new Beyma 6.5" coaxial

el`Ol · 30th June 2009, 02:53 PM

Hello all!

There is a new small Beyma coaxial that aims more at wide frequency range than on high sensitivity and so is suitable for compact hifi solutions.
http://profesional.beyma.com/ingles/...X200Nd_tec.pdf
The 65 Hz Fs and the strong motor seemed to be ideal for a ML-pipe, so I did a simulation with an old MJK sheet. Cross-section over the whole length was 2xSd, length 132 cm (quarter wavelength of Fs), port dimensions didn´t seem so critical.
Looks like a true fullrange solution, and that with a high-WAF slim coloumn.
Opinions?

augerpro · 30th June 2009, 03:17 PM

Cool. Anyone in the US carrying these yet? On a related note, any other decent high-ish efficiency 6.5" coaxes available?

Pano · 30th June 2009, 03:37 PM

Interesting driver.
The off axis response looks superb, if the plot can be believed. Wonder how they crossed it to get that?

Not going to be cheap, one would think.....

badman · 30th June 2009, 04:21 PM

Oooooo

I've always thought that a coax should have a relatively long horn for the tweeter, to eliminate the (moving) cone loading the tweeter output.

-_nando-_ · 30th June 2009, 04:46 PM

Quote:

Originally posted by panomaniac
Interesting driver.
The off axis response looks superb, if the plot can be believed. Wonder how they crossed it to get that?

Not going to be cheap, one would think.....

You can believe Beyma's plots... I've been working with Beyma units, and it's awesome.

Inductor · 30th June 2009, 05:52 PM

On a side note also file this interesting one, on the same tecnologie (n/coax).

Beyma 6P200Nd
http://profesional.beyma.com/ingles/pdf/6P200Nd.pdf
Price 90.00 euro no/tax.

Price for BEYMA 6CX200Nd COAXIAL TRANSDUCER is about 148.00 euro.

Lindell · 30th June 2009, 07:25 PM

I've made a pair of prototypes:

.

After x-over and eq and stuffed port

.

Step resp

.

on-off/axis

.

Slopes

.

Glorified Hi-Fi curve

Retail price is 220 EURO.

Sound is excellent. Amazing low end respons. It's a bit tricky to get flat and smooth sounding. But Beyma's original curve's are pretty fair.

Highly recommended

badman · 30th June 2009, 07:34 PM

Quote:

Originally posted by Lindell
I've made a pair of prototypes:

Retail price is 220 EURO.

Sound is excellent. Amazing low end respons. It's a bit tricky to get flat and smooth sounding. But Beyma's original curve's are pretty fair.

Highly recommended

I'd be more interested in seeing the curves without the EQ, and without a brickwall digital filter....

Pano · 30th June 2009, 07:58 PM

Sweet!

I emailed Beyma to ask what they did inthe way of x-over to get such good results. Let's see if they answer.

What did yo do for your cross?

Lindell · 30th June 2009, 08:03 PM

Quote:

Originally posted by badman

I'd be more interested in seeing the curves without the EQ, and without a brickwall digital filter....

Raw drivers at same gain

30th June 2009, 03:17 PM	#2
augerpro diyAudio Member Join Date: Aug 2006	Cool. Anyone in the US carrying these yet? On a related note, any other decent high-ish efficiency 6.5" coaxes available? __________________ ~Brandon DriverVault Soma Sonus Old Driver Tests

30th June 2009, 03:37 PM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Interesting driver. The off axis response looks superb, if the plot can be believed. Wonder how they crossed it to get that? Not going to be cheap, one would think..... __________________ Take the Speaker Voltage Test!

30th June 2009, 04:21 PM	#4
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	Oooooo I've always thought that a coax should have a relatively long horn for the tweeter, to eliminate the (moving) cone loading the tweeter output. __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

30th June 2009, 05:52 PM	#6
Inductor diyAudio Member Join Date: Feb 2006 Location: Cascais	On a side note also file this interesting one, on the same tecnologie (n/coax). Beyma 6P200Nd http://profesional.beyma.com/ingles/pdf/6P200Nd.pdf Price 90.00 euro no/tax. Price for BEYMA 6CX200Nd COAXIAL TRANSDUCER is about 148.00 euro. __________________ What the Hell is this crap?! It's not crap, it's muzak.

30th June 2009, 07:58 PM	#9
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Sweet! I emailed Beyma to ask what they did inthe way of x-over to get such good results. Let's see if they answer. What did yo do for your cross? __________________ Take the Speaker Voltage Test!


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30th June 2009, 07:25 PM	#7
Lindell diyAudio Member Join Date: Dec 2005 Location: Planet Earth	I've made a pair of prototypes: . After x-over and eq and stuffed port . Step resp . on-off/axis . Slopes . Glorified Hi-Fi curve Retail price is 220 EURO. Sound is excellent. Amazing low end respons. It's a bit tricky to get flat and smooth sounding. But Beyma's original curve's are pretty fair. Highly recommended

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