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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I am playing with the tube traps and at this point I have a dual feeling about them. They are absolutely phenomenal HF absorbents, in fact much more powerful than any other tools I have heard. They suck HF from the room with a force of a good co...
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[quote user="jessie.dazzle"] First question:
With the 1.5 gallon rear chamber, the resonance is 700Hz With the basket sealed by tape (very small rear chamber), the resonance is 49Hz Assuming there was not a typographical error, from this we...
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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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Conditionally all imaginable loudspeakers in audio could be divided by two groups:
1) The loudspeakers where the pressure from the front of the loudspeaker isolated form the press from the back (Sealed enclosures, horns with sealed back chamber...
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I've been thinking abut this question form several angles. Firstly practical.I thought I'd better see what low bass sounds like. And to get some idea of placement possibilities. So I set up my LS3/5as in the (rather cold) un-converted barn. Couldn't ...
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I pretty much know what I need to do – I need to go for shaper filter built in my power amp. The second order I have no is too impactful to midbass, so I need to do for 2th order or perhaps for 4th and try to integrate it. Whatever it will be I thin...
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[quote user="msaudio"]
Romy If you would thank about what you are building and what it does, you would grasp the concept of my thanking. You have a 7inch hole on your bafflle with your woofer on the back side of it in a sealed box. The only...
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Well, it is not really debating but “kind of” debating… A few days back I receive emails from guy who been using PP2000 for a few month. He informed me that very much disagree with my assessment of PP2000 contribution. He explicitly asked me do not p...
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So, you are thinking about 3-way installation with GOTO bass, Lowther mid range and some ribbon atop? It is certainly no one knows how I might end up: try it, post the pictures and let know us how it went.
I can see a few points where you might need...
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Actually it is good that you reminded me about the Tannoys as behind my recent paranoia with the “Water Drop” tweeter I forgot about the beauty that blessed my life. I am taking about the “older” Tannoy’s tweeters. What is magnificent sound!
I’m not...
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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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Ronnie,
I’m sorry I was not able to detect the clipping you were taking about listening your file. However, if you can hear ANYTHING distorted at 1kHz (when ONLY your upper bass horn is playing) then you might consider the following: it has NOTHING ...
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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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Romy,Now that I am home for a couple weeks after the CES extravaganza I am listening to my system and wondering why I thought I needed a tweeter at all. For me, the problem with experimenting with the e-bay $200 plasma tweeters is the health iss...
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I except suggestions and critique. I live in Turkey and I am not living in a city, I live at the coast. It is not possible for me to go and experience most of the stuff first hand. There is no one really interested in horns or have multi-way horn sys...
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[quote user="noviygera"]Thank you for your response. I do find myself in a better position to optimize. Last thing is damping inside the chamber. Are there good rules of thumb on this, just like with volume tuning?thank you. Gera[/quote]...if you had...
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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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At Romy's suggestion I've created a new thread for this. I have been thinking about what sort of bass solution to use with the S2. I was hoping to be able to get the S2 low enough (c. 300Hz) to make this a bit easier, but it seem that onl...
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Good question, what is the actual reasonable output of Dannoy at 50Hz, no idea. To make it clearer, let me summarize my actual thoughts (possibly wrong):
Variant I (PR sub):
1. I accept 20Hz as the lowest freq a...
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[quote user="unicon"] Roman, It is interesting to see you using your pipe in room.You mentioned its wrong to use them as LF consumer. You got it somehow wrong1-sealed tube traps can absorb LF and yet again absorb all HF in the same time...2- the ...
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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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You might find it can sound better if each driver has its own box and its own port (PITA, I know). I have had better success by tuning the port +/- below audibility and then using some whimpy foam to partially block the "too...
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I used a set of 2-way near-field monitors and a decent sealed commercial subwoofer in a study room that was quite enjoyable. Mostly listened to FM. That room was not much more than 3m x 3m with lots of alcoves, slanted ceilings and a thick nylon rug....
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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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Interesting, at this stage it's early in your testing so I am mostly interested in how they are terminated. Can you provide a picture of how the fluid tubes are sealed and the cable terminated to RCA?
Tim...
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Here's a thought experiment...pick up a couple of chinese orange crate cellos - for example .. http://cgi.ebay.co.uk/Good-student-cello-nylon-bag-bow-ready-to-play_W0QQitemZ190084840261QQihZ009QQcategoryZ10178QQrdZ1QQcmdZViewItemlossily mount the PHY...
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For what I can understand, your system works as a treatment on the cones surface. In ported (bass-reflex) speakers some of the bass energy comes from the port. Should it be treated as well? Maybe since the sound coming from the port is not phase cohe...
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[quote user="Wojtek"]I have a warning that 60 years old Tannoy 10" red crossover is a sealed unit you won't be able to update and that nobody has the correct diagram of that crossover since Tannoy archive was consumed by fire.[/quote]I have a pair of...
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Hi.The top picture of a cut JBL unit shows it has a ring just below the magnetic gap connecting the central polepiece and the front plate.Although there still is a little ring shaped cavity with a triangular cross section, the large cavity is hereby ...
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[quote user="kodomo"]Here is my response for the Supravox 285-2000 in 110cf tractrix. I designed a sealed chamber and with the qtc 0.707 it is tuned to 160hz. However I hope the modified version will be even better![/quote]I think that Group Delay an...
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