Nothing 100% decided yet, but it looks like the depth will be around 45-50cm.
The equation Bl^2 / Re is often considered useful in estimating the motor strength of a driver. The Beyma 12P80Nd has the highest Bl^2 / Re among common 12" midbass candidates. This may explain why SOME ears like the 12P80Nd with its low Qts = 0.15 and middle-road Mms = 56g as a high efficiency midbass. Distortion data is also very good, especially for a 99db/watt driver.
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Good comparison table
Hi Line Source
That's a very interesting idea and a useful comparison table.
I have seen a lot of your posts on various threads and I am impressed by your R&D, I like the way your mind works!
As Einstein said " Science is not what you know, its a way of thinking"
Thanks again for posting.
Cheers
Derek.
PS Is that experimental 12 inch driver in the table in production?
Hi Line Source
That's a very interesting idea and a useful comparison table.
I have seen a lot of your posts on various threads and I am impressed by your R&D, I like the way your mind works!
As Einstein said " Science is not what you know, its a way of thinking"
Thanks again for posting.
Cheers
Derek.
PS Is that experimental 12 inch driver in the table in production?
Anyone tried the Beyma 10B60 (not BR) in any kind of midrange config? Perhaps not a typical midrange?
http://www.teamaudio.fr/media/catalog/product/datasheet/beyma/10B60-8.pdf
http://www.teamaudio.fr/media/catalog/product/datasheet/beyma/10B60-8.pdf
As promised, here are a few pictures of the current system using a Fane Colossus 18XB, PHL 3451, and Beyma TPL-150H. Crossover points are 200 and 1511 Hz, active crosovers 24 dB/octave, and triamped.
Best regards
Peter
Best regards
Peter
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Hi Angelo,
I do like the performance of the system, and the sound of the PHL is not that different from the Fane Studio 8M in my conical horns, but I still feel that the 500-1500 Hz could be clearer and faster
Best regards
Peter
I do like the performance of the system, and the sound of the PHL is not that different from the Fane Studio 8M in my conical horns, but I still feel that the 500-1500 Hz could be clearer and faster
Best regards
Peter
Nevermind. Found two "new in box", dirt cheap, so I asked before thinking.
Got two more 18" subwoofers though. Five total. Are using pd.186. (one is pd.182)
I forgot to reply to the latter question, sorry!
No, I haven't tried to remove the back cover of the Beyma TPL-150 yet, but I peobably will!
Best regards
Peter
No, I haven't tried to remove the back cover of the Beyma TPL-150 yet, but I peobably will!
Best regards
Peter
Has anyone considered using Precision Devices PDN 10MH25?
I am using TPL150H in my pro audio set up but currently using 18Sound 12ND830 xover at 1.4KHz. I want to build new boxes and change driver for a 10inch so I can xover a bit higher.
Does anyone have a polar plot for the Precision Devices 10MH25?
I am using TPL150H in my pro audio set up but currently using 18Sound 12ND830 xover at 1.4KHz. I want to build new boxes and change driver for a 10inch so I can xover a bit higher.
Does anyone have a polar plot for the Precision Devices 10MH25?
I have written back and fourth with Dieter Achenbach of lsv-achenbach.de and his recommendation for the TPL is a 8" midrange, not bigger. He found the best integration was with the 8" size.
He uses the M20-2530 by PHL amongst others in his kits.
I myself use the PHL E25-3020 with the non-H version of the TPL. Crossed at aprox. 1550-1600hz if recall correctly. Very cleansounding midrange. All passive crossed.
He uses the M20-2530 by PHL amongst others in his kits.
I myself use the PHL E25-3020 with the non-H version of the TPL. Crossed at aprox. 1550-1600hz if recall correctly. Very cleansounding midrange. All passive crossed.
The diyhifisupply crescendo also use a 8 inch with the ribbon
I think its nesseceey if you want a fast mid to have small mid to match rapidity of ribbon.
Is it tru that smaller mids are normally more fast?
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I have 4 Faital 8PR200's to go with my TPL150H in an MTM configuration. Should be an interesting combination. http://www.audiomaxitalia.com/uploads/tx_ttproducts/datasheet/8PR200_datasheet_01.pdf
I was always curious about how these Faital's perform. They have earned a good reputation. Please let us know when you have them up and running, how you like tem.
Angelo
Raymond ( RayCtech ) sent me a pair of his midrange amt's for testing. I made a baffle for them ( 35cm x 30cm ). Back, its open, so it runs dipol. Today i hooked them up for the first time mounted on the baffle. I crossed them at 300hz , first order. Below,i use the Beyma 12p80Nd up to 300hz/24db.Since these are prototypes, and where folded by hand, they are not 100%, so at higher spl , at peak, there are some resonances, but nothing too much to bother. Integration with the woofer is not perfect, i will have to tweak and make some adjustments in the next days. Will do maybe also some measurements. So what are the first listening impressions? I would say, my reaction is similar as with the Beyma TPL150, when i listened to it the first time. It sounds very, lets say unspectacular. But in a positive way. It is extremely neutral,natural, open, revealing,fast, with correct timbre and tone. Voices sound simply as they should. I played already all kind of music, classical, jazz, vocals. It covers a very wide range, just as a guess, flat up to 10khz. More to come....:=))
Angelo
on the first picture, a size comparison with the Beyma TPL150
Angelo
on the first picture, a size comparison with the Beyma TPL150
