wdecho

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  1. For a $100 budget I would look at some of the Class D options. A lot of bang for the buck and surprisingly nice sounding for what they cost. https://www.parts-express.com/cat/home-audio-amplifiers/106 I put together these parts and was astonished at what I was hearing. https://www.parts-express.com/sure-electronics-aa-ab32281-2x200w-class-d-audio-amplifier-board-t-amp--320-3364 https://www.parts-express.com/mean-well-mw-nes-150-24-24-vdc-65a-150w-regulated-switching-power-supply--320-314 and you will need to add this and with very limited diy skills one will have a quality sounding amplifier for less than $100. https://www.parts-express.com/sure-electronics-aa-aa11117-digital-volume-control-kit--320-3180
  2. Not sure it meets all your requirements, I mostly build only class A and have not delved into the details of the circuit. http://www.diyaudio.com/forums/pass-labs/227503-ab100-class-ab-power-amplifier.html
  3. Where does he see the sparks? Most likely bad tube but could be any component.
  4. I have a number of 2 watt or less tube amps and they are not created equal. My SE 45 tube amp with 2 watts will hold it's own with any amp I own with my LaScala's whereas other 2 watt ones will not. To be sure, for most owners of our speakers, I recommend at least 5 watts of SET power especially over the cheaper 2 watt ones.
  5. Lots of happy campers on this forum with the Yaqin MC-13S. Amazon or this guy on Ebay has good track record. http://www.ebay.com/itm/YAQIN-MC-13S-EL34-Push-Pull-Integrated-Stereo-Tube-Amplifier-/142379481756?hash=item21267a7a9c:g:TswAAOSwax5Ywa1v Tubes are the best bang for the buck. Any of the better SS offerings in that price range will be adequate as well. If you want the horns to show their stuff tubes are the way to go for less money than a equal SS amp. K-horns in rosewood, I am envious.
  6. A small amount of feedback is not an evil thing. The problem with feedback is with the multiple output stages needed for higher power amplifiers. Most if not all of the Firstwatt amplifiers are 2 or 3 stages at most with the ones having some feedback on one stage only. On amplifiers with say 100 watts you will have 5 or 6 or more stages and each one having feedback to correct errors in each stage. It compounds and as some say sucks the life out of the sound. We are fortunate to have speakers where a quality Class A SS amp with 20 watts or less will suffice. The Firstwatt amplifiers are a perfect match for Klipsch speakers and they will last many years if not your lifetime. They also hold their value extremely well. As far as an Aleph J and a SET, they are both 2 stage single ended class A amplifiers. I have not heard an Aleph J but I did have an Aleph 30. It is a good SS alternative to a SET. Many will only consider SS these days and for good reasons. In my world tubes still rule and this is from someone who has multiple Firstwatt amplifiers. This does of course depends on what tube amplifier we are talking about. I have one FW SS PP amplifier that sounds almost as good as my SE 300B or my SE 45 or my SE EL34 tube amplifier. Whether one likes a single ended or push pull in an amplifier, either SS or tube depends a lot on the choice of music one likes. I personally like both sounds depending on mood. Also the sound will depend a lot on the preamplifier you drive it with. To listen to the amplifier only I use my B1 buffer which is neutral or almost. Throw a quality tube pre in front of one and experience a more tube like sound. Drive one with a good quick SS pre and the sound is more dynamic and quick. High power SS amplifiers became the in thing years ago with the introduction of sealed small inefficient acoustic suspension speakers where 85db was the rule. Our speakers are over 100 db or real close even the smaller Klipsch. When I was younger I was like the large majority of buyers and would not consider buying an amplifier with less than 100 watts. I was also curious how people could spend thousands of dollars for a SE 300B amplifier with only 5 or 6 watts. I had to wait until I was in my 60's to find out.
  7. I can agree with you. The newer A/B amps have improved their performance below 1 watt but as you said it is more 3rd which is obnoxious whereas 2nd is sometimes considered a plus. I like a touch of 2nd.
  8. I think he is making the case for Class A. The high power A/B amps are rated for distortion at close to peak and not below 1 watt. Many have higher distortion numbers below 1 watt than they do at close to peak.
  9. Nelson Pass has turned a kitchen table enterprise into a successful biz with his Firstwatt brand, hench the name first watt. . "I suspect that 100 watt amps may have distortion down there. WMcD" That was more the case a few years ago but I believe the better amps being sold now have made improvements at 1 watt or less. I like that WMcD did a test at 2.82V with his speakers in the garage. Most have no idea how loud 1 steady watt is. Even 90db speakers are peaking with 3 to 5 watts for most users and even at 5 watt peaks many would turn it down. The only speakers I have found that benefited with mega watts was a 2nd generation Bose 901's. I noticed an improvement going from 80 watts to 200 watts many years ago when my taste and listening levels were much different than now. But they were intensely power hungry speakers. With my speakers I am not sacrificing anything using 5 watts either SS or tube. Manufacturers use the gimmick of my 100 watt amplifier sounds better than your 75 watt one. More is better philosophy to make more money from the average buyer.
  10. Remember guys horns with 5 or 6 watts filled auditoriums before transistors. The Western Electric 300B was made for this job, movie theaters. One poster was correct most do not want a 600 cc car engine but why buy a 600 hp engine and drive only 55 mph and only to the grocery store once a week when 100 horses would do. It would be a total waste when you only use 100 hp at most but have a 600 hp motor. A frivolous waste of money but like audiophiles one would have bragging rights. But then we have seen the little gray haired woman driving a new corvette 50 mph on the interstate.
  11. I need at least 2 SET watts to play really loud on my LaScala's in a medium size room. Five SS watts is plenty I found in the Amp Camp amp I recently built. Needing megawatts is a myth sellers spread to sell their products, especially with our speakers. I have always said if a 5 watt SET is not good enough for speakers like ours just what would it be good for.
  12. Exactly the case for A/B, a compromise. A 25 watt Class A SS amp generates a fair amount of heat, like 55C. Big heavy, hot, and expensive is what Class A SS high power is going to cost. I recently built a 5 watt Class A which has plenty of power with my LaScala's in a medium size room at a volume it is hard to talk over. I actually would rate it as 2 clean watts. Some Class A/B amplifiers nowadays are biased higher than those of old where at a couple of watts they are in Class A. Most all quality preamplifiers are run in Class A where heat is not a problem being that one is dealing with small volts or watts. If one needs more than 25 watts, or think they do, A/B is the most practical way to go. I should also add the better Class D as another good option.
  13. Run up the bias on a Class A/B and it will sound almost as good as an amplifier being run in Class A.
  14. Welcome to the forum alzinski. We need more tubeheads posting on this forum. Tubes are still king with our speakers.
  15. The ebay kit is a Class A/B amplifier. This Amp Camp little amp is Class A single ended single stage with one transistor in the audio chain. It follows the philosophy of less is better when it comes to parts much as a SE tube amplifier. I have looked at this little A/B boards being sold on Ebay and a worthy first diy build. http://www.ebay.com/itm/251482109851?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Plenty enough power for our speakers and the heatsink demands are much lower than for a Class A amplifier or the 300 watt one you have listed above. There are numerous builds of the link above with positive things to say about them on the diyaudio forum. I am a devoted Class A fan but I do build and listen to most everything. I have built both the Gainclones, LM3875 and LM3886. Both respectable A/B amplifier projects but not Class A.