Projects

[boostinsteve]

Hey guys, never really posted here, but have been designing and building enclosures for quite a bit of my life. Here are some of the projects I have been up to lately. First 2 are my new fronts for my HT experience.

The next few are my new computer speakers. The ND105-4 is too good of a deal to pass up for 12 bucks. I love the sound that it puts out.

Forgot to give some details:
Fronts I wanted something completely different, and would be able to take whatever I could throw at it. They are definately power hungry, and I really wish the nd120 was on sale for that price, but oh well. They play nice and low with the tuning at 39 Hz. Definately will not shatter any windows, but they get loud, and give me lots of what I needed, nice clear sound. Currently have the tweeters crossed at 2500Hz, but I think I am going to build a new crossover for them at 3500Hz. They really struggle with anything below 3000Hz, but sound great above that.

The computer speakers are the 2.00 aluminum speakers that everyone is using. In a very small sealed enclosure, they give pretty clear sound. Definately worth the 8.00 total, and the scraps that I used to make it. The computer sub is where the nd105 really shines. It is a t-line enclosure, that is tuned rather low. I know that you aren't supposed to tune a t-line past the resonant frequency of the driver, but I went ahead and tuned it at just a shade over 42Hz. It plays lows very well, without being overly boomy. I was surpirsed by this because usually my t-lines sound like they hit one not really well, and then fall flat on their face the rest of the time. Overall, that one was worth the 12.00 for the driver, and the 8.00 in MDF.

Now for the fun project. I will be redo-ing my HT sub, and am unsure yet what I want to do. I think I will re-use the sony driver and plate amp for now, and build either a 4th order bandpass, or just a monstrous ported enclosure. I will think about for a couple of days, and move from there. Thanks for looking guys.

[boostinsteve]

My impression of the nd105 so far is that it can put out some good bass for its little size. It rattles the windows in my room when I do a sweep from 10hz to 1000hz, and that is with the volume only at 1/3 level. I only have 15WRMS driving this little bugger too, so it is efficient with the little bit of power. I still need to do some more testing of this driver for my fronts, but the results look very promising so far.

[hyperlite]

All this ND105 talk has got me really excited. My 4 should be landing on my doorstep on tuesday in preparation for an MTM project.

Nice systems OP!

[Beer man]

I found this for the 2$ al buyouts on an overseas site that sells dayton stuff.
tweeter goes on top sealed.

http://www.intertechnik.de/Lautsprec...l?detail=95152

port is listed as hp35, 35mm*123mm the 35 tapers to 29mm inside the box.

I haven't built this yet. But, the site does have an al175/da175 mt and the crossover has little BSC 2nd order and does not diffuse the breakup so this design is questionable.

However, this is the only kit or documented network for the buyout that I have seen.

[ikymagoo]

oh, nice i was think of those 2 inchers as well. yeah, you can't beat 2 bucks a piece.

[boostinsteve]

OK,
I got the itch to redo my sub today. It is an old Sony sub that I got for a really good price when I wanted some extra bass to add to the fun. It is a 12 with a measly 90 watt amp.

The old enclosure was a joke when I took it all apart, so I am definately glad that I did this. The new enclosure is 2.55 cu ft, with a 1.5"x15" port, tuned to 29Hz to try to bring out the lows, and man did it. Even with this cheap driver and the 90 watts, this thing sounds so much smoother and no longer is boomy, all bass frequencies come across pretty well. Eventually I will upgrade to a 500 watt sub amp and probably a titanic to match up with this box. I will take some pics later, it is a pain to move around, and I just got it situated, and thought to take pics then. Oh well