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Showing content with the highest reputation on 01/10/2022 in all areas

  1. Hello, We made Bob aware of the controversy, from what will prove to be faulty measurement technics for the 275 on some forums by an individual. WRF (Wayne) having built and tested one of the amps in the original post has been great trying to educate. Bob gave me this letter as a response to post. I'll post it here and then ask Bob to answer any questions The Carver Site members may have first. We can/will repost the answers to your questions to the other sites. Not to sound bitter (because Bobs not) but I don't wish to draw clicks to their site. Better to draw attention here. Bob is busy designing a cool new amp called the 2180. 2x180 watts with 2-KT120 per channel. In most tube amps, the grid voltage is 1/2 the plate voltage. Bob has been working with a different voltage ratio between plate and grid with hand wound transformers. The prototype hand wound transformer made 200 watts driving one channel . The prototype factory production transformer should be ready for Bob and his assistant to test in 2 weeks.. I'll gather the questions on Mondays and give them to Bob for a reply.. Here's the note from Bob and his reply to a couple popular questions I had ask. Crimson/Raven 275 The current 275 is the best amplifier that I’ve ever designed. It is extremely powerful and it has a smooth and sweet musical voice. I have been building and designing amplifiers for approximately 50 years in my lifetime and in those 50 years I’ve been attacked and I’ve been vilified for my designs. My designs have also won many accolades and many awards and I’m very happy about that. Designing amplifiers has been my life’s passion and I cannot imagine doing anything that’s more fun or intellectually challenging or more rewarding. This amplifier has enormous power, an enormously wide frequency response and the best sound that I’ve ever been able to produce in my almost 30 years of amplifier design and building. I can remember walking on the pathways at the University of Washington with Tim De Paravicini and we had beautiful, beautiful talks about amplifiers, loudspeakers but mostly about amplifiers. Amplifiers were our passion. My amplifier knowledge today, when I compare it to my early knowledge, I find that my early knowledge was as scarce and meager kind. But no longer. This new amplifier design is my very best work. I have given it a voice that is large and a voice that has detailed imaging within the larger voice and it’s what I’ve always strived for. For now this is Bob Carver signing off. Thank you I invite any and all questions. So if anybody has a question or several questions, please just ask and I will answer. QUESTION: Bob, how can a 75 watt tube amp use such small output transformers and be lightweight ? ANSWER: I've always designed amplifiers that had lots of power and lighter weight than others designs. The transformer size can be made smaller by using fine wire and specified materials. There is no magic, because it adds inefficiencies in other ways like power, but the design has more than enough power. QUESTION: Bob, A guy is claiming a 275 makes 17 watts with strange distortion numbers any thoughts? ANSWER: Thats ridiculous, a 75 watt amp.. Isn't it obvious? It is being test wrong or its damaged.. My amps can be difficult to test, difficult to get the grounding correct. I've been dealing with people testing my designs wrong and getting grounding errors effecting measurements, most of my life. QUESTION: Bob is it fair to say that you design amplifiers for reproducing music into dynamic loudspeaker loads, more so than focusing on reproducing sine waves into load resistors? ANSWER: There is some truth to that. My amps can perform way above there power rating for a time, a time being several seconds. MORE QUESTIONS, ASK HERE.. The Carver Site is the place for answers. Have fun. Enjoy! Sincerely, Jim Clark.
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  2. He knows, Greg. Bob is focusing on designing new products and little else right now. He seldom looks at emails or phone calls. If he answered emails and phone calls, that would take all his time away from doing what he loves. Personally, I spend little time on forums. A cup of coffee in the morning and thats about it. Bob sent me his reply in a voice mail and asked me to transcribe it and post it. So that is why I'm here relaying his message. Whatever I can do to help him from being distracted, so he can stay in his creative mindset, enjoying his days, I will do at his request. Humbly, its an honor, but not one that I enjoy. Thanks for letting me post the reply here. Your site is largest of the Carver themed site so maybe the controversy can bring in more members and clicks. Most times, these "bad" moments have good hiding in them.
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  4. Bob has an account here. Just FYI. He may need to be reminded!
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