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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Delet if not proper topic. Was wanting to experiment with 6e5p driving lifeless speakers. with possible 100v swing i'm guessing way to much for regular garbage amps. What are peoples ideas for lowering output v (to like >5v?) with out destroying...
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I do not want go for emergency ULF amps and to pay more than $50 for it, in fact all plate amps shall cost $50. I will probably end up getting another B2 amp, identical to the one that blew up with the identical changes. I just felt that this no-ampl...
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Romy thanks very much for taking the time to reply, presumably the design originates form PA design, literally enabling as many people as possible to hear the announcement, looking at the 'Everest' in Munich, the mid range 'horn' appears to be ...
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[quote user="drdna"]1. This may simply be a symptom of electricity variability. I would listen for a few days and see if it improves. [/quote]
Do you mean that electricity affects the sound of one cartridge but not another? I doubt that, parti...
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I haven't played with the loadings yet, as I'm still in the deep woods of the assemblyand a hunt for an intelligent SUT. But the primary loading scares mewith it's super sensitivity to the resistor quality, value, etc.Anyway, I'm somehow optimistic t...
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This there is the last in the “THE PROBLEMS WITH HORNS” cycle. The previous threads might be found at:
Problems with horns: tweeters.Problems with horns: mid-range horns.Problems with horns: mid-range drivers.
This would be probably the most contro...
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Wow, I mean really, really, really, really, really WOW!
A week ago I converted one of the Super Milqs to 5:1 loading and yesterday I converted another one. I loved what the last week converted amp did. It was very nice but today I put the entire sys...
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W,
Be careful with Milq’s LF channel. When you go for a dedicated LF SET and make the SET to operate very low then you need very precisely dial in the loading of your out tube with the behavior of your LF drivers/enclosure. Without know the very spe...
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[quote]a sufficiently-large last capacitor with using in input choke make the sound or transformer, rectifier and choke less relevant[/quote]I have to agree with Dima. The power supply has to be harmonious with the amplifier yet separate at the...
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Why not tap the filter choke (the 1H ahead of the driver) ie use a 1H autoformer... given the gentle loading presented by what follows, it shouldn't mess up other stages, no?cv...
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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...
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[quote user="Romy the Cat"]I never feel comfortable with corner-loading despite that the best midbass I even heard was coming from corner-loaded horns.[/quote]The lower midrange is the region that should make the most problems in a backloaded corner ...
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Interestng, I did not near horn load Electrostats. What the profile and what the mouth rate of your horn? What the resonant frequency of Electrostats you have before and after loading? Are you driving the Electrostats direct from plate or via a trans...
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Ok, Paul, this is the info that I needed, thank you!My Hagtech anti-RIAA has 50R output imp. at -60dB output for MC.Unfortunately my load resistors are soldered and in a very painful place,(for some reason the circuit did not accper the loading R at ...
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Well, yes... I've not been to prison in over two years! Apart from keeping me off the streets at night, the results when listening to one of the 40Hz horns were, dare I say, encouraging, though I do hesitate to say so, as the "evaluation" was carried...
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Hello Romy,I guess I'll go for the 103R at a later date - looking at the specs on this one the loading is the same with a lower output,but I'm thinking it might handle those 25min + LP sides better from the opera world etc.Being half Italiano I need ...
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Very interesting.I spent a bunch of time messing around with slot loading under my druids, and then put 1 inch thick planks of wood I had lying around under them instead. Both tone and amplitude of bass improved noticeably (although please note we ar...
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Thanks, Wojtekm it sounds like interesting experience. I would mention that you use K-horns and with them the loading would be much more capriccios then it would it be with stand-alone infinite-baffle bass section. Did you seal the space between the ...
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Thanks for the great "outre" description, Yoshi; about as I had supposed from Romy's posts to date, actually, but just such a simple and understandable description and picture.So is this the original "Big 'Un" or the latest "Wedge", which we hav...
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The AudioFederation guy posted pictures from RMAF show with Cogent room. (The images are courtesy to http://www.audiofederation.com)
I was wrong in my previous post, as Cogent did demonstrate their loudspeakers with Ionovac ion tweeter. Yester...
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Marc Henry-In the 6moons write-up, you mentioned the Altec 515 re-issue not being satisfactory for your purposes on the Grande Castine horn. I presume the specific 515 variant you used was the 'g' type (designed for horn loading) rather than 515'b' ...
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To get 17W per KT88 in SE, I think it must be pentode or ultralinear operation. Triode-connected in A1, I think a KT88 can only make 10-11W max (plated dissipation limit is 44W.) So it probably uses feedback, but that is still not automatically a b...
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Loudspeakers. For whomever who follows my dairies on this site and whoever has any real understanding what makes a horn-loaded loudspeaker to sound good it is know that Macondo Acoustic System is not juts the result of my DIY efforts or the John Hasq...
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Yes, to “voice” the DSET is tricky and requires a lot of listening experience, or more accurately saying – it requires to make a lot of mistakes and understand own mistakes. It is not difficult –juts require patience. Still, if one “get” how DSET sou...
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I see, so I'd better get plain copper trannies from S&B directly, and plug into the EAR's inputs. I'll ask you how to set up loading with some resistors I guess. I said I'm a moron ;-)Regards....
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I think industrial grade Arcotronics KP172 (from RS components ?), film and foil. I use them also as output coupling caps (2x0,47u)
Other changes I've made, not commented in my posts here:
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Anthony, this is very interesting perspective. I associate my feeling in respect to sensitivity but you brought up the activity as something which certainly coupled with sensitivity. I do not think that we have a mythologically clean experiment h...
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Hi Romy I remember somewhere deep in the forum it was said, with a proper loading (cant recall what u did, feedback, or output resistance etc.. on the amp) you reached a point where the metal resonance got tamed and played better than the plastic. Se...
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[quote user="Jeffrey Jackson"] Ming would like to provide this custom basshorn service to his customers in the US market.. Goto Japan has nothing to do with this... [/quote]
Very cool, the more “hornier” the better as far as I concern.
[quote user...
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Got the ultra low DCR toroids coil and pit them in use. Yes, it was very right move and they a bit trimmed the midbass tail. Playing with inductance and listening how the midbass decays (measurements are worthless in this case) I ended up with 4.8mH ...
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