Camplo
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Posts posted by Camplo
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Actually group delay does change with input level.... the Q of the drivers change with excursion also ☺️ Thd also can be looked at as affecting transient response. Its just that the distortions, thd and others seem to set in similarly... which makes sense being that we are dealing with reaching the outter limits of xmax and the surround.
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OK heres a THD reading at 115db-ish..... This is the woofers at the bottom of the picture in the PPSL...just the left channel...
I will do one of the 15" midbass but I'll save that for day time.... That thing is a full range speaker almost and I'm not doing 115db with Axi right now, inside....but I already showed the outside measurement at 115db which is much more preferable anyways...It'll be cool to see the 15" in combo with the 18"s also.....At least to me....I don't think you guys are into this stuff like I am lol,
I put a 2nd order buttersworth low pass at 45hz and cranked the volume.... Theres no voicing and its in a random room so don't expect a nice pretty and flat line like you might get from an anechoic measurement.
you can't compare these to the Jubilee's bass bin thd measurements.....they don't exist. Thd is the signature of mechanical strain, less is better.
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3 minutes ago, OO1 said:
they look like the type of speakers made by Lansche Audio ...
Lautsprechermanufaktur Heyder
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8 minutes ago, Islander said:
That’s how you’re coming across, whether you realize it or not. Can you see how that might be a problem, and that it could cause problems?
Understandable... from my perspective... if you were a true lover of cars, the first thing you would have done as an owner would be to take it to the dyno.... it just depends how passionate you are and how far down the rabbit hole you want to go.... for another car lover just owning the mcLaren is enough... he just likes that its fast and attracts girls... different strokes for different folks... but I'm more the first guy not so much the second.
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1 minute ago, OO1 said:
can you tell us more about these speakers and horns , since you posted these pictures , is this your design ? are you in the USA .... let's take time to speak of what these speakers can do
German made, its just a big elliptical tractrix horn of wood. Cutoff is supposed to be 150hz....
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8 minutes ago, Khornukopia said:
Just the standard.
Thats not "the standard".... its "a standard"... I can try this inside if youd like.... but the measurement will be clouded with the rooms response.....Let me eat my food first lol
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1 hour ago, Khornukopia said:
The acoustic output measurements of your bass cabinets in your picture.
I'm sorry I didn't mean to ignore this post... I've been too lazy to drag my woofers into the back yard but I will eventually and I'll share them. No biggie right? Theres another valid measurement we could do to compare woofers... measurements taken with a few inches of the the source... kinda hard to do with the jubilee and its dual mouths. Ill still take what I can get... If I take a close up measurements any particular level you lookin for?
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24 minutes ago, Islander said:
specific tests to be performed at “stupid loud volume”
a sine sweep at 115db is pretty loud, I'd recommend using hearing protection or just do it outside....The Jubilee is rated over 120db max so its shouldn't be a struggle for it. THD readings are a common performance rating....thd at 115db/1m is a good metric to rate a top shelf high efficiency design. I think we established that you are on the customer side not so much the design side of things.... You may not find such measurements interesting, entertaining, or relevant....and thats ok lol!
Me "buy this truck!"
You "how fast is it?"
Me "really fast, just trust me"
You "I really like you and other people do to.....I'll just take your word for it....How much for the truck?"
Me "1million dollars"You " well it must be good if it cost that much.....I'll save up my money but in the mean time could you please share how fast the truck is?.....Like whats its 0to 60 time, 1million is a lot to give someone without seeing some detailed data!!!!"
Me "Sorry I can't share that.....just give me 1million dollars and then you can test it yourself! I can have someone drive by us so you can see how fast it is but we can't let you know the actual speed ok?"
You "ok!"Lol!!!!
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9 minutes ago, Islander said:
Why don’t you
I'm pretty good on my own but thanks for the suggestions lol....
I asked for Thd measurements not a life coach lmao! -
5 minutes ago, ClaudeJ1 said:
OK, I stand corrected on my assumptions based on limited data. But simulation is not the same as building. I have done both. Also, while simulation get you in the ballpark, there's not getting around SOME sawdust, iteration of prototype tweaks, and the hardest of all going to PRODUCTION, which a guy like you has the privilege of bypassing.
once again, we agree....
Remember, all I asked for was does anyone have some THD measurements of the 2nd gen Jubilee lol! All hell broke loose lol
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7 minutes ago, Tom05 said:
Yea but your referring to your simulations , I wouldn’t have any confidence in those , lol giggle giggle
Sounds like you don't have much going for yourself....I mean what else would someone like you be doing, besides trolling me.... I'm some random person on the internet, whats your interest in me....nothing else better to do is my bet. Probably for a long time now lol
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3 minutes ago, Tom05 said:
Simulation only gets you so far in speaker design , so does your artificial intelligence lol giggle giggle
Simulation led to design of the Axi2050 and every other new product you'll likely see come around the bend....You can down play it but everyone uses it now....wiggle wiggle
it will get you only so far....much farther than those who don't know how to do it lol
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5 minutes ago, michaelwjones said:
LOL; read the reviews of Bill's creations; including the Snail which he asserts is a "superior" design...
https://www.harmonycentral.com/forums/topic/188508-bill-fitzmaurice-plans/
You need to reconsider your sources.
