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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I was thinking about what I previously wrote while driving today... thinking about the way people "see" the function of a driver... and about resonant properties of various materials used for speaker cones... I think it is more interesting than compa...
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I completely agree that in a home setting, even if you love "Drum & Bass" and Hip-Hop, you will never ever use anywhere near 2" of cone excursion.
Romy wrote :
"...what the companies always “forget” to mention is what percentage of their excursi...
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Hello NBC,
If you have the space, and the sense of humor, go with a large pair of SEALED enclosures.
If done right, it will change your life.
Regarding the Northcreek Audio version of the 1808 : According to some research I did a while ago, ...
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Regarding vertical convergence :
I have often wondered about the effects of arranging horns vertically, such that their output converges relative to each other, toward a single point at a given height above the floor. I have seen Wilson Audio do...
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Hello Stringreen,
First, though I do use it, I think the term "time alignment" is a misnomer... We should really be calling it something else.
When you say "Time Allignment has nothing to do with the placement of instruments in an orchestra", y...
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Romy wrote :
"Did Mike consider making the driver better or he just plans to replicate what Vitavox did 50 years ago?"Here is a thought :While I am over all very pleased with the results I am able to get from the original S2s, Romy once ma...
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I was very sorry to learn that Fane has closed up shop.
Their very client-oriented service was totally out of time, even for England.
About a year ago, expecting a big "NO" for an answer, they actually agreed to fire up the "assembly line" (?) ...
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Romy,Thanks for the info on alternative manufacturers.
The resistors I found locally seem to be working super well (precision metal film... didn't ask who made them...they are all black and cost EUR 2.80 each). I may eventually replace these with RN...
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Paul and Romy,
Thanks for the thoughts...
Romy, you may be right in suggesting that I am "going a little crazy in there" (I consider this a compliment btw)... so for now I decided to try some locally sourced precision metal film resistors (Vis...
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Romy wrote :
"...You have too much gain in your playback for 109dB sensitivity... I used ML2 with 109dB sensitively and L2 with 12.5dB voltage divider at ML2 and I had no annoying noise at nearfiled..."
Ok so I made a couple voltage dividers fo...
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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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Without completely understanding the post, I listened to all the samples (which by the way, will play immediately without doing anything if you have a mac...oops!). I first ran the files through my main system (there is a laptop + DAC associated with...
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Ok, so that didn't come out right...
This part :
"...I can only speculate as to what other information went missing (or got rounded off) when using these less than sensitive drivers"
Actually there is no speculation involved; a lot of infor...
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Romy,
Your approach makes sense; I will look into fitting a "12.5 db voltage divider".
As I did not have any noise issues when using the same equipment with a variety of direct radiating speakers, I can only speculate as to what other informat...
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Ok, so I did the test (no explosions, flames, or smoke!).
Results with the shorting plugs in place :
Just like you and Paul said, only upon sticking my head (my ear really) right up inside the MF horns was I able to hear just the slightest hiss.....
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Paul S wrote :"Didn't you just buy that Englishman's Placette Active right out from under me? Use that and hear what happens."Nope it was not me... My only recent acquisitions have been three very very cool industrial-strength tu...
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Romy and Paul,
Thanks to both of you for the further input.
But...
If I do as suggested, and this removes the hiss, that's great; only one problem (forgive my slowness in understanding here); with the plugs in place, how do I then get a sign...
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Romy,
Thanks for the advice.
Just to be clear here :
When you say
"Short the ML2’s inputs and the hiss should be gone"
I assume it is not a mistake, and that you mean short the unused input on each POWER AMP (as opposed to the PREAMP...
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Well, I could not agree more.
I've had a pair of ML2s connected for the past several months. I say it like that because I have not yet seriously worked with them, as I am still building the horns that they will drive.
I connected the ML2s first...
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While I feel like the layout of an orchestra is a sort of sacred thing, I will never the less put forth the following question :
Is the layout of an orchestra time aligned?
Whenever I attend a performance where classical music is played by an orc...
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Paul,Well it would be silly for me to insist that I'm absolutely correct here, as I too am only basing my analysis only on what I see, and what experience I have been able to amass (some profession-related, a little in...
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Paul,After looking at some photos of Stock Altec horns, though they appear reasonably stout, I can believe they would still resonate when excited by sound pressure alone, as they are still on the thin side if left as bare metal.See them here : http:/...
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I see some posts predicting that the use of bronze for the Mid-Range horns (see photos above) would result in ringing... Well, I respectfully beg to differ; I think this is one area where the designer may have done well... Too bad he polished them.
...
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Ok... Assuming the lack of time alignment is compensated for via a DSP:
There are likely large chunks of the frequency spectrum that go un addressed, and equally large chunks that are mall-addressed.
I would say that there are two main ranges ...
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Romy,
Have you considered replacing the cover on the tail of your Upper-Bass horn?
...With a large-diameter circular cover, made from a more resonant material (when I say large diameter, I mean quite a bit larger than the diameter of the rear c...
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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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Yes yes yes .... Lamm Industries is a BUSINESS... This is abundantly clear whenever I order tubes from them!
But the most desirable of Lamm's past creations are not the kind of things born solely of a desire to make money.
I understand Lamm's ...
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I know Lamm is not in the business of making speakers, but from my point of view, they are missing more than just one opportunity here.
Rather than addressing the lack of excellent, high sensitivity speakers by offering a more powerful amp, would...
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Romy,
Thanks for your comments. My plan is to seal the horns once I get them all (all 8 of them) to the "ready-for-finish" state (still a lot of work to do). At that point I will try contacting John.
In the mean time, I've acquired very solid r...
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The following link will take you to images showing my construction method for small to medium-sized horns (click on the images... to view the explanations) : http://s172.photobucket.com/albums/w3/jessie-dazzle/400Hz%20Tractrix%20Horn/ Since these are...
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