Beyma 8AG/N horn or "the Viech"

[miguel2]

Hi Berndt,

Have you tried these drivers in open baffle? I have them now in this configuration and get a nice response up to 15 KHz, but that is without any measurements (just listening some test tones). However, the bass goes considerably lower in your horn, as in OB there is nothing below 100 Hz.
One thing that these drivers do, and I completely agree with you, is that they really deliver the goods effortlessly, maybe because of ther high sensitivity.
BTW, mine costed 22 euro.

Miguel

[joebig]

Well, I have finally found them here in Barcelona. Price... well.... 16.5€... yes I know... they are really expensive, but I'm rich, your know...

I have test them yesterday with no box. Well, they sound pretty well for the price.

I'm waiting for my Sonic Impact amplifier (I'm sure you have listen about it) in order to test this high efficiency speakers.

Then I will do some cavinet (I don't know if BR or Berndt's Horn (C), or perhaps the two of them) to really test the system.

Like Miguel, I think they lack a bit in the highs, I think I will use some tweeter with a simple 1st order filter, cut very high (between 12kHz and 15kHz).

Thank you all, greetings,

Joe

[zek]

Hey folks
what about this Beyma 10AG/N fullranger.

http://ceiling.beyma.com/ENGLISH/pdf/10AGN.pdf

Best regards
Zek

[Cyburgs]

@miguel2: I tried it in a baffle, but in my opinion the fs of 105 Hz is much to high. There is a kind of hype in germany with the Ciare CH250, which should run considerably low in an open baffle and is not much more expensive. I tried the Beyma 8AG/N also in a vented enclosure made from thin boards (following a tip from a vintage audio fan), which sounded very nice. But of all enclusures I tried the Viech makes most fun in my opinion.

@joebig: Aaaargh! 16,50 Euros! OK, in this case the use of a supertweeter could pay, especially if you get the fine Beyma tweeters also that cheap in Spain ;-)

@zek: I don't know it, but I could imagine, that a Horn with this driver would be really big (kind of Master-Viech). Sounds interesting ;-)

Nice greetings, Berndt

[miguel2]

Berndt,
Can you give a description of the vented enclosure you used? Dimensions, materials, vent. Do you think the sound in OB is much different from an enclosure - boxiness? There is some talk about non MDF enclosures, that vibrate along with the speaker. Some are said to be very nice. What about the lower frequency extension in this box?


Joe
That is what I call a good price! Just to try them, find some card from big cardboxes and fit them in OB configuration. You can hear your drivers while you makes those boxes .

Miguel

[tz250w]

hi,
Beyma 8AGN available in Australia through Krix loud speakers.
I ordered some this week at A$90 ea, + $30 local freight for the pair.
Order asap so it can be sent over in their container leaving in 3-4 weeks from spain.

Peter Lawson,

Director Sales & Marketing

Krix Loudspeakers Pty Ltd

14 Chapman Road,

Hackham South Australia 5163

Phone: +61 8 83843433

Fax: +61 8 83843433

Web: www.krix.com.au

Regards,
Paul Holland,
Sydney.

[qwad]

Thanks for that bit of info, if I''m that way disposed I will call them up as I know scott and his brother ashley, peter lawson is their marketing man / sales manager top blokes all which is more than can be said about another local manufacturer who makes some of the most outrageous claims almost claiming the wheel as his own invention not to mention sliced bread...... yiros, roast lamb perhaps with a little retsina/ stuffed olives and feta thrown in for good measure cheers TC

[tleonard]

Can someone give me a hint what kind of material would qualify as acoustic foam rubber? An application example or a hyperlink perhaps?

Also, I've contacted one company here in the US that deals on this brand - hoping for a in-country source! Design looks great and you can't beat the instructions.... particularly like the non-mitre option.

Thanks...

[Cyburgs]

This is from a source in Austria and Germany, just to underline, what it looks like:



The one I used is made from polyurethane and comes in thickness of 2cm. It should not be much thicker, because there is not much space behind the driver. This kind of material is mainly used for loudspeaker DIY. If you don't find a supply, then normal foam rubber in 2cm thickness should work as well.

Nice greetings, Berndt

[qwad]

yes ordinary foam 1in to 3/4 in would do as well the reason they call it acoustic foam is because of the sculptured surface presenting a larger surface area to absorb acoustic energy, a similar sculptured foam is available locally as a mattress overlay though its a light creamy/ off white color though the color doesent affect it's function years ago kef sold their kefkits with similar blocks of foam as cabinet wall lining, l have a pair of spendor preludes that are lined with a 1 in thick cream foam, which is ordinary poly foam.... nothing special/ also l have a pair of celestion ditton 44's that are filled and lined with similar foam slabs of varying thicknesses, so go with any cheap foam you can find until you can source the sculptured variety good luck and cheers TC