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Seems like a lot of talk on the form about little desktop speakers that pack a punch, must coincide with the back to school idea. Came up with the idea of this little speaker one morning when I could not fall asleep(I work 3rd shift). I was listening to Pandora on my phone and thought that the phone speaker was not cutting it. I have an alarm clock radio but I think my phone speaker is better than that. So, as I laid there thinking about all the small speakers designs out their, the Nano Neo's, Wolf PC, Sprite, and so on. I realised that I wanted small form factor, great bass, and work well with a Lepai 2020. I really wanted to do something that would have an f3 of 40 Hz, I looked at the SB Acoustic SB13, Dayton ND105, and several other drivers. When I modeled the drivers I realised that I would be working with .5 cuft boxes or bigger. That is fine for a bookshelf but for my night stand I wanted a little smaller form factor. I decided to give up the goal of 40 Hz and look at speakers that will play well in a small sealed box and still have a nice roll off.
I choose the HiVi B3N as that speaker. I liked the way it modeled and was able to achieve an F3 of 80 Hz and F10 of 60 Hz in a .10 cuft sealed box. Because it has a sensitivity of 81dB's I decided to do a MTM setup. I first looked at some of the cheaper tweeters that PE offered and modeled the ND20FA because it had been used in several other low bugget builds. To say the least it took a lot to get it to line up with the HiVi's. Did some more looking and came across the Tang Band 25-1166SJ and that modeled really well. The lower Fs and smoother frequency response helped a lot, the only downside to the 25-1166SJ is the 50 watt rms.
This is the box I came up with.....
And the simulated crossover.....
Low pass filter.....
High pass filter.....
Hoping the wife will by the speakers for my birthday coming up and get them together soon but with DIY Iowa coming up it may be awhile. Also let me know what you guys think.
I choose the HiVi B3N as that speaker. I liked the way it modeled and was able to achieve an F3 of 80 Hz and F10 of 60 Hz in a .10 cuft sealed box. Because it has a sensitivity of 81dB's I decided to do a MTM setup. I first looked at some of the cheaper tweeters that PE offered and modeled the ND20FA because it had been used in several other low bugget builds. To say the least it took a lot to get it to line up with the HiVi's. Did some more looking and came across the Tang Band 25-1166SJ and that modeled really well. The lower Fs and smoother frequency response helped a lot, the only downside to the 25-1166SJ is the 50 watt rms.
This is the box I came up with.....
And the simulated crossover.....
Low pass filter.....
High pass filter.....
Hoping the wife will by the speakers for my birthday coming up and get them together soon but with DIY Iowa coming up it may be awhile. Also let me know what you guys think.
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