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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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of MTM arrangement of two TAD 1201 in <100 Hz Horn ? I assume they would both work in the same frequency range . Also JBL LE8 is only 89 db driver and it doesn't look like it can take any power . Difference in efficiency within the channels would ...
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One thing to bear in mind with the bass horn delay - I thank Tom Danley for explaining all this a while ago - if I understand it right, a small direct radiator (ie small in relation to the wavelength - which will obviously be the case with ...
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Yes, the "bottom drops out" of the "IB" depending on whether or how it's "opened", and one way or another, the cabinet may or may not "assist" the driver at some point. This is where one has to decide how much to ask from the particular driver or dri...
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Ok, I said a mistake, I like direct radiator (sealed speakers) too, but I often noticed more dynamic with horn speakers (I like every speakers (if properly tunned) except speakers that radiate with both sight of the drivers (bass-reflex, tapped horn,...
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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 one side and the front have hu...
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Well, the only thing I can think of is to seal them and keep 'em that way. I've made only a couple of vented enclosures and they have all ended up being sealed or severely aperiodic. Even if the Mini's are moved back, it is unlikely that they would...
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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 wired anywhere between 1R an...
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hello kids, a few weeks ago i started my hunt for a pair of speakers....i've been attached to my big system with a pair of headphones for the past year and feel its time to get some speakers to listen to music with (plus, i think my ears are now...
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A little update on the Milq amp.After sorting some of the problems with the amps transformers (see posts above ) .I now have two mono blocks operational that have about 700 hours ,I'm so glad hour meters were installed .Filament voltage is spot on 6...
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[quote user="noviygera"]My mid/upper horns play down to 190Hz. That is -- 188Hz is the Fs of the mid. It's a horn loaded a 10" Precision Device driver. So I need a section (or two sections) to cover the bottom (below 190hz). [/quote]
Herman, i...
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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 8" B&C midrange dr...
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I need to care just one octave at my 25Hz bump,I have tried the same solution in a big room, the thing is that we not only got output at 25 hz, but a lot also at 50 hz! There was no way surgically cut it to what we needed and the result was it messe...
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Hello Anthony,I did experiment with metal tubes for bass in a sealed configuration as you are planning. The weight of them, even made out of thinner than you would like steel, is prohibitive. If you make them out of aluminum pipe, then it could be b...
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Since I last posted there has been some progress to my indoor and my outdoor systems. Indoors I have added a pair of tapped subs. I must say that I am quite happy with these. Of course they are not as good as full size front loaded horns but still a ...
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I've managed to make my own room treatments thus far, all bass oriented and although some broadband absorption has been used the bulk is effective 30hz - 500hz. It is an architectural type of solution where I have a covered the front and side walls...
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As good as my ULF turned out to be but purely conceptually it is not an ultimate proper playback solution. I have midbass horns runs down to 42Hz and ULF kicks in at 25Hz with 3rg order. In reality does to the geometry of my room and the fact the dis...
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I have also a fondness for this design which may well suit your room with the line sunk in your basement. It is interesting that this design makes use of two woofers in push-pull configuration as well as making use of a transmission line. The only tr...
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Romy wrote:"...I use 10” but they have free air resonance of 19Hz. Not any of 18” drivers have such a low resonance..."Well if we can believe the manufacturer's spec sheet, it is possible to get close; McCauley claims a free air resonance of 20Hz for...
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You and I now have what seems to be very similar situations; similar MF and HF channels, in a room of similar size. However, I still have no operational dedicated mid-bass channels; you do. I have dedicated lower-bass channels; you do not. As is ...
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Richard, I absolutely agree with you that dipole provides a masking affect from many problems but along with illumination of the badly reproduced bass dipoles inject into music a common denominator of… dipolenisness….. and this something that ...
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Hi all,In my experience it is VERY hard to get anything resembling realistic bass from a vented box, particularly with a Q of around 0.9 or 1. There is too much stored energy in the system and too much overhang. The best bass I have heard...
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Gregm wrote:"Basically
I'm worried about a Lowther playing down to 150 and, if I cut the L
higher, I'm worried about the woof trying to play up to say 200."I have often wondered why one would want to ask the driver that plays into the 100 to 400Hz ...
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This weekend a local audio guy came to my palace and was bitching about his bass. I have small 1 cub feet pair sealed foxes with 8” version of my 25W drivers, I think they are 21W. I used them on the side of my bed to allow my old Koshka to climb in ...
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Datubie,
I do not think you should have a lot of expectations from Japanese GOTO office. I do not know how about the drivers but I would doubt their practical experience in system engineering. Their exponential trumpet horns are very poor. Their “r...
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[quote user="Chirag"] The more and more I listen to reproduced music, the more I realize dynamics and tonal respect are key to start any reasonable installation. [/quote]
Not kidding?! :-)
[quote user="Chirag"] My Tannoy 10" sealed box (not tannoys...
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.... in home systems for Room correction and general system EQFolks,This is from my own Yahoo group, but may be of interest here....Since writing this I have in fact changed my speakers to dipoles and do not currently use a PADEQ (it will return thou...
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[quote user="Michaelz"]I know that piano sound board is very expensive. How ever, one can get brken old upright pianos for free, or for very little (except you need to have a truck to move them. No clue for lack of time though:^...
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[quote user="jessie.dazzle"] You might be able to get away with a bit less; if I remember correctly, my calculations at the time (based on the above driver) yielded a theoretical ideal volume of something like 23 cubic feet (sealed), so still not...
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Romy, are you saying McMasters-Carr does not have anything you can cut and/or bend and/or punch to your requirements?Otherwise, you know my view on the sealed LF; they just soak power, so why not give it to 'em (and then some!)?That ought to about pu...
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OK, maybe I got too zealous with the notch filter for the Reps. I aimed to bring it down 6 dB at ~2.2k Hz, using .47 mH and 10 uF against 10 Ohms for the notch, with the Reps itself at 7 Ohms. Right now, drums are too backed off, there is no "hair"...
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