alexberger

Responses from alexberger

Acoustic Sounds Series
  https://youtu.be/0f-0RFnXje4 Shelly Manne & His Friends – My Fair Lady - "Get Me To The Church On Time"  
Acoustic Sounds Series
  Cannonball Adderley Quintet in Chicago - "Stars Fell On Alabama" https://youtu.be/usdGVUp3c10  
Acoustic Sounds Series
  https://youtu.be/LMoE6gH-MF4 Billie Holiday – Songs For Distingué Lovers - "One For My Baby"  
Resolving CD Transports Crowd Sourcing
Does anyone received the Schiit URD transport?  
300b lovers
Hi @atmasphere , How does excessive transformer ringing can influence on sound? Does it make it too sharp or bright?    
300b lovers
Hi @donsachs , Yes Dave Geren at Cinemag do great job! I use Hashimoto A-305 IT between 6f6 (driver) and 300B. The square wave was almost perfect at 10KHz, 20KHz, 30KHz. I use an 80K Ohm grid resistor on 300B. But I’m not sure this resistor is n... 
300b lovers
I have a technical question for tube gurus @lynn_olson @donsachs @atmasphere I put the intrastage transformer Hashimoto A-107 between the 6sn7 input and 6f6 driver tubes in my SET amplifier. The load resistor connected to the 6f6 grid was 520KOh... 
300b lovers
Hi @lynn_olson ​​​​@donsachs  What is changed in sound with the driver replacement from 6v6 to kt88? On the one hand kt88 is much more powerful and low output impedance tube. On the other hand 6v6 is more linear. Did you try kt66 that is more li... 
ALTEC MAGNIFICENTS.....MODIFICATIONS
Hi @autospec , You can use these link as crossover capacitors guide: https://www.humblehomemadehifi.com/Cap.html  
Amplifier Pairing with Coherent 15s
I heard Coherent 18 in Montreal show. They sound very easy and dynamic. In term of dynamics they more similar to old Altecs or Tannoy Silver and Gold from 50x-60x than to modern Tannoys.  Coherent 15 should work well with  Aric Audio Super 300B, ... 
300b lovers
Hi @lynn_olson , Thank you for the detailed lecture about tubes! Here is Shishido version with 300B. No DC on secondary of IT. 300B is in a regular cathode bias. http://www.vestnikara.spb.ru/vestn/n4/shishido1.gif What do you think about SRPP ... 
300b lovers
Hi @atmasphere , I meant that tube with less internal impedance with a transformer load with the same inductance has wider bandwidth in bass. I agree unfortunately 5687s OTOH.   
300b lovers
Here is an example of direct coupling: http://www.single-ended.com/Lagarto/shishido/811A.png Is 6f6 grid load easy enough for SRPP? ECC82 can be changed for 6sn7. What do you think about this schematic?  
300b lovers
Hi @donsachs , I have two questions about your new amplifier: 1. When you decided to go to an interstage transformer after the input stage, why did you stay with 6sn7 and didn't move to something like 5687? With 5687 you can get even wider band... 
Resolving CD Transports Crowd Sourcing
It is interesting how is a new Schiit Urd compared to Jay Audio, Teac VRDS 701T and Project RS2T transports.