There was a TL-concept with the dt-25ti and the sph-170 in one of the german hobby magazines. They said it was one of the highlights of their "cheap-trick" series.
You can see a picture of the box here http://www.visaton-bausaetze.de/hifi/index.htm?http://www.visaton-bausaetze.de/hifi/vergl3.htm at the top click on "cheap tricks".
Then click on CT 202 wich is the box I'm talking about.
You can see a picture of the box here http://www.visaton-bausaetze.de/hifi/index.htm?http://www.visaton-bausaetze.de/hifi/vergl3.htm at the top click on "cheap tricks".
Then click on CT 202 wich is the box I'm talking about.
Although this is a TL-box you can easily convert it to a small closed box (approx. 17 ltr.) wich will still have good bassresponse.
As long as you keep the width of the baffle the same you can use the xover that is used in the CT202. The xover parts are mentioned on the site, it's a very simple 12db/oct xover with a attenuator circuit for the tweeter.
I have a frequency response of that box, it has perfect linearity!
As long as you keep the width of the baffle the same you can use the xover that is used in the CT202. The xover parts are mentioned on the site, it's a very simple 12db/oct xover with a attenuator circuit for the tweeter.
I have a frequency response of that box, it has perfect linearity!
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