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In the Forum: Melquiades Amplifier
In the Thread: Milq: Starting the project
Post Subject: Re: quotations, leads to source, the caps....Posted by Antonio J. on: 11/3/2005
Hi Romy,
Probably my evaluation methods are still quite moronic, but I think I'm learning to listen to what matters in the music. I had some experiences with a friend using several caps in a preamp he built, and also in the integrated I'm using. I understand for "neutral" something that doesn't take your attention to "the sounds" and just allow you to focus in the meaning of the music, the interpretation, the musical details of the performance... the things that my inner I loves doing at a concert hall. I don't go there to listen the beauty of timbre of the violins or how the bass spreads along the hall. I suppose you get what I mean.
Those Mundorfs are good, they don't enhance anything, just don't add garbage and let the music flow compared to any other "boutique" cap we tried, which usually add "detail" or "air", "spaciousness", "bass depth" and that kind of audiophile-sounds-stuff. They're MKP covered with a fine layer of silver and all embedded in oil (of course it's not the electrolitic ones). The builder advices them because he can get them at a much better price than "average Joe", more or less the same price than other good industrial grade caps, but in his opinion are way more reliable made to match very tight tolerances and last a lifetime. In any case he's willing to do whatever I decide.
Regarding the C2 thing, He said that I misunderstood his proposal, what he says is using five double 200uF+200uF cans (400 uF each cap), which are rated for 500V (not 200 as I misunderstood) to get the 2000uF needed for C2, but having lower ESR and ESL than using a single 2000uF/450 or 500V cap. I'll do whatever you advice, using smaller caps paralleled to get a certain value has some advantages compared to using a single one, but this might have other advantages that you'll probably know better. He says the cost of a single big cap is higher than using his solution, but again he'll do what I (you) say. The same goes for C10, he would use three 200+200 (400uF/500V) to get the 1200uF/450V needed.
I think we'd need some supplier to find the VR1 trimmer and some of the other resistors. As I said, he can use some low inductance ones instead of the Vishays to keep the budget low, but he can't find all the values, being the most difficult the trimmer.
Regarding the delay timer, he says that using the Magnecraft pre-built timer is overkill at 120 USD and he can design and build an equally suitable circuit for way less money. I suppose he's skilled to do that.
Well, let's see how much is it going to be, I hope it's something I can afford ;-) Certainly the Lamm's where way too expensive for me hahahaha.
Thanks a lot Romy, this is being quite funny and we didn't yet started. Regards,
AntonioRerurn to Romy the Cat's Site