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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="kodomo"]
The acoustic power shows the SPL.
[/quote]I don't think so...it is kind of average...Try Acoustic Response at 0 degree! Choose Tools/Directivity/Response/0...
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[quote user="kodomo"][/quote]Kodomo, can you show parameters page of your model ?I think your real curve will be in 300-1200Hz range, not in 120-400. So, this driver/horn is good to replace your MF channel. This is what I plan to try in 200Hz LeCleac...
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[quote user="Jorge"]I tend to like drivers with plastic suspension. Radian makes retrofit diaphragms for JBL with plastic suspension, maybe they will help you achieve the tone you are looking for.
Extensions are easy to machine out of aluminum, eve...
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For now I'm quite sure about one very important channel - 1200Hz+.
JBL2453 in 550Hz LeClech horn works perfectly for me!
For the lower channel 500-1200Hz I've tried the same driver JBL2453 in 350Hz Tractrix and result is not bad, but not pe...
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[quote user="kodomo"]I don't think you can align the tapped horn. My tapped horn has a total length around 5 metres. To time align that with my other drivers, its got to be around 5 metres closer than others. The only other solution is delaying the r...
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What I can say after audition of 2-way system with GPA 288 in 350hz horn and JBL 2453 in 550hz horn is that I like the sound without GPA 288.1-way JBL 2453 sounds terrific and 288 can't match that level.So, driver for 1200hz down is under considerati...
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I come up with the idea to introduce 6th channel and add bass array in between tapped horn and upperbass horn. Benefits:1. I can use 1st order lowpass for Tapped Horn at 15-20Hz2. 30Hz+ range become time-aligned3. I don't need to go very low with upp...
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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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[quote user="kodomo"]I am using sealed bass arrays of 3 per side. I have six 10" scanspeak woofers in total. I aim to operate them from 38hz to 160hz with qtc 0.707I also have a tapped horn that I am using with my current horn system. It is 244cm's h...
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[quote user="Romy the Cat"]Well, I would advise you do not order any horns with aiming 2490.
Get the drivers first and order the horns AFTER you feel that the driver
satisfy you. The fact that the loaded driver can hit 300Hz does not mean a lot.
Y...
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I found 2490, so very soon I'll test how low it can go in JBLs 1x1m mouth horn designed for 2490.Also I've decided to order 270hz LeCleac'h horn from Poland (http://horns-diy.pl/horns/jmlc/jmlc-270/).If it works well with 2490, I order custom 240hz f...
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[quote user="kodomo"]I have also designed my bass horn to operate between 160hz and 600hz and it will use a supravox 285-2000. It is a 110hz cutoff tractrix horn. However I found out that, there is a modified version of this driver that suits my purp...
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[quote user="anthony"]It is a compression driver with an 8" cone. If you want authority at 300Hz you will need diaphragm area. The Fane Studio 8M that Romy and plenty of others use for 100Hz up to 1kHz is an 8" cone driver on a 4" throat with a clo...
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[quote user="anthony"] Murataltuev wrote:So, the question is still opened: how to get 300-400hz.Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz tractrix horn with a...
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Want to share what I got with 1st order.Next step is to build 240Hz LeCleach and try JBL 2490 in it to get blue line down to 300-400....
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Today LeCleach 550hz arrived together with another round horn - Jabo KH-53 (350hz).I've measured 3 drivers in 550hz horn: GPA 288, JBL 2453 and JBL D2430K D2.JBL 2453 really impressed me. This is definitely best driver I ever had!Tone is perfect and ...
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Thank you, Jorge, for comment. I'm definitely going for wood horns. For my ear it has no coloration in compare with other material. Only for experiments I'm using what is available ready.Regarding driver for 300Hz, which one will you suggest to try ?...
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[quote user="anthony"]The large 42Hz horn would probably want to be crossed over from 160Hz-200Hz at the most which would leave the top octave of the horns range for attenuation. So what you really need is a horn from about 100Hz to go above it...no...
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[quote user="anthony"]EDIT: Not sure we are on the same page regarding frequency range for this horn[/quote]Well, I don't have any other options.My 42Hz upper bass horn has flat frequency response in 70-300Hz range and -5db in 60-400Hz, so I need ne...
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I have one question, may be someone can suggest.My lower mid channel starts from 400Hz, so I need at least 200Hz horn.For now I'm using 2m long 100Hz horn, but because I don't know how to integrate this horn physically in my new project, I'm going to...
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Yes, there are a lot of paths.I can see that many DIYers are very much stick on crossovers, changing capacitors, choosing slopes in digital filters - FIR or not FiR and so on.I know very experienced people who now say that with digital crossover he d...
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[quote user="Romy the Cat"]Do not worry, you won’t be happy with your new speakers
as well. It is a little dirty secret that no one told you yet: speakers do not
give happiness. [/quote]In my case only speakers can give me happiness, because with e...
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[quote user="Paul S"]Murat, this latest information from you has gotten you farther along than you might suppose at this time. From what you now say, it sounds like 6 months would be a minimum amount of time for you to spend getting a sense of the S...
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[quote user="Romy the Cat"]If I were in your situation and have 2m long 100Hz horn that
I like then I would not dive into any 200Hz la-horns. Make your 200Hz horn up-to
let say 1000-1200Hz. Then take your 550Hz and run it from 1200Hz to 10.000 and
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Well, I read somewhere here, when you suggested to start from general configuration and horn design.
Do you suggest first to choose drivers ?
I have 2m long 100Hz horn which covers 200-4000Hz and I like it very much, but 2m is too long for ...
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[quote user="Romy the Cat"]
Murat, I absolutely do not relate to your reason. In fact I think this is very artificially contrived rezoning. The true reason is that you like 555 driver that happens to go to 5K and you would like to sell to...
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Just some of the designers idea :)TH removed!...
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[quote user="Paul S"]Murat, that's a lot to ask from one driver. [/quote]1000-12 000 is 3.5 octaves.300-3000 is a bit less.[quote]In any case, if you do get useful results with the paper driver, you will have to turn right around and integrate it bac...
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[quote user="Romy the Cat"]I do not feel that fundamental
range has to be that wide. It for sure could be if it is your objective and I
am sure you have your reasons.[/quote]For now I have only theoretical reasons.If to consider frequency range of ...
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