|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
First, Adrian, Thanks for your feedback on the newer designed 2A3 tubes... very interesting. I've looked at all 3 of these brands before but have not as of yet purchased any (I have a large collection of 45 and 2A3 of various NOS US brands...
|
|
Romy,
I too was thinking the subject had evolved to the point where the thread needed splitting off.
I agree with you regarding the need to start off by constructing of a pair of “normal” Melquiades as a reference.
I don’t mind the fact that...
|
|
Dealing more with Sun Audio SV-2A3 kit it amassed me how bad the kit was. The guys made very cheap, in fact I hardly believe that this company has anything to do with Japan – it looks more like K-Mart level of amplifier. I heard a number of very posi...
|
|
Hi Romy
a good sound in a room does not depend only on the speaker chain, but essencially also of the room acoustics. Probably many of the Trio systems didn’t sound right just because of that…. I was at Holgers Home in Lautersbach back in 94. He ha...
|
|
I would like to share my observations about public perception of Melquiades - The Realty Reconstructions Amplifier.
Melquiades, or as I affectedly-abridgedly call it “the Melq” was released to pubic exactly a year ago:
http://www.goodsoundclub.com/...
|
|
The Rohde & Schwarz EU-6201 tuner was made for German Ultrakurzwellen (ultra short waves or FM) Broadcast Network. The idea was to have a chain of wide-bandwidth composite signal receivers that feed re-transmitters. I made an attempt to accommoda...
|
|
[quote user="oxric"]Hi Romy:
I have been following your mid-bass horn project with a mixture of fascination and horror for a little while and am awed by the remarkable amount of creative thinking that has gone into it.
I am sure there is n...
|
|
The idiots write the things and have are clueless what the write. It is time for another manufacture to remind that he is still alive and to initiate another round of cash collection for his customers. How they do it? Of cause by introduction of ...
|
|
Thanks, Peter
This is an interesting and in a way controversial subject, let us to view it in details.
[quote user="peter foster"] It may be worthwhile to check what transformer is installed in your DA924 because Lavry did change over to torroid tr...
|
|
The 6C33C preamp? Hm, this is bold. As I see you use it as a single stage buffer with only one 6C33C and couple output with a transformer? I head the Germans built something like this but I never heard it or saw it. I do not feel a need for such ...
|
|
I have for a month or so the Allnic H-1500 II SE Plus phono stage sitting in my home. It is two chassis phonostages with tube rectification, tube regulation, LCR 600R filters, own Allnic step up transformer for MC needles, 5842/417A in gain stage...
|
|
[quote user="steverino"] Romy said "When I had my magnetic and EMI probes running with open PP2000 cover then the probes showed me that I was in the middle of Chernobyl Black Forest. I think the PP3000 even more poisoning..."
Now I begin to u...
|
|
[quote user="jessie.dazzle"]Wow, 6 x 15" drivers (!!!); though the curved profile certainly imparts rigidity, I'm guessing this horn must resonate more than a bit (no bracing until the mouth) -- but I like this thing.
Interesting, the phase plug-lik...
|
|
Hello chaps,
Another option thrown in there by Bud; always enjoy your posts even if I don't follow them 100%...Let me attempt to barbarically distil what you said into 2 aspects which are
1) The dielectric properties of the insulating materials2) M...
|
|
Yes, something like this. This all common sense. Make the main grounding bus with some kind of
ugly, very low Ga (1-6) wire with no isolation. Make sure it is copper, so main
grounding bus should be a LOT of copper. It should be connected to amp’s...
|
|
[quote user="Dominik"]You probably decline this option, because this horn is from plasctic ( You can take carbon horn also).Polish autotech make Iwata 300 for me. You Can order from them what You want.[/quote]
Yes, the Iwata horns are good as ...
|
|
Thanks for your comments Romy.
You should like this bit of news... I forgot to mention, these will be round-section horns...
And yes, they will be very heavy... Made from a metal armature and very thick, natural (hemp) fiber-reinforced, plaster...
|
|
[quote user="Lx_"] The second sentence is my own conclusion. It was not my intention to imply that it is yours, sorry for the misunderstanding this may have caused. We both agree that PP can be sensitive to incoming AC. The context and circumstan...
|
|
[quote user="jessie.dazzle"] Resonant frequency :
I did not try to measure it. Can anyone confirm the following : I assume this parameter is most easily determined by playing a series of tones at constant signal strength (volume setting) whi...
|
|
[quote user="morricab"] The one thing that the Lamm ML2 does differently than nearly all tube amps is regulation of the output stage. They do this with the 2nd 6C33C that is on the chassis. Even the KR amps don't do this and I think it is...
|
|
[quote user="jessie.dazzle"] One did; in reviewing the L2 preamp, John Atkinson (Stereophile) wrote:"...The absolute polarity was preserved from both sets of outputs with the front-panel switch set to "0 degrees," confirming that the XLR jacks ar...
|
|
Your initial post reminded me of this[quote user="Romy the Cat"] Markus wrote:I
have recently been thinking about efficiency. Apart from enabling you
to use low power amps, is there really any reason why high efficiency is
better than low or me...
|
|
The Melquiades give me inspiration to build this 6C33C amplifier. It's on a stereo chassis that has few unique features
- Vacuum tube rectifier separately for Input/Driver and Output tubes.
...
|
|
[quote user="Romy the Cat"] As now the Rohde & Schwarz + T-85 sound just wonderful and I would not look for other Multiplex Decoders with exception of a future idea to built one even better (with L de-emphasize) INSEDE of the Rohde & Sc...
|
|
Jessie, I have moved your post to your 45Hz horns thread but then decided to keep it here as some of my comments would be about entire system not only about your midbass horn. Anyhow, there is nothing there to laugh and it is pleasant to see that som...
|
|
[quote user="KOTriode"] With 6C33C output run at 40W plate dissipation, this amp run much hotter than an 845 amp with output tube running at 100W. I measured the hottest point on the bulb and it is about 380F. I guess the due to short bottle , t...
|
|
I told somewhere at the site about my idea of Zarathustra.
The amp as good as it is but I want to make it super compact and with max efficiency.
The efficiency I was considering to get
by making the secondary of output stage switchable. I got fro...
|
|
Marc Mickelson published his new infomercial
about Lamm LP1 phonostage. I do not use Lamm products
but as former Lamm product user I naturally keep looking what Lamm does. http://www.theaudiobeat.com/equipment/lamm_lp1_signature.htm
I did not rea...
|
|
[quote user="anthony"]That is what I
meant, an ammeter for the DHT plate current. I don't see that the plate
current is adjustable anywhere in the circuit, and you don't show the meter in
the circuit diagram so I wondered if you actually used one...
|
|
- The noise has two phases - large noise and steady state noise. Large one ocures when the PP is switched offline and then switched on. This noise depends on the input (SUT or MM) and the orientation Signal enclosure vs power supply
...
|
|
|
|
|
All context of this site except the Forum's posts
Copyright © Roman Bessnow 2004-2024
All messages within the Site’s Forum Copyright © by
authors of the posts
|
|
Last 24-hours posts: |
1 |
|
 |
|
|
Total human visitors: |
42,926,321 |
|
|
|
|
|
|