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Originally Posted by pramodkumar Navin i perfectly agree with you, but i have seen a lot of these woofers crack on its own.1 |
Woofer cones crack? Well if they are hit by some external force they will but I have not seen one crack under normal use. The surrounds however do have a shorter life. Quote:
Originally Posted by S.I.N.G.H i dont think i have used more than 8-10 gm as it was a single coat on the cone. | Quote:
Originally Posted by maglev I did not find any change in the sound quality | Quote:
Originally Posted by navin The Mass of a subwoofer come is about 100gms. Adding 10gms of paint wont affectit much. |
Just as I suspected. Quote:
Originally Posted by panky12345 Navin ji, I'm bit confused here. If I paint my GZ midbasses, how will that effect their performance. Would they sound better/worse? What exactly would be the change? (layman terms please ) |
panky your midbass has a Mms in the order of 10-20gms. adding 10gms of paint to the cone will make a significant change to the mass of the cone (it will change mms by 50-100%). this will seriosuly affect the "Force Factor" (which is BL/Mms) of your woofer. It will also lower the Fs of the woofer but the change in Force Factor is what would worry me. SINGH was adding 10gms to a 100gm cone which is only a 10% increase in Mms.
I did some experiments on mass of cones in my younger days. An uncle had a PVD (Sputtering machine) machine that could handle objects as large as 18"x 18" or so. Suptter PVD was one of the most consistent methods to deposit one material on another (limted control of layer thickness). The targets I used were aluminum (cheap and light) and the substrates were plastic tweeter domes (in those days tweeter domes were mostly plastic and flexed like hell). The object was to make the tweeter dome stiffer with a thin coat of aluminum. The added weight was in in the order of 1/4-1/2 gm. And this changed the characteristics so much that the tweeters were unuseable above 6k or 8k or there abouts. I suspect your midbass will suffer from a simialr degradation in performance.
Last edited by navin : 22nd March 2010 at 11:16.
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