I want to make a 2 way box.. Pls help me..

[Dxvideo]

Hi all,

I am very newbie about DIY loudspeakers... In fact i have never made a DIY speaker box... But i have a pair of that bass driver;

Westra KW 160-1374
Qts = 0,5
Vas = 25lt
Fs=45Hz
Z=4ohm
SPL=85dB
dia=165mm

With a 25lt vented enclosure i can get 45Hz F3 (Winisd says). I also have two of 4ohm two way (6dB) passive crossover from an old speaker. I want to make a pair of two way speaker box by using that drivers... What can you advice to me? If i buy two good dome tweeter (4 or 8 ohm) and make 25lt enclouse for each. That makes a good pair of speaker box? Or can you advice a different way to me?

Thanks in advance for your helps.

Best regards,
Özgür

 

[Dxvideo]

Wont anybody help me?
Or did i ask a stupid thing?

 

[pinkmouse]

OK, the stock crossovers are unlikely to work well. You really need to measure the drivers, or at least find a frequency response plot before you can decide on a tweeter, then you can look at crossovers.

 

[NurEinTier]

http://www.hellsound.de/html/hellsound/chassis-westra.htm

No graph, frequenty range 45-4000.

 

[Dxvideo]

Thanks guys. I mean that.. That bass can give up to 4000Hz. So what can i do next? How can i buy (or make) a xover for it? And what type of tweeter should i buy, then how can i design a good enclosure for it?
Thank you again.

 

[Dxvideo]

Nobody will help me?

 

[pinkmouse]

DX, you need to measure your driver first before we can recommend anything. Then we need to know what tweeters you can actually get - there's no point in us telling you about a wonderful driver that you can't buy!

 

[Dxvideo]

Measure??
Should i measure it in free air and give 1W signals from 45Hz to 4000Hz then measure by a sound level meter? And draw a curve of response? Well its too much for me.. First of all i have no acustic room in my workshop or home. Second is i have no signal generator.
Conclusion; i should buy a new brand one..
What's your advice to buy a new 50W bass/midbass?
Thank you Pink.

 

[pinkmouse]

We're not so bothered about the bottom end, as that is mostly box influenced, we want to look at crossover frequencies. Download the free demo of Arta, and use a cheap computer headset type mike. You don't need a special room, just don't put it in a corner or against a wall when measuring. That will be good enough to get going, and learning to measure speakers is a very handy skill.

Oh, and you still haven't told us what makes of drivers you can actually get hold of easily!

 

[Dxvideo]

Is it that easy to measure my driver? I'l do it tonite..
However i couldnt understand that sentence because of my poor English;

"Oh, and you still haven't told us what makes of drivers you can actually get hold of easily"

Can you explain it a simpler way? Thank you.

 

[pinkmouse]

No problem.

What speakers can you get in your country?

Is that better?

 

[Dxvideo]

In fact i havent searched for a speaker driver in Turkey
But i have just downloaded the Arta software... And i abandoned my "Is it that easy to measure my driver?" remark! It seems not easy to work with it.. Can you help a bit for a practical measuring pls.?

 

[pinkmouse]

It's the easiest package out there to learn. Be glad I didn't send you to Speaker Workshop.

Just read through the manuals a few times, it's well worth the effort. Searching here or googling will also help.

 

[Dxvideo]

Ok Pink i'll do it. I hope i can do..
By the way, i found i pair of 8 ohm 4" midrange, a pair of 8 ohm 2" cone tweeter and a pair of 4 ohm 4" mid bass in my cellar. And they are in good conditions. As i can remember they were part of my old surround system passive boxes. Theyre CAT brand and made in Germany. But i cannot any information about CAT now.
Can i identify that speakers specs with the same way (Arta)? And use them for my project?
Thanks again and have a pink day..

 

[Dxvideo]

And these are the xovers from my old surround boxes.. Do you think theyre rubbish?