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Multi-Way Conventional loudspeakers with crossovers

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Old 21st November 2011, 07:36 PM   #1
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Default Tqwt with Beyma BEYMA 12XA30/Nd simulation

Simulation on a straight tqwt. I want it to spread happines when i look at movies or listening to music in my living room (20-25m2).

Want your opinion, i have never built a this kind of speaker.
Please tell me if you´re missing some kind of info

http://www.artlon.pl/beyma/download/12XA30Nd.pdf

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Old 22nd November 2011, 04:11 PM   #2
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No thoughts?
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Old 23rd February 2012, 07:24 PM   #3
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Hi

Just wondering if you did anything more than write the posts.
1pi is not realistic, use 2pi for a more probable in-room result.

I am curious about the performance of the Beyma 12XA30/Nd, anyone heard them?
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Old 23rd February 2012, 08:17 PM   #4
KSTR is offline KSTR  Germany
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Quote:
Originally Posted by KaffiMann View Post
I am curious about the performance of the Beyma 12XA30/Nd, anyone heard them?
Yepp, it sounds like, or better said, it feels like riding a Harley-Davidson vs. any one of those modern 80ccm "plastic" scooters.
Note this is coming from a 15XA38Nd user (open baffle, but they'll find home in big ported cabinets soon). I've heard the 12" as well. Not much difference between the two, neither one sounds like typical hifi speakers (read: they DO transport dynamics and render precise tone, even for recordings where you thought there were none such).

IMHO these coaxial pro drivers are among the best suited for domestic use because the woofer has suitable specs.

@sladdbarn:
For real movie "slam" you'd probably need additional sub/infra.

Be prepared to spent considerable time to break them in (with pink noise at high power levels), and do that *before* you mount them into the cabinets

Also, beware of the tweeter when measuring it. I literally burned my ears one time when I forgot to check amp output levels.

Last edited by KSTR; 23rd February 2012 at 08:22 PM.
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Old 24th February 2012, 06:47 AM   #5
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I´ve learned a lot since this post.

One thing is that my simulation is a MLTL not a tqwt.

If i eventually will build them (i really hope) they will have a -f3db at 40Hz
because they seem to simulate better then. And the curve will be more
straight done to ~40hz.

Maybe i will build a tapped horn if i want more of the lower bass when im
watching movies.

Havent heard them myself but people on internet seems to like them a lot
and beyma always makes quality speakers
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Old 24th February 2012, 12:14 PM   #6
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Do you have to design your own crossover for the Beyma ?
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Old 24th February 2012, 12:28 PM   #7
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Quote:
Originally Posted by fatmarley View Post
Do you have to design your own crossover for the Beyma ?
You can buy crossover from beyma but i suspect if you want some serious hifi-sound you´d better build you´re own.
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Old 24th February 2012, 01:08 PM   #8
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That makes sense. Most people who buy these drivers wouldn't be interested in designing crossovers.

It would be interesting to compare them to some of Tannoys offerings (I like Tannoys).
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Old 24th February 2012, 02:25 PM   #9
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Most byers is going use active crossovers i suspect.

A Swedish company is using the 15" (big brother) in a tqwt and people
seem to like em. Lättdrivet & lättgillat! No Frills & Caveman

Text in Swedish sorry, google and you shall find
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Old 15th May 2013, 10:28 PM   #10
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Sladdbarn,

Have you made any tweaks and/or built this MLTL design yet?

Thanks
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