alexberger

Responses from alexberger

300b lovers
Hi @charles1dad , I don't have practical experience. But theoretically 300B is winn-winn vs 845. 1. Output transformer has wider bandwidth. 2. Easy to drive. Driver tube and driver transformer. 3. Easy to build a high quality PS for 400v vs 10... 
300b lovers
The output transformer for 845 SET should be at least 10K Ohm. And it can't be as wide a bandwidth as a 3K output transformer for 300B. Another issue is that driving 845 tubes is much more difficult. A well designed 845 SET will always be inferio... 
300b lovers
Hi @lynn_olson ,   Thank you for very interesting information. Do you have any data high order distortion in 6F6 and 6V6 in a thiode mode? A friend of mine use 6BX7 double triode for driving. Is there any information about 6BX7? I heard 2 SET ... 
New Vinyl Jazz and Classical Reissues
Charles Mingus – The Clown - "Reincarnation Of A Lovebird" - Speakers Corner Records https://youtu.be/W5kHvi5CMhM  
New Vinyl Jazz and Classical Reissues
The Charlie Mingus Jazz Workshop – Pithecanthropus Erectus - Speakers Corner Records https://youtu.be/AwjkvFKBOYY  
New Vinyl Jazz and Classical Reissues
Charles Mingus – Oh Yeah - "Hog Callin' Blues" - Speakers Corner Records https://youtu.be/6ILqxUOQ9og  
Top two most important sound qualities
Tonality and ability to produce individual rhythm pattern of each instrument.   
Blue Note Tone Poet Series
Chet Baker – Sings And Plays With Bud Shank, Russ Freeman And Strings - "Someone To Watch Over Me" https://youtu.be/BCIP2nNmIZE "Let's Get Lost" https://youtu.be/dqYFXCqpTQo "Just Friends" https://youtu.be/Dezzwk3cUbM      
Blue Note Tone Poet Series
Gil Evans Orchestra – Great Jazz Standards - "Davenport Blues" https://youtu.be/9HJvYIMRHjQ  
Classical Vinyl Series
Jackie McLean – Destination... Out! - "Love And Hate" https://youtu.be/ox5mRov_gMs  
300b lovers
I heard that Sakuma used 300b driver tube for 300b. He always used transformer for coupling. To get 27 watts from the 300b push-pull it should be class AB.  
300b lovers
I have had a DIY 300B integrated stereo amplifier since 2006 built by one guy. But in all this long period of time I did dozents upgrade myself. The amplifier has 6sn7 input, 6f6 (in triode mode) driver and 300B. Cathode bias and C coupling betw... 
Modifying Crossovers
I used my Altec 604e with the original N-1500 crossover. After 10 years I bought an autotransformer DIY crossover from Germany. I liked it more than the original one. As I understand lately the schematics of this new crossover wasn’t good but bet... 
The 300B World
Hi @charles1dad , You are right. Small companies still produce SET friendly speakers. On Montreal Audio Show I saw Coherent Audio speakers that use Radian 18" coaxial drivers. They worked very good with 300B integrated SET. They also sound much ... 
The 300B World
It is sad, that most of famous producers that made tube and SET friendly speakers in the past like Tannoy (Silver, Red), JBL (model - L200. drivers - LE15, 2234) and now Klipsch build speakers and drivers that designed for transistor amplification...