Jump to content

richieb

Heritage Members
 View Profile  See their activity

  • Posts

    7244

  • Joined

  • Last visited

  • Days Won

    3

 Content Type 

Posts posted by richieb

    High Power SET?

    in Talkin' Tubes

    Posted

    1 hour ago, henry4841 said:

    My first thought was the F3 is a 2 stage but after looking at the schematic you are right single stage from what I see. It has been years since I built that amplifier. I still have the boards but used the case and PS section for another FW project. Nelson is big on less is better, fewer parts. The F3 is similar to the J2 and F8 in that they all use power J-fets. 

    I also had the J2 but let it go.  I’ve owned the F3 longer than any amp I’ve owned.  They are very similar although the J was bit more powerful , 25 vs 15 for the F.  

    High Power SET?

    in Talkin' Tubes

    Posted

    1 hour ago, Marvel said:

    Here is a schematic for parallel 6c33 tubes. A single channel with 3 tube... I don't know if it's for audio or heating your house.

     

     

     

     

    url(1).jpg

    Good find Marvel. And yes, it does keep you nice and toasty while listening. A two-fer I suppose - 

    High Power SET?

    in Talkin' Tubes

    Posted

    7 minutes ago, 83 LSIs said:

     

    I was listening to some jazz the other day and was curious, so I got the SPL meter out and did some calculations. My average power was @ 1/20 of a watt.

    There’s a reason Nelson Pass uses the name First Watt for his “skunk works” amplifier designs - 

    High Power SET?

    in Talkin' Tubes

    Posted

    Now I’m wondering about running two triode power tubes per channel is actually a “parallel “ circuit. I’ve looked at the Audio Mirror site where his new 6c33c monos are $19K/pr. and the Lamm Electronics site where their 6c33c amps are many multiples in price compared to AM. My point is never do  any of these producers describe their single ended amps as a “parallel circuit”. Class A single ended is as descriptive as it gets. So  two power tubes are used in each channel are automatically a “parallel “ circuit? I’m not so sure that’s a given at this point - 

    High Power SET?

    in Talkin' Tubes

    Posted

    1 hour ago, JohnA said:

     

    That is just the thing I was looking for.  So, 2 tubes, run in parallel as SET can make 45 watts?  I did not know SETs could be paralleled, thus the question about broadcast tubes.  And I was curious as to whether a broadcast tube could sound good. 


    I haven’t been to the Audio Mirror site in sometime but you might find much more technical information on this particular design. There’s actually a pair currently available on USAudiomart. Each mono are quite heavy at around 45 lbs.The transformer/power supply are enormous.

    But yes, 2x 6c33 per mono + (1x 6sn7; 1x 6sl7) make 45 single ended watts. So I’m only assuming this is considered a parallel circuit? And I’m sure much like a 211 or 845 they do run extremely hot. Just to pick up one tells you they are indeed an “industrial” , heavy duty tube. After all they were used to run the avionics in MIG fighters. 

    High Power SET?

    in Talkin' Tubes

    Posted

    Not a broadcast tube but the Russian 6C33 military based tube is a formidable candidate. BAT uses this is many designs a do several others. I personally owned two or three pairs of the Audio Mirror SET  monoblocks using this tube. An amazing triode capable of 45 watts + - running in parallel, 2x each mono. Rugged as hell, hotter than hell, once and maybe still used in MIG fighter aircraft. Shakey had a pair of their baby brothers using the 6as7 tube for 20 watts.

    First Watt Sit-3

    in Solid State

    Posted

    IMHO FW and Klipsch, or any high efficiency speaker, is a very good match. I guess a SIT model needs to be sampled but I have and do own FW M2, J2, F3 and F5. The F3 and 5 have remained, the others are gone. The F3 is very similar to low power single ended tubes (it’s is single ended SS) and the F5 comes off as a very very good  relatively low power SS amp with leanings to more powerful single ended tubes. I read  a F5 review from the owner of multi thousnad dollar Nagra 845 tube amps that the F5 was right on its heels in overall presentation. I’ve been through too many amps to mention yet the F3 remains with me longer than any. Neither it or the 5 is going anywhere soon. 

