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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="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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[quote user="haralanov"] Congratulations you have found and use this principle, otherwise the back chamber acts like pneumatic brake for the lower working range of the diaphragm! [/quote] Actually it shall act as “pneumatic brake” in a compression dr...
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[quote user="Paul S"] Are you planning to drive the SS lower than the frequency gained by the box? I don't remember the older drivers having long Xmax and/or high BL, or high mms, so multiple drivers and likely more power, not to mention biased X/O, ...
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I've had a pair of PM4 and GOTO SG30W sitting by cupboard for several years now and instead of just watchinng the foam rot on the Lowthers, I was thinking of slapping the lot into a sealed box for fun. The PM4 would have it's own chamber of course.&n...
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Yes, Sakuma seemed to enjoy delivering some It via "old methods". But he was able to do it not because he used the old methods but because he could use his ears to home in on It. For many years I used Fulton speakers, and Bob Fulton was another one w...
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[quote user="oxric"] "The Macondo’s Bass Channel is line arrays. The arrays employ religiously-sealed enclosures with six “spotted” Scan Speak 25W/8565-00 drivers per channel... " Clearly you had written this at a time when you did not really underst...
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....obtaining the same extreme results by the different means, although I do not know yet if it is possible….T, I do not think that it is possible to get from 9.5" woofer and passive radiator a good sound in context of small monitor. A passive radiat...
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[quote user="RonyWeissman"]… i play guitar….[/quote] If you play guitar than do you know that you might affect harmonics of your upperbass by placing your guitar between your listening spot and loudspeaker? A guitar is a very powerful Helmholtz reson...
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[quote user="Romy the Cat"] noviygera wrote:p.s from my experience of having a 500 sq. ft. listening room with 7 ft. ceiling and having two 18" woofers in a infinite baffle configuration, it is not enough to pressurize the room. I am talking about lo...
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I would like to add this driver to a good driver list:HiVi D10G 10" Kevlar/Paper Woofer, it is sold at parts-express.com and it was one of a few drivers that I ordered for a personal shoot-out. Ignoring the fact that it is yellow and that it makes hu...
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OK, that all makes good theoretical sense, and the theories are borne out in terms of sound with OB, BR and sealed LF. But how many people have heard a long horn that was not compromised in fact by what could generically be described as "self-noise"...
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Romy wrote: "...I still do not know why you have weakness in 80-160Hz octave. Your upperbass shall cover it perfectly fine..."The last time I measured the upper-bass horn, it started tailing off just below the horn's physical cutoff (115Hz); lets see...
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I agree the dipol is generally a wrong direction for entire speaker system but I thought it a good way to evaluate a specific driver's sound and character. I am I wrong here? The box should only increase the bass range and provide additional damping....
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I finally set it up new Tannoy Red best Twitters. They are sealed irregular shape and purely themselves do not sound bad. They do not have the full range feeling as they had with passive radiator and had a typical red sound of late Autumn leaves....
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[quote user="jessie.dazzle"]Next time I'm making them from a double wall of 3/4-inch plywood sandwiching two inches of sand.[/quote] I do not know if that would be truly necessary. For sure it will not hurt and will be better but ULF that works with ...
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Here's a pic (link) of my listening position.When I built my large Bill Fitzmaurice bass horn...I had thought about placing it in that space above the speakers, firing into the corner. I may still do that...but the sub is serving duties in the separa...
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Thanks for posting the Vandersteen interview.It inspired me to try once more to tame my TAD 1601sthat reside in sealed 3cuft boxes. It worked, but the numbersare slightly shocking. 12mH translates to 100Hz, and 25 uFon 4 Ohm Altec 290’s in 260 Hz hor...
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(I screwed my first attempt to respond by trying to get fancy with the code, so here it is again)Romy the Cat wrote : "...there is another solution that you might consider, that might be viewed as compromise for one-side as might not be view is compr...
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My man, I am convinced that all you need is time (OK, and money...), and soon you will be dividing that time between full-tilt Beowulf in your lair and spending the ticket money you've saved (clever you!) on La Tache&nbs...
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Looks like the phase response is quite complicated, with two phase flips between the knee and the Fs notch, but the PR phase eventually comes back to be in phase below the Fs:
"I
am sure we have all heard that a passive radiato...
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[quote user="noviygera"]I thought I'd let you know that I ordered four of those Aura subs. Thanks for the advice, if I receive them (I hope so), I will install them into my new listening room. This will take a while because I still have a few mon...
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[quote user="jessie.dazzle"] In the case of a normal ranch style home (one level, no basement) out in the burbs, the attic is wasted anyway; you could put it to use, and if necessary, modify the roof, letting the drivers live up under decorative ...
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Well, I do not like any
none-sealed enclosure. From my perspective IB box is also sealed and I am not against
it. It is not about the sealing of encloses but about absence of contra-phase feedback
that is always there in any other topologies. Ther...
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Ronny, it is funny because I was juts about to carve my further observations about the Sound of my monitors. Last night I was listening Rigoletto by Callas and Gobbi on my monitor. I come to an interesting observation that I would like Monitors...
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Playing with B-2 power amp I made an experiment and instead of loading to it the MiniMe Bass section I loaded the B-2 with Macondo’s bass arrays. I made add-hog attenuator and coil to EQ MiniMe MF with Macondo’s bass and gave some listening. It w...
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What would be most interesting would be to capitalize on the possiblity you have to make use of the basement volume as an enclosure for the lower-bass channels. This wold however, almost certainly introduce floor vibrations requring that you find...
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In reference to:
http://www.goodsoundclub.com/TreeItem.aspx?PostID=1414
I had recently a guy in my listening room and he asked me if it would be possible to get the 300Hz range in the way how it sounds in my room but without using those larger uppe...
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I realize that some people have been raised from infancy with the Lowthers, take them to bed, etc., so I do not mean to do anything here other than air some recent thoughts on the subject and perhaps get a discussion going about these drivers and pos...
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Romy wrote :
"...extend HF and LF response very frequently masks out a poor performance in “simple” 60Hz and 12KHz range..."
Yes, in my esperience this is most dangerous because it can end up sounding sort of good.
In my on-going full range ...
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[quote user="mats"]Too late now for points, but just the other day I tried to imagine your plan. and I was pretty close.Actually, it is a bit like what I have going now; 15" Eminence bass guitarr woofers in a sealed 3 cu ft cabinet,Oris 150 with...
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