Adding a tweeter to Beyma 8ag/n

[bubuxxl]

Hello there!

I´ve built a pair of Cyburg´s "Viech" with the Beymas 8ag/n,which sound fairly good and sweet in the mid/highs.
However,I´d love to add a cheap tweeter,just to bring that last sparkle to the sound,as the beymas don´t go much further than 17khz give or take.
Any suggestions?

And what about installing it,is it any difficult?

thanks in advance!

[Inductor]

What do you think (look at the price) about the Visaton TL16H (take this one out then), Fostex FT17H (what I call a "cheap tweeter"/supertweeter), Fostex FT96H. Use a capacitor and Fostex Attenuator 100W R80B or similar. Notice the >95dB you need from a common tweeter. (What city are you?)

[bubuxxl]

I´m from Lisboa my fellow portuguese!
The tweeters you pointed out sure look the part,but they´re really a bit expensive,since I got the beymas for just 48 euros...I was looking for something a bit more cheap,although the attenuator seems like a great idea!
So you mean that I have to use a horn tweeter to get the best combination possible?
Can´t I use a dome tweeter?

[Inductor]

You can, choose one that's going to be able of the 96dB's of the Beyma 8ag/n. Open for ideas. Do you have any xover components on the Beyma, that bring sensitivity down (?). The other possibility would be a tweeter with rising output, like this one DTW 72 8 OHM.

[el`Ol]

Monacor España S.A.

[bubuxxl]

Originally Posted by Inductor

You can, choose one that's going to be able of the 96dB's of the Beyma 8ag/n. Open for ideas. Do you have any xover components on the Beyma, that bring sensitivity down (?). The other possibility would be a tweeter with rising output, like this one DTW 72 8 OHM.

Now this one seems like something I could live with,for about 15 euros each,seems like a very nice choice,and best of all,it´s a suggestion that came from someone´s know how!
Thank you very much,I´ll give it a try!
But what else do I need besides the tweeter?

I hope I´m not being too much of a pain...

[Inductor]

I didn't find the Visaton DTW72-8 in my database so I used the DT94-8 that is similar (for this xover application/simulation, I used it in conjunction with the Visaton B200 fullrange) at about 15 cm from the main driver (top or bottom). You can see that it blends well at about xover freq. 7K, the problem here is phase what the horns mitigate better.
If you use the higher inductor to curve the top of the fullrange at HF, you may need the resistor on the tweeter. With the smaller inductor you may need not.
You have some tests & auditions to do now...
The inductors on the fullrange are aircores.
The resistor (if used) is NI type.

[Inductor]

How are the "spirits" here?...

[bubuxxl]

friday I´m initiating tests with a vifa dq25,with just a capacitor in series with the tweeter,I guess this is the easiest way to start things up...from there on
I´ll begin "complicating" things!
Truth is,will the tweeter reveal detail in music I wasn´t able to hear with just the beymas?

[Inductor]

Originally Posted by bubuxxl

friday I´m initiating tests with a vifa dq25,with just a capacitor in series with the tweeter,I guess this is the easiest way to start things up...

The Vifa DQ25SC16-04 is a dcr=3ohm tweeter. You have to double caps from 8 to 4 ohm, and the inverse for inductors.
1. Use this filter, with good integration, xover at ~5kHz, as a starting point.
2. The important thing is a good phase between components, this one (xover) it's very ok.
3. Then adjust atten. of the tweeter with resistor, for small alterations.
4. You can also adjust the inductor, on the fullrange, for more or less balance between bass/mid-bass and mid/high-frequency (5kHz).