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Recent Posts
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By Jeffrey D. Medwin · Posted
Hello, A coupling cap , or any cap, is about the worst part we have in audio IMHO. There are plenty of caps in that amp. Look at this posts' preceding pictures !!! Lotsa electrolytics ( yuckk ) too, along with films. In a SET amp, IF ITS GOOD, you HEAR the quality............... of every cap...... and every part ................ in it. Anything you do to complicate the good SET circuit, each part added, is heard. KISS rules in SET design. The sales - description talks about ACTIVELY regulating current and voltage. So, we get to hear the complex regulators. As I read between the lines,............ this is a 6DJ8 directly coupled to a 2A3, two stage amp. From my twelve years of DIYing two stage DC 2A3 amps, a great TRUE two-stage amp requires a mu of 100 Input tube, to sound its best. A 6SL7-with a mu of 70, won't cut it into a 2A3 !! The 6DJ8 is NOT that tube, its worse, mu wise. A mu of 100 gives the two stage amp a JUMP factor, it boogies, is FUN to hear. Notice they say this : additionally the inputs and outputs are buffered by the highest quality transformers in the world. - - - - - - - - I think, from the description above, that these new amps are a three stage amp, because a transformer is associated with the 6DJ8, ...as is stated. So the extra parts, an extra transformer is added- likely in series with the signal. This adds unnecessary complexity and a loss of fidelity ( of the music signal having to go through extra parts ), to make it work. Had the designer used a mu of 100 tube properly in the first place, the transformer input tube buffer could have been avoided. There are three ways of coupling two tube stages : a) capacitor coupling b) transformer coupling c) direct coupling I have listed the coupling of stage techniques above, in the reverse order of what sounds best - at least in my experience. Its hard to beat the music signal transferring through three paralleled runs of Cardas Polished 19 AWG silver wire. I get such wire from Mike Percy, for a three inch distance, and use it for my direct couple. The Whamodyne seems to use a combination of b) and c). I'd easily prefer my own DIY ( c) only ) pure direct coupled two stage amps. That complex solid state regulator board we see pictured in some of the above posts...... I replace it functionally with just a single Mills MRA-12 shunt-to-ground resistor !! I think his pricing is very reasonable, but I would much prefer to build / hear my own simpler DIY amps !! The best-sounding SET amps in the world, will employ point-to-point wiring, in my experience. I've already outlined what I like, and why I like it, in my recent first post / thread up here ( in the 6AQ5 / 6005 P-P amplifier thread.) There is an "art" to great SET audio design !!! Have fun, and GOOD listening to all of you. Jeff -
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By moray james · Posted
you are most welcome and it's good to have you as a new member at the forum as well. While your phenolic diaphragms (tweeter and mid) will sound just fine at thirty years of age your crossover capacitors will not. You should upgrade them at the least to new Daytons or similar if you have the funds find some film and foil caps, I believe Dayton have some for your mid and hi section and you will be more than pleased that you did. -
Ah.....I now understand. Yes there is insulation inside both cabinets. It is stapled and possibly glued as well. -
Way different tonal balance than a Lowther. I really like my Hiii. My pair surprised me with how good they sounded. Expected less. -
By garthbernstein · Posted
I have the DGA1 (entry level), I'm very happy with it paired with souped up La Scalas (ALK engineering crossovers), the mid-range is super strong, and the ALK crossovers add depth and more bass (plus a good sub) = I'm very happy -
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Think I missed something, could all you guys plz repeat all that -
By mcobbs6879 · Posted
Hay Mark ,I'm knew to the forums did not know a lot about the speakers and asked for a little help! Very nice to know I'm considered a madman! I'm going to delete my account now so i don't have to be the Dummy for all to laugh at thanks Mark that really felt good to read that comment..... for all who tried to help me THANKS SO MUCH!!! I guess i will give them away to some one who will talk me out of them spearkers are in like NEW shape and sound amazing! Yea this was a chime in!!!!!🤔
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