johnsonwu
Responses from johnsonwu
| Warm Sounding Speakers Yes. Dump the Krell. | |
| CounterPoint SA3000 Repair Technician The high voltage is tube rectified (very robust) then goes to a solid state regulator that uses a 2N3439 (I have seen some units use 2N3440) pass element. That part is known to fail with years of use. May be wise to look at that (silver TO39 packa... | |
| ARC's new REF-75 Rather surprised to see an audio research UL PP amp work with bvdiman's accuton tweeters. I boldly assume bvdiman doesn't listen to violins much, or the listening room is extremely long. | |
| CounterPoint SA3000 Repair Technician I am in the sf bay area and can help. I rebuilt one and revived one with a missing transformer. Interesting project. | |
| ARC's new REF-75 The 30-35wpc amps I have can play almost everything other than Telarc 1812 to very convincing and satisfying volumes. Eagles hotel California, Roxy Music, Mahler 9, La Valse, and piano pieces played by Pollini (they cause under powered amps to wim... | |
| ARC's new REF-75 I somewhat concur with 213Cobra.I am using speakers of 90dB/W/m efficiency and I am driving them with 30-35W triode mode amps that started their lives as 100W UL or Pentodes (I mod them to triode and run them half-power)Anytime you parallel tubes ... | |
| ARC's new REF-75 @213Cobra: re: "sonically disastrous introduction of Krell circa 1980, which was a sharp turn in ego purchasing"Ironically that perfectly describes yours truly in the mid-late 90s. I had quite a bit of disposable income and churned through many ma... | |
| ARC's new REF-75 @213cobra, based on this list of your current gear apprently you savor space, delicacy, and texture over pace and the somehat glassy openness that is characteristic of the current generation Audio Research gear (in their stock form) that draws the... | |
| Counterpoint - Alta Vista - Mike Elliott I wish Dai all the best and hope he gets better. | |
| Counterpoint - Alta Vista - Mike Elliott Oh No!!! So sorry to hear that.Mike Elliott was one of the several people who sparked my interest in DIY and mods. I have learnt a lot from this eccentric genius over the years.I was also fortunate enough to meet many fellow audiophiles around the... | |
| Retubing an ARC VT100 mkll OregonPapa, you mean you can hear a big difference after you replace that regulator pass element 6550 in the PH8 and Ref 3 Preamp? How old was the 6550 that was replaced? | |
| Focal Electra Driver removal... Already in conversation with Dastrix.Problem is his crossover is well hidden, even more so than the woofer crossover board in the Diva Utopia. Dastrix has to access is from the woofer openings. | |
| Thoughts on Audio Research D70 yes and yes.6922 plate remains 75V as prescribed.I did not change the 1 1/2 6922s for each channel.Just REMOVED the first 6FQ7 and reconfigured the 2nd as common cathode.Note that in the orig circuit the 6922 with plate = 75V is directly coupled t... | |
| R.I.P. Dan Mazza If I recall correctly Dan was the gentleman I got an audio research faceplate from 12 years ago. A true gentleman. God bless his soul. | |
| Review: JM Labs Diva Utopia Be Speaker It's a combination of analysing the current components and figuring out what kind of short-cuts the orig. mfr took to minimize cost/size and whether/how they relate to the current shortcoming in the sound first, then validate that in your current ... |