johnsonwu
Responses from johnsonwu
| Sonic Frontiers - A Score or a Flushing? Awful sounding amp in stock form.Beautiful amp if you know how to convert it to triode.Best of the best workmanship except for a lousy designwhich necessitates sacrificial resistors when a tube starts to runaway (READ: aging 6500C tubes)it will fr... | |
| Need opinion on other tube amps then Jolida to buy Get a used 302B and get someone competent to change out the rectifier diodes, the 1st stage filter caps to Panasonic or Nichicon, 2nd and 3rd stage to Solen or VALAB, then coupling caps to Russian FT-3 0.22uF, then ultimately switch to triode mode... | |
| Focal Utopia monitors: Diablo vs. Micro Be Instead of spending thousands for an speaker change, I suggest you consider a $150-$200 cap upgrade for the tweeters.The stock Solen PPA found inside the Micro Be is a $1.5 cap that's nothing compared to the better ones out there like Jensen, Mund... | |
| Warming up the ARC LS2B Change out the diodes to Hexfreds or Schottkys.Change the coupling caps to something that has oil like Jensens. If you are driving one one power amp of input impedance 100kOhms or higher, disable the FET follower stage.The LS2B is not known for wa... | |
| Review: Sonic Frontiers SFCD-1 CD Player Over the past several years I have collected 2 SF-CD1s and went through numerous laser heads. Whenever they act up, one will not read anything (NO DISC)and the other one reads intermittently and absolutely will not read any copied CD-Rs.A unit wit... | |
| Quad ESL Cap mods Good for you then cos I had to change out Duelunds on my friend's JMLab Micro Utopia in favor of Mills MRA12s. The Duelunds caused a major saturation in the sound when overdriven. | |
| Review: JM Labs Diva Utopia Be Speaker Ahhh Quad ESL63, same circuit as my 989 with 1 less bass panel. I am selling my 989s now so go figure how good I have made the Divas. Look at my listing and you will see what I did to it. | |
| Review: JM Labs Diva Utopia Be Speaker It's not a lot of work.NOthing at all compared to modding a Ming Da MC-2A3 preamp.Just 2 V-Cap OIMPs and 2 Solen 220uF 250Vs.The Solens are hard to install, creative tie-wrapping required due to size. Once figured out the mod for the pair can be d... | |
| Quad ESL Cap mods Hi Terry9, did you end up doubling up the Duelund resistors to match the orig. power rating? My experience with Duelunds are outside of Quad mods but were you able to fine 20W+ Duelunds for the job or was your mod only for the input R and C before... | |
| JM Lab Diva Utopia problem - need help I have a review of Diva Utopia's posted here on Audiogon just now. | |
| Quad ESL Cap mods It's been almost a year since I applied a duct-tape fix to the 989 by using Nichicon bipolars (I thought they'd be better than the orig. Bendix) bypassed with a film cap.The fix only marginally improved the threshold before protection kicks in and... | |
| Quad 988 mod review I did a similar upgrade myself to repair my 989s whch have become very senstive to treble transients (it shuts down)I ended up having to replace the evil bendix lytic with film caps, bypassing the FS2, upgrading the input R to Mills 12W 1.5 Ohm, t... | |
| A. Eidolon v. JM Lab Utopia I've had Eidolons for the past 10 years now and a good buddy of mine whom I swap gear with has ALto Utopioa Be's.Fast bass, midrange presence and palpability... Eidolon.Silky highs, buttoned down comfy sound, and bass extension... Alto.You need to... | |
| Need manual for Golden Tube SI50 MkII Thanks a lot SD58. | |
| Review: Ming Da MC-2A3 Tube preamp The 801SE is unbearable compared to a modified Ming Da.Got to the point where I had to convert it to an AIkido Octal using just the transformers, the chokes (1 pair only).I also found that the regulator in the 801SE is not implemented right at all... |