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Old 25th March 2013, 10:28 AM   #1
Mihkus is online now Mihkus  Estonia
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Default Noob building a pair of Floorstanders 3-way. help needed!

Good day grandmasters!

I had an idea almost year ago but now i got some experience to start!

Only place where i can buy stuff is from stx... also theres way better places to buy from but i dont want to spend alot on my first "Hi-Fi" set

So i need some help with design and drivers

I have choosen:

Highs: T.STX.4.1.200.8.FPPC

Midranges: M.STX.5.1.120.8.FSMC

And bass: GDN-22-200-8-SC

Total price of 64€,

Filters and other stuff will be done too but cant before im sure about the drivers.

First quiestions would be...

Are those drivers even worth buying?
Maybe i can find something better?


Thanks alot .

Last edited by Mihkus; 25th March 2013 at 10:55 AM. Reason: Ohh dear my spelling level must be incredible!
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Old 25th March 2013, 11:01 PM   #2
Dissi is offline Dissi  Switzerland
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Quote:
Originally Posted by Mihkus View Post
Are those drivers even worth buying?
Never heard of STX before, but I found the datasheets of the drivers:

T.STX.4.1.200.4.F.P.PC - G?o?niki najtaniej,kolumny,ko?cówka mocy,kino domowe,subwoofer,samochodowe,zestawy,centralny,efe ktowy,driver,speakon,estradowe,hifi,wzmacniacz
M.STX.5.1.120.8.F.S.MC - G?o?niki najtaniej,kolumny,ko?cówka mocy,kino domowe,subwoofer,samochodowe,zestawy,centralny,efe ktowy,driver,speakon,estradowe,hifi,wzmacniacz
G?o?niki najtaniej,kolumny,ko?cówka mocy,kino domowe,subwoofer,samochodowe,zestawy,centralny,efe ktowy,driver,speakon,estradowe,hifi,wzmacniacz

You have choosen a 8" woofer, a closed cone 5" midrange and a 1" polycarbonate tweeter. The drivers and the data look reasonable and the recommended crossover frequencies are around 800 Hz and 3 kHz. The woofer requires a vented cabinet of 40-55 litres and goes down below 50 Hz. Based on the information given and considering the price, everything seems to be fine so far.

An option would be to use an open midrange driver and to cross it lower (around 500 Hz).

However you will have to design a 3-way crossover network for the speaker and that's not gonna be easy. Further keep in mind crossover components are expensive and will add costs of 50-100% of the amount for the drivers.
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Old 26th March 2013, 01:14 AM   #3
SpirosZ is offline SpirosZ  Greece
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These drivers look great for the price!
I would also chose the open back midrange for a 500Hz cross.
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Old 26th March 2013, 06:02 AM   #4
Mihkus is online now Mihkus  Estonia
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Thanks you!

What about this one: M.STX.5.1.150.8.F.S.MC.X (GDM-14-150-SCX) - G?o?niki najtaniej,kolumny,ko?cówka mocy,kino domowe,subwoofer,samochodowe,zestawy,centralny,efe ktowy,driver,speakon,estradowe,hifi,wzmacniacz

Would do fine 500 - 5k i belive more likely we dont need to go that high

Tweeter from 3,5k...4k seems fine


They also sell crossover parts and not very expensive.
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Old 26th March 2013, 08:14 AM   #5
SpirosZ is offline SpirosZ  Greece
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In my opinion this is a better choice, however, you will need to make a separate sealed 2-6lt chamber for it.
Crossover frequencies will have to be determined by experimentation and ideally some measurements.
I would cross it as far as possible from that 6k cone break-up.
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Old 26th March 2013, 08:46 AM   #6
SpirosZ is offline SpirosZ  Greece
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You can also try to copy one of their ready made designs like this one STX FX-200 (kolor orzech) - G?o?niki najtaniej,kolumny,ko?cówka mocy,kino domowe,subwoofer,samochodowe,zestawy,centralny,efe ktowy,driver,speakon,estradowe,hifi,wzmacniacz.
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Old 26th March 2013, 05:45 PM   #7
Mihkus is online now Mihkus  Estonia
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I may try, seems to be the simpliest way to go...

I dont know if they can send me drawings and such but I'll ask anyway.

It might come out great if i had plans.
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Old 26th March 2013, 05:56 PM   #8
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That huge coffin ?

If there isn't any other way to make a 3 way ....
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Old 4th April 2013, 05:26 AM   #9
Mihkus is online now Mihkus  Estonia
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So i had some time yesterday and got to go to work again, no time at all
But i did something and here it is:
Click the image to open in full size.
upload

Just dimentions of inside total height of 150 or so
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