How is this NSB finished? - diyAudio
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Old 3rd October 2004, 05:35 PM   #1
pvfjr is offline pvfjr  United States
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Default How is this NSB finished?

Figures, I bought a bunch of NSB's from PE, and the most PE NSB project I found had no write up, just pictures. It's Dave Burke's project and what was most interesting to me is what he did to the driver. Anyone know?

From this
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To this
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Old 3rd October 2004, 06:35 PM   #2
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Are you trying to say those are pics of the same driver? I don't think so............
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Old 3rd October 2004, 07:12 PM   #3
pvfjr is offline pvfjr  United States
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Doh! Just realized that they're not even the same size. Hmm, should've taken a closer look, he really threw me. Besides that, anyone have any other ideas? I've heard the old diluted glue trick for different puposes, but I don't think that would be too asthetically pleasing. Anyone ever shot them with a thin coat of spraypaint?
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Old 3rd October 2004, 07:19 PM   #4
cjd is offline cjd  United States
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Not the same driver, to be sure. I remember reading a larger writeup on Dave's project - quite interesting. I think those are an MCM offering, but not sure.

C
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Old 3rd October 2004, 07:58 PM   #5
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I add blue and red food coloring to the PVA glue. When dry the cones are closer to black than the original dark gray.

I wouldn't do spray paint, it will eat the foam surrounds.
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Old 3rd October 2004, 08:00 PM   #6
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The glue will make it a little darker and shinier... should look alright.


Maybe remove the dustcap as well?
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Old 4th October 2004, 07:37 AM   #7
pvfjr is offline pvfjr  United States
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I wasn't going to paint the surrounds, just the cone. I think it's worth a shot, $.49 right? Where is this larger write up of Dave's speakers? That would be interesting.
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Old 4th October 2004, 06:49 PM   #8
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Quote:
Originally posted by pvfjr
Doh! Just realized that they're not even the same size. Hmm, should've taken a closer look, he really threw me. Besides that, anyone have any other ideas? I've heard the old diluted glue trick for different puposes, but I don't think that would be too asthetically pleasing. Anyone ever shot them with a thin coat of spraypaint?
I had considered spray paint, but I don't think it would be ideal. I think over time the paint would crack.

For more on this subject check out my thread entitled "Line Array Ruminations and Questions".

We're going over different cone treatments for the NSBs and it would take a while to reiterate here.

However, to summarize:

Shellac
Varnish
Rubber cement
Mod Podge
Puzzlecoat

What are you planning on doing with these drivers once they sound the way you want them to?
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Old 5th October 2004, 02:48 AM   #9
pvfjr is offline pvfjr  United States
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I'm not quite sure what I'm up to, I just saw all the projects and couldn't pass up the price. I was thinking about a line array, but I don't think I'm at the point of designing my own things yet. I'd like to copycat someone else first, then think about my own design later. I'm kinda on a tight budget right now though. I'm still learning a lot too.
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Old 5th October 2004, 02:21 PM   #10
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Quote:
Originally posted by pvfjr
I'm not quite sure what I'm up to, I just saw all the projects and couldn't pass up the price. I was thinking about a line array, but I don't think I'm at the point of designing my own things yet. I'd like to copycat someone else first, then think about my own design later. I'm kinda on a tight budget right now though. I'm still learning a lot too.
Amen brother.

Not quite sure what I'm up to. Check

Couldn't pass up the price. Check

Thinking about a line array. Check

Like to copycat someone else. Check

Tight budget. Check

Still learning a lot. Check

I'm restricting myself to a c-note for this whole project (not counting wood and tools).

My latest feeling about the NSBs is that you can coat them lightly with something but don't get crazy.

I tried two coats of 50:50 rubber cement:mineral spirits and it dampened the top end significantly, but I lost a hell of a lot of sensitivity too.

I think the thing to do is two light coats of varnish or 20:80 rubber cement:mineral spirits

I'm going to low pass them at either 500 or 1000 Hz to go with the onkyo tweeters. Did you check out that other thread?
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