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In Reply to: RE: 250W IR Class D amp - with Mudorf M-Lytic Caps posted by samac on March 27, 2015 at 17:52:17
The tranni is 300VA @ 40-0-40. It will deliver 3.75A. It does look small against the massive caps. When I had the PS finished I powered it up to test it. But when I turned it off it did not discharge. So I got a 100ohm 10W resistor to discharge it. Instead of a spark I could draw out a long blue flame. And it made a fluttering sound. I have never seen anything like this before.
The caps have Sili-pads on the bottom to allow bolting to heatsinks. As I said I'm not sure if the caps are part of the sound but if music is playing and I turn the amp off it runs for about another 30seconds! The caps are very low ESR types.
| retro-thermionic |
Follow Ups:
Those caps are impressive. Looks like you've done a great job. Would love to do that myself someday. Enjoy!
I've built built three in a row in the last few months. So want any help or suggestions email me. Happy to help. With the modules being pre-assembled there is not much work involved.
At this point I would suggest the Sure 100W stereo module for AU$36 landed. Buy from Sure though. Cheap as chips (pun intended) and has a little warmth in the upper-mid low treble region. Good power but not unlimited.
| retro-thermionic |
Thank you for the offer. I may take you up on that someday. What kind of a pre amp are you running with it?
Thank you also for the suggestion of the Sure module. I wouldn't know where to start when it comes to picking out power modules.
Cheers,
Scott
Usually I run a single stage 6N7 (not 6SN7) preamp. This time a BoZ. It is a Pass designed single JFET preamp. Simple and will drive into low loads.
| retro-thermionic |
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