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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Paul S"]Amir, what you say and the simple way you put it is indeed a very important consideration for speaker/amp matching, and it is something that one must actually hear and cultivate in the first place. Since there is no way to emperi...
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The least offensive result I have gotten from a ported speaker was closest to the yellow option. I built a pair of small monitors with ports on the top purely because it was the only way they would fit. I cannot reasonably e...
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First order of business is to sell them at a high price; so, if their approach and their spiel seem familiar...Again, this sort of "balanced", "ultra-low-noise" circuitry has been around in the pro sound market for a while now, but NOT for phono stag...
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[quote user="guy sergeant"]I thought the Library of Congress was supposed to have one of these, which from what I heard would do the same job perfectly well and in real time.
http://www.elpj.com/about/index.html[/quote] Yes, it was my initial react...
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Yes, a cheap inductive l-pad between OPT and S2 in midrange channel. Interestingly, the frequency response of the first order Lazy Ribbon is remarkably similar to a response you posted somewhere on this site of the Water Drop with third order filter...
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This thread has gotten Interesting. Josh, what do you say to the fact that some of the best sounding drivers with "the same specs" sound different, one from the other? It does seem to get down to how well versed in sound development one is in the f...
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Keep in mind that my crossovers are not just 6db filters. There is an impedance correction network, suited to these exact drivers in these horns. Unless this correction is there, the first order filters can not work against the rising or falling impe...
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[quote user="haralanov"] The ribbon is 100% tonally … If you use this tweeter lower than 10kHz your system will be totally unlistenable because you cannot reproduce the proper tone of harmonics.[/quote] It is pretty much what I found as well during m...
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[quote user="Thorsten"] First, the Lowther has ze wizzer cut off and has an Equalisation circuit to flatten ze upper midrange bump. Otherwise it is run fullrange, that is WITHOUT HIGHPASS OR LOWPASS. [/quote]
Probably this is why the Lowther sounded...
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Yes indeed. The company was originally Nova Physics and appears to have been sold on to Sam Laufer, a lawyer by profession originally who brought in Mark Porzilli of Melos and Pipedreams fame. I do not know if this company actually manufactures or se...
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I had yesterday our technician to make a first pass over the Mason and now it is eventually is in tune. It is become playable I have discovered a interring challenge. As I said before the acoustic setting for the piano is perfect in out listening roo...
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I appreciated a couple of things, probably for different reasons than Q put them forward, I think. For one thing, I more or less discount his timelines, and also the idea that certain audio components reached a high-water mark as "complete" achievem...
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Paul, l I have written about it somewhere: the passive speaker-level crossovers on bass channels are no good. Marko has 250Hz that with 3rd order would be around 10mH and 2mH. With air core then would be very large coils with huge amount of DCR – ver...
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I.M. Distortion wrote : "...#1 from were you listen to system from you should be able to look down the throat of every horn in your system..."jd wrote : "...Hmmm......
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[quote user="Romy the Cat"]
Yes. I’m exiting to see how the new horn I shaping up. Still I do not think that it is about second orders. Obviously in context of 5 channels system, the more channels one gets then less room between them. I still feel...
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[quote user="Antonio J"] INTEGRATION that's the clue and that's what I always feel lacks in my room, I mean extreme integration, real integration, the feeling that the recorded bass sound has its own boundaries, not my room's. [/quote]
I do not comp...
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[quote user="ayebee"] The horns that Stereo Lab make are very good, especially considering the relatively modest prices. I bought the "Ultra-Fi" version of the 140Hz horns and they are of course not completely free of resonance ….Present system consi...
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If you read the post, the reference in made to this being "in my implementation"
I have however yet to hear a bass unit that can provide the low end quality whilst still allowing a first order slope.Unless we are happy to accept copious quantities...
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Keith,
Interesting. Are you sure there are first order slopes on your speakers? Having played with those drivers I cannot see how it can be done. Or are you just talking of the electrical slope on the 4001?...
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First off, I forgot to mention an interesting observation: Before running the sweeps (previous post), since the drivers in the upper-bass horns are new, I decided to verify/optimize rear chamber volume (they are easily adjustable)... I wasn't expecti...
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It was interesting, educational and in way embarrassing. Last night I send the directions to my carpenter to redo the third section in accordance to the original plan where the opening of the sections is more consistent. This morning he took the thir...
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I have been running my nominally 8 Ohm speakers from the ML2s' 4 Ohm taps for quite a while, in order to keep the sound from getting squirrilly and to keep the bass strong enough.Today I used the re-capped/improved K&K phonostage as a source and ...
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Hi,[quote user="morricab"]Hmmm....I guess I can't really see that unless you are enjoying a particular coloration you are getting from the TVC.[/quote] Nope. On this you are wrong. Based on direct bypass tests the TVC's I USE (that is the specif...
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Yes but you are still going to need a higher order slope than 6db to prevent unnecessary non linear distortion from the bass driver and then the insertion losses inherent in a PLL crossover become an issue. Higher order slopes and active operation wo...
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[quote user="el`Ol"]Romy, What happens when you use the injection channel with inverted polarity?[/quote] Unsuccessful. My Injection Channel (Tannoy 10” Red) is too with bandwidth and even at minus 10db is “talks” with HF channel of Macondo, which do...
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No, i really did mean a 4592nd midrange - it is a OEM version that I think I bought from assistance audio. There are various reasons I'm crossing over at 3k (more like 2500hz now) - first, the horns are 250hz and therefore too deep for high treble wi...
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At first I plan to power the thing SET, with a known, existing amp (a triode wired EL84) which I've already built and know the Sound. It is not bad, but a little "warm" sounding (second harmonics, and is low powered for low frequenci...
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If you know how in some optical systems imagery get destroyed when an aperture getting closed to F64 or even smaller, then you understand what happens in compression driver when frequency get higher and spaces smaller. Yes, the proximity of wavelengt...
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Amir, what you say and the simple way you put it is indeed a very important consideration for speaker/amp matching, and it is something that one must actually hear and cultivate in the first place. Since there is no way to emperically quantify the "r...
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Nope, sorry, it does not make any sense for me. The use of Rowland amp I guess is fine if it being use for testing of the filters. Still if you use high-pass for your midrange horn then what resistor does in your RC filter? A first order filter, rega...
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