    NFL

    in Lounge

    Posted

    Shohei Ohtani singed what  was believed to be a 10yr/$700M, $70M per year contract only to find the Dodgers are paying him $2M/year allowing them to continue signing big money players. The rest of the contract deferred until after year 10. I imagine there are many contracts where the public knows little about the ins/outs, incentives etc. of the contracted terms. 

    Preparing to sell Heresy 3 (one pair) in pebble (396’s are Sold)

    in Garage Sale

    Posted

    Hey all - 

    As stated I’m thinning the herd with sale on a pair of Heresy 3 in black pebble pro finish (complete with all factory boxes and paperwork) and pair of 

    396 SMA ll w/510 mumps horn. H3’s purchased new, so one owner and very limited play, mint. The 396 were purchased new by a forum member 

    then sold to me, never used in any commercial setting. It would be great for these to go to a forum member and I’m posting here prior to heading to the dreaded CList or Marketplace. Photos to anyone truly interested. 
    Pickup required for the 396 and suggested for the Heresy’s (even with boxes I’d hate to ship). Located S of KC.

    H3 = $1200/pr.

    396 = Sold

    Thank you 

    R

     

    Cables, Coffee, Cycles, and Cocktails

    in Lounge

    Posted

    1 hour ago, grasshopper said:

    The cottage is vacant for a couple days .... no SIL and my other wife is staying at her place in Sasabe... in the shadow of the border "wall".

     

    I'm gonna follow George's lead. A couple glasses of bourbon, please.

     “border wall”. That there’s funny - 

    • Like 2

    What I Got Today!

    in Lounge

    Posted

    Really not keen on posting what comes through the door but owning numerous Klipsch speakers from RB75’s to Jubilee’s and several in between I think I can speak with experience when I hear something special. Just received a pair of Canadian made Coherent Audio GR 12 Signatures. Point source, or co-axial design using the high performance Radian 12 inch driver, inset with a 1.75 in. beryllium dome compression driver with high Q crossover components. Currently playing with Quicksilver Horn Monos I can honestly say these are goosebumpers, something I haven’t felt with few, if any other speaker. The texture, clarity, soundstage, overall “completeness” is astounding. An exciting addition to say the least -

    image.jpg

    • Like 8

    Looking For Nice Pair of La Scalas

    in Garage Sale

    Posted

    4 hours ago, PeteLB said:

     

    Thanks, for the welcome! I've been doing some researching online. I've listened to one pair of La Scalas but not in ideal conditions. The types of music I listen to are not too bass dependent but I do worry that the bass might be one of those things you don't think you will miss until you don't have it. The posters who say a sub is a necessity for La Scalas make me apprehensive but I'm comforted by posts such as yours who really like quality of the La Scala's bass response. The Fortes have lots of bass - it may be my placement but the bass is not always very tight and focused. I think the La Scalas would be an improvement in that regard. 

     

    I'm looking for used, but I'd like to audition new. So far I haven't found any dealers in the Toronto with La Scalas set up for audition. Maybe I'll start a thread in the appropriate section to ask about that. Thanks again!

    It’s rarely talked about but quality amplification benefits the LS, any version LS, bass response, greatly. Whether it be tubes or SS a high quality amp with a well designed, stout power supply really makes a difference with any LS. Nothing can make the bass horn produce low bass beyond its design parameters but you can sure make the most of it with the right front end gear. 

     

    • Like 2

    buying ki-396

    in Klipsch Pro Audio

    Posted

    I built stands for my three nine sixes from 4x4 lumber. I located the 510 same height as the center point of the 402 atop the Jube bass bin(s). Cut the lumber at same angle that match the trapezoidal shape the 396 cabinet, 11 or 13 degrees, I can’t remember which at this time. Painted flat black and sturdy as helll.

    • Thanks 1
×
×
  • Create New...