jcbtubes
Responses from jcbtubes
| What is the most powerful SET tube amplifier? The Cary (and presumeably the Bel Canto) drive the output tube grid into class A2 which significantly increases grid current and distortion. However, it isn't intended to stay in this mode of operation except for extreme dynamic peaks. Normal oper... | |
| amp blowing up 123a- Most tube pres have relays that short the output connection to ground when powered down or during initial warmup. However, to be safe, it would be best to follow the standard power up/down sequence to avoid any surprising incidents. The soni... | |
| where does one buy leadshots for loading spkrs? Curtis- Checkout www.starsound.com. They have a product called Micro-Fill that is purported to be superior to standard fill materials. I've ordered some to fill an equipment stand. You might find it an interesting alternative as well. Good luck. | |
| Digital seperates, better than single player? MMoe- Unless you're considering extreme separates, I'd strongly recommend that you stay with a single player unit. The recent crop of CD players (Electrocompaniet, Audio Aero ...) are truly outstanding, and will compete directly with everything ex... | |
| phono stage volume Cford- As others have noted, just turn up the volume. The volume pot in the Hafler is rather inexpensive, so the higher the volume control position, the less it's in the signal path. I wouldn't recommend a stepup transformer or pre-preamp with you... | |
| Smoke coming from transformer means........anyone? Lolo- The transformer may still be good IF you powered it off in time and don't repeat the attempt until you have located the real problem. It is likely that the power supply caps have failed with age and are acting like resistors to ground rather... | |
| Anybody know where to get 845 tubes????? Chazzbo- The Sino 845 is fine as has been pointed out already. In a really tweaked system, there is really no comparison with good NOS 845 though. The Sino tubes sounds thin and harmonically lean compared to the United 845. In my system, there sim... | |
| Ever hear of Mu Metal for video shielding Subs? Check out Michael Percy Audio. He carries this I think.Good luck. | |
| My pre-amp overloads my amp 811- Sean is probably correct in his assumption that the offset voltage on one or both channels of the pre-amp is just high enough to trigger the protection circuit of the Citation. I'm not familiar with the CJ PF-R pre-amp. If it is capacitively ... | |
| The best POT you ever had Dis- I've yet to find a pot that I liked. I much prefer a ladder-type stepped attenuator which places only one resistor and two contacts in series with the signal at any position. The series type stepped attenuators are usually too much of a compr... | |
| Sistrum Platforms Davidlpk- If you reread Lonelynote's responses, you will see that he ended with his name in the body of the text of his second response, I believe. It is also extremely clear given the content of Lonelynote's first response that it is from the man... | |
| Convert Me Kirk- For every respondent you are likely to receive a slightly different tt combo suggestion. However, the great thing is that there has never been a better time to jump into analog. There is more choice at near reference levels than ever before.... | |
| Pre-Amp Power Supply Upgrade ???? Dnlyko- Increasing the storage capacitance can have a very positive effect. However, quality is of more importance than quantity once you've reached a design minimum of storage. Also, simply increasing the quantity without considering the rest of ... | |
| Sistrum Platforms Davidlpk- Upon rereading this thread, I've come to the opposite conclusion. Deeds of a year ago aside, the initial respondents are well known on this forum and should have raised no 'alarm'. Of the posts that seem questionable, Dm11 is not known t... | |
| ARC tubes Jack- Usually, old tubes become noisey and their sound can become dull and closed-in. However, I've had 12AX7 tubes that went thin and edgy as well as noisey. Tube rolling can be a great way to improve the sound of any system, and depending on the... |