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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy wrote:"...What kind outer suspension it has, is it rubber?..." Correct (I know I know...)"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."Pitch: The property of sound that varies with varia...
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I can see objections to using paralleled tubes to achieve higher power where the channel has a single driver, but surely where you have multiple drivers differences between the drivers themselves would render any disadvantage of using (say) one tube ...
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[quote user="el`Ol"]Maybe one should't give up the attic-IB idea, the subs could fire downwards.http://www.aespeakers.com/drivers.php?driver_id=8[/quote] Great idea, thanks for reminding. That still might be an option. I need to educate myself about...
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I forget if you started out by setting the phase and level(s) of your ULF with DSP to begin with. Not to cave in to herd mentality, but it might be "worth it" to rent a DSP/D (servo) amp(s) combo to play with. If nothing else, that amp has to modulat...
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Nice rant about "scientists"; but I suppose you are preaching to the choir here.I jumped in not to pile on the stupid "scientists" but to address the rendering of bass, and ULF in particular, in the context of home hi-fi.A while back I got a splash o...
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As a practitioner of vibration decoupling (stacore.pl), I second the idea. No gel, foam, rubber, etc will work on ULF as high mass + pneumatic mounts do. Pref. pneumatic damped too. I can assist with the design of the suspension. Cheers,Jarek...
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Thanks, Scooter, I will check it out. Meantime, I thought I should put a "recognizable" header on/in the thread... At this point I am "ready" for DSP at ULF; but I still "draw the line" at that... so far...I suppose that part of the "problem" is ...
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Another giant attic for IB ULF! That can't have happened by chance! Am I the only one who wonders about parking the amps on the woofers?Best regards,Paul S...
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My point was simply that my interest in THs is because of the form factor, rather than any perceived sound benefits compared with traditional horns. To my way of thinking, THs are a specialized tool for a very specific application - ULF. ...
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agree 120%I have been there in both systems several times and it is an experience for life, especially the barbeque system. I am waiting the bass horn with bang Ulf. RgsSpiros...
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The thing I'm fishing is not the plate amp part but the "programmable" DSP married to the Class D for ULF. I've actually heard this a lot, but never in a high-demands, home system where I could seriously "target" the implementation for a reasonable ...
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Well, I hope to find promising ULF coming from a DSP/Hypex set up. I just didn't hear it yet. As ever, I hate DIY, and I will only build my own if I have to.Best regards,Paul S...
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[quote user="Romy the Cat"]
Aura made their 1808 driver in 80s and most of the 90s and it was wonderful. It had huge high-temperature neodymium magnet, unique magnet geometry with underhung 4" edgewound aluminum voice coil. It was the only 18-inch...
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My insite into this madness,,,Is the construction of one note box,s ULF,,, It will end up being nothing more than a series of low end ORGAN PIPE style of wood construction,,, Alice in Wonder land style Mad Hatter of BASS MODULES,, I guess you know...
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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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When we were chasing this same (or very similar...) shadow and spinning the same (or very similar...) wheels a while back, I suggested DSP EQ for this, and sane people responded with thoughtful ideas on the subject. The better RELs have always been ...
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Nope, I am not familiar with sound or applications of this tube. It is indirect heated beam tetrode – why would it be any different from the whole family of beam tetrodes? From my perspective it might be interesting for ULF DSET solution as it has a...
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All thinking about ULF are usually centered on 3 subjects:
drivers, topology and amplification. Even though these 3 subsets very much intertwined
I still would like to talk about it separately. We do presume that we have the proper
drivers for pro...
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My Placete preamp was sitting in Idaho for update for a
long time, so there was not a lot of audio activity lately. Also, the last few
month there was a lot of things going on in my life that severely compromised my
audio rotation. It is summer an...
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[quote user="Romy the Cat"] It did not last long….
Just a couple days back I was thinking that I will live with my current lower bass for a while and now I feel that I will not. I do not feel that my current ULF is wrong. In fact I feel that ...
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Got the right channel open baffle installed. It's certainly
not finished cosmetically but it is fully functional. There is nothing measured
or calibrated But I spent quite a few hours listening last night. It is very
very very interesting result. ...
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[quote user="ulf"]One advantage of the use of a phase plug in a midbass horn is that it will beam less at higher frequenzies than a horn without phase plug. If the phase plug is designed for the specific horn and driver it will help "steer" the HF.
...
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Last night I was experimenting with integration of ULF and midbass and was playing relatively loud. The ULF woofers is at second order at 35Hz and the were located outside of my listening room, in the next room with a large wale between then, but...
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There is a tube out there might be a good candidate to drive ULF from DSET
http://tubedata.tubes.se/sheets/127/7/7242.pdf
It is a low voltage triode with 100W on plate, 9 times gain and 80R plate impedance. 3 of them might form a...
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I am I wondering if my dissatisfaction with my new ULF channel is not the problem of my but the problem of the new PP2000 lower bass.
http://www.RomyTheCat.com/TreeItem.aspx?PostID=15046
at the time I start fine tuning of the ULF ...
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Lately I have been thinking a lot, trying figure out what I
am and where I would like to go with Macondo. The Macondo base, the horns isle
is still there and I have no motivation to change anything. The conceptualizing
and assembling of what I hav...
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Romy wrote:"...I do not know anything about your LF section. What do you use and where does it crossed?..."I have 2 ULF "boxes"; each has an 18" McCauley 6174.The enclosures are sealed and each measures 14 cubic feet. They are made from 70mm thick co...
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[quote user="Jorge"]Now if you design a TH for 70 hz, you can use it from 35 hz up to 140 hz, and that could match up to your 142hz front Upper Bass horn. With this solution you completely eliminate the need for a Folded horn midbass channel, that ...
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I haven't really thought this through, but if I were doing upper-bass horns again, especially if cut using a numerically controlled router, I might consider making tham oval, which would permit going for a horn with a lower cutoff (larger mouth) whil...
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Not only ULF, and not only the usual "dead" audiophile drivers, and not just raw amp power. My experience suggests that direct radiator drivers from 10" diameter and under claimed "100 dB efficiency" (and - especially - in multiples) can benefit fro...
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