johnsonwu
Responses from johnsonwu
| Looking for brighter tubes the weak link in this amp are the coupling caps. don't waste money on tubes till you fix the caps followed by a power supply upgrade. | |
| TRL Dude or Joule 150 MKII for Major Pre Upgrade Acck! I now have to say hold everything cos I just looked at my NP220PG and the grid stops to the 6SN7 (also in diff amp config) is 100 Ohms. They are place after the grid leak which is 100k to ground.So if my NP100PG is so darn quiet and EM free ... | |
| Stereo and Fish tanks - noisy need help CFs are not as quiet as LEDs.CFs tend to make 12ax7 preamps hum.Find a Hagen or Aquatraders LED canopy.Cool and quiet. | |
| TRL Dude or Joule 150 MKII for Major Pre Upgrade All depends on how long that curcuit trace is from the RCA hot pin to pin1.If its less than 3 inches then a 1k grid stop in series ieUNSOLDER RCA hot and put 1k inline.SOLDER Socket-hot-->1k-->wire to grid@6sn7.But if its any longer then you... | |
| TRL Dude or Joule 150 MKII for Major Pre Upgrade Grannyring,I have no experience with the Bel Canto but when your passive lightspeed is set to vol = 0 can you measure zero ohms at the output RCA relative to ground, much like the shorting RCA jack you tested? If it's zero ohms then I see no reaso... | |
| Stereo and Fish tanks - noisy need help No air pumps, no overflow sumps, use an ehiem 2229 filter ONLY. | |
| TRL Dude or Joule 150 MKII for Major Pre Upgrade grid stop resistor on the 6SN7 of the AesthetixOR less likely...RCA connector on the Aesthetix shorted audio ground to chassis. | |
| Psvane Teflon capacitors real or fakes? U get what u pay for. If it seems good to be true then it is. Hong Kongers and Chinese have different definitions of ethical representation. Look at Mingda rudoeyconn caps :) | |
| VAC 30/30 & Sophia 6SN7's Only seen this with mismatched power tubes where no matter how you bias, if one tube doesnt match the gain characteristics of the rest it will cause hum.So, I highly suspected that your 6SN7s are matched at all.Never had this problem on my Phi70 m... | |
| Counterpoint SA20 If an altavista rebuild is beyond budget then a repair using Exicons or Toshiba 2SJ201 2SK1530 should not be that expensive. Other than some tricky procedure with replacing the relays the swap should be pretty easy on an SA20 (not the 220).A trann... | |
| Counterpoint SA20 One more note to the OP, CHeck to see if your SA20 has boards on each side next to the heatsinks. If so it's an SA220 (many SA20s were upgraded) which has the more sophisticated current detector which sadly does little to protect the mosfets.The S... | |
| Counterpoint SA20 I have had zero issues dealing with Michael Elliott at all.Purchased a few upgrades from him and he's an absolutely straightforward person to deal with. His estimated times of completions / schedules are very accurate.He may be temperamental at ti... | |
| Double blind test on Strads Likely all the violins in the dark room test are china-made fakes. The real deal Strads have been stolen and smuggled to some rich guy in China. | |
| Replace my Usher be718 ? Audiofeil are u referring to the many many Taiwan direct import specimens floating around or the ones with the better crossover aka the non-gray market imports?I have listened to both and they sound completely different from each other.I bet the u... | |
| Best integrated for $500? Used jolida 302 |