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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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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 was rushing when I made the last post. Wanted to share a little more about my thought process and how I arrived at doing another large-scale masochistic audio project. Making a bass horn is a huge risk - the results can vary from exceeding expect...
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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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Here is my proposal for an ideal horn system. The concept derives from the really of the horns as I know them, the available park of the drivers, the drivers’ real capacity and from… everything else that I might comment upon if you would not figure o...
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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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[quote user="jessie.dazzle"] Regarding the Mid-Bass : If these guys are using the main block as a Mid-Bass horn (as Romy's illustration suggests), then the story is getting interesting, and the plot is definitely thickening... It would however seem i...
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Thanks Romy, I'm using a TAD 10" mid in a sealed box to produce 200hz-800hz. Although I'm fairly happy with it, I'm hoping a compression driver/horn would give even better results. There aren't a lot of ready made options for 200-800hz so I chose Got...
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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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Now that the preliminary excitement of my ingenious idea wore off, I'm ready to share it and accept the harsh reality of any shortcomings... but seriously.
For a while now, I've been been working on optimally integrating my 3 channel...
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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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[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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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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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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The exceptional 15-inchers would be two fitted in two categories: the bass 15-inchers and wide-range 15-inchers. It is imposable to think about the exceptional and wide -range 15-inchers and do not mention the 1946 -1973 production of the Tannoy Dual...
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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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Romy, i hope this post doesn't offend your sensibilities. I am not gonna say a word about the physics principles that have led me to the conclusion that this is something that should be tried ( unless you ask of course ).
The idea i have is...
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Pretend
a driver diaphragm, any driver. From front diaphragm "sees" the horn
throat and the mass of air in the horn that diaphragm needs to
"push". This creates let call front spring. If a driver has a front
chamber than let discard it for now. ...
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[quote user="Gargoyle"] Romy the Cat wrote: Scott L wrote: the last time I checked, you were using 6each
@ 10 inch low frequency drivers per side. That's "getting there" but
still not enough to produce an acoustical watt. (which horns CAN do).
...
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[quote user="Kcct82"] I know you're not a big fan of digital delay, but I'm using behringer DCX 2496 to make things easier... this way I get to keep all horn mouths on the same plane which avoids some reflections (from other horn mouths). [/quote]
S...
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[quote user="Merlin"] If they are modifying conventional drive units by hand, the labour costs alone can be prohibitively expensive. The fact that they are using heavy Alnico magnets and coating the diaphrams suggests that these units do not co...
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The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
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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="Saturntube"]Similar experience but I get to keep my "old" room. I have just changed my 5 way horn loaded down to 140 hz speakers to a friends room twice as big as mine, with an open back area into the house as your new room has and o...
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A guy read my site and sent me a series of emails complaining that it is too difficult to found Imbedded positioning for his new bass horn as it is too big and too balky. Moving the large and heavy thighs and measuring them is the hard. I agree, but ...
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Hello all,Some time ago, I bought a pair of very early production ML2s for an ongoing horn project (see "Note at end").Rather than just let the ML2s sit and wait for the horns to get done, I of course tried them out with my "normal" 89db/watt@1m spea...
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Once you establish that you are for sure on the right track with the whole idea of the Injection Channel, it would not be such a big deal to cut and extend the vertical mast of your Macodo frames, moving your Fundamentals Channel up... You could have...
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I’ve been harassing my horn-maker for quite a while with an idea to go for straight, no-cheating 45-50Hx horn. We discussed it countless times and sometime probably we would go for this, and particularly if I figure out how to resolve the delays prob...
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[quote user="coops"] Cessaro will be playing …. the full Gamma system at next years Munich show….[/quote]
Since I promoted the Cessaro Gamma to be a contender for the most promising commercial loudspeaker I would like to pass a few critical co...
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hello again Romy, cats, friends...
I built this horn for Ming Su, the Goto USA importer... I have posted on your site before about midbass and bass horns... I listen to eight foot straight 45 Hz horns... and as partial payment on this commission ...
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