswork out of the equation. I'm sorry, I don'... | |
| Tube issues, 12at7 affect KT88? Was the power tube's socket "stretched out" and not making good contact with all of the tube's pins? That's the first thing I would have checked. You should rule out the simple stuff first. | |
| phono preamp break-in machine Why risk anything? Can't a preamp burn itself in properly by itself over time, or do these "burn in devices" condition the preamp in a certain way? Personally, I have to believe that any reputable designer would have tested the prototypes after th... | |
| Pre-amp opinions: SAE vs. Hafler Primary source is turntable, at least that's where I get the most enjoyment from. I have a pretty decent Cd player (Adcom GCD-750) but it can't hold a candle to my turntable. I get a kick out of vinyl, especially when I find a used album for $1.99... | |
| Pre-amp opinions: SAE vs. Hafler Both tube and Solid State. I have a Grado Ph1 SS phono stage that I recently blew up. It's fixed now and currently I am swapping op-amps and bypass capacitors into it to improve it's sound. My current preamp is a (tube) Sound Valves VTP-101, which... | |
| Pre-amp opinions: SAE vs. Hafler http://www.angelfire.com/art2/stereorepair117/highend.htmHere's a site that does repairs. What I found interesting is that most equipment usually fails the same way, so these guys have listed many known issues. Take a look before you jump. Patienc... |