roberjerman
Responses from roberjerman
| Does anyone care to ask an amplifier designer a technical question? My door is open. I have found more data on the 6N30 tube. Same pin-out as 6DJ8 and 6CG7. Plate dissipation 7 watts max. Plate voltage max at 250. Looks like the 6CG7/6FQ7 will work! | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Are the pin-outs identical? If so, then the 6CG7/6FQ7 would make a cheaper substitute for the pricey Russian tube! | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Is the Russian 6N30 (6H30) a copy of the 6CG7/6FQ7 dual-triode 9-pin base? I suspect it is! And not some secret "super" tube as claimed by ARC and others! Plate voltages and GM appear similar. | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM The Russian's have copied and used Western tubes since before WWII. The correct Western designation for the 6H30 is "6N30". Cyrillic " H" is the Western "N". I suspect that they are actually 6CG7/6FQ7's. Certainly the plate voltages (250) and GM a... | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM @facten : The 6N30 and the 6CG7/6FQ7 are both 9-pin bases. I haven't yet looked at basing diagrams so I can't say for certain that they are identical. I suspect they are! And the Russian tube is likely a copy of the 6CG7/6FQ7 type dual-triode. Not... | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM The Cyrillic "H" is actually "N" - and is pronounced that way! I can read and speak Russian! | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM I have done some research. Apparently the 6CG7/6FQ7 will work as a substitute. Same pin-outs, similar GM and capable of 250 volts/plate. Good quality US-made ones are available for a lot less than the pricey 6N30's (correct designation). I use the... | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM I don't know the tube complement the LS36.5 DM uses. Just thought I'd list the most common preamp tube types! | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM I have tried to give the OP some practical advice - and maybe save him from disaster! | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM Tube brands DO NOT have distinctive tonal qualities! The "golden ear" crowd can throw stones at me! For the record, I have been around tubes and tube gear from young (the Fifties)! | |
| Rectifier Tube Rolling in a Modwight LS 36.5DM @bdp24 Amen to that! Tubes do not possess some "magical" property that gives them a distinctive "sound"! An electronic circuit connected to a transducer (speaker or headphone) has a "sound". Not the individual parts! I expounded upon this topic a... | |
| Most well rounded LS3/5A-inspired speaker? Harbeth HLP3es was an earlier version of the above. | |
| Most well rounded LS3/5A-inspired speaker? Harbeth P3SR! Excellent midrange and a more extended bass and treble! | |
| Sound Quality of red book CDs vs.streaming Who knows the provenance (where they came from) of those streaming bits? What generation of the master tape (if at all) was used? That's why I'll stick with physical media (LPs,CDs,RTRs), thank you! | |
| Tubes with Infinity IRS Betas I recommend a new set of x-overs from dstechlabs.com (Fort Lauderdale, FL). |