It was random really but the link you shared is all speculation, and no measurements so still not very objective. I don't want to build one of Bills horns but I do recognize that Bill is an expert on cabinet bracing.......
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If by pissing you off, you mean " asking for measurements" ....not a chance.
You assemble the speakers? what does that even mean? Like a kit? A kit isn't a recipe....Like you had to assemble the cabinets from scratch? You are never very specific it seems.
The DSP settings he gave you were made custom for your room? why do I doubt that, unless he came to your room, and took measurements and created a voicing made specifically for your room and listening position and speaker position.....You are lacking sir.
The proper way is to take measurements and create a voicing yourself, in situ, using a measurement mic, ears, DSP and know how. -
I already posted a measurement of the Axi2050 on my horn at 115db/1m, in the very first post I think....
any thing else you'd like to know lol
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4 minutes ago, Khornukopia said:
I would like to be aware of that forum rule. Can you show us where it is written?
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Interesting.....Bill may have designed something similar before the jubilee (2nd gen) came along.
https://www.audioasylum.com/forums/hug/messages/18/187375.html
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2 minutes ago, Tom05 said:
The basis for my statement is the ridiculous arguments that you made with Mr .Delgado, a highly respected horn speaker designer. You really revealed yourself , but don’t seem to realize it
which statement in particular, are you speaking of, that is ridiculous to you? I'm curious to see the validity in your claim.
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1 minute ago, Tom05 said:
You sure giggle a lot for a horn fanatic , lol lol lol lol lol giggle giggle
trying to keep it light hearted....Also show how unbothered I am....lol
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one of the Forums rules is likely, not derailing a thread.... If you guys can't try to stay on topic and try to add meaningful content to this thread...a moderator will have to correct you. 😃
if you don't have measurements to show or discussion surrounding measurements....I am talking to you lolIn other words...if you are not a fan of the Topic of this thread....measurements...Good bye lol....No one is going force you to view my thread...walk away....vamoose rofl!
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3 minutes ago, Tom05 said:
You exaggerate your intellect.
You have no basis to be confident in that statement lol... you exaggerate significance lol
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55 minutes ago, ClaudeJ1 said:
If you are trying to assess a full on 125 db curve you are not talking about "Transients."
As the OP says I asked for 1m/115db.... but trainsients and headroom room is only relevant to the Average level.....And spl decreases over distance.......So its also a matter of a persons desired listening distance and average spl.....I can enjoy listening to 90db range and that easily puts transients 10-20db above that.....if that was at 1m and then I move back to 4m, the spl needed to reach 90db at 4m increase significantly as far as what that spl/distance looks like at 1m....
without context..."home" could mean many things..... -
37 minutes ago, ClaudeJ1 said:
Easy to say for someone who has never actually designed a bass horn.
If you study loudspeaker design long enough you'd see where I am comin from....that is all.
Simulation is the next best thing...saves a lot time and money too....I have designed bass horns in the digital realm. The same place most manufacturers start their designs as well....
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1 hour ago, Tom05 said:
If you really want the data ,then test them yourself, only you can reliably capture it ,and only you can verify that the same calibrated test equipment was used for both speakers including microphone , location exactly the same , test procedure exactly the same , all test variables exactly the same . Data from another source would be highly unreliable, only you can verify that your test procedure was fully followed. Unfortunately any test data that you would receive would likely be of questionable value and not very useful for direct comparison to other tests done elsewhere , good reliable test results require scientific controls . Let’s face it speaker specs are notoriously unreliable.Test it your self , report your findings.🤓
Yeah thats an exaggeration of the truth...
Jubilee thd @ 115db/1 meter ?
in 2-Channel Home Audio
Posted
Heres a measurement of the lower bass bins, close up. Less room in this measurement,
Khornukopia
Whats your point? It seems you are not sure what to do with the measurements? I took a measurement at 1m, at 115db, and I posted it already.... That measurement wasn't to show FR, considering the room is going to destroy the response due to reflections..... I didn't take time to voice the drivers and in combination with room influence...the response looks crazy....Even more confusing is the increasing sensitivity into the midrange of the Acoustic elegance 18h+ and the slot cancellation.
Long story short....after voicing and considering an anechoic response, I can get a pretty neutral response. under 2.5+/- with not a lot of filtering. The bass bins seem to fit well, till about 65hz, and then the mid takes over....
I posted the last measurements to show a response of the bass that was more like an anechoic chamber.......I don't have an anechoic chamber so I have to put the mic as close as possible to the drivers/exit in order to hopefully drown out as much room influence as possible.
Do you understand now?
I would love to continue the conversation here, but the moderator/designer has chosen to limit my posting to whatever he finds appropriate...I've posted several times regarding details and loudspeaker design and the moderator never approves them....I think he's intimidated by my knowledge and doesn't want me to put his design under the microscope which might affect sales since this forum is basically a sales front.
Catch you guys on the flip side!
Anyone wanting to learn a lot about loudspeaker design so that you too can judge speakers in the most critical sense, come on over to DIYaudio dot com where there are plenty of talented designers.