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Read the Post in new Window Read the Post in Threaded view  Post #1905: DC issues with early AM power by DHT4ME on 2023-03-03 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
Amir,Taking note that the DC condition is present when you say the power is cleanest yet Pure Power does not help leads one to want to investigate a high current DC blocker BEFORE the PP. Its possible that heavy DC could effect the PP in some way. Mo...

Read the Post in new Window Read the Post in Threaded view  Post #218: Bearing design by DHT4ME on 2022-03-07 
Browse the content of the threads in new Window  Thread: Ultimate Turntable in Analog Playback  220 Replies 
I built my "Ultimate Turntable" and did the long bearing approach. It is 8" long and .750" diameter. I have had a love hate relationship with the long bearing. While it is VERY stable it is extremely difficult to setup. The long length absolutely...

Read the Post in new Window Read the Post in Threaded view  Post #297: To Be a Content Cat by DHT4ME on 2009-05-13 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I'm sure it will purrrr. You are using the top of the heap tubes here. No bad apples here, just different aroma.the VT25 and 316a are the cleanest, nicest sound I know of. I have a bunch too. Fun Fun FunLife is good! ...

Read the Post in new Window Read the Post in Threaded view  Post #295: Hum vs voltage by DHT4ME on 2009-05-13 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
…they say: “The 4Volt technique gives best ratio between diameter and length of the filaments”. It does not sound very credible to me, in fact is sound more like marketing BS. This is true. It co...

Read the Post in new Window Read the Post in Threaded view  Post #291: SHuguang by DHT4ME on 2009-05-11 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I prefer the 2A3C. A single plate unit to the Bi-Plate ones.RCA NOS have a balanced sound too.Sofia are TJ...

Read the Post in new Window Read the Post in Threaded view  Post #282: I agree by DHT4ME on 2009-05-10 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Go for a split bobbin unit for each tube. I would say that you will be very pleased when you dedicate a trans to the tube you choose. Less RF and strange coupling effects.I didn't notice the implementation earlier but can easily see some issues creep...

Read the Post in new Window Read the Post in Threaded view  Post #276: Loading by DHT4ME on 2009-05-10 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Romy if you feel that you are not loading the tubes enough put a 16ohm power resistor in parallel w the S2. this will cut the load line in half. It should be less wiry and stronger more weighty sound. Obviously you might experiment w values to find t...

Read the Post in new Window Read the Post in Threaded view  Post #269: AC transformers by DHT4ME on 2009-05-06 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
FWIW I have found that best results are from dedicated transformers for each filiament. I would not even think of using a multiple secondary trans for  DHT's.I use a split bobbin type only.The split bobbin gives very poof HF coupling in audio but is ...

Read the Post in new Window Read the Post in Threaded view  Post #263: Molecular sound by DHT4ME on 2009-05-06 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
So I am aasuming that you are referring the very low level capability of your driver or amps?   The subtle nuances?What other drivers did you find did well beside the Vitavox. I always felt that  most comperssion drivers are a little tightand need to...

Read the Post in new Window Read the Post in Threaded view  Post #10: Port o guess by DHT4ME on 2008-09-14 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
Honestly there is not enough info here to make a usefull recommendation. If the drivers are going to be used from the 95hz crossover point up then you might not even have to worry about it if the Fs is well below that. I would not do it anyway since ...

Read the Post in new Window Read the Post in Threaded view  Post #7: Porting paramaters by DHT4ME on 2008-09-14 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
The first thing that comes to mind is what is the range that the drivers will cover and what is the Fs of the drivers. Another thing to consider is the loading type on the bass units you have. I take it that they are sealed ? If so I would not con...

Read the Post in new Window Read the Post in Threaded view  Post #33: Smoke and Mirrors- err ......suspensions by DHT4ME on 2008-09-04 
Browse the content of the threads in new Window  Thread: The Shelter 90X: mystery or mastery in Analog Playback  54 Replies 
yes unfortunately smoking shortens the life of rubber in suspensions. How much is too much? I don't know that but it does have a life shortening effect. I was looking over your post and saw you mentioned that pops and surface noise was higher.That is...

Read the Post in new Window Read the Post in Threaded view  Post #31: Diagnosis of suspension by DHT4ME on 2008-09-04 
Browse the content of the threads in new Window  Thread: The Shelter 90X: mystery or mastery in Analog Playback  54 Replies 
RomyHaving worked in a high end shop and doing lots of carts I will lend my experiences.Suspensions either harden or soften. When they soften you will notice that your VTA starts to go, you have to lift the rear of the cart and they go quite rapidly....

Read the Post in new Window Read the Post in Threaded view  Post #4: Cool running amps by DHT4ME on 2008-09-03 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
Gosh I would have thought that those tube space heaters would be welcome in that frigid Boston climate.It was 107 here 2 weeks ago. I leave most of my system on  24-7, you should have seen my August electric bill.FWIW I rarely have to use the he...

Read the Post in new Window Read the Post in Threaded view  Post #2: Pilot lamps by DHT4ME on 2008-09-03 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
We now call those modeling lamps in our big stobes. I think that the analogy is even better considering your intentions.I personally feel strongly that high sensitivity is the correct path and that small ported woofers in a MTM box will fall short of...

Read the Post in new Window Read the Post in Threaded view  Post #11: What about the rest of the room by DHT4ME on 2008-09-02 
Browse the content of the threads in new Window  Thread: The “Dead Points of Live Sound” in Playback Listening  28 Replies 
In reading this thread I am compelled to ask the simple question about the rest of the room. In my experience moving furniture and room treatments also make a huge impact and must certainly inffluence the perfect lcation for any room as specifically ...

Read the Post in new Window Read the Post in Threaded view  Post #5: If you are going to dream-- by DHT4ME on 2008-08-27 
Browse the content of the threads in new Window  Thread: Recording/Playback software in Didital Things  13 Replies 
dream big. Yeah it is wishfull thinking about a wavelab inspired player but heck if we don't have dreams them what do we have  to look forward to. I was very excited about a PC based server at first. After 4 or so weeks of trying to figure it al...

Read the Post in new Window Read the Post in Threaded view  Post #3: Wavelab and playback by DHT4ME on 2008-08-27 
Browse the content of the threads in new Window  Thread: Recording/Playback software in Didital Things  13 Replies 
Well we know that Steinberg  who created Wavelab is also behind ASIO. The Ottachan ASIO notes state that Wavelab was the sonic standard for compiling the plugin. It is possible to get very close to the Wavelab sonic standard with some players an...
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