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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="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="nl"] However, these sorts of basshorns with twin 15" drivers and a very large mouth (larger than the cones of the drivers) have a long history. The Altec 210 cabinet, as used in the Altec A2 systems with two 515-type woofers, is a prime ...
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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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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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There is , of course, nothing misterious in the ported speakers and the sound exactly meets your description above.The mistery for me is the decision of the designers to use bass reflex.The large image can be, of course due t...
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Well, I don't know if I should be ashamed of playing my trumpet in the closet...Actually, I practice often with a practice mute that works like a bass reflex speaker in reverse - killing most of the volume of tone but with a port to allow me to breat...
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Marc Henry-In the 6moons write-up, you mentioned the Altec 515 re-issue not being satisfactory for your purposes on the Grande Castine horn. I presume the specific 515 variant you used was the 'g' type (designed for horn loading) rather than 515'b' ...
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Seriously, those rear firing woofers (with bass reflex, driven by SET and only internal passive speaker covers) could be one point worth ridicule. The length of the cables, and size and probable acoustic deadness of the room, might be others. There...
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During the 2002 CES, late at night, a friend of mine demonstrate me something that was tying to address for a few years. It was a very different “tone” form a loudspeaker or I would rather say a different relationship between reproduced and auditable...
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[quote user="tuyen"]When i change the cutoff of the 505tt to 200hz and 250hz, I experience that same 'hole' you mention about. Hence why I was questioning if it is the 160hz le'clech horn causing this and if using the goto s150 horn with it's di...
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I am on record as not liking back loaded
horns:to be effective at bass frequencies, a BLH needs to be as long
as a FLH would be; I've yet to see a BLH, with the possible exception
of the Tannoy Westminster, that actually has a long enough horn ...
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Yes, it turned out to be the emails from GOTO importer. I am not completely understood if the horn at the picture above is an official GOTO product. The Ming Su said that the horn was build locally by Jeffrey Jackson with the support of GOTO but then...
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[quote user="Marc HENRY"] For this Musique-Concrete horn system called "Grande Castine" (it was developped in Saint Cast Le Guildo, Britanny, France, from were females inhabitants are called "Castines" ) i prefered a modified 60Hz Le Cleac'h cylindri...
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...but resistor between screen grid and plate, to my hearing, makes sound slightly unnatural, especially in highs.But this may be not true in your case (i didn't try to use this resistor with 6E5P, only with other power tetrodes), so i think i'll sug...
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Well, I may be one of the dummies here, but there are several things that could be viewed as "wrong" if sound was the primary goal:1) 95dB speakers and SET amps2) SET amps instead of DSET3) components assembled without a sonic goal - rather only comm...
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[quote user="Romy the Cat"]. What was your resonant frequency after loading? The 416 are 25Hz drivers, after loading and with two drivers it might be deep in teens. From the picture it looks like you keep the back chamber of extra large space, or eve...
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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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Hi,[quote user="Romy the Cat"]....obtaining the same extreme results by the different means, although I do not know yet if it is possible….[/quote]My point exactly.[quote user="Romy the Cat"]Also, that 9.5" woofer to do well 3000Kx and to do well 40H...
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This is kind of shit that I hate. I went to AA and read a person said:
“Don't miss the CAR room... That would be Classic Audio Reproduction. But that's only if they are showing the same basic design as last year, which uses modified JBL drive...
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What I hate usually and in audio in particularly is the situation when a professional know that s/he is able to deliver a satisfactory resale and s/he subordinate and enslave everything to this believe. Pretend you are have a house with a single ...
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The first thing that comes to mind is what is the range that the drivers will cover and what is the Fs of the drivers.
Another thing to consider is the loading type on the bass units you have.
I take it that they are sealed ? If so I would not con...
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agh..well.. i can see that you'd never be over for a beer and listen session, romy! not that i wouldn't invite a curmudgeon such as yourself.. but my own system might not make the cut!i just finished off a little 2 way bms/altec system (and i d...
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.... the Haliaetus people did not even back-loaded their driver. If it was a horn loading then I might criticize the horn profile that they selected (and I do have quite a few arguments). However, those speakers are not horn loaded at all. They ...
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Thanks, tuga, I never visited Feastrex site, in fact I thought that it is not available in English. In reality the Feastrex site is fine and gives quite eloquent information about Feastrex product and the Feastrex views. In the Testimonial...
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I have been working on my system. I post sparse as I need to listen a lot before doing any changes or decide on anything.I have changed the 1000hz JMLC horn to a 1400hz JMLC horn and the results are better. I have better integration with the Fostex t...
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This there is the last in the “THE PROBLEMS WITH HORNS” cycle. The previous threads might be found at:
Problems with horns: tweeters.Problems with horns: mid-range horns.Problems with horns: mid-range drivers.
This would be probably the most contro...
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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="Paul S"]Sure, forget the sales pitch, but some of similar might be good for fairly wide range MF. However, based on the sound sample, it's hard to say much about this one, apart from what looks like an extra load of multiple whizzers at/...
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I have been quietly listening and working on my new system. The upperbass horn can be crossed lower than I anticipated, which is great news for me. I was going to have the crossover point of 160hz, but I can easily do 120hz :) The dual tad's will be ...
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I noticed quite a few speakers, various configurations, that sounded more like a collection of nice drivers wired together that what I would call a "speaker." I mean that you could clearly hear distinct tone, character differences between each ...
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