rodman99999
Responses from rodman99999
| 12at7 with 12ax7 tubes The 12AT7 is interchangable with the 12AX7, but has slightly more than 30% less gain. ergo: You will have to turn the volume a bit higher to get the same SPL from your system. | |
| Tube flash As Hifi mentioned: most testers do not apply full operating voltages(B+) to the tube being tested. Tubes, under actual operating conditions, will occasionally either short, draw high screen current or open a connection internally. In the event of ... | |
| Synergistic Research IC Active Shielding Mr Sorlowski: The power supply/voltage to the shield is completely isolated from the actual conductor of the IC. The characteristics of the signal conducted by the interconnect are the same whether the component(phono, pre or power amp) is operati... | |
| Did I lose a tube? Hopefully, It'll be that simple. Happy listening! | |
| Did I lose a tube? Yes, it DOES! Swap all the tubes(channel to channel) and see if the, "thinness" changes channels too. If so- swap one pair at a time, and that will indicate which one is weak. It'll require a lot of turning off and on, but will save you the cost o... | |
| Friends, who has headphones with the 1/4" maleplug Any headphones designed for studio/Pro use(ie: Audio-Technica, Sennheiser, Denon, Sony, MB Quart). | |
| Tube Break-In sound character change Though this article regards the actual 300B; you'll probably find the info on burn-in helpful: (http://www.stereophile.com/features/229/index2.html) | |
| High Quality Fuses: Real Gains? Hi-Fi Tuning fuses are not intended for speaker protection, but rather as an upgrade for AC power supply, or B+/rail voltages(though they MAY provide some audible differences in speaker apps). Best place to begin experimentation is the AC mains fu... | |
| Upgrading wall outlets As you have now realized, based on ACTUALLY TRYING THE UPGRADES YOURSELF, and on your own AURAL ACUITY; improvements to your power supply(whether internal to the components, or to your AC source) can yield obvious and audible benefits. KUDOS for i... | |
| What companies, out of Business, did you LOVE??? California Audio Labs(Had a couple Icons, then an Alpha/Delta combo), Dynaco(David Hafler and his tube designs/kits were excellent learning/teaching tools), Acoustat(Wish I still had my Model III's, and the room in which they resided. Wonder how t... | |
| High Quality Fuses: Real Gains? Some previous dicussions on the same topic: (http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1267760833&openmine&zzRodman99999&4&5#Rodman99999) (http://forum.audiogon.com/cgi-bin/fr.pl?htech&1246453097&openmine&zzRodm... | |
| Uber quiet tubes for C2300 pre I've only purchased power tubes from Upscale(NOS and new production, over the past 12 years), and have had nothing but good experiences and performance. Never small signal tubes, so- no comment there. I HAVE BEEN purchasing NOS small signal tubes(... | |
| Replace RCA connectors WBT manufactures RCA jacks for chassis and PCB mounting, that make installation in MOST gear a breeze. Been there, done that, numerous times. There ARE pieces of equipment out there that are exceptions, however. Definitely open your chassis and co... | |
| Uber quiet tubes for C2300 pre Some facts on subbing the 5751 for the 12AX7: (http://www.upscaleaudio.com/GE-5751_p_47.html) (http://thetubestore.com/gainfactor.html) NOTE: What is said about changing the sound of a guitar amp will also apply to an audio circuit. Bottom line: I... | |
| Uber quiet tubes for C2300 pre The last time I bought anything upper crust from the 12AX7 family, in a Tele or Siemens, I got them from a seller in west Germany. He had his own website then, and I dealt with him a few times. Now he sells on eBay as 'audiotubes_de'. Very reliabl... |