Quote: Originally Posted by rhodes54 LOL, The thing is that the TX2575's are the opposite of coloured, they are (almost) totally uncoloured! Now you can finally hear what the average resistor does with the sound. :-) With all the praise about TX2575s it is time for me open my...

Quote: Originally Posted by PatOMalley Any one know how to safely hookup the transformer for output sans the output caps?[/COLOR][/B] Bill, thinking about this out loud, wouldn't the topology be similar to the input pulse xfrmr section? That is 180R (iv) across the...

Quote: Originally Posted by PatOMalley She also says you can use both to show off your stereo with. Great kid. I bet your kid will one day also keep your DAC too. Smart Kid

Quote: Originally Posted by mr.onion hifi2001, since you have my stock chameleon dac do you care to talk about how far you've gone in terms of sound quality with the mods you've done on yours, and give your analysis of big change mods vs smaller ones? and wonder if you've had a chance...

Quote: Originally Posted by MikeW Yeah, I think im hearing the dac noise, however it still does not explain why it is dramatically cut when I remove the Reclocker board. Should I experiment with putting more resistance at that position? Am I not understanding something, pat said he made...

Quote: Originally Posted by MikeW yeah, I saw that, it looks like he put a couple 2k resistors on there. But I don't know what value his original SMD resistors are. It looks like 680 is the correct value? It's confusing. There's another set of resistors above these, that are also...

Quote: Originally Posted by MikeW Looks like the source of my noise, is the Reclocker board. I pulled the board, set the jumpers and the noise dropped dramatically. To bad it does not sound nearly as good without it. Wonder if there is something wrong with mine. Please check the...

Quote: Originally Posted by MikeW edit: can it be just one little dac chip making so much noise? I didn't believe it until I heard it myself. I recall asking Michael in the past which section on the DAC board he had the most problem with during manufacture and he said the yield...

Quote: Originally Posted by MikeW I thought alot of people replaced the Digital Decoupling caps in the old Valab.. the little blue polymer caps all over the digital board. I thought this was the same thing. Looks like i got bigger problems though with this ac all over the place. Wonder...

Quote: Originally Posted by Bill Allen Norm- interesting results however I notice you don't have the 47uf FK Blackgates on the DAC chips. Do this then the FRM will do its job. Understand everything we do to the DAC chip power supply will directly change the sound at the analog output...

Tried Tony's FRM (Film Reservoir Mod) Friday night and yes it did bring out the liveliness from the Chamelon, BUT, I later noticed I lost some bottom end from the DAC which mine system doesn't have tons of bass to begin with... so out FRM comes and my bottom end came back! Then it occurred to...

Quote: Originally Posted by Wood Good point. I will check with the meter. That cap is doing something though, perhaps the trace goes to the other side of the board. Might me a good idea to check with teradak , cos its an important cap sq wise. I was busy in the last few days not...

Quote: Originally Posted by Bill Allen Hey guys please try a simple experiment for me -: Lift one leg from each of he 2 large brown .01uf Chiclet looking caps on the DAC board, take a listen and tell me what you think. Mine is off as well. As mentioned, it does open up music...

Quote: Originally Posted by MikeW the little green capacitor looks like it should be attached to a leg of the pulse transformer, but im afraid to attach it without confirmation. Edit: nevermind, my green cap looks exactly like the one in Pat's "keeping up with the jones" post on page...

Quote: Originally Posted by MikeW I do notice more Hiss on this chameleon then my old valab had. Im hoping it clears up a little with break in. In my 2.1 I get hiss but not until the volume is up to unlistenable levels. I can hear it more easily on Chameleon, at loud but not crazy...

Quote: Originally Posted by rhodes54 I also got my Chameleon today (after being stuck at the customs for 14 days) and it's playing perfectly. Can't give any Judgement yet as I'm listening at work through small speakers. There is a slight problem with mine though: I have got a hum in...

Quote: Originally Posted by MikeW I should have mine in a few days. Will be nice to tear into it. Im getting into DIY alot more now, I recently built a Cmoy, and Recabled my headphones. My soldering skill has greatly improved, and im thinking of tackling SMD soldering soon. I've also...

Quote: Originally Posted by marcelnl well I'd change them, as the voltage regulator can easily handle the amount of current needed....it is just that the 12V AC wire can deliver more current. marcelnl, you do have a point... Since I haven't had time to fully understand the PSU...

Quote: Originally Posted by Wood Apparantly those resistors are rated at only .24w do you think its necessary to swap them out? Wood, I wouldn't replace those 0.25W resistors for something higher... remember that we are in uncharttered territory here... thiink of those resistors...

So in the course of last 15 hours or so I see there was a flurry of activities on this post and too bad I missed all that excitment... I just got caught up now. Here is my comment on some fo things that was asked. - After A/B DC-30W blue vs yellow wire mod the best way to describe it is like...

Quote: Originally Posted by jjlucas76 Hi Everyone, after almost one year of reading, collecting and choosing the right part. I have settled on a new variant of the valab v2.1 I want to share with you the "achievement" if so can be called to have improved drastically the...

Quote: Originally Posted by Bill Allen Marcelnl - My math show's around 1 amp required for just the 16 DAC chips and yes at least 1 amp for headroom is minimum in my book too. However for us solder heads he suggests as long as we keep the case cool there should be no long term...

Quote: Originally Posted by marcelnl I wonder if Michael would be willing to sell the board with the essential electronics only (w/o the PSU, and caps resistors etc) for folks that want to one step further than modding the heck out of the complete thing.....anything shy of designing my...

Quote: Originally Posted by Bill Allen However I am keeping a close eye on those little blue resistors in questions. So far no discoloration or signs of overheating. Bill, do you have access to an Infrared gun? I'm certain it will tell you if those resistors are under stress...

Quote: Originally Posted by Wood The immediate difference I noticed when I switched back to Texas was that the PRP have so much more contrast. They are blacker and much more defined/detailed/crisp across the whole spectrum. Wood, just curious, what equipment do you have...