johnsonwu
Responses from johnsonwu
| 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... | |
| Review: Ming Da MC-2A3 Tube preamp I only had the CA906 for eval for a few days.The Ming Da after the mods is close but due to no NFB the bass is lean compared with something with NFB like the Canary.Also the Canary is very quiet compared to the Ming Da. | |
| Golden Tube Audio SE-40 bias problem Try the Golden tube users group on yahoo groups.A plethora of knowledge base and Very helpful people there. | |
| Review: Ming Da MC-2A3 Tube preamp This preamp, like my initial post, is not without controversy.Turns out the interesting 3-vertically-stacked triode follower configis so coincidentally 100% the same as the circuit described in Vacuum State's preamp cookbook, ie the one used in 1 ... | |
| Review: Ming Da MC-2A3 Tube preamp I know the importer will vehemently disagree but based on what I can tell from the exposed circuit in the photos the new 08 version simply changes the 2nd stage power supply filter caps before the regulator and never addressed post regulation bypa... | |
| Quad ESL Cap mods Thanks Mksj2 a lot for the detailed and insightful response. | |
| Quad ESL Cap mods Greetings, may I ask if anyone has tried Solen 220uF film caps bypassed with something, or perhaps those Obligato 100uF 500V caps?I'm running into a problem with my 989s recently and I suspect its protection behavior might be the reason why my pow... | |
| Upgraded Counterpoint Hybrid SA-220 Power Amps You might give the old SA20 a mod of just the 2 coupling caps from old WOndercaps to something like Jensen or Mundorf 0.47uF. I have an NP220 Premium gold and an SA20 which I rebuilt from a trashed unit. I now have 2 wonderful sounding hybrid amps... | |
| Canary 906 Pre amp Question take a picture of the LS box and I can tell you which one's which. Typical 2 stage gain + SRPP follower config. | |
| Canary preamp experiences? Check and see if the 601 has a choke AFTER regulation, as seen in many of their other preamps.I have owned a Canary CA801SE for exactly a year now and have tried out their CA906 for an eval.I happened to have briefly owned CA-301 (someone borrowed... | |
| Counterpoint SA 5000 vs Melos 333 reference I briefly owned an SA5000 recently and it was by far the quietest preamp I have ever owned. Have not heard the melos for more than 13 years so I cant really give an opinion.The line stage mosfet followers in the SA5000 can be bypassed (jumpers on ... |