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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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...no sarcasm was meant, nothing to "read between the lines." Several people seemed quite impressed w/ 138s in DIYaudio thread early on, said no tweeter ever needed, best mids they ever heard in anything, etc. That was part of what prompt...
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There has been some changes, so here is an update;38hz - 160hz - TAD 1601b (2 on each side) - Ported cabinets160hz - 600hz - Supravox 285-2000 Hornfabrik edition - cf110hz round tractrix horn600hz - 4800hz - Radian 850pb 2" cd - cf200hz round tractri...
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Skushino, Thanks for pointing it out. Unfortunately with all my desire to understand what CH Audio did turn to fiasco and I absolutely do not understand this LF section. Is it a duplex of 515 drivers with one loaded in this front shallow front horn a...
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[quote user="homebuilder"]...active EQ will be a part of this project, along with in room measurement. My friend will do the honors on that. I have not purchased an EQ yet. [/quote]
You might eventually revise your view about the active EQ and pres...
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Here is the set up working on trying to lower mechanical excursion w/o using large horns:5 way system. Crossover points are 40, 100, 750, 7500 the vertical JBL array 1400 mid horns have a horn tweeter built into their top. Yes the 15-40 Hz channel a...
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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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Romy,
More to come soon but a couple comments regarding bass horns ( and one on Tractrix horns ) :
The Edgar Seismic subwoofer ( 18" JBL E155-4 hyperbolic-exponential folded horn, 40 Hz Fc ) works very well in my room - much better than the 1...
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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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Yes, the ide do not let large Wilson's to go down let's say 40 cycles is probably what I would do if I own those speakers.. I would probably plug the port, and if necessary change the base driver. My point is that you need to be absolutely ...
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Antonio,Works just fine with ported, unported or open baffle. The process works on the boundary layer of the cone. This is the very thin area between cone material and air. The actual mechanism just disallows energy trapped in this zone from reflecti...
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AlloWell, I hope I wasn't threadjacking too much; as far as I see it, the best case for digital processors is for messing around with the time domain, not for x/o'g. Ah, so you feel a bit of phase shift at LF is beneficial... interesting. I've a...
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[quote user="Kerry Brown"] Yesterday a friend of mine brought over a CLIO analyzer and we graphed the impedance vs. frequency. I was surprised that the subhorn measures like a ported box tuned to 50 Hz ! [/quote]Yes, this all is very explainable. The...
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Hi Roberts, Romy and others,Before this thread vanishes in undeserved obscurity, I have a question or two for you. I understand that the issue is a complex one and should be addressed with more care and paying attention to detail than I am do...
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[quote user="manisandher"] For the past few months, I’ve been looking for a solution to a problem – how to recreate through speakers the same sound that I get through headphones. [/quote]I very much applaud to the desire to have speakers that do ...
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I have order 4cu feet sealed enclosure for two 15 drivers. It
is relatively small box but I need to hit minus 6-8 dB at 50Hz. The collection
of the drivers I have would be following: Vitavox AK51 and 15/40, Altec 416B
and 515B. I like Vitavox tone...
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I had a good listening session this Sunday. The Tchaikovsky
5 and Mahler 3rd. I shut down my ULF and was listening just with the
rest of the system. I was thinking what the hell I can do with lower knee of my
midbass. I absolutely adore what Vitav...
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For my ears, the piano is rich in harmonics that change with playing volume BUT the only way to get a louder note is with the hammer striking the strings more powerfully which always is coupled to a louder "articulation". Violins and wind instruments...
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[quote user="Jorge"]Actually a Tapped Horn would be bigger than a sealed enclosure, here is one of my first TH tests. The sound is very different than the sound coming form a Sealed encolsure. My first impression was that the bass was gone! There...
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Hi Mats,I am not using 4 on each side. I will be using two on each side. Until now I always liked sealed enclosures. However Tad drivers are more suited to ported configurations. If you do not push them to go too low and have a reasonable fs point, t...
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Romy notesQ[quote]
It uses at the buttom a regular sealed or ported box and the driver as direct radiator but they also put the speaker on the spikes and made the bottom looks like it is a horn output. Also at this larger model[/quote]On the smalle...
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[quote user="Wojtek"] Roman, could you (or enybody ) elaborate a little bit on JBL L8 and its application ? Not so much sensible info on the net besides that its a fullrange usefull in 40Hz-8kHz. [/quote]I do not know, how can I elaborate if I never ...
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Lbjefferies7 wrote : "...My curiosity peaked with Jessie Dazzle’s last few posts. I realized that, in France, he receives 220v, 50 Hz power... I was wondering if, at 240V, some of the fluctuations between good and bad electricity could be allev...
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Thanks, msaudio, for sharing your experience with Aura and Hartley. I do not have Hartleyes. I heard them I think twice but person the people did not try to get out of their playback anything that I care, so it is hard to say anything. In contrary I ...
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Hmmmm, not sure what to say in this case. From a higher view (and do correct me if I am wrong), you seem to have a general dislike for Fostex drivers. I can also sympathize that some of them are hard to listen to. In any case, you bought an exp...
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I would like to think a little about the monitors. A monitor is kind of bogus name but useful. I usually call a loudspeaker that is not floor standing as a monitor. Sometime they called bookshelf but I hardly image any loudspeaker on a bookshelf…
In...
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Ok, at this point the design idea about the Macondo’s Pilot sections are formed in my head. It will be two way MMTMM or MMMTMM configuration with extremely low footprint that would be perfectly integrated (as add-in) and “hidden” into the Macondo’s f...
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[quote user="zanon"]Romy:I was not aware that manufacturers of multidriver system let you attenuate individual drivers. I guess if you multi-amp, then you have control at that level. I have never encountered such a system so I cannot say, but if it i...
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[quote user="Romy the Cat"]And it is not that you can do it but it is a very common practice. Some manufacturers offer actuators of sometime tapping pads. I think even the largest Wilsons offer a set of series resistors for crossovers to attenuate HF...
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Romy, I picked up a pair of FX120 and F120A drivers over two years ago. I initially spent some time with the FX120 in a small 10-liter ported enclosure (similar to Fostex' recommended one but altered dimensions). After many months of liste...
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Sorry Robert, Your opening line on "Good luck getting midrange from F120A for non annoying monitors." tended to set the mood for the rest of your post in a negative light for Fostex drivers, the F120A included (at least for me it did)...
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