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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I spent some time with my back chamber, trying to drive the driver resonance heighted. I built a sealed sarcophagus as a back chamber (if somebody are interested I can post a picture) approximately 1.5 gallons but it moved Fs for 700Hz. Then I began...
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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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(Note: I've neither seen nor heard these speakers)
Cessaro ALPHA:
TAD TD-4001 2" driver on tractrix horn with 56cm bell (approximately 250Hz). TAD claims response from 600-20KHz. Given that the midbass is essentially a direct radiator (theref...
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[quote user="Markus"]There's no plasma tweeter on the Cessaro. The tweeter is the TAD ET-703. The HK owner has a gold-coloured horn for the tweeter, but there's no plasma driver. I'm pretty sure the horn on the Lansche plasma tweeter is a good bit la...
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[quote user="Romy the Cat"]Output transformer. Here is
what the thing become complicated. Of you drive ultra-low impedance with step
down transformer then your secondary turns will decrease. They primary will
have whatever they have for all case b...
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[quote user="jessie.dazzle"] There may be better drivers out there, but with my level of experience, I doubt my abilities to recognize them. So though it may resemble laziness on my part (remember, this is the same person that will be constructing a ...
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The kids are growing up and twins sleep fine and walk already.
So, the Bessnow’s household is calming down, a live-in nanny for sure helps…
With more time at my heads I am trying to finalize my playback in our new home.
I spent a few hours today t...
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[quote user="el`Ol"]A $$$ solution for a bass array that comes into my mind are the sandwich cone drivers from Accuton.Monstrous neodymium magnet, underhung voice coil (for low flux modulation).Very low Fs.Relatively low QMS for use in sealed enclosu...
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[quote user="be"] Instead of defining the ULF range from the reproduced instruments, it is much smarter to do it based on the first resonance frequency of the listening room, because the frequency response of a closed room has a 12dB/oct rise in ...
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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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It is right that when you do not have bass problem then why to do any absorption for it ...But how do you know you do not have any problem ?o0 To make it simple and easy just forget about the impedance : it happens this wayyou have distributed mass a...
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[quote user="unicon"]It is right that when you do not have bass problem then why to do any absorption for it ...But how do you know you do not have any problem ? [/quote] I was under impression that my criterion is my judgment if what I would like to...
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[quote user="jessie.dazzle"] Assuming one will not get anything under 50Hz (usable) from a 40Hz horn, I interpret the mission of lower-bass channels in the context of a horn system as follows….[/quote]
Hm, this is a bit tricky with bass. A pla...
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This weekend wife told me that I should not do nothing else
but to fix my playback and this was exactly what I wanted to do. Yesterday I took
good 14 hours to play with it, moving boxes, trying to find a good
configuration, making measurements, th...
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I have the CD but didn't get a chance to listen to the B9 effects you mentioned yet, but all the 515Bs and 15" Vitavox I have heard were in larger vented boxes. I think of the dryness you told of as part of pushing a paper driver down in a sealed box...
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[quote user="jessie.dazzle"]Upper Bass : Frequency range between 100 and 500Hz – Driver loaded into a 120Hz straight horn, driven by DSET dedicated channel. Mid Bass : Frequency range between 40 and 100Hz – Driver loaded into a 45Hz straight hor...
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Thanks, Romy, for your generous reply.
I won't try to address everything about everything, but let me bore
you with a mini-history of what is going on with my playback so you
will understand where I'm coming from and where I'm trying to ...
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[quote
user="anthony"]Hi Romy,
So it is time to think about the bass output
transformer in my DSET. My bass channel will be 8 x 25W/8565-00 each side
set in a sealed box and will cover the frequency range below say 100Hz.
These drivers can be ...
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[quote user="Stitch"] Well, I didn't come so close to answer your question right.I saw a few from the German DIY scenery and for them it was like the return of Jesus, best sound on Planet But probably they are still deaf as usual, because the Fre...
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I'm looking to internally wire to binding posts on exterior of box from woofers in a sealed cabinet. I was wondering what are some options for wiring that will not be a hinder. Would a heavy gauge copper 6nine's copper be sufficient? I'm using so...
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Miab, since what I became an expert in cables? I am as much as anyone else – a subject of accidental discovering...
I do not use in Injection Channel any fancy cables. There is not a lot of need for it. The Injection Channel is mixed with M...
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It happen that I thought that my old Sony XBR Trinitron TV when sound and I was forced to by a new one. The old TV turner out to be fine and I was stupid to be left with the new one. It is a contemporary LED TV, they say the it is the best. I say...
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[quote user="Lbjefferies7"] Now, as for your drawing of the exaggerated port flaires, it is excessive. A port is not a horn and, from an engineering standpoint, I treat them very differently. A port is a resonator. [/quote]
Oh, sur...
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Principally there are many many theories and papers about ports and how they must be calculated/constructed/placed/used. But none of these theories explains the relation of port design to the SOUND. That’s the reason why so many engineers get s...
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Honestly there is not enough info here to make a usefull recommendation. If the drivers are going to be used from the 95hz crossover point up then you might not even have to worry about it if the Fs is well below that. I would not do it anyway since ...
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[quote user="Paul S"] I have been surprised that you have not already pursued the Zarathustra for your multi-driver, sealed LF. From your early descriptions of both, this seemed like a natural pairing and the most likely way to go, to keep the ...
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If LF are sealed, I would suspect that the strong SS/hybrid would be better able to keep the drivers "off the air cushion". When the drivers get to that point I hear something I would describe like this: Take your fingernail and...
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As some of you know I’m playing last couple days with Red 10” Tannoys from 60s. My selection of 10” was not accidental -I would like to get as less as possible of that “Tannoy bass” but I did run very far the “Reds” turned out to have 27Hz open...
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I am using them with 200 w/channel SS amp in very large sealed cabinets. The room they are in is quite large and the honey bass has been less of a problem than the MF tone. When I play my bartoli baroque CD (live in italy), dynamics...
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Well yesterday this miserable Catographer was cleaning out his garage when he made a instructive discovery in the beer refridgerator out there. I vaguely remember un plugging it in April during a suspect electrical project, but what I ...
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