Line array has been started.

[IamDeMan 5,000+ posts]

Just to run down what all has been done.

The enclosure is tuned around 65hz.

Cones have 6 coats of lacquer

Inside is stuffed with R-13 liberally

Crossover is a simple 12db both ways at 4.5khz.

I have a dual attenuator

The mid drivers have been counter sunk and mounting flanges puttied over

 

[IamDeMan 5,000+ posts]

is that corian?

No they are standard formica. I wasn't going to pay builder prices for Corian or Granite. I will eventually upgrade that myself.

 

[DBfan187 5,000+ posts]

you mean gibraltar? yeah my mom sells all of that stuff for a living. lol

I like your project.

 

[IamDeMan 5,000+ posts]

you mean gibraltar? yeah my mom sells all of that stuff for a living. lol
I like your project.

Never heard of Gibraltar. All I know is home builders charge way too much if you deviate from the standards. The only thing I had them do was do Tile throughout(except bedrooms), because I wasn't tiling another ****ing house.
Thanks. They do what they are designed to do, which is be efficient and loud within their focused range. I will do a more suitable HT project later and put these in back patio for parties and such. It was more or less just to waste time and experiment.

 

[IamDeMan 5,000+ posts]

Just looked up Gibraltar. Good lookin stuff. Like Corian but one piece with molded basins. I like it, but I will have to go Granite when I redo it.

 

[iagrdshaka 5,000+ posts]

Here is one of them done.

looks good //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[BrianChia 10+ year member]

how does it sound?

 

[BuddyChrist 10+ year member]

argh i had 64 of those nsb's but some crackhead stole them //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[thylantyr 10+ year member]

I have 288 NSB's in storage for a rainy day. lol

The NSB project looks good. I'd prefer to see a tweeter array longer, but

that adds to the cost. You should get a high pass filter to keep cone excursion

low which raises the power handling. Those are 5 watt drivers, low excursion.

When you do your listening tests, monitor the cone excursion to make sure it's not

going crazy. A Behringer DCX2496 would probably get you more performance, it has

8th order slopes, great for high passing the NSB's and also great for those small dome

tweeters. Those tweeter can give you more with a steep crossover slope. You can

take that crossover in the 2.5khz range, down from 4.5khz. Your stereo image will

improve alot. DCX has delays. Add a 15mS delay to one channel and you have a small

concert hall effect. Feed the beast some generous power and the dyanmics open up

a lot. My NSB array has been running off two bridged PLX3402's for a few years now,

and the tweeter array has two more PLX's. I'm surprised that I have not blown any

drivers yet and I crank the hell out of the system where the amps are clipping.

My NSB SPL score is > 126dB[c] in room, 12 feet away. The Radio Shack meter is maxed out, lol.

Midrange frequencies are 122dB[c]. This is pretty neat for 4" Pioneer 5 watt TV speakers that cost 49 cents.

Imagine what you can do with better drivers? hehe

This only proves one thing. The line array effect, if exploited properly, just owns, akin to an

army of ants taking down the big elephant.

 

[JimJ 5,000+ posts]

argh i had 64 of those nsb's but some crackhead stole them //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

Probably moved down to Florida and that's his front stage now.

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[IamDeMan 5,000+ posts]

I have 288 NSB's in storage for a rainy day. lol
The NSB project looks good. I'd prefer to see a tweeter array longer, but

that adds to the cost. You should get a high pass filter to keep cone excursion

low which raises the power handling. Those are 5 watt drivers, low excursion.

When you do your listening tests, monitor the cone excursion to make sure it's not

going crazy. A Behringer DCX2496 would probably get you more performance, it has

8th order slopes, great for high passing the NSB's and also great for those small dome

tweeters. Those tweeter can give you more with a steep crossover slope. You can

take that crossover in the 2.5khz range, down from 4.5khz. Your stereo image will

improve alot. DCX has delays. Add a 15mS delay to one channel and you have a small

concert hall effect. Feed the beast some generous power and the dyanmics open up

a lot. My NSB array has been running off two bridged PLX3402's for a few years now,

and the tweeter array has two more PLX's. I'm surprised that I have not blown any

drivers yet and I crank the hell out of the system where the amps are clipping.

My NSB SPL score is > 126dB[c] in room, 12 feet away. The Radio Shack meter is maxed out, lol.

Midrange frequencies are 122dB[c]. This is pretty neat for 4" Pioneer 5 watt TV speakers that cost 49 cents.

Imagine what you can do with better drivers? hehe

This only proves one thing. The line array effect, if exploited properly, just owns, akin to an

army of ants taking down the big elephant.

My yamaha has a XO built in. With the limited power the receiver has they will play with a 60hz setting and blend in great with the sub. Nice score btw. My towers maxed a 112c on my Galaxy.

how does it sound?

Well they do everything they are supposed to. Within their focused area they are loud. Not the best SQ, but give a real live feeling. Like being at a concert.

Probably moved down to Florida and that's his front stage now.
//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I loled.

 

[brandontw 10+ year member]

Here is one of them done.

Those look REALLY good dude! You put a lot more effort and man hours into your than i did mine, and it shows bigtime!//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

That looks amazing with the NSB's flush mounted and puttied... did you use Bondo? I really wish I used MDF instead of real wood after seeing these.

I'm sure your sound a lot different than mine, but mine also have a "live" sort of sound to them... I'm not sure what causes that... i guess its just a characteristic of line arrays in general. hows the bass response on those with the ported enclosure. (I went sealed on mine, and they don't get low, but they definitely have kick to them, you could go subless if you had to)

Grat'z on getting one finished, now the hard part is getting the second one done -mine still isn't:crazy:

 

[IamDeMan 5,000+ posts]

Those look REALLY good dude! You put a lot more effort and man hours into your than i did mine, and it shows bigtime!//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
That looks amazing with the NSB's flush mounted and puttied... did you use Bondo? I really wish I used MDF instead of real wood after seeing these.

I'm sure your sound a lot different than mine, but mine also have a "live" sort of sound to them... I'm not sure what causes that... i guess its just a characteristic of line arrays in general. hows the bass response on those with the ported enclosure. (I went sealed on mine, and they don't get low, but they definitely have kick to them, you could go subless if you had to)

Grat'z on getting one finished, now the hard part is getting the second one done -mine still isn't:crazy:

It isn't MDF. Thats birch ply. I originally thought I was going to do a black gel stain, so I wanted wood. The gel stain didn't make the wood black enough to match with my other pieces, so I settled on fine texture black paint.

You could go subless, but I need a little ore bottom end grunt so I don't. They definitely played down into the 60s as they were designed to. They matchup great with the IB sub crossed at a steep 60.

As far as putty I used elmers wood filler putty, because once again, I thought I would stain. If I thought I was painting from the beginning I honestly would have used a self leveling slow cure epoxy coating then bondo it in. Would have been easier and less time consuming.

 

[brandontw 10+ year member]

Oh yeah, I forgot it wasn't MDF -Well anyway the birch ply still came out a lot straighter than my pine boards did.

Glad your fairly happy with em!

I just plugged mine back in recently after a 6 month break from them, for home theater use, and i still like them, but i am somewhat disappointed in them for home theater use. I can quite put my finger on it. I guess its just that "liveish" sound.

They still put a big smile on my face when I crank some music on em though //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ballstothewall 10+ year member]

I still have this itch to build a pair...