johnsonwu
Responses from johnsonwu
| Audio Research D70 mark1 + schematic TIP41 likely shorted out.Collector should be about 340 and the output to the B+ for the 6922 should be 304V ( in the D115)The D70 and D115 are hard to troubleshoot. | |
| primaluna gear, avalon eidolon speakers, cardas GLai there is indeed something special about the 0.8.Tried them when I had my old pair of Eidolons.Too bad I cant afford it, improvement doesnt justify the cost.Rather spend time tweaking the operating points of my electronics.Finally tamed my Ava... | |
| primaluna gear, avalon eidolon speakers, cardas Still using Cardas, per my Eidolon and Eidolon Diamond.I don't believe in wires at all....well that's an overstatement, I play with wires in moderation.Start with a baseline of Canare Starquad cheapies,if the system doesn't sound good and you abso... | |
| primaluna gear, avalon eidolon speakers, cardas The primaluna gear is outclassed by your speakers and cables.Consider a preamp with some voltage regulation, and a power amp with some gain stage regulation. Regulation is conducive to warmth and sound stage stability.The Chinese "classic" designs... | |
| MFA luminescence C Preamp There are schematics for the A2 floating around the Internet if you look hard enough.....actually found it... check email. | |
| Review: JM Labs Diva Utopia Be Speaker Hi Jazzao1, The coupling caps for the tweeter is a good start which will get you 70% of the way.Getting the lytic replaced with a Solen AXON 250V 180uF bypassed with a 2uF Mundorf silver oil will get you to 100% of where the mids and highs should ... | |
| Computer audio, I am not convinced yet ...... Try HQPlayer on the PC. Free trial. | |
| Review: Tube Research Labs Dude Tube preamp Does Paul still wire the volume pot to the output side? If so that might be the secret to why .22 works. | |
| Review: Tube Research Labs Dude Tube preamp Hmmm I recall seeing white Mundorf M-caps.0.22 sounds a tad low for the plate-driven 6SN7 outputs.Do you have a set of main output caps at a few uF in value? | |
| Review: Tube Research Labs Dude Tube preamp I recall the first Dudes have 47uF Mundorf white MCaps as output caps. What are you using now? | |
| Counterpoint SA-20 Amplifier agree. Output stage blew. Known problem with these units.Real SA20s are fixable with Exicons or Toshibas.SA220s.... other things on the bias / protection board are likely toast and impossible to fix.A lot of SA20s are actually SA220s.Check to see ... | |
| Best speaker that Proac ever made Owned 2, Heard 3, 3.5, D2.5, and 2.5. Liked 2.5 the most. | |
| Would u give up usher mini dancer 2 for b&w 802's Absolutely no for me. Though a bit nasal and bloated in the mid bass the ushers are drivable and has that very smooth yet transparent mid to extreme high. In comparison the 802 sounds very incoherent. | |
| Review: Tube Research Labs Dude Tube preamp Still using the Dude with Aesthetix Hybrid? | |
| Quad Esl 2905 reliability issues? Panel would be expensive. Try checking replacing the input bipolar lytic and the small 0.1uf cap somewhere midway between input and the panels. Sorry I forgot. Been too long. That fixed my 989. |