Beyma 8BX

[belin]

From the lateral.

 

[belin]

In the position where i pretend to measure. The room is a little small, but i have one meter and something to all sides from the driver (two and something to the front wall with the curtains), and the same can be applyed to the microphone position.

 

[Paul Ebert]

Were you ever able to get measurements? If so, I'd be interested in what you found.

Paul Ebert

 

[sumacSK]

Hi,

Belin have send me the graphs, so I'll post it here.... Black curve is on axis, red is 10º out of axis, green 20º out of axis, blue is aproximately 30º out of axis, The second black in the upper graph is the response
with more than 45º out of axis.

 

[sumacSK]

Here is crossover scheme...
In the upper graph (of freqv. response) 10uF capacitor is changed with one of 15uF.

Martin

 

[Gregory Isaacs]

Hi,

they look interesting - how do they sound?

 

[belin]

New measurements

Hi all,
I'm working (I must say not much) with new measurements. The time window is now reduced to 2.5 ms aprox. The project is going really slow, but I don't have enaugh time to spend in hobbies. I'll post the graphs of the tweeter and woofer responses in next messages.

 

[belin]

8bx tweeter

Tweter responses (0º/45º)

 

[belin]

8bx woofer

Woofer responses.

 

[belin]

Crossover

A new crossover that I'm simulating.

 

[belin]

Crossover response

The simulated response (SpeakerWorkshop) of the crossover.

 

[sumacSK]

Hi Belin!

How is your project?? Some new findings? I'm still deciding whether use this driver in my next project or not...

Martin

 

[v-bro]

Hi guys!

I've been asked to build a filter for this driver by a friend of mine.

Any news on this project?

How did that filter indeed turn out Belin?

And what did you do with the drivers in the meantime SumacSK?

 

[Natali]

Hi, I just finished a pair of bass reflex boxes (60lt) and I am currently using this crossover

An externally hosted image should be here but it was not working when we last tested it.

Suggestions?

Thank you, Andrea

 

[v-bro]

Hi,

how's the sound?

Can you show pictures?

Did you measure the response?

 

[Natali]

Yesterday evening we made some listening test with a friend and they are not bad at all. Maybe it is better to increase the first capacitor 2,2uF to 2,6-2,8uf (it seems to be better).
I have also changed the resistor (in parallel with the tweeter) from 1,8ohm to 3,3ohm, but in this case there is no audible difference.
You can see the speakers here: http://www.audiofaidate.it/forum/topic.asp?TOPIC_ID=2819

When we will measure the response, I will post the results.

Ciao, Andrea

 

[v-bro]

Hey, cool thanks for that!

 

[sumacSK]

Hi,

I never managed to buy them.. I ordered them but then they told me that this speaker is out of production.. I don't know..
Natali: that speaker looks good..

 

[airchina]

Yesterday evening we made some listening test with a friend and they are not bad at all. Maybe it is better to increase the first capacitor 2,2uF to 2,6-2,8uf (it seems to be better).
I have also changed the resistor (in parallel with the tweeter) from 1,8ohm to 3,3ohm, but in this case there is no audible difference.
You can see the speakers here: AudioFaiDaTe.it

When we will measure the response, I will post the results.

Ciao, Andrea

hello Natali
would you post your crossover again?