donsachs
Responses from donsachs
| 300b lovers Absolutely. I read a great quote somewhere about a million years ago, that a great tube amp was the sum of three things. How good is the circuit? How good is the power supply? How good are the transformers? If you take care of all three of those t... | |
| 300b lovers The post from @pindac above is spot on. Most people think a 300b is a fuzzy rolled off tube. That is because they heard it in a single ended amp with a mediocre power supply, and most likely an inadequate driver section, and possibly mediocre ou... | |
| 300b lovers I will be there Friday and Saturday in the Spatial Audio Labs room. I will leave by mid day on Sunday because it is an 8 hour drive home for me. Of course I will tour the show, but I will spend a good deal of time in the Spatial Room on Friday a... | |
| 300b lovers HI It is really not my intent to get into detail here for something that is in prototyping. Yes, there have been many balanced tube preamp and amplifier circuits around for years, and I have absolutely no doubt you build an excellent balanced pr... | |
| 300b lovers HI My Pacific is XLR out with no volume control so have not tried direct to amps, but I build a really good preamp so I will continue to use it. The prototype preamp is essentially a circuit that was a thought experiment of Lynn’s for a fully bal... | |
| 300b lovers Hi all... Mark wrote and said he posted something so I thought I would chime in. The amps are push pull 300b monos and are 27 watts/ch. Not your flea watt 300b. It has been a really fun project with Lynn Olson. If you aren’t familiar with Lynn, ... | |
| Ordered a Willsenton R300 I just keep wait lists for what I build and you can email though the site. Only preamps and phonos now though. | |
| Ordered a Willsenton R300 Hi The 300b project is not a commercial product now. It may be next year in partnership with someone, but it is not my place to do business here at all. Not appropriate. I am sorry, but I stopped modding gear or working on vintage gear maybe 4... | |
| Ordered a Willsenton R300 Oh I am sure people can upgrade them. Still, the poorly designed driver section is a limiting factor, even with better signal path parts. It could be improved by either CCS or choke loading of the driver, which would make it much better able to ... | |
| Ordered a Willsenton R300 will also depend on their output caps. The photo showed what look like your typical $5 Chinese MKP caps with their fancy labeling. Klipsch used caps that looked like that in the Cornwall IV crossover. Changing them to something like a vcap od... | |
| Ordered a Willsenton R300 Depends on how they are doing the DHT filaments. I use regulated DC and they may well have DC filaments? | |
| Ordered a Willsenton R300 Hi It is a push pull amp comprised of 4 individual SETs, 2 per channel. Class A, zero feedback of any sort. There are a couple of little tricks beside that, but that is the basic topology. The OPTs combine the two out of phase halves of each... | |
| Ordered a Willsenton R300 Hi, Don Sachs here. First, this is not an attempt at advertising in any way. The amp whitestix refers to is now in the second prototype and there is no commercial product. If you see a 300b that uses a 6SN7 to drive the 300b it will sound o... | |
| Primaluna? I paid the shipping, box was thrown around by shipper who seriously damaged it. I brought amp back here at my expense and repaired all damage. Then you didn't want it back so I completely refunded all of your money. Amp has been out in the worl... | |
| Primaluna? Look, I don't really care what amps people like or buy. I do care when people say things that are not based in fact though. I have no comment on the PL amp because I have not heard one. I can however, look at the photos of the inside and see w